powersoft MiniMod 4 User Manual

Keep this manual

for future reference

©2019 Powersoft

USER GUIDE

MiniMod 4

DO000243.00 Rev. 00

powersoft_MiniMod4_uguide_en

Data are subject to change without notice.
For latest update please refer to the
online version available on www.powersoft-audio.com.

Table of contents

1. Important safety instructions iii

2. Importantes instructions de sécurité iv

3. Instrucciones de seguridad importantes v

4. Importanti istruzioni di sicurezza vi

5. Regulatory information vii

6. Electrostatic Discharge (ESD) viii

7. MiniMod4 1

7 : 1.Welcome 1

7 : 2.Unpacking & checking for shipping damage 1

7 : 3.Disposal of the packing material 1

8. Thermal constraints 2

8 : 1.Heatsink performance 2

9. Electromagnetic Compatibility (EMC) & Safety 3

9 : 1.AC MAINS filter 3

9 : 2.Cabling 3

9 : 3.Ferrite cores 3

9 : 4.Chassis shielding 3

9 : 5.Mains Fuse 3

9 : 6.Earth connection 3

10. Mechanical drawings 4

11. Connections 5

11 : 1.Grounding 5

11 : 2.Bill of connectors 5

11 : 2.1. PL2 pinout (B3P-V H JST ) 6

11 : 2.3. PL1000, PL300 0 pinout 6

11 : 2.2. PL4 pinout (molex 22-27-2031) 6

11 : 2.4. PL1001, PL 20 01 pinou t 9

11 : 3.LED encoding 9

11 : 4.Internal Signal Path Polarity 10

11 : 5.Output Configuration 10

12. Protections 12

12 : 1.Fan control 12

12 : 1.1. Primary AC mains overcurrent protection 12

12 : 1.2. Primary AC mains overvoltage protection 12

12 : 1.3. Primary thermal prot ect ion 12

12 : 2.Amplifier protections 12

12 : 2.1. A mpli fier Ther mal prot ect ion 12

12 : 2.2. Outpu t shor t circuit 12

12 : 2.3. High frequenc y protec tion 13

13. Cable Kit - KT000349 14

13 : 1.Mains Cable – CB000727 14

13 : 2.Output cable, 4 x SE – CB000731 15

13 : 3.Output cable, 2 x BTL – CB000730 16

13 : 4.Output cable, 2 x PTL – CB000733 17

13 : 5.Output cable, 1 x PBTL – CB000732 18

14. Evaluation Board - KTP00477 19

14 : 1.Switch functions 19

14 : 2.Test points 20

14 : 3.LED Description 21

14 : 4. Thermal Limiter THR 22

14 : 5.Clip limiter + limiter bypass 23

14 : 6.Mute/Unmute 23

14 : 7.AUX Voltage selector 23

14 : 8.TempMon LED bar 23

14 : 9.Bypass entire EVB 23

14 : 10.Block diagram 24

14 : 11.Silkscreen 25

14 : 12.Schematic 26

14 : 13.Power + Energy Save 28

15. Support and warranty 29

15 : 1.Ser vice 29

15 : 2.Warranty 29

15 : 2.1. Return of Goods 29

15 : 2.2. Repair or replace ment 29

15 : 2.3. Cost and responsibility of transport 29

15 : 3.Assistance 29

16. Specifications 30

| i

ii | MiniMod 4 | User guide

Page intentionally left blank

Important safety instructions

This amplifier module is intended to be installed inside

other devices and must be checked in the final product.

EXPLANATIONS OF GRAPHICAL SYMBOLS

The triangle with the lightning bolt is used to alert the
user to the risk of electric shock.

The triangle with the exclamation point is used to
alert the user to important operating or maintenance
instructions.

The CE-mark indicates the compliance with the low
voltage and electromagnetic compatibility.

Symbol for earth/ground connection.

Symbol for conformity with Directive 2002/96/EC
and Directive 2003/108/EC of the European
Parliament on waste electrical and electronic equip­ment (WEEE).

Symbol for electrostatic discharge sensitive devices.

CAUTION

RISK OF ELECTRICK SHOCK

DO NOT OPEN

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this equipment near water.

6. Do not block any ventilation openings. Install in accordance with
Powersoft’s instructions.

7. Do not install near any heat sources such as radiators, heat regis­ters, stover or other apparatus that produce heat.

8. Do not defeat the safety purpose of the polarized or grounding­type plug.

9. Only use attachments/accessories specified by Powersoft.

10. Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way, such
as power-supply cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has
been dropped.

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT ATTEMPT
TO OPEN ANY PART OF THE UNIT. NO USER-SERVICEABLE

PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE,

DRIPPING OR SPLASHING LIQUIDS. OBJECTS FILLED WITH
LIQUIDS, SUCH AS VASES, SHOULD NOT BE PLACED ON THIS
APPARATUS.

SPEAKER TERMINALS COULD BE HAZARDOUS LIVE IF

SPEAKER BRIDGE MODE CONNECTION IS USED.

PROPER CONNECTIONS AND INSULATIONS TECHNIQUES

MUST BE ADOPTED WHEN SPEAKER BRIDGE MODE
CONNECTION IS USED.

1

Important safety instructions | iii

Importantes instructions de sécurité

2

Ce module d’amplification est destiné à être

installé à l’intérieur d’autres dispositifs et doit

donc être contrôlé sur le produit fini.

AVIS

RISQUES D’ÉLECTROCUTION

NE PAS OUVRIR

EXPLICATION DES SYMBOLES GRAPHIQUES

La triangle avec le symbol du foudre est employée
pour alerter l’utilisateur au risque de décharge élec­trique.

Le triangle avec un point d’exclamation est employée
pour alerter l’utilisateur d’instruction importantes
pour lors opérations de maintenance.

1. Lisez ces instructions.

2. Gardez ces instructions.

3. Tenez compte de toutes les mises en garde.

4. Suivez toutes les instructions.

5. N’utilisez pas cet amplificateur à proximité de l’eau.

6. Assurez-vous d’une bonne ventilation de l’appareil. Installez en
accord avec les instructions préconisées par Powersoft.

7. N’installez pas l’appareil à proximité de sources de chaleur ou
d’autres appareils produisant de la chaleur.

8. Respectez le dispositif de mise à la terre de la prise secteur.

9. Utilisez uniquement les accroches et accessoires spécifiés par
Powersoft.

10. Confiez toute réparation à un technicien qualifié. L’intervention
d’un technicien est nécessaire dans les cas suivants : le cordon
d’alimentation ou la prise secteur sont endommagés, des corps
étrangers ou du liquide se sont introduits dans l’appareil, l’appareil
a été exposé à la pluie ou à l’humidité, l’appareil montre des
signes de dysfonctionnement ou est tombé.

MISE EN GARDE : AFIN DE RÉDUIRE LES RISQUES DE CHOC

ÉLECTRIQUE, N’ESSAYEZ PAS D’OUVRIR L’UNITÉ, MEME EN
PARTIE. AUCUNE PIÈCE A L’INTERIEUR NE PEUT ETRE CHANGÉE PAR
L’UTILISATEUR. LAISSEZ L’ENTRETIEN A UN PERSONNEL QUALIFIÉ.

NE PAS EXPOSER CET APPAREIL A LA PLUIE OU A L’HUMIDITÉ,

AUX GOUTTES OU AUX ÉCLABOUSSURES. LES OBJETS
REMPLIS DE LIQUIDE, TELS QUE LES VASES, NE DOIVENT PAS ETRE
PLACÉS SUR CET APPAREIL.

LES BORNES D’ENCEINTES POURRAIENT ÊTRE DANGEREUX SI

LA CONNEXION DE MODE PONT DU HAUT-PARLEUR EST
UTILISÉ.

ADOPTER DES TECHNIQUES CORRECTES DE CONNEXION ET

D’ISOLEMENT LORSQUE LA CONNEXION EN MODE BRIDGE
HAUT-PARLEUR EST UTILISÉ.

Le marquage CE indique la conformité à la directive de
basse tension et la compatibilité électromagnétique.

Symbole pour la connexion à la terre.

Symbole pour la conformité al la Directive 2002/96/
EC et la Directive 2003/108/EC du Parlement
Européen sur les équipements électriques et élec­troniques (WEEE).

Symbole pour les appareils sensibles aux décharges
électrostatiques.

iv | MiniMod 4 | User guide

Instrucciones de seguridad importantes

Este módulo amplificador está diseñado para

ser instalado dentro de otros dispositivos y

debe verificarse en el producto final.

3

PRECAUCIÓN

RIESGO DE CHOQUE ELÉCTRICO

NO ABR A LA UNIDAD

EXPLICACIÓN DE LOS SÍMBOLOS GRÁFICOS

El triángulo con el símbolo de rayo eléctrico es usa­do para alertar al usuario de el riesgo de un choque
eléctrico.

El triángulo con el signo de admiración es usado
para alertar al usuario de instrucciones importantes
de operación o mantenimiento.

1. Lea estas instrucciones.

2. Guarde estas instrucciones.

3. Preste atención a todas las advertencias.

4. Siga todas las instrucciones.

5. No use este aparato cerca del agua.

6. No bloquee las aberturas de ventilación. Realice la instalación de
acuerdo con las indicaciones de Powersoft.

7. No instale cerca ninguna fuente de calor como, por ejemplo,
radiadores, rejillas de calefacción, hornos u otros aparatos que
produzcan calor.

8. No elimine el diseño de seguridad del enchufe, ya sea del tipo po­larizado o con conexión a tierra.

9. Use exclusivamente los dispositivos/accesorios indicados por
Powersoft.

10. El servicio técnico debe realizarlo siempre personal cualificado. Se
requerirá servicio de asistencia técnica cuando el aparato sufra
algún tipo de daño como, por ejemplo, que el cable de alimentación
o el enchufe estén dañados, que se haya derramado líquido o hayan
caído objetos dentro del aparato, que éste se haya expuesto a la llu­via o humedad, que no funcione normalmente o que se haya caído.

PRECAUCIÓN: PARA REDUCIR EL RIESGO DE DESCARGA

ELÉCTRICA, NO DESMONTE LA TAPA (NI EL PANEL TRASERO).
NO HAY PIEZAS REPARABLES POR EL USUARIO EN EL INTERIOR.
LLÉVELO A REPARAR A PERSONAL DE SERVICIO CUALIFICADO.

NO EXPONGA ESTE UNITAD A LA LLUVIA O LA HUMEDAD,

GOTEO O SALPICADURAS. NO COLOQUE OBJETOS LLENOS DE
LÍQUIDOS, TALES COMO VASIJAS, SOBRE EL APARATO.

TERMINALES DE LOS ALTAVOCES PODRÍA SER PELIGROSO, SI

SU CONEXIÓN SE UTILIZA EL ALTAVOZ MODO PUENTE.

ADOPTAR TÉCNICAS CORRECTAS DE CONEXIÓN Y

AISL AMIENTO CUANDO SE USA CONEXIÓN DE ALTAVOZ MODO
PUENTE.

La marca CE indica el cumplimiento de la directiva
de bajo voltaje y de compatibilidad electromagnética.

Símbolo de la conexión a tierra.

Símbolo de conformidad con la Directiva 2002/96/
EC y Directiva 2003/108/EC del Parlamento Europeo
sobre los aparatos eléctricos y electrónicos (WEEE).

Símbolo para los dispositivos sensibles a descargas
electrostáticas.

Instrucciones de seguridad importantes | v

Importanti istruzioni di sicurezza

4

1. Leggere queste istruzioni.

2. Conservare le istruzioni.

3. Tenere conto di tutti gli avvisi.

4. Seguire tutte le istruzioni.

5. Non usare l'apparecchio in prossimità di acqua.

6. Non ostruire le prese di ventilazione. Installare secondo le indica­zioni del produttore.

7. Non installare vicino a fonti di calore quali radiatori, bocchette
dell'aria calda, stufe o altri apparecchi (compresi gli amplificatori)
che producono calore.

8. Non compromettere la sicurezza delle spine polarizzate o con
messa a terra.

9. Usare solo accessori specificati dal produttore.

10. Ricorrere a personale qualificato per qualsiasi intervento. Tali
interventi sono necessari in caso di guasti dell'apparecchio
quali danneggiamento del cavo di alimentazione o della spina,
versamento di liquidi o caduta di oggetti nell'apparecchio, es­posizione a pioggia o umidità o se l'apparecchio non funziona
normalmente o è caduto.

ATTENZIONE

RISCHIO DI SCOSSE

ELETTRICHE, NON APRIRE

ATTENZIONE: PER RIDURRE IL RISCHIO DI SCOSSE

ELETTRICHE, NON TENTARE DI APRIRE ALCUNA PARTE
DELL’UNITÀ. NON CI SONO PARTI INTERNE AD USO DELL’UTENTE.
RIVOLGERSI A PERSONALE QUALIFICATO PER L’ASSISTENZA.

NON ESPORRE QUESTO APPARECCHIO ALLA PIOGGIA,

UMIDITÀ O SOSTANZE LIQUIDE. OGGETTI PIENI DI LIQUIDI,
COME VASI, NON DEVONO ESSERE COLLOCATI SU QUESTO APPARATO.

I TERMINALI DEI DIFFUSORI POTREBBERO ESSERE

PERICOLOSI, SE VIENE UTILIZZATA LA CONNESSIONE IN
MODALITÀ BRIDGE DEGLI ALTOPARLANTI.

ADOTTARE LE CORRETTE TECNICHE DI CONNESSIONE E

ISOLAMENTO QUANDO VIENE UTILIZZATA LA CONNESSIONE
IN MODALITÀ BRIDGE DEGLI ALTOPARLANTI.

SPIEGAZIONE DEI SIMBOLI GRAFICI

Il triangolo con il lampo è utilizzato per avvisare
l’utente del rischio di scossa elettrica.

Il triangolo con il punto esclamativo è utilizzato per
avvisare l’utente di importanti istruzioni d’uso e ma­nutenzione.

Il marchio CE indica la conformita’ del prodotto a
tutte le direttive europee applicabili

Simbolo della connessione di terra.

Simbolo di conformità alla Direttiva 2002/96/CE e
alla Direttiva 2003/108/CE del Parlamento Europeo
sulle apparecchiature elettriche ed elettroniche
(RAEE).

Simbolo per le apparecchiature sensibili alle scariche
elettrostatiche

Questo modulo amplificatore è destinato ad essere

installato dentro altri dispositivi e deve quindi

essere controllato nel prodotto finito.

vi | MiniMod 4 | User guide

FCC COMPLIANCE NOTICE

This device complies with part 15 of the FCC rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

CAUTION: Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.

NOTE: This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment gener­ates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equip­ment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the
following measures:

 Reorient or relocate the receiving antenna.
 Increase the separation between the equipment and receiver.
 Connect the equipment into an outlet on a circuit different from

that to which the receiver is connected.

 Consult the dealer or an experienced radio/TV technician for help.

WEEE DIRECTIVE

If the time arises to throw away your product, please recycle all the
possible components.

This symbol indicates that when the end-user wishes
to discard this product, it must be sent to separate col­lection facilities for recovery and recycling. By separat­ing this product from other household-type waste, the
volume of waste sent to incinerators or land-fills will be
reduced and natural resources will thus be conserved.

The Waste Electrical and Electronic Equipment Directive (WE EE Directive)
aims to minimise the impact of electrical and electronic goods on the en­vironment. Powersoft S.p.A. comply with the Directive 2002/96/EC and
2003/108/EC of the European Parliament on waste electrical finance the
cost of treatment and recovery of electronic equipment (WEEE) in order
to reduce the amount of WEEE that is being disposed of in land-fill site.
All of our products are marked with the WEEE symbol; this indicates that
this product must NOT be disposed of with other waste. Instead it is the
user’s responsibility to dispose of their waste electrical and electronic
equipment by handing it over to an approved reprocessor, or by return­ing it to Powesoft S.p.A. for reprocessing. For more information about
where you can send your waste equipment for recycling, please contact
Powesoft S.p.A. or one of your local distributors.

Regulatory information

5

EC DECLARATION OF CONFORMITY

Manufacturer:

Powersoft S.p.A.
via E. Conti 5
50018 Scandicci (Fi)
Italy

We declare that under our sole responsibility the products:
Model Name: MiniMod4
Intended use: Professional Audio Amplifier Module

Are in conformity with the provisions of the following EC Directives,
including all amendments, and with national legislation implementing
these directives:
2014/35/EU Low Voltage Directive
2014/30/EU Electromagnetic Compatibility Directive
2011/65/EU RoHs Directive
2014/53/EU Radio Equipment Directive

The following harmonized standards are applied:

EN 55103-1: 2009 /A1: 2012
EN 55103-2: 2009 /IS: 2012
EN 55032: 2012
EN 55035: 2017
EN 60065: 2014 /AC: 2016

Scandicci,
February 2019

Luca Lastrucci
Managing Director

For compliance questions only: [email protected]

Regulatory information | vii

Electrostatic Discharge (ESD)

6

Electrostatic discharge (ESD) is one of the most signi­cant factors leading to damage and failure of a wide variety
of electronic components.

Poor handling can cause internal damage, which is
invisible. This internal damage can then cause electrical
failure or reliability problems.

It is recommended that all workstations where

Electrostatic Discharge Sensitive devices (ESDS)
and assemblies are handled outside of full static protection
packaging (i.e. within static control areas) should be pro­vided with some form of ground conductive or dissipative
ooring.

viii | MiniMod 4 | User guide

MiniMod4 User Guide User GuideUser Guide

7

7 : 1.Welcome

Congratulations on your purchase of the Powersoft

MiniMod4 module.

We know you are eager to use the MiniMod4 module,
but please take a moment to read this user’s manual and
safety instructions. In case you have any questions, please
do not hesitate to contact your dealer or Powersoft.

The MiniMod4 is a four channel amplier modules spe­cically designed to drive high power loudspeakers.

The MiniMod4 represents an important evolution in pow­er amplier modules: extremely compact and lightweight
MiniMod4 can be easily integrated into any appliance such
as active loudspeakers and stand alone rack ampliers.

The new design of the power supply equipped
with PFC, reduces power consumption (less than

0.55 W in standby) while enhancing reliability and
consistency in all operating conditions. The high ef­ciency of the output stage improves overall perfor­mance delivering pristine power and clean output signal.
A dedicated optional DSP board can be easily plugged to
the module providing a complete solution in a compact
package.

Powersoft MiniMod4 is the ultimate exible platform
suiting your application design.

7 : 2.Unpacking & checking for shipping damage

Your Powersoft product has been completely tested and
inspected before leaving the factory. Carefully inspect the
shipping package before opening it, and then immediately
inspect your new product. If you nd any damage notify the
shipping company immediately.

7 : 3.Disposal of the packing material

The transport and protective packing has been selected
from materials which are environmentally friendly for dis­posal and can normally be recycled.

Rather than just throwing these materials away, please
ensure they are offered for recycling.

MiniMod4 | 1

8

Thermal constraints

This device must be correctly heatsinked for proper and
reliable operation: an appropriate external passive heat sink
guarantees by design thermal efciency and reliability.

Proper heatsink planarity is strongly suggested to al­low thermal transfer from the module’s bottom plate to the
heatsink; a thermal compound may be used, but it is not
strictly necessary.

In order to ensure proper ventilation of the module, rea­sonable spacing of at least 100 mm must be left between
the frame of the unit and any side component or surface of
the enclosure.

The module has been designed to t into a loudspeaker
cabinet: please refer to FIGURE 1 for proper module placing.

IN FIGURE 1 HEATSINK FINS ARE SET HORIZONTALLY

(WRONG!) ONLY FOR DESCRIPTIVE PURPOSE.

All conguration showed in FIGURE 1 are viable for
proper module placing and cooling. We suggest to posi­tion the module vertically with respect the ground in order
to take advantage of the chimney effect for ventilation and
heat dissipation.

In FIGURE 1.a the module and the loudspeakers share
the same room into the cabinet. This is the default place­ment solution: it allows good ventilation because of woofer
diaphragm movement and high air volume; be aware of
magnetic eld interaction: place the module far enough from
loudspeakers magnet in order to prevent fans blockage.

FIGURE 1.b shows the more efcient cooling congura-

tion, even if it is less effective against dust and moisture
that can get into the module. By allowing external air ow,
it is possible to reduce the ns width on the heatsink by
maintaining good cooling performances.

8 : 1.Heatsink performance

Here we suggest a rule of thumb to calculate the thermal
resistance of the heatsink.

The absolute thermal resistance of the heatsink is the
temperature difference (kelvin or celsius) across it structure
when a unit of heat energy ows through it in unit time (watt).
For seek of simplicity: a heatsink with low thermal resistance
offers high heat dissipation, as well as a low electric resist­ance allows high current owing through a conductive wire.

In order to dene the maximum allowed thermal resist­ance for the heatsink let assume the following:

 e as the amp module efciency
 cf as the crest factor of the audio signal

 W

max

as the peak power delivered by the module

 T

amb

as the highest ambient temperature

 T

mod

as the highest operating temperature

The thermal resistance of the heatsink derives from the fol-

lowing formula:
The maximum dissipated power can be calculated as:

set at 75°C (167°F) on the bottom plate and stating an ambi­ent temperature of 45 °C (113°F), the previous example gives:
meaning that the temperature of the bottom plate is always

lower than 75°C if the heatsink has a thermal resistance
better than 0.14°C/W (or 0.14 K /W) with ambient temperature
up to 45 °C.

For example, stating an efciency of 80%, 6 dB crest factor

and 3400 W peak power, the dissipated heat is:
Supposing that the thermal protection of the module (T

mod

) is

100 mm

3.94 inch

Be aware of

magnetic leakage

MIN.

Do not obstruct

air ow

Be aware of

air leakage

FIGURE 1: Cooling solutions

(for descriptive purpose

the heatsink fins are set in

wrong direction);

a) Module and loudspeaker

into the same chamber;
b) Module in a separate

vented chamber.

Dissipated power =

cf

W

max

(1 - e)

Rth =

Dissipated power

T

mod

- T

amb

= 0.14°C/W

170

75 - 45

= 170 W

4

3400 (1 - 0.8)

2 | MiniMod 4 | User guide

a

b

9

Electromagnetic Compatibility (EMC) & Safety

9 : 1.AC MAINS filter

In order to improve the electromagnetic compatibility
an EMC lter must be inserted before the AC MAINS

plugs on the power supply. Powersoft suggests:

YUNPEN YK03T1

9 : 2.Cabling

Wiring between the amp module and the load may lead
to radio frequency noise. The following guide lines should
be observed:

 reduced cabling length is advisable;
 keep cable pairs as close as possible to each other in

order to minimize the antenna effect;

 design the cabling path far from RF noise source;
 set the cabling for RF noise rejection: shielded or

twisted cables are advisable conguration (ref.

FIGURE 4);

 use electromagnetic compatibile connectors.
 place ferrites as close to the module as possible

9 : 3.Ferrite cores

Reject RF noise from input and output cabling by in­stalling ferrite shields. Powersoft suggests the FAIR RITE
0431164181, or equivalent.

9 : 5.Mains Fuse

MiniMod 4 is equipped with an internal Time Delay
fuse rated at 4A. Thhis fuse must be replaced only by an
authorized Powersoft service center.

9 : 6.Earth connection

This device must be powered exclusively by earth

connected mains sockets in electrical networks
compliant to the IEC 364 or similar rules. Is absolutely nec­essary to verify this fundamental requirement of safety and,
in case of doubt, require an accurate check by a qualied
personal.
Is absolutely necessary to ground this device using the
proper earth connection on the metal frame of the chas­sis; use M4 nut and bolt with proper split washer – grover
washer – to secure the earth terminal lug.

Wrap both cables around one side of each ferrite so that
it pass through each ferrite twice (ref. FIGURE 3). Install the
ferrite shield as close as possible to where the cable plugs
into the amplier. Placing the ferrite elsewhere on the cable
noticeably reduces its effectiveness.

9 : 4.Chassis shielding

If not already present on the product, a full body metal
chassis or a shielding cage will provide best shielding of RF
emission. In order to achieve the highest shielding, minimize
the amount and size of holes or opening in the chassis.

FIGURE 2: Typical electrical schematic of the EMI Filter.

FIGURE 3: Ferrite core installation on I/O wirings.

Loose pair

Configuration
prone to high
RF noise

Parallel pair

Configuration
prone to RF noise

Twisted pair

Highly immune
to RF noise

Shielded pair

Highly immune
to RF noise

FIGURE 4: Cabling configuration.

Input

signal

FIGURE 5: Tools and best practice for improving

the electromagnetic compatibility.

AC MAINS filter

Chassis shielding

Amp module

inside

Ferrite core

Ferrite core

Output signal

Electromagnetic Compatibility (EMC) & Safety | 3

4 | MiniMod 4 | User guide

10

Mechanical drawings

FIGURE 6: MiniMod4 side and back plate (all dimensions in millimeters).

(190)

(80)

O4,34x

(42)

(2)

71,5

181,54,25 4,25

4,25 4,25

Connections | 5

11

Connections

11 : 1.Grounding

The amplier module is intended to be assembled in an

End Product.

In the End Product, the metal plate of the amplier module
shall be mechanically xed and electrically connected to
conductive parts connected to protective earth – PE.

The main PE connector of the End Product shall be
connected to the chassis, or to the accessible conductive
enclosure parts, with suitable measures according the
standard and applicable national deviations.

Any EMI lter added into the mains cable must be
screwed to grounded metal parts of the chassis and its PE
cable must be connected to grounding point of end product.

11 : 2.Bill of connectors

CODE NAME TYPE

PL1000
PL3000

Input connector IDC socket 34 pin

PL10 01
PL2001

Output connector JST B6P-VH

PL2 AC Mains JST B3P-VH

PL4 FAN Molex 22-27-2031

Mating connectors, not provided
Loudspeaker wires housing: JST VHR-6N
Mains connector housing: JST VHR-3N
Terminals: SVH-41T_P1-1
Fan connector: Molex 22-01-2035
Terminals: KK 254 4809 series

PL3000 PL1000

PL2001 PL1001

PL2

PL4

6 | MiniMod 4 | User guide

11 : 2.2. PL4 pinout (molex 22-27-2031)

Pin# Symbol Description

1 GND Ground connection

2 HOT +12 V, 100 mA max current draw (fan)

3 GND Ground connection

The PL4 molex plug in intended for connecting a fan whose
activation is driven by the temperature.

11 : 2.3. PL1000, PL3000 pinout

11 : 2.1. PL2 pinout (B3P-VH JST)

PL1000 pinout (IDC 34p)

Pin# Name IN OUT POWER Range Scale Factor Impedance Tolerance Description

1 SDPWS P

Active High, Logic input 3,3 to

12Vdc

1kΩ Powers Supply Shut Down

2 RE ADY 13 P

high when output stage is

operative 3,9-4,1

100K TBD

3 RESERVED

4 +5VDC OUT P

+5Vdc out 20mA max current

available

+/-5%

5 AUXVSEL P

Open: select 15V for auxiliary

voltage. Short to ground: select

12V for auxiliary voltage

Internal pull-up 10kΩ @

12V

6 IN 1 + P

Unbalanced: 1,41Vrms for full
output shorting pin 7 to GND.

8Vrms absolute max input.

9,4kΩ

Channel 1 Positive

Balanced input. 26dB Input

to Output Overall Gain

Balanced: 0,705Vrms for full

output. 8Vrms absolute max input.

9,4kΩ

7 IN 1 - P

Unbalanced: 1,41Vrms for full

output. 8Vrms absolute max input.

4,7kΩ

Channel 1 Negative

Balanced input. 26dB Input

to Output Overall Gain

Balanced: 0,705Vrms for full

output. 8Vrms absolute max input.

3,1k Ω

8 GND P Ground

9 VOUT1MON P 20V/ V 4,5kΩ

Channel 1 Output Voltage

Monitor

10 PROTECT 12 P

Level 1 (4.5V to 5V) not in

protection. Level 0 (0V to 0.5V) in

Protection

4,7kΩ

Channel 1 & Channel 2

Output Stage Protection

Monitor

11 IOUT1MON P 8,35A/V 4,7kΩ

Channel 1 Output Current

Monitor

12 TEMPMON P 0-5V 100 kΩ NTC sensor tap output

13 +12/15VDC OUT P +12V @ 0,8A or +15V @ 0,6A + /-10%

Positive regulated analog

section supply (same as

pin 22)

14 -12/15VDC OUT P -12V @ 0,2A or -15V @ 0,2A +/-10%

Negative regulated analog

section supply (same as

pin 21)

15 MUTE13 P

Active Low, To be pulled to GND

by current sink at least 2mA

CH1-CH2-CH3-CH4

Output stage disable PWM
16 +VCCMON P 20V/V 2V max 4,5kΩ Rail Bus Positive Monitor
17 -VCCMON P 20V/V 2V max 4,5kΩ Rail Bus Negative Monitor
18 -VCCMON P 20V/V 2V max 4,5kΩ Rail Bus Negative Monitor
19 +VCCMON P 20V/V 2V max 4,5kΩ Rail Bus Positive Monitor

20 MUTE P

Active Low, To be pulled to GND

by current sink at least 2mA

CH1-CH2-CH3-CH4

Output stage disable PWM

21 -12/15VDC OUT P -12V @ 0,2A or -15V @ 0,2A +/-10%

Negative regulated analog

section supply (same as

pin 21)

22 +12/15VDC OUT P +12V @ 0,8A or +15V @ 0,6A +/-10%

Positive regulated analog

section supply (same as

pin 22)

23 TEMPMON P 0-5V TBD 1k Ω NTC sensor tap output

24 IOUT2MON P 8,35A/ V 4,7kΩ

Channel 2 Output Current

Monitor

Pin# Symbol Description

1 L AC Mains: phase input

2 n /c not connected

3 N AC Mains: neutral input

Connections | 7

Pin# Name IN OUT POWER Range Scale Factor Impedance Tolerance Description

25 PROTECT 12 P

Level 1 (4.5V to 5V) not in

protection. Level 0 (0V to 0.5V) in

Protection

4,7kΩ

Channel 1 & Channel 2

Output Stage Protection

Monitor

26 VOUT2MON P 20V/V 4,5kΩ

Channel 2 Output Voltage

Monitor

27 GND P Ground

28 IN 2 - P

Unbalanced: 1,41Vrms for full

output. 8Vrms absolute max input.

4,7kΩ

Channel 2 Negative

Balanced input. 26dB Input

to Output Overall Gain

Balanced: 0,705Vrms for full

output. 8Vrms absolute max input.

3,1k Ω

29 IN 2 + P

Unbalanced: 1,41Vrms for full
output shorting pin 7 to GND.

8Vrms absolute max input.

9,4kΩ

Channel 2 Positive

Balanced input. 26dB Input

to Output Overall Gain

Balanced: 0,705Vrms for full

output. 8Vrms absolute max input.

9,4kΩ

30 GND P Ground

31 +5VDC OUT P

+5Vdc out 20mA max current

available

+/-5%

32 RESERVED

33 RE ADY 12 P

Open Collector, high when output

stage is operative

TBD TBD

34 SDPWS P

Active High, Logic input 3,3 to

12Vdc

1kΩ Powers Supply Shut Down

8 | MiniMod 4 | User guide

PL3000 pinout (IDC 34p)

Pin# Name IN OUT POWER Range Scale Factor Impedance Tolerance Description

1 SDPWS P

Active High, Logic input 3,3 to

12Vdc

1kΩ Powers Supply Shut Down

2 READY 34 P

Open Collector, high when output

stage is operative

TBD TBD

3 RESERVED

4 +5VDC OUT P

+5Vdc out 20mA max current

available

+/-5%

5 AUXVSEL P

Open: select 15V for auxiliary

voltage. Short to ground: select

12V for auxiliary voltage

Internal pull-up 10kΩ @

12V

6 IN 3 + P

Unbalanced: 1,41Vrms for full
output shorting pin 7 to GND.

8Vrms absolute max input.

9,4kΩ

Channel 3 Positive

Balanced input. 26dB Input

to Output Overall Gain

Balanced: 0,705Vrms for full

output. 8Vrms absolute max input.

9,4kΩ

7 IN 3 - P

Unbalanced: 1,41Vrms for full

output. 8Vrms absolute max input.

4,7kΩ

Channel 3 Negative

Balanced input. 26dB Input

to Output Overall Gain

Balanced: 0,705Vrms for full

output. 8Vrms absolute max input.

3,1k Ω

8 GND P Ground

9 VOUT3MON P 20V/V 4,5kΩ

Channel 3 Output Voltage

Monitor

10 PROTECT 34 P

Level 1 (4.5V to 5V) not in

protection. Level 0 (0V to 0.5V) in

Protection

4,7kΩ

Channel 3 & Channel 4

Output Stage Protection

Monitor

11 IOUT3MON P 8,35A /V 4,7kΩ

Channel 3 Output Current

Monitor

12 TEMPMON P 0-5V TBD 1kΩ NTC sensor tap output

13 +12/15VDC OUT P +12V @ 0,8A or +15V @ 0,6A + /-10%

Positive regulated analog

section supply (same as

pin 22)

14 -12/15VDC OUT P -12V @ 0,2A or -15V @ 0,2A +/-10%

Negative regulated analog

section supply (same as

pin 21)

15 MUTE P

Active Low, To be pulled to GND

by current sink at least 2mA

CH1-CH2-CH3-CH4

Output stage disable PWM
16 +VCCMON P 20V/V 2V max 4,5kΩ Rail Bus Positive Monitor
17 -VCCMON P 20V/V 2V max 4,5kΩ Rail Bus Negative Monitor
18 -VCCMON P 20V/V 2V max 4,5kΩ Rail Bus Negative Monitor
19 +VCCMON P 20V/V 2V max 4,5kΩ Rail Bus Positive Monitor

20 MUTE P

Active Low, To be pulled to GND

by current sink at least 2mA

CH1-CH2-CH3-CH4

Output stage disable PWM

21 -12/15VDC OUT P -12V @ 0,2A or -15V @ 0,2A +/-10%

Negative regulated analog

section supply (same as

pin 21)

22 +12/15VDC OUT P +12V @ 0,8A or +15V @ 0,6A +/-10%

Positive regulated analog

section supply (same as

pin 22)

23 TEMPMON P 0-5V TBD 1k Ω NTC sensor tap output

24 IOUT4MON P 8,35A/ V 4,7kΩ

Channel 4 Output Current

Monitor

25 PROTECT 34 P

Level 1 (4.5V to 5V) not in

protection. Level 0 (0V to 0.5V) in

Protection

4,7kΩ

Channel 3 & Channel 4

Output Stage Protection

Monitor

26 VOUT4MON P 20V/ V 4,5kΩ

Channel 4 Output Voltage

Monitor

27 GND P Ground

28 IN 4 - P

Unbalanced: 1,41Vrms for full

output. 8Vrms absolute max input.

4,7kΩ

Channel 4 Negative

Balanced input. 26dB Input

to Output Overall Gain

Balanced: 0,705Vrms for full

output. 8Vrms absolute max input.

3,1k Ω

29 IN 4 + P

Unbalanced: 1,41Vrms for full
output shorting pin 7 to GND.

8Vrms absolute max input.

9,4kΩ

Channel 4 Positive

Balanced input. 26dB Input

to Output Overall Gain

Balanced: 0,705Vrms for full

output. 8Vrms absolute max input.

9,4kΩ

Connections | 9

11 : 3.LED encoding

A single LED is located on the point indicated in the picture.

Pin# Name IN OUT POWER Range Scale Factor Impedance Tolerance Description

30 GND P Ground

31 +5VDC OUT P

+5Vdc out 20mA max current

available

+/-5%

32 RESERVED

33 READY 34 P

Open Collector, high when output

stage is operative

TBD TBD

34 SDPWS P

Active High, Logic input 3,3 to

12Vdc

1kΩ Powers Supply Shut Down

11 : 2.4. PL1001, PL2001 pinout

1

6

PL1001 pinout (B6P-VH JST)

Pin# Symbol Polarity Description

1 GND - Channel 1 Negative
2 HOT + Channel 1 Positive
3 GND - Channel 3 Negative
4 HOT + Channel 3 Positive
5 GND Parallel Ground
6 Signal Parallel Signal

PL2001 pinout (B6P-VH JST )

Pin# Symbol Polarity Description

1 GND + Channel 2 Positive
2 HOT - Channel 2 Negative
3 GND + Channel 4 Positive
4 HOT - Channel 4 Negative
5 GND Parallel Ground
6 Signal Parallel Signal

Priority Status Description

Steady ON Everything Good

1

o

1 pulse (100ms ON 200ms OFF) PGOOD not good
5o2 pulses (100ms ON 200ms OFF) Output stage temperature too high
4o3 pulses (100ms ON 200ms OFF) transformer temperature too high
6o4 pulses (100ms ON 200ms OFF) high frequency protection
2o5 pulses (100ms ON 200ms OFF) transformer NTC broken
3o6 pulses (100ms ON 200ms OFF) output stage NTC broken

Loudspeaker wires

housing: JST VHR-6N

10 | MiniMod 4 | User guide

11 : 4.Internal Signal Path Polarity

In order to increase the power’s supply energy storage
efciency, signals coming from channel pairs 1-2 are polar­ity reversed, one with respect to the other within the pair,
when entering the amplier. This ensures a symmetrical use
of the voltage rails: if, for example, both channels 1 and 2
input signals are going through a peak at the same time,
channel 1’s energy will come from the positive voltage rails
while channel 2, whose polarity is reversed with respect to
channel 1, will be fed energy from the negative voltage rails.
In this manner, the power supply will work symmetrically,
with one channel driven by the positive rails and the other
by the symmetrical negative rails. Channel 2’s signal will be
polarity reversed once more to ensure that both channels
output with the same polarity as their corresponding input
signals.

For this reason it is very important not to invert the po­larity of either channels before feeding them to the module.
A double polarity inversion (the rst by the user inserting
the input signal and the other by the amplier’s internal
circuitry) results in no inversion at all. If this were the case,
both channels would be weighting on only one side (positive
or negative) of the power supply’s voltage rails. This would
result in an inefcient use of the power supply’s energy.

Please pay special attention in using balanced inputs on
all measurement equipment (such as oscilloscope probes)
when you are bench testing.

11 : 5.Output Configuration

MiniMod 4 can be congured in 5 different output type

of connections:

4 x SE (Single Ended): 4 indipendent channels.
2 x BTL (Bridge Tied Load): Two couples of channels

bridged.

2 x SE + 1 x BTL: A couple of channel bridged while the

remaing two channels kept single ended.

2 x PTL (Parallel Tied Load); Two couple of channels
obtained by paralleling two channels of the module. This
conguration can be activated by short circuiting two pins

of output connector indicated on FIGURE X, it must be
done before switching on the module.

Activating the parallel mode on one of the output
connectors, implies setting up parallel mode on both
channel pairs. For safety reasons we suggest to apply the
parallel mode on both connectors.

1 x PBTL (Parallel Bridge Tied Load): A single channel
can be obtaned by bridging the PTL conguration.

GND

Parallel

-

+

-

+

GND

Parallel

+

-

+

-

CH1

CH3

CH2

CH4

Parallel

Parallel

GND

Parallel

-

+

-

+

GND

Parallel

+

-

+

-

CH1

CH3

CH2

CH4

Parallel

Parallel

GND

Parallel

-

+

-

+

GND

Parallel

+

-

+

-

CH1

CH3

CH2

CH4

Parallel

Parallel

 4 x 150 W @ 4 Ω SE

 2 x 300 W @ 8 Ω BTL

 2 x 150 W @ 4 Ω SE + 1 x 300 W @ 8 Ω PBTL

OUT 1

OUT 2

OUT 3

OUT 3

OU T 1+2

OUT 3+4

OUT 1

OUT 2

OUT 3+4

FIGURE 7: Internal signal path polar-

ity with example input signals. Both channels

1 and 2 are fed with the same sine signal.

rst polarity

inversion

second polarity

inversion

Channel 1

input

Channel 2

input

Channel 1

output

Amp

Channel 2

output

1/2

3/4

rst polarity

inversion

second polarity

inversion

Channel 1

input

Channel 2

input

Channel 1

output

Amp

Channel 2

output

1/2

3/4

1

2

3

4

Connections | 11

GND

Parallel

-

+

-

+

GND

Parallel

+

-

+

-

CH1

CH3

CH2

CH4

Parallel

Parallel

GND

Parallel

-

+

-

+

GND

Parallel

+

-

+

-

CH1

CH3

CH2

CH4

Parallel

Parallel

GND

Parallel

-

+

-

+

GND

Parallel

+

-

+

-

CH1

CH3

CH2

CH4

Parallel

Parallel

GND

Parallel

-

+

-

+

GND

Parallel

+

-

+

-

CH1

CH3

CH2

CH4

Parallel

Parallel

GND

Parallel

-

+

-

+

GND

Parallel

+

-

+

-

CH1

CH3

CH2

CH4

Parallel

Parallel

 2 x 300 W @ 2 Ω PTL

 1 x 600 W @ 4 Ω PBTL

FIGURE 8: Short-circuited pins on the output connector.

OUT 1

OUT 2

OUT 1

Protections

Fault protections are systems designed to protect peo­ple from severe or fatal electric shocks and avoid severe
damages on the amplier or the loudspeakers in case of
electrical parameters out of scaling or critical changes in
environmental conditions.

The architecture of Powersoft’s ampliers encompass
several protection mechanisms triggered by harmful sig­nal and temperature. Protection systems and triggers are
independently implemented in the power supply section
(power supply protection) and the amplier section (ampli­er protections) in order to minimize system damages and
maximize efciency.

12 : 1.Fan control

By activating the parallel mode on one of the output
connectors, implies parallel mode set on both couple of
channels. For safety reasons we suggest to apply the paral­lel mode on both connectors.

The fan is not provided with the package, Powersoft
recommends:

40x40= SUNON series MB60151Vx, or ser ies MF60151Vx

12

T (°C) V

25 2.71

30 2.47

35 2.24

40 2.02

45 1.82

50 1.63

55 1.46

60 1.3

65* 1.16

70 1.04

75 0.93

80 0.83

85 0.75

*fan activation thresho ld

TABLE 1: Temperature to voltage relationship

on TEMPMON pins in PL1001

12 : 1.1. Primary AC mains overcurrent protection

A 4A time-delay fuse prevents against dangerous mains
overcurrent in case of an internal failure. The fuse is sol­dered on the PCB, it can be replaced only by authorized
Powersoft Service Center.

12 : 1. 2. Primary AC mains overvoltage protection

AC mains overvoltage threshold is set to 280 V

rms

. If the

AC mains voltage exceeds 280 V

rms

the primary power sup­ply stops working. The power supply turns on again when
the AC mains voltage drops under 275 V

rms

.

12 : 1. 3. Primary thermal protection

The temperature is detected by the NTC inside the power
transformer. The limiting factor is set as follows: fan starts to
run as soon as the transformer reaches 80°, amplier starts to
reduce the output stage voltage as soon as the transformer
reaches 100°. When the temperature exceeds 120°, output
stage goes in safety thermal switch off.

Protection status is reported as follow:

In case of a broken NTC, or when the temperature is
<-30o, the protection status will be reported as follows:

12 : 1.4 . Auxiliary Undervoltage Protection

In case the Aux voltage drops below 10.5 V, the protec­tion status will be reported as follows:

12 : 2.Amplifier protections

12 : 2.1. Amplifier Thermal protection

The temperature is detected by the NTC in the middle of
the PCB, close to the xing screw. The limiting factor is set as
follows: amplier starts to reduce the output stage voltage as
soon as the NTC reaches 85°, when the temperature exceeds
100°, output stage goes in safety thermal switch off.

Protection status is reported as follow:

Do not position the fan as indicated above as this may result in wrong

temperature readings.

Priority Status Description

Steady ON Everything Good

1o1 pulse (100ms ON 200ms OFF) PGOOD not good

5o2 pulses (100 ms ON 200ms OFF ) Output stage temperature too high

4o3 pulses (100 ms ON 200ms OFF ) transformer temperature too high

6o4 pulses (100 ms ON 200ms OFF ) high frequency protection

2o5 pulses (100 ms ON 200ms OFF ) trans former NTC broken

3o6 pulses (100 ms ON 200ms OFF ) ou tput stage NTC broken

Priority Status Description

Steady ON Everything Good

1o1 pulse (100ms ON 200ms OFF) PGOOD not good

5o2 pulses (100 ms ON 200ms OFF ) Output stage temperature too high

4o3 pulses (100 ms ON 200ms OFF ) transformer temperature too high

6o4 pulses (100 ms ON 200ms OFF ) high frequency protection

2o5 pulses (100 ms ON 200ms OFF ) trans former NTC broken

3o6 pulses (100 ms ON 200ms OFF ) ou tput stage NTC broken

1

o

1 pulse (100ms ON 200ms OFF) PGOOD not good

2o5 pulses (100 ms ON 200ms OFF ) trans former NTC broken

Protections | 12

Protections | 13

12 : 2.2. Output short circuit

If the load impedance is too low or the loudspeaker line
has a short circuit (because of voice coil damages, wires
short circuit, improper wiring, etc), the amplier output
current

rises to harmful values. When the output current reaches
12Apeak the amplier section switches off instantly, the
power supply still working. When the short circuit is activat­ing the protect pin goes to Level 0 (0 – 0,5mV

rms

)

12 : 2.3. High frequency protection

High frequency stationary signals, such as sine waves
with high amplitude, tend to stress the amplier section
of the module as well as the loudspeakers voice coils. if
the input signal is above 20 kHz greater than 450mV

rms

, the
protection will activate starting the fan. Increasing the input
signal, the amp module will reduce the output stage voltage
until switching off the output stage.

Protection status is reported as follow:

In case of a broken NTC, or when the temperature is

<-30o, the protection status will be reported as follows:

Priority Status Description

Steady ON Everything Good

1o1 pulse (100ms ON 200ms OFF) PGOOD not good

5o2 pulses (100 ms ON 200ms OFF ) Output stage temperature too high

4o3 pulses (100 ms ON 200ms OFF ) transformer temperature too high

6o4 pulses (100 ms ON 200ms OFF ) high frequency protection

2o5 pulses (100 ms ON 200ms OFF ) trans former NTC broken

3o6 pulses (100 ms ON 200ms OFF ) ou tput stage NTC broken

3o6 pulses (100 ms ON 200ms OFF ) ou tput stage NTC broken

Bill of Materials

Q Part Description MPN / Specs

1 PowerCon NAC3MPA-1

1 JST connector VHR-3N

2 JST Contacts SVH-21T-P1.1 (22 ~ 18 AWG), SVH-41T-P1-1 (20 ~ 16 AWG)

1 Fuse Holder SCI R3-32B2

1 Fuse LITTLE FUSE 326 15AT

1 Red cable 14 AWG

1 Blu cable 14 AWG

1 Yell/Green cable 14 AW G

JST Housing pin-out

PIN 1 AC Mains L (red wire)

PIN 2 Not connected

PIN 3

AC Mains N (blue

wire)

AMP
GND

Ground (yellow-

green wire)

Powercon pin-out

PIN L AC Mains L (red wire)

PIN N AC Mains N (blue wire)

PIN GND Ground

Cable Kit - KT000349

For module evaluation only.

13 : 1.Mains Cable – CB000727

13

Cable Kit - KT000349 | 14

Cable Kit - KT000349 | 15

Bill of Materials

Q Part Description MPN / Specs

1 Speakon NL4MP-UC

1 JST Connector VHR-6N

4 JST Contacts SVH-21T-P1.1 (22 ~ 18 AWG), SVH-41T-P1-1 (20 ~ 16 AWG)

1 White Cable 16 AWG

1 Blue Cable 16 AWG

1 Orange Cable 16 AWG

1 Grey Cable 16 AWG

Pin Out CH 1-3

JST Pin Cable Speakon Pin Speaker Pin

1 ORANGE 1- +

2 WHITE 1+ -

3 GREY 2- +

4 BLUE 2+ -

5 N.U. N.U. N.U.

6 N.U. N.U. N.U.

Pin Out CH 2-4

JST Pin Cable Speakon Pin Speaker Pin

1 ORANGE 1- +

2 WHITE 1+ -

3 GREY 2- +

4 BLUE 2+ -

5 N.U. N.U. N.U.

6 N.U. N.U. N.U.

13 : 2.Output cable, 4 x SE conguration – CB000731

CH 2 - 4

PIN 1

+

-

+

-

1-

1+

2-

2+

-

+

-

+

1-

1+

2-

2+

CH 1 - 3

16 | MiniMod 4 | User guide

Bill of Materials

Q Part Description MPN / Specs

1 Speakon NL4MP-UC

2 JST Connector VHR-6N

4 JST Contacts SVH-21T-P1.1 (22 ~ 18 AWG), SVH-41T-P1-1 (20 ~ 16 AWG)

1 White Cable 16 AWG

1 Blue Cable 16 AWG

1 Orange Cable 16 AWG

1 Grey Cable 16 AWG

Pin Out CH 1-3

JST Pin Cable Speakon Pin Speaker Pin

1 N.U. N.U. N.U.

2 ORANGE 1- +

3 N.U. N.U. N.U.

4 BLUE 2- +

5 N.U. N.U. N.U.

6 N.U. N.U. N.U.

Pin Out CH 2-4

JST Pin Cable Speakon Pin Speaker Pin

1 N.U. N.U. N.U.

2 WHITE 1+ -

3 N.U. N.U. N.U.

4 GREY 2+ -

5 N.U. N.U. N.U.

6 N.U. N.U. N.U.

13 : 3.Output cable, 2 x BTL conguration – CB000730

CH 1 - 3

CH 2 - 4

PIN 1

1-

2­1+
2+

+
+

-

-

Cable Kit - KT000349 | 17

Bill of Materials

Q Part Description MPN / Specs

1 Speakon NL4MP-UC

2 JST Connector VHR-6N

8 JST Contacts SVH-21T-P1.1 (22 ~ 18 AWG), SVH-41T-P1-1 (20 ~ 16 AWG)

2 White Cable 16 AWG

2 Blue Cable 16 AWG

2 Orange Cable 16 AWG

2 Grey Cable 16 AWG

2 Loop Cable 16 AWG

Pin Out CH 1-3

JST Pin Cable Speakon Pin Speaker Pin

1 ORANGE 1- -

2 WHITE 1+ +

3 GREY 1- -

4 BLUE 1+ +

5 LOOP N.U. N.U.

6 LOOP N.U. N.U.

Pin Out CH 2-4

JST Pin Cable Speakon Pin Speaker Pin

1 ORANGE 2- +

2 WHITE 2+ -

3 GREY 2- +

4 BLUE 2+ -

5 LOOP N.U. N.U.

6 LOOP N.U. N.U.

13 : 4.Output cable, 2 x PTL conguration – CB000733

CH 1 - 3

CH 2 - 4

PIN 1

­+
+

-

1-

1+

2-

2+

18 | MiniMod 4 | User guide

Bill of Materials

Q Part Description MPN / Specs

1 Speakon NL4MP-UC

2 JST Connector VHR-6N

4 JST Contacts SVH-21T-P1.1 (22 ~ 18 AWG), SVH-41T-P1-1 (20 ~ 16 AWG)

2 White Cable 16 AWG

2 Blue Cable 16 AWG

2 Loop Cable 16 AWG

Pin Out CH 1-3

JST Pin Cable Speakon Pin Speaker Pin

1 N.U. N.U. N.U.

2 WHITE 1+ +

3 N.U. N.U. N.U.

4 BLUE 1+ +

5 LOOP N.U. N.U.

6 LOOP N.U. N.U.

Pin Out CH 2-4

JST Pin Cable Speakon Pin Speaker Pin

1 N.U. N.U. N.U.

2 WHITE 1- -

3 N.U. N.U. N.U.

4 BLUE 1- -

5 LOOP N.U. N.U.

6 LOOP N.U. N.U.

13 : 5.Output cable, 1 x PBTL conguration – CB000732

CH 1 - 3

CH 2 - 4

PIN 1

+

-

1+

1-

Evaluation Board - KTP00477

14

Evaluation Board - KTP00477 | 19

B

A

F J

HC

E E

B

A

BB

I

I

G G

DDDI ID

Description Status

A

CH1-CH2 Bridge Mode OFF

A

CH3-CH4 Bridge Mode OFF

B

CH1 Polarity Reverse ON

B

CH2 Polarity Reverse ON

B

CH3 Polarity Reverse ON

B

CH4 Polarity Reverse ON

C

Bypass 1/2/3/4 ON

D

CH1 Mute OFF

D

CH2 Mute OFF

D

CH3 Mute OFF

D

CH4 Mute OFF

E

Voltage Limiter Disable CH 1-2 ON

E

Voltage Limiter Disable CH 3-4 ON

F

Energy Save ON

G

ESMODE CH1-2 OFF

G

ESMODE CH2-3 OFF

H

Thermal Limiter Threshold Setup ON

I

CH1 Bypass OFF

I

CH2 Bypass OFF

I

CH3 Bypass OFF

I

CH4 Bypass OFF

J

Auxilliary Voltage Selector OFF

14 : 1.Switch functions

Switch Status ON Status OFF

A

Bridge Mode

Ch1 routed to both Ch1, Ch2
Ch3 routed to both Ch3, Ch4

Each input connector is routed on its related

channel

B

Polarty Reverse

Reverse polarity for each input XLR (see block

diagram for better comprehension of Polarity Reverse

insertion point)

Standard polarity

C

Bypass 1/2/3/4

Output sourced directly from input XLRs. When

ON, all EVB limiting circuitry is bypassed (use in

conjunction with Bypass – 0 dip switch)

Input signal pass through internal limiters.

D

Mute

Mute related channel (disable output stage PWM

generator)

Related channel unmuted

E

Limiters Disable

thermal and voltage limiters disabled.

Signal pass through internal preamplier stage

anyway.

Thermal and voltage limiters engaged.

F

Energy Save

Energy save Active: after 10sec that input signal is not

detected, it goes into “shut down / auto mute” state

depending on the status of ESMODE switch; it wakes

up if signal is detected (wake up threshold -59dBV ).

Energy save disabled.

G

ESMODE

When Energy Save Mode is enabled this status shuts

down the Power Supply of the module (connected to

the related output connector)

When Energy Save Mode is enabled this

status mutes all channels of related connector

(disable output stage PWM generator power

supply is not shut down).

The EVB is an analog audio interface that includes
a thermal limiter, a clip limiter, and other functions (mute,
energy save enable) in order to evaluate the module with­out using a DSP. By setting correctly its limiters it will be
possible to run a long term test without audio interruption,
that would be otherwise triggered due to module internal
protection of over temperature or over power.

20 | MiniMod 4 | User guide

14 : 2.Test points

Test Point Description Scale/Full Scale (For Minimod4)

GND Ground

PWMLIM1 (2,3,4) Thermal Limiter Status (active high)

CLIPVL1 (2,3,4) Voltage Limiter Threshold dependent from rail voltage

TEMPMON12 (34) Signal monitoring the thermal status of amplier stages. See table below

IOUT1MON (2,3,4) Output Current monitor (scale dependent from connected module) 8A/V
VOUT1MON (2,3,4) Output Voltage monitor (scale dependent from connected module) 20V/ V
IN1EUNBAL (2,3,4) Unbalanced Input Signal (in phase and compared to IN-) 1V/ V

IN1-EXT (2,3,4) Balanced Negative Input Signal (at IDC output connector) 1V/ V (±1%)
IN1+EXT (2,3,4) Balanced Positive Input Signal (at IDC output connector) 1V/ V (±1%)

PROTECT1 (2,3,4) Protection Circuit Detection (active low) 4.6V

Mute CH1 (2,3,4) Channel Mute (active low) 8V

RDY1 (2,3,4) Channel Ready to play (signal dependent from connected module) 2V

VMON12N Negative rail Monitor Channels 1,2 20V/V
VMON12P Positive rail Monitor Channels 1,2 20V/ V

VMON34N Negative rail Monitor Channels 3,4 20V/ V

VMON34P Positive rail Monitor Channels 3,4 20V/V
SDPWS12 Shut Down Power Supply Signal (active high) engaged by Energy safe mode. 4.5V
SDPWS34 Shut Down Power Supply Signal (active high) engaged by Energy safe mode. 4.5V

-12S W Auxiliary Negative Supply Voltage (switched when engaging energy safe mode) 1V/ V

-12V C Auxiliary Negative Supply Voltage (as supplied by module) 1V/V

+12SW

Switched Auxiliary Positive Supply Voltage (switched when engaging energy safe

mode)

1V/V

+12VC Auxiliary Positive Supply Voltage (as supplied by module) 1V/ V

+5VC Auxiliary Positive +5V Supply Voltage (as supplied by module) 1V/V

Switch Status ON Status OFF

H

Thermal Limiter Threshold Setup

Set threshold according to the attached table

amplier dependant too.

I

Bypass 1-4 Signal goes to inner limiter circuitry.

Signal disconnected from internal limiters.

In order to completely bypass inner circuitry,

Input bypass should be OFF and Limiter

Bypass ON

J

Auxilliay Voltage Selector Sets module having auxiliary voltage of +/-15V.

Module has a default auxiliary voltage of +/-

12Vdc

Evaluation Board - KTP00477 | 21

14 : 3.LED Description

LED Color ON OFF

A

SIGNAL PRES GREEN Signal presence on input connectors Absence of signal at input connectors

B

12SW -12VC GREEN Presence of -12V auxiliary voltage

Absence of -12V auxiliar y voltage. Switched off in

case Energy Save status engaged

C

+12SW +12 VC GREEN Presence of +12V auxiliary voltage

Absence of +12V auxiliary voltage. Switched off in

case Energy Save status engaged

D

+5VC GREEN Presence of +5VC auxiliary voltage absence of +5VC auxiliary voltage

E

Energy Save GREEN When Energy save engaged When energy save OFF

F

SDPWS12 GREEN

When SDPWS enabled by Energy save

status

When SDPWS disabled

G

SDPWS34 GREEN

When SDPWS enabled by Energy save

status

When SDPWS disabled

H

RDY1,2,3,4 GREEN When related channel in Ready Status When related channel not in Ready Status

I

PROTECT1,2,3,4 RED When related channel in Protect Status When related channel not in Protect Status

J

LIMIT1,2,3,4 AMBER When limiter of related channel is engaged When limiter of related channel is not engaged

K

TEMPMON12, 34 - 25°C GREEN

When TEMPMON of related channel pair is

< 2.56V

When TEMPMON of related channel pair is > 2.56V

L

TEMPMON12, 34 - 50°C AMBER

When TEMPMON of related channel pair is

< 1.65V

When TEMPMON of related channel pair is > 1.65V

M

TEMPMON12, 34 - 75°C AMBER

When TEMPMON of related cchannel pair

is < 0.93V

When TEMPMON of related channel pair is > 0.93V

N

TEMPMON12, 34 - 85°C RED

When TEMPMON of related channel pair is

< 0.826V

When TEMPMON of related channel pair is >

0.826V

G

F

K

L

N

M

J J J J

I I I I

H H H H

E

D

B
C

A

22 | MiniMod 4 | User guide

14 : 4. Thermal Limiter THR

Thermal limiter monitors TEMPMON12-34 signals coming from the modules connected to each output connector of evaluation
board. Once TEMPMON signal matches the threshold set, the limiter starts reducing input signal of related couple of channels.

Threshold of thermal limiter must be setup adjusting the switches of “TEMP LIMIT VOLTAGE SELECTOR” as described in the
table below. Threshold will be the same for all channels.

TEMP LIMIT VOLTAGE SELECTOR

1 2 3 4 5 6 7 8 Threshold ID

OFF ON OFF OFF OFF OFF OFF OFF g

OFF ON ON OFF OFF OFF OFF OFF f

OFF ON ON ON OFF OFF OFF OFF e

OFF ON ON ON ON OFF OFF OFF d

OFF ON ON ON ON ON OFF OFF c

OFF ON ON ON ON ON ON OFF b

OFF ON ON ON ON ON ON ON a

1 53 72 64 8

ON
OFF

For Minimod4, heatsinked on a standard aluminum plate, the setup that guarantee operation continuity without any thermal shut
down intervention, are thresholds #c. Lower thresholds are allowed to be set, but additional precautions must be taken if it is
wanted to avoiding module going into a thermal shut down.

Plate Temperature (˚C) TEMPMON12-34 Threshold ID

25 2.62
30 2.42
35 2.22 a
40 2.02
45 1. 83
50 1. 65 b
55 1. 49
60 1.33

65 1.2

70 1.07
75 0.96 c
80 0.86 d
85 0.77
90 0.69
95 0.62

Tempmon vs. Temperature for Minimod4 (measured with a not-heatsinked amplifier)

Temperature is Measured on the metal plate underneath indicated point.

Evaluation Board - KTP00477 | 23

14 : 5.Clip limiter + limiter bypass

A clip limiter limits a max THD of output signal of about 3%. This limiter cannot be adjusted by the user. Threshold has been
intentionally set to a high THD value in order to get a maximum output power while having an acceptable distortion. Clip limiter
threshold drops when thermal limiter is engaged.

Thermal and voltage limiters can be enabled (ON status) or disabled by these switches. When the switches are enabled limiters
are not working but differently by the bypass function, signal pass through internal preamplier stage anyway. The purpose of
this feature is a quick A/B comparison of amplier with or without clip limiter active.

MUTE CH1 MUTE CH2 MUTE CH3 MUTE CH4 CH1 CH2 CH3 CH4

ON MUTED MUTED

ON MUTED MUTED

ON MUTED MUTED

ON MUTED MUTED

Couples of channels CH1-CH3 and CH2-CH4 can be muted or unmuted by acting on the switch “MUTE” of related channels.
When muting a channel, PWM generator stage is disabled.

14 : 6.Mute/Unmute

14 : 7.AUX Voltage selector

By default most of Powersoft modules provide an auxiliary supply voltage of +/-12V. By activating (ON status) this switch,
Minimod4 provide an auxiliary volt of +/-15V available on MiniMod4 only.

A LEDs light bar indicates 4 different thresholds as listed in the table below. Temperatures indicated on the scale must be
considered only as an indication and are strongly dependent from the module used along with evaluation board.

14 : 8.TempMon LED bar

LED

Turn on/off

Threshold (V)

25˚ 2.5
50˚ 1.6 5
75˚ 0.93
85˚ 0.826

When bypassing a channel of evaluation board, the signal goes directly from XLR input connectors to DIL 34 poles output
connectors. In this way, evaluation board can be transformed in a passive XLR input board, routing audio signals straight from
the input XLRs to the amplier inputs (polarity reverse and bridge switches are disabled too).

The following position of switches “Bypass_0” “Bypass_01” “Bypass_2” “Bypass_3” “Bypass_4” should be set:

14 : 9.Bypass entire EVB

Channel to

be bypassed

BYPASS_0 BYPASS_1-4

1 2 3 4 5 6 7 8 1 2 3 4
CH1 OFF OFF - - - - - - ON - - ­CH2 - - OFF OFF - - - - - ON - ­CH3 - - - - OFF OFF - - - - ON ­CH4 - - - - - - OFF OFF - - - ON

Channel to

be activated

BYPASS_0 BYPASS_1-4

1 2 3 4 5 6 7 8 1 2 3 4
CH1 ON ON - - - - - - OFF - - ­CH2 - - ON ON - - - - - OFF - ­CH3 - - - - ON ON - - - - OFF ­CH4 - - - - - - ON ON - - - OFF

In order to activate the internal limiters of demo board, the above described switches must be set in the opposite position as follow.

When EVB bypass is active, the following features are still available: TEMP LED BAR, MUTE, energy save (+ energy save mode
selection).

24 | MiniMod 4 | User guide

RAIL MONITOR

+

CLIPLEV GEN

TEMP MONITOR

AMP SMPS

AUX INPUT

AMP AUX

OUTPUT SWITCH

12V - 15V

MUTE

SWITCHES

SDPWS /

AUTO MUTE

ESMODE

SWITCHES

TEMP LEDS

+5VD REG

TEMP LIMITER

VOLTAGE

SELECTOR

DIP SWITCH

EMI FILTER

WAKE UP/

SDPWS

CIRCUIT

REV CH1

SWITCH

CH 1-2

LIMITERS

STAGE

CH 3-4

LIMITERS

STAGE

SIGNAL

PRESENCE

CIRCUIT

-12VA

+12VB

+12VA

-12VB

+5 VA

+5VB

+5VC

+12V

-12V

+12SW

-12SW

NC

NC

AUXVSEL

MUTE1

MUTE2

MUTE3

MUTE4

+12VC

-12VC

+12SW

+5VC

SD

SPWS 12 & 34

AUTOMUTE 12 & 34

ENABLE

CLIPLVL12

CLIPLVL34

PWMLIM12

PWMLIM34

VMON12N

VMON34N

DISABLE

LIMITERS

SWITCHES

TEMPMON12

TEMPMON34

CH1 BAL IN STAGE

CH2 BAL IN STAGE

CH3 BAL IN STAGE

CH4 BAL IN STAGE

CH1 BAL OUT STAGE

CH2 BAL OUT STAGE

CH3 BAL OUT STAGE

CH4 BAL OUT STAGE

CLIPLVL12

PWMLIM12

CLIPLVL34

PWMLIM34

ENERGY

SAVE

CIRCUIT

+

MANUAL SWITCH

CH3-4

PARALLEL

SWITCH

REV CH2

SWITCH

REV CH3

SWITCH

REV CH4

SWITCH

IN1SW_N

IN1SW_P

IN1S_N

IN1S_N

IN1S_P

IN1S_P

IN2SW_N

IN2SW_P

IN2BS_N

IN2BS_N

IN2BS_P

IN2BS_P

IN3SW_N

IN3SW_P

IN3S_N

IN3S_N

IN3S_P

IN3S_P

IN4SW_N

IN4SW_P

IN4BS_N

IN4BS_N

IN4BS_P

IN4BS_P

BYPASS_0

IN1SW_N

IN1SW_P

IN2SW_N

IN2SW_P

IN3SW_N

IN3SW_P

IN4SW_N

IN4SW_P

IN1_N

IN1_P

IN2_N

IN2_P

IN3_N

IN3_P

IN4_N

IN4_P

BYPASS_1

CH1-2

PARALLEL

SWITCH

IN2S_N

IN2S_P

IN4S_N

IN4S_P

IN1S_N

IN1S_P

IN2BS_N

IN2BS_P

IN3S_N

IN3S_P

IN4BS_N

IN4BS_P

IN1_N

IN1_P

IN1EXTB_N

IN1EXTB_N

IN1EXT_N

IN1EXT_P

BYPASS_2

IN2_N

IN2_P

IN2EXTB_N

IN2EXTB_N

IN2EXT_N

IN2EXT_P

BYPASS_3

IN3_N

IN3_P

IN3EXTB_N

IN3EXTB_N

IN3EXT_N

IN3EXT_P

BYPASS_4

IN4_N

IN4_P

IN4EXTB_N

IN4EXTB_N

IN4EXT_N

IN4EXT_P

IN1EXT_N

IN1EXT_P

IN2EXT_N

IN2EXT_P

IN3EXT_N

IN3EXT_P

IN4EXT_N

IN4EXT_P

SD

BLANCKING

CIRCUIT

Vref

+12SW

+12SW -12SW

+12SW -12SW

+12SW -12SW

+12SW -12SW

+12SW -12SW

+12SW -12SW

+12SW -12SW

+12SW -12SW

+12SW -12SW

+12SW

-12SW

+12SW

-12SW

GND

GND

Vref

Vref

+12SW

+12SW

+12SW

NC

NC

+5VD

+5VD

CH2

CH1

CH3

CH4

NC

GND

NC

GND

AUXVSEL

MUTE 1,2,3,4

TEMPMON12

TEMPMON34

SD

SDPWS

AUTOMUTE

ENABLE

+5VC

LITEMOD4HCEVB

BLOCK DIAGRAM

14 : 10.Block diagram

Evaluation Board - KTP00477 | 25

14 : 11.Silkscreen

26 | MiniMod 4 | User guide

1

2

3

4

5

6

7

8

D D

C C

B B

A A

Power soft S .p.A.

Via E. C onti , 5

Project:

LITEMOD 4HC

This document contains proprietary informations

and patents which is the property of Powersoft S.p.A.,

that may not be disclosed, reproduced or used

without express written consent from Powersoft S.p.A.

BIAS1

1

DBIAS1

2

IN1+

3

IN1-

4

OUT1

5

V-

6

BUFIN1

7

BUFOUT1

8

BIAS2

16

DBIAS2

15

IN2+

14

IN2-

13

OUT2

12

V+

11

BUFIN2

10

BUFOUT2

9

U16

LM13700M

Q1

BC807-25L

Q3

BC807-25L

0603

C11

1u

0603

R24

4K7

0603

R30

22K

0603

R31

100K

0603R92K2

0603

R20

22K

0603

R16

470R

0603

R14

1K

0603

R17

47R

Q2

BC807-25L

0603

R27

22K

32

D1B

BAS28

41

D1A

BAS28

-12SW

+12SW

+12SW

-12SW

0603

C2

100p

0603

R18

47R

0603

R26

10K

0603

R13

18K

0603

R6

15K

0603

R3

15K

0603

R15

2K2

0603

R22

15K

Q6

BC807-25L

Q4

BC807-25L

0603

C20

1u

0603

R43

4K7

0603

R38

22K

0603

R39

100K

0603

R60

2K2

0603

R52

22K

0603

R58

470R

0603

R56

1K

0603

R53

47R

Q5

BC807-25L

0603

R40

22K

4 1

D2A
BAS28

32

D2B

BAS28

+12SW

-12SW

0603

C28

100p

0603

R54

47R

0603

R47

10K

0603

R59

18K

0603

R66

15K

0603

R68

15K

0603

R57

2K2

0603

R48

15K

CLIPLVL1

PWMLIM12

CLIPLVL2

PWMLIM12

1206

C4 10u

1206

C6 10u

1206

C23 10u

1206

C24 10u

0603R74K7

0603

R2

4K7

TP2

0603

R65

4K7

0603

R69

4K7

IN2EUNBAL

+/-0.1% 0603

R5

4K7

+/-0.1%

0603

R12

4K7

+/-0.1% 0603

R1

10K

0603

R4

330R

0603

R11

330R

+/-0.1%

0603

R21

10K

+/-0.1% 0603

R19

4K7

+/-0.1%

0603

R10

4K7

0603

C1

22p

0603

C10

22p

0603

C9

100p

0603C51n

0603C3100p

+/-0.1%

0603

R63

4K7

+/-0.1%

0603

R71

4K7

+/-0.1% 0603

R55

10K

0603

R62

330R

0603

R70

330R

+/-0.1%

0603

R73

10K

+/-0.1% 0603

R72

4K7

+/-0.1%

0603

R67

4K7

0603

C21

22p

0603

C29

22p

0603

C30

100p

0603

C251n0603

C22

100p

IN1EUNBAL

RedD5HSMH-C265

+12VC

nPROTECTEXT1

Green

D11

HSMG-C265

+12VC

RDY1

0603

R148

10K

0603

R165

10K

0603

R159

1M

0603

R170

1M

RedD6HSMH-C265

+12VC

nPROTECTEXT2

Green

D9

HSMG-C265

+12VC

RDY2

0603

R149

10K

0603

R163

10K

0603

R160

1M

0603

R167

1M

IN1_P

IN1_N

IN2_N

IN2_P

0603

R33

47R

0603

R42

47R

0603

C18

100p

0603

R36

2K2

0603

R41

2K2

IN1EUNBAL

IN1EXT_N

IN1EXT_P

0603

R64

47R

0603

R78

47R

0603

C27

100p

0603

R74

2K2

0603

R76

2K2

IN2EUNBAL

IN2EXT_N

IN2EXT_P

TP7

TP9

IN1EXT_P

IN1EXT_N

VOUT1MON

TEMPMON12

+12VA

-12VA

MUTE1

MUTE2

-12VA

+12VA

TEMPMON12

VOUT2MON

IN2EXT_N

IN2EXT_P

IOUT2MON

SDPWS12

SDPWS12

RDY1

RDY2

IOUT1MON

VMON12P

VMON12P

VMON12N

VMON12N

nPROTECTEXT2

nPROTECTEXT1

+5VA

+5VA

Pin3 = ID1 / Pin 32 = ID2

AUXVSEL

SDPWS12

0603

R25

10R

0603

R75

10K

0603

R77

1M

0603

C31

100p

VMON12N

VMON12N_BUFF

TP8

TP5

TP15

TP47 TP48

TP4

TP6

IN1_UNBAL

IN2_UNBAL

CH 1-2 Bridge

TP35 TP36

TP3

TP11

TP12

TP13

TP16

TP17

TP18

5

6

7

SO8

U1B

NE5532D

3

2

1

SO8

U1A

NE5532D

3

2

1

SO8

U4A

NE5532D

5

6

7

SO8

U4B

NE5532D

3

2

1

SO8

U11A

NE5532D

5

6

7

SO8

U11B

NE5532D

3

2

1

SO8

U12A

NE5532D

5

6

7

SO8

U12B

NE5532D

1

2

3

U15A

TL072CD

123456789

10111213141516171819202122232425262728293031323334

PL1

DS1011-34SBSiB7-B

2

3

1

PUSH

231

FEMALE

G

SO1

NC3FAAV-2

2

3

1

PUSH

231

FEMALE

G

SO2

NC3FAAV-2

TP54

TP55

TP56

TP65

TP66

TP69

3

2

1

SO8

U2A

NE5532D

5

6

7

SO8

U2B

NE5532D

0603

C7

100p

0603

R28

3K3

7

6

5

U15B

TL072CD

VMON12N_BUFF

CLIPLVL12

0603

R23

10R

CLIPLVL12

CLIPLVL12

Amber

D23

HSMA-C265

0603

R49

4K7

Amber

D22

HSMA-C265

0603

R44

4K7

1

2

3

SO-14

U18A

LMV324ID

7

6

5

SO-14

U18B

LMV324ID

8

9

10

SO-14

U18C

LMV324ID

14

13

12

SO-14

U18D

LMV324ID

0603

R219

1K6

0603

R209

1K33

0603

R132

1K8

0603

R127

4K7

0603

R215

100R

0603

R213

100R

TEMPMON12

0603

R217

10K

0603

R211

10K

0603

R207

10K

0603

R128

10K

Green

D28

HSMG-C265

Red

D34

HSMH-C265

Amber

D30

HSMA-C265

Amber

D32

HSMA-C265

+5VD

0603

R32

10K

MUTE1

MUTE2

0603

R29

4K7

D36

BAV20WS-7-F

0603

R37

4K3

1

2

3

U21A

TL072CD

PWMLIM12

TEMPMON12

0603

R105

220K

0603

R114

100K

123

SH

SW10

OS102011MS2QN1

123

SH

SW6

OS102011MS2QN1

123

SH

SW7

OS102011MS2QN1

123

SH

456

SW2

OS202011MS2QN1

123

SH

456

SW1

OS202011MS2QN1

123

SH

456

SW3

OS202011MS2QN1

ReverseCH1

ReverseCH2

Text

Text

0603

C51

100p

MUTE1 MUTE2

G

D

S

Q27

2N7002

SD

G

D

S

Q29

2N7002

1206

R228

0R

1206

R227

0R

0603

R237

1M

0603

R239

1M

0603

C79

1u

123

SH

456

SW4

OS202011MS2QN1

Vref12

Vref

Vref12

1

2

3

SH

4

5

6

SW19

OS202011MS2QN1

IN1_P

IN1_N

1

2

3

SH

4

5

6

SW21

OS202011MS2QN1

IN2_P

IN2_N

Green

D40

HSMG-C265

+5VD

+12SW

-12SW

0603

R245

2K2

1516

1825057-7

SW22H

1314

1825057-7

SW22G

1112

1825057-7

SW22F

910

1825057-7

SW22E

IN2BS_N

IN2BS_P

IN1S_N

IN1S_P

IN1SW_N

IN1SW_P

IN2SW_N

IN2SW_P

IN1EXTB_P

IN1EXTB_N

IN2EXTB_P

IN2EXTB_N

IN2S_N

IN2S_P

G

D

S

Q13

2N7002

G

D

S

Q14

2N7002

G

D

S

Q20

2N7002

G

D

S

Q17

2N7002

Text

0603

C49

100n

CH1-2

14 : 12.Schematic

Evaluation Board - KTP00477 | 27

1

2

3

4

5

6

7

8

CH_3-4.SchDoc

File:

Designed by:

Approved by:

Power soft S .p.A.

Via E. C onti , 5

50018 Scand icci ( FI)

Italy

www.p owers oft.i t

Tel. [phone]

Fax: [phone]

e-mai l: tec h@pow ersof t.it

Title:

Project:

Powersoft Code:

Date:

Evaluat ion Boar d

LITEMOD 4HC

This document contains proprietary informations

and patents which is the property of Powersoft S.p.A.,

that may not be disclosed, reproduced or used

without express written consent from Powersoft S.p.A.

[No Variations]

R&D Dept

15/12 /2017

1 1

SizeSheet of

A2

Rel.:

RedD7HSMH-C265

+12VC

nPROTECTEXT3

Green

D12

HSMG-C265

+12VC

RDY3

0603

R150

10K

0603

R166

10K

0603

R161

1M

0603

R171

1M

RedD8HSMH-C265

+12VC

nPROTECTEXT4

Green

D10

HSMG-C265

+12VC

RDY4

0603

R151

10K

0603

R164

10K

0603

R162

1M

0603

R168

1M

BIAS1

1

DBIAS1

2

IN1+

3

IN1-

4

OUT1

5

V-

6

BUFIN1

7

BUFOUT1

8

BIAS2

16

DBIAS2

15

IN2+

14

IN2-

13

OUT2

12

V+

11

BUFIN2

10

BUFOUT2

9

U17

LM13700M

Q7

BC807-25L

Q9

BC807-25L

0603

C45

1u

0603

R106

4K7

0603

R112

22K

0603

R113

100K

0603

R88

2K2

0603

R100

22K

0603

R95

470R

0603

R93

1K

0603

R96

47R

Q8

BC807-25L

0603

R109

22K

32

D3B

BAS28

41

D3A

BAS28

-12SW

+12SW

+12SW

-12SW

0603

C34

100p

0603

R97

47R

0603

R108

10K

0603

R92

18K

0603

R85

15K

0603

R82

15K

0603

R94

2K2

0603

R104

15K

Q12

BC807-25L

Q10

BC807-25L

0603

C54

1u

0603

R124

4K7

0603

R119

22K

0603

R120

100K

0603

R142

2K2

0603

R134

22K

0603

R140

470R

0603

R138

1K

0603

R135

47R

Q11

BC807-25L

0603

R122

22K

4 1

D4A

BAS28

32

D4B

BAS28

+12SW

-12SW

0603

C60

100p

0603

R136

47R

0603

R129

10K

0603

R141

18K

0603

R147

15K

0603

R153

15K

0603

R139

2K2

0603

R130

15K

CLIPLVL3

PWMLIM34

CLIPLVL4

PWMLIM34

1206

C36 10u

1206

C40 10u

1206

C57 10u

1206

C58 10u

0603

R86

4K7

0603

R81

4K7

0603

R146

4K7

0603

R154

4K7

TP33

IN4EUNBAL

+/-0.1%

0603

R84

4K7

+/-0.1%

0603

R91

4K7

+/-0.1% 0603

R79

10K

0603

R83

330R

0603

R90

330R

+/-0.1%

0603

R101

10K

+/-0.1% 0603

R98

4K7

+/-0.1%

0603

R89

4K7

0603

C33

22p

0603

C44

22p

0603

C43

100p

0603

C371n0603

C35

100p

+/-0.1%

0603

R145

4K7

+/-0.1%

0603

R156

4K7

+/-0.1% 0603

R137

10K

0603

R144

330R

0603

R155

330R

+/-0.1%

0603

R158

10K

+/-0.1% 0603

R157

4K7

+/-0.1%

0603

R152

4K7

0603

C55

22p

0603

C61

22p

0603

C62

100p

0603

C59

1n

0603

C56

100p

IN3EUNBAL

IN3_P

IN3_N

IN4_N

IN4_P

0603

R80

47R

0603

R103

47R

0603

C38

100p

0603

R99

2K2

0603

R102

2K2

IN3EUNBAL

IN3EXT_N

IN3EXT_P

0603

R117

47R

0603

R126

47R

0603

C53

100p

0603

R121

2K2

0603

R123

2K2

IN4EUNBAL

IN4EXT_N

IN4EXT_P

IN3EXT_P

IN3EXT_N

VOUT3MON

TEMPMON34

+12VB

-12VB

MUTE3

MUTE4

-12VB

+12VB

TEMPMON34

VOUT4MON

IN4EXT_N

IN4EXT_P

IOUT4MON

SDPWS34

SDPWS34

RDY3

RDY4

IOUT3MON

VMON34P

VMON34P

VMON34N

VMON34N

nPROTECTEXT3

nPROTECTEXT4

+5VB

+5VB

0603

R107

10R

0603

R125

10R

TP21

TP19

TP22

TP27

TP32

TP49 TP50

IN3_UNBAL

IN4_UNBAL

CH 3-4 Bridge

TP23

TP31

TP37

TP38

TP24

TP25

TP26

TP28

TP29

TP30

3

2

1

SO8

U6A

NE5532D

5

6

7

SO8

U6B

NE5532D

3

2

1

SO8

U9A

NE5532D

5

6

7

SO8

U9B

NE5532D

3

2

1

SO8

U13A

NE5532D

5

6

7

SO8

U13B

NE5532D

3

2

1

SO8

U14A

NE5532D

5

6

7

SO8

U14B

NE5532D

123456789

10111213141516171819202122232425262728293031323334

PL2

DS1011-34SBSiB7-B

2

3

1

PUSH

231

FEMALE

G

SO3

NC3FAAV-2

2

3

1

PUSH

231

FEMALE

G

SO4

NC3FAAV-2

TP67

TP68

TP70

TP71

5

6

7

SO8

U7B

NE5532D

3

2

1

SO8

U7A

NE5532D

CLIPLVL34

CLIPLVL34

Amber

D27

HSMA-C265

Amber

D26

HSMA-C265

0603

R115

4K7

0603

R116

4K7

0603

R45

10K

0603

R46

1M

0603

C8

100p

0603

R50

3K3

VMON34N

VMON34N_BUFF

1

2

3

U3A

TL072CD

TP1

7

6

5U3B

TL072CD

VMON34N_BUFF

CLIPLVL34

0603

C19

100p

SDPWS34

TP20

1

2

3

SO-14

U19A

LMV324ID

7

6

5

SO-14

U19B

LMV324ID

8

9

10

SO-14

U19C

LMV324ID

14

13

12

SO-14

U19D

LMV324ID

0603

R220

1K6

0603

R210

1K33

0603

R133

1K8

0603

R118

4K7

0603

R216

100R

0603

R214

100R

TEMPMON34

+5VD

0603

R131

10K

0603

R208

10K

0603

R212

10K

0603

R218

10K

Green

D29

HSMG-C265

Red

D35

HSMH-C265

Amber

D33

HSMA-C265

Amber

D31

HSMA-C265

+5VD

0603

R35

10K

MUTE3 MUTE4

0603

R34

4K7

D37

BAV20WS-7-F

TP10

0603

R51

4K3

7

6

5

U21B

TL072CD

PWMLIM34

TEMPMON34

85°C 0.826V

75°C 0.93V

50°C 1.65V

25°C 2.56V

0603

R110

220K

0603

R111

100K

123

SH

SW11

OS102011MS2QN1

123

SH

SW8

OS102011MS2QN1

123

SH

SW9

OS102011MS2QN1

123

SH

456

SW13

OS202011MS2QN1

123

SH

456

SW12

OS202011MS2QN1

123

SH

456

SW14

OS202011MS2QN1

ReverseCH3

ReverseCH4

0603

C75

100p

MUTE3 MUTE4

G

D

S

Q26

2N7002

G

D

S

Q28

2N7002

SD

1206

R232

0R

1206

R231

0R

0603

R236

1M

0603

R238

1M

AUXVSEL

0603

C80

1u

123

SH

456

SW5

OS202011MS2QN1

Vref34

Vref

Vref34

1
2
3

SH

4
5
6

SW18

OS202011MS2QN1

IN3_P

IN3_N

1
2
3

SH

4
5
6

SW20

OS202011MS2QN1

IN4_P

IN4_N

Green

D41

HSMG-C265

-12SW

+12SW

0603

R246

2K2

78

1825057-7

SW22D

56

1825057-7

SW22C

34

1825057-7

SW22B

12

1825057-7

SW22A

IN3S_N

IN3S_P

IN4BS_N

IN4BS_P

IN3SW_N

IN3SW_P

IN4SW_P

IN3EXTB_P

IN3EXTB_N

IN4EXTB_P

IN4EXTB_N

IN4S_N

IN4S_P

IN4SW_N

G

D

S

Q15

2N7002

G

D

S

Q16

2N7002

G

D

S

Q21

2N7002

G

D

S

Q18

2N7002

Text

0603

C81

100n

CH3-4

28 | MiniMod 4 | User guide

1

2

3

4

5

6

7

C C

B B

A A

0603

C14

100n

+12SW

-12SW

0603

C13

100n

+12SW

-12SW

-12VC -12SW

0603

R192

1K2

0603

R172

1K2

Q22

BC807-25L

+12SW+12VC

AUXVSEL= GND -> 12V

AUXVSEL= OPEN -> 15V

0603

R174

2K2

Green

D15

HSMG-C265

Green

D14

HSMG-C265

Green

D17

HSMG-C265

0603

R173

4K7

0603

R193

4K7

EnergySaveON

EnergySaveOFF

Q19

BC807-25L

Q25

BC817-25

G

D

S

Q24

2N7002

0603

R178

4K7

1

2

3

SO-14

U20A

LMV324ID

7

6

5

SO-14

U20B

LMV324ID

8

9

10

SO-14

U20C

LMV324ID

14

13

12

SO-14

U20D

LMV324ID

GND

11

Vcc

4

SO-14

U20E

LMV324ID

0603

R196

100K

IN1_P

IN2_P

IN3_P

IN4_P

0603

R202

100K

0603

R205

100K

0603

R206

100K

0603

R169

100K

IN1_N

IN2_N

IN3_N

IN4_N

0603

R177

100K

0603

R181

100K

0603

R183

100K

1206

C66 10u

1206

C70 10u

0603

C64

100p

0603

R182

220K

0603

C72

100p

0603

R199

220K

0603

R195

10K

0603

R185

10K

0603

R186

100K

0603

R200

100K

BIAS

BIAS

1206

C69 10u

0603

R189

2K2

0603

C65

100p

0603

R187

100K

0603

R194

10K

0603

C63

100n

+5VC

+5VC

0603

R197

10K

0603

R203

10K

0603

C73

1u

0603

R190

22K

1206

C71

10u

3 2

D16B

BAS28

0603

R191

100K

0603

R204

100K

0603

R198

2K2

41

D16A

BAS28

0603

C67

1n

0603

R179

100K

0603

R201

2K7

0603

C74

1u

0603

R176

47R

0603

C68

1u

SignalPre

G

D

S

Q23

2N7002

SignalPre

0603

R184

100K

Green

D13

HSMG-C265

0603

R180

2K2

0603

R188

1M

0603

R175

10K

0603

C48

100n

+12SW

-12SW

0603

C47

100n

+12SW

-12SW

0603

C26

100n

+12SW

-12SW

0603

C39

100n

+12SW

-12SW

0603

C17

100n

+12SW

-12SW

0603

C52

100n

+12SW

-12SW

0603

C12

100n

+12SW

-12SW

0603

C46

100n

+12SW

-12SW

TP44

TP42

TP41

TP53

TP52

TP43

Vcc-

4

Vcc+

8

SO8

U1C

NE5532D

Vcc-

4

Vcc+

8

SO8

U2C

NE5532D

Vcc-

4

Vcc+

8

SO8

U4C

NE5532D

Vcc-

4

Vcc+

8

SO8

U6C

NE5532D

Vcc-

4

Vcc+

8

SO8

U7C

NE5532D

Vcc-

4

Vcc+

8

SO8

U9C

NE5532D

Vcc-

4

Vcc+

8

SO8

U11C

NE5532D

Vcc-

4

Vcc+

8

SO8

U12C

NE5532D

Vcc-

4

Vcc+

8

SO8

U13C

NE5532D

Vcc-

4

Vcc+

8

SO8

U14C

NE5532D

0603

C16

100n

+12SW

-12SW

Vcc-

4

Vcc+

8

U3C

TL072CD

D20

SS14

D25

SS14

D21

SS14

D24

SS14

D18

SS14

D19

SS14

GND

11

Vcc

4

SO-14

U19E

LMV324ID

SOT-89

IN

3

OUT

1

GND

2

U8

L78L05ABUTR

GND

11

Vcc

4

SO-14

U18E

LMV324ID

+5VD

0603

C42

100n

0603

C41

100n

0603

C32

100n

+12SW

-12SW

Vcc-

4

Vcc+

8

U21C

TL072CD

Text

0603

C50

100n

+12SW

-12SW

Vcc-

4

Vcc+

8

U15C

TL072CD

123

SH

SW15

OS102011MS2QN1

Text

Text

Text

63V

C76

100uF

63V

C77

100uF

0603

R221

3M3

0603

R223

1M

0603

C78

100n

2.5V

0.65V

Gv = 2,2

Gv = 10

0603

R234

1M

123

SH

SW16

OS102011MS2QN1

0603

R235

100K

D38

BAV21W-7-F

WAKE_UP

WAKE_UP

L1

100u

L2

100u

Vref

+5VC

Green

D39

HSMG-C265

0603

R241

2K2

+12SW

+5VC

+5VD

+5VC

+12SW

+5VC

+12SW

+5VA +5VB +12VA +12VB

-12VA -12VB+5VC +12VC

-12VC

+5VD

0603

R243

100K

0603

R244

100K

0603

R242

0R

AUXVSEL

0603

C15

100n

0603

R2501K0603

R2491K0603

R2481K0603

R2471K0603

R2401K0603

R1431K0603

R871K0603

R611K0603R81K

15 16

1825057-7

SW17H

13 14

1825057-7

SW17G

11 12

1825057-7

SW17F

9 10

1825057-7

SW17E

7 8

1825057-7

SW17D

5 6

1825057-7

SW17C

3 4

1825057-7

SW17B

1 2

1825057-7

SW17A

TP14

G

D

S

Q30

2N7002

SOT23-5

2

53

4

U5

SN74LVC1G04DBVR

0603

R222

100R

SD

0603

R224

1K

0603

R225

1K

0603

C86

100n

+12SW-12SW

0603

C82

100n

0603

C83

100n

+12SW-12SW

0603

C84

100n

0603

C85

100n

0603

R226

100K

0603

C87

10u

SD

14 : 13.Power + Energy Save

15

Support and warranty

15 : 1.Service

There are no user-serviceable parts in your amplier.
Refer servicing to qualied technical personnel. In addi­tion to having an in-house service department, Powersoft
supports a network of authorized service centers. If your
amplier needs repair contact your Powersoft dealer (or
distributor). You can also contact the Powersoft Technical
Service department to obtain the location of the nearest
authorized service center.

15 : 2.Warranty

Powersoft guarantees its manufactured products to be
free from defective components and factory workmanship
for a period of 12 (twelve) months, starting from the date
printed in the invoice of purchase.

All warranty repairs and retrots must be performed at
Powersoft facilities or at an Authorized Service Center at
no cost for the purchaser. Warranty exclusion: Powersoft’s
warranty does not cover product malfunctioning or failure
caused by: misuse, abuse, repair work or alterations per­formed by non-authorized personnel, incorrect connec­tions, exposure to harsh weather conditions, mechanical
damages (including shipping accidents), and normal wear
and tear.

Powersoft will perform warranty services provided that
the product is not damaged during transportation.

15 : 2.1. Return of Goods

Goods can be returned to Powersoft only after they
have been granted a Return Merchandise Authorization –
RMA – number to be attached to the external packaging.
Powersoft (or its Authorized Service Center) has the right to
refuse any returned good without a RMA number.

15 : 2.2. Repair or replacement

Powersoft reserves the right to repair or replace any
defective goods covered by product warranty at its sole
discretion and as it deems best.

15 : 2.3. Cost and responsibility of transport

The purchaser (or end user/customer) is solely re­sponsible for all transportation costs and risks associated
with sending warranty covered goods to Powersoft or its
Authorized Service Center. Powersoft will assume full re­sponsibility and cover all costs incurred to send the goods
back to the purchaser (or end user/customer).

15 : 3.Assistance

Even though most product malfunctioning can be solved
at your premises through Powersoft Customer Care or
your direct knowledge, occasionally, due the nature of the
failure, it might be necessary to return defective products
to Powersoft for repair. In the latter case, before shipping,
you are kindly asked to follow step by step the procedure
described below:

 Obtain the “Defect Report Form” by contacting our

Customer Care Department via email: service@

powersoft.it or download the“Defect Report Form”.

 Fill out one “Defect Report form” for each returned

item (the form is an editable tab guided document)
and save as your name, amp model and serial number
(for example: distributorname-MDRIVE-17345.
doc) providing all required information except the
RMA code/s and send it to [email protected] for
Powersoft approval.

 In case of defect reports approved by the Powersoft

Customer Service Representative you will receive
an RMA authorization code (one RMA code for each
returning device). Upon receiving the RMA code
you must package the unit and attach the RMA
code outside the pack, protected in a waterproof
transparent envelope so it is clearly visible.

All returning items must be shipped to the following
address:

Powersoft S.p.A.

Via Cadolingi, 13

50018 Scandicci (FI) Italy

In case of shipment from countries NOT belonging
to the European Community make sure you have
also followed the instructions described in the
document available for download at the TEMPORARY
EXPORTATION / IMPORTATION PROCEDURE link at

http://www.powersoft-audio.com/en/support/service.

Thank you for your understanding and cooperation and
continued support as we work to improve our partnership.

29 | MiniMod 4 | User guide

30 | MiniMod 4 | User guide

16

Specifications

Construction

Dimensions 190 x 80 x 42 mm

Weight 500 g

AC Mains Power

Power supply Universal input, regulated Switch Mode with PFC

Nominal voltage 100-240 V AC @ 50- 60Hz

Operating Voltage 85-264 V AC

Power Factor cos > 0.9 @ 4 Ω full power

Consumption

Standby < 2.a W

Idle < 10 W
Rated Load (1/4 Max

Power)

150 W

AC Current Nominal 1.5 A | Ma x 7 A

Inrush Current 18

Aux Supplies

Max aux supply cu rrent draw @ +12 V 80 0 mA

Max aux supply cu rrent draw @ –12 V 200 mA

Max aux supply cu rrent draw @ +5V 50 mA

Fan plug - 12V Fan 10 0 mA

Audio

Gain 26 dB

Frequency Respo nse ( ±1 dB , 1 W @ 8 Ω) 10 Hz - 30 kHz

Noise Floor Typical -80 dBV (A)

Crosstalk Separation (1 kHz) Typical > 70 dB

Input sensitivity 4 dBu

Input impedance 13 kΩ balanced

THD+N (from 0.1 W to 1/2 Power) < 0.1% (typical < 0.0 5%)

DIM (from 0.1 W to 1/2 Power) < 0.1% (typical < 0.05%)

Thermal & Environment

Operating temperature &
Humidity

-20° to 65° C, 0 to 90% Non condensing

Thermal Dissipation Cooling Plate + Optional Fan

@ 230 V

1/8 Max Outp ut Power @ 4Ω 127 BTU/h

@ 115 V

1/8 Max Outp ut Power @ 4Ω 112 BTU/h

Vibration ETSI EN 300 019-2-2

EMC immunity EN 5510 3- 2

EMC emissions E N 5510 3-1

Safety standards IEC 60065

General

Maximum output power per c hannel @ 4Ω 150 W

Maximum output power per c hannel @ 8Ω 75 W

Maximum output power @ 8Ω bridge mode 300 W

Maximum output power @ 2Ω par allel mode 300 W

Maximum output power @ 4Ω par allel bridge mode 600 W

Maximum total power all cha nnels dr iven 6 00 W

Max Output Voltage and Current

Single Ended 35 V

peak

/ 10 A

peak

BTL 70 V

peak

/ 10 A

peak

PBTL 70 V

peak

/ 20 A

peak

Powersoft S.p.A.

Via Enrico Conti, 5

50018 Scandicci (FI) Italy

Tel: [phone]
Fax: [phone]

General inquiries: [email protected]

Sales: [email protected]

Application & technical support: [email protected]

Service & maintenance: [email protected]

Compliance questions: [email protected]

powersoft-audio.com