Hafler trans-nova P4000 Installation And Operation Manual

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P4000

PROFESSIONAL POWER AMPL

Installation & Operation

trans

nova

DESIGNED AND

ASSEMBLED IN THE

USA

PROFESSIONAL POWER AMPLIFIER

NOTICE - IMPORTANT SAFETY INFORMATION

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WARNING:

DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

TO PREVENT FIRE OR SHOCK HAZARD

"dangerous voltage" within the product's enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

1. READ INSTRUCTIONS

All the safety and operating instructions of your Hafler equipment should be read before power is applied to the equipment.

2. RETAIN OWNER'S MANUAL

These safety and operating instructions should be retained for future reference.

3. HEED WARNINGS

All warnings on the equipment and in the operating instructions are important and should be followed.

4. FOLLOW INSTRUCTIONS

All operating and use instructions are important and should be followed.

5. HEAT

The equipment should be kept away from areas of high temperature, i.e., heater vents, radiators, stoves/ovens, fireplaces, etc.

6. VENTILATION

The equipment should be used in an area suitable for proper ventilation. Care should be taken not to impede airflow in and around the cabinet.

7. WATER AND MOISTURE

The equipment should not be used in or around water, such as a bathtub, sink, or swimming area. Also, the equipment should not be used in areas prone to flooding, such as a basement.

the same three wire grounded connection. It is important that the blades of the equipment’s plug be able to fully insert into the mating receptacle. Never remove the round grounding pin on

the plug in an attempt to mate to a two wire ungrounded receptacle: use a grounding adaptor with the grounding tab or

wire suitably connected to earth ground.

11. NON-USE PERIODS

During periods of extended non-use, the power cord should be unplugged from the power source.

12. CLEANING

The equipment should be cleaned only as detailed in the operating instructions.

13. OBJECT AND LIQUID ENTRY

Care should be taken so that objects and/or liquids, such as cleaning fluids or beverages, are not spilled into the enclosure of the equipment.

14. DAMAGE REQUIRING SERVICE

Hafler equipment should be serviced by qualified service personnel when:

A. The power supply cord or plug has been damaged, or

B. Objects have fallen onto, or liquid has been spilled into the

equipment, or

8. POWER SOURCES

The equipment should be connected only to a power source of the same voltage and frequency as that listed on the rear panel above the power cord entry point.

9. POWER CORD PROTECTION

Power cords should be arranged so they do not interfere with the movement of objects in the room: people, fan blades, utility carts, etc. Also, care should be taken that the cord is not pinched or cut, and placed so it is not in danger of being pinched or cut, as in under a rug, around a tight corner, etc.

10. POWER CORD GROUNDING

The power supply cord is of a three wire grounded type, designed to reduce the risk of electric shock sustained from a live cabinet. It is assumed to be of suitable length for most uses of the equipment. The use of extension cords and power strips is discouraged unless they are of suitable rating to deliver the required total current for safe operation of all connected equipment. Furthermore, extension cords or power strips must provide

C. The equipment has been exposed to rain, or

D. The equipment does not appear to operate normally or

exhibits a marked change in performance, or

E. The equipment has been dropped, or the enclosure has

been damaged.

15. SERVICING

The user should not attempt to service the equipment beyond that which is described in the operating instructions. All other service should be referred to qualified service personnel.

16. CARTS AND STANDS

The equipment should be used with carts or stands only of sufficient strength and stability for the use intended.

An equipment and cart combination should be moved with care. Quick stops and starts, excessive force, and uneven surfaces may cause the equipment and cart combination to topple.

– i –

P ERFORMANCE SPECIFICATIONS

P4000

Power Rating: FTC (20Hz-20kHz, 0.2% THD)

200 wpc into 8Ω 275 wpc into 4Ω 550 wpc into 8Ω (bridged mono)

Signal-to-Noise Ratio: 100dB below rated output from 20Hz-20kHz “A” Weighted Frequency Response: 20Hz-20kHz, ±0.1dB

Bandwidth: 0.2Hz-200kHz, +0/–3dB Slew Rate: 100 V/µs

CMRR: >75dB at 1kHz Input Impedance: 47,000Ω per phase balanced Input Sensitivity Range: 710mV to 4V (@ 8Ω) per phase balanced

592mV to 4V (@ 4Ω) per phase balanced

In/Out Gain: +29dB maximum, –29dB minimum

Gain Control Range: 58dB

Damping Factor: 500 (to 1kHz); 150 (to 10kHz); 18 (to 100kHz)

Power Consumption: 120W / 1A @ 120VAC (Idle Power)

(Both Channels Driven) 250W / 2.1A @ 120 VAC (1/8 Power – 8Ω)

720W / 6A @ 120 VAC (Max. Power – 8Ω)

Controls & Switches: Front Panel Gain Control, Power Switch

Indicators: Signal LED, Clip LED, Thermal LED, Short LED, Line Power LED

Connectors: XLR & 1/4" combo input

5-way Binding Post output

IEC Standard Line input

Dimensions: 19"W x 11"D x 5-1⁄4"H (3-rack spaces)

(48.26cm x 27.94cm x 13.34cm)

Net Weight: 34 lbs. (15.42kg)

17.00

10.97

– ii –

19.00

Bridged

signal

therm

short

clipping

channel 1

P4000 trans•

nova

Mono

signal

short

clipping

therm

Normal

channel 2

.724

5.20

T ABLE OF CONTENTS

SAFETY PRECAUTIONS ........................................................................................................................................... i

PERFORMANCE SPECIFICATIONS ......................................................................................................................... ii

INTRODUCTION ................................................................................................................................................... 1

FRONT & REAR PANEL VIEW ................................................................................................................................2

INSTALLATION

Location ........................................................................................................................................................... 3

AC Line ............................................................................................................................................................ 3

Input................................................................................................................................................................. 4

Output Connections ......................................................................................................................................... 4

Monophonic Use.............................................................................................................................................. 4

OPERATION

Power Switch ................................................................................................................................................... 6

Level Controls .................................................................................................................................................. 6

Input Configuration Switch ............................................................................................................................... 6

Ground Switch ................................................................................................................................................. 7

Short Circuit Protection .................................................................................................................................... 7

LED Indicators .................................................................................................................................................. 7

Warm Up ......................................................................................................................................................... 7

Cleaning and Maintenance ............................................................................................................................... 7

TECHNICAL REFERENCE

Field Service Considerations ............................................................................................................................. 8

Theory and Operation of trans•

P4000 Functional Block Diagram ..................................................................................................................... 9

Schematic Diagram ........................................................................................................................................ 10

PC Board Layout............................................................................................................................................. 10

Parts List ......................................................................................................................................................... 13

Circuit Operation ........................................................................................................................................... 15

Amplifier Module Replacement ...................................................................................................................... 18

WARRANTY ......................................................................................................................................................... 19

nova ................................................................................................................

I NTRODUCTION

The Hafler P4000 is a three rack height, two channel professional power amplifier suitable for use in any situation where a moderately powered compact amplifier is required. The P4000 is particularly attractive for use in monitoring situations. Our trans•nova circuit topology and MOSFET output stage ensures trouble-free, long term operation and is backed by our five year warranty.

This manual contains information on using the P4000 amplifier. It is organized into three main sections. “Installation” covers the location and connection of the amplifier in the system. Like many precision components, careful attention to the initial setup can yield dividends in higher performance and trouble-free use. “Operation” covers the controls and features of the amplifiers and how to use them to get the best effect. The “Technical Reference” section contains field service information; in addition to the schematic and parts list there are block diagrams and circuit operation explanations useful for technicians. We strongly urge reading over the Installation and Operation portions of this manual before putting the amplifier into service.

The circuitry used in the Hafler Professional power amplifiers is our trans•nova (TRANSconductance Nodal Voltage Amplifier, U.S. Patent 4,467,288) circuit. The P4000 also utilizes our proprietary DIAMOND (Dynamically Invariant AMplification Optimized Nodal Drive, patent pending) transconductance driver stage which combines the linearity of Class A operation with the current headroom of a Class B system. When combined with the robust output stage used in the P4000, DIAMOND yields lower high frequency distortion without the sonic degradations associated with increasing the negative feedback. We have been using MOSFETs in our power amplifiers since the 1970's. During this time they have proven to be extremely fault tolerant, even in abusive situations. This ruggedness enables the amplifier to drive reactive speaker loads without the performance and sound degradations imposed by elaborate Safe Operating Area protection schemes.

Other specialized circuits which prevent damage to the amplifier and speakers have been carefully implemented. A soft start circuit prevents sending potentially destructive turn-on and turn-off transients to the speakers. A thermal sensing network continuously monitors the heatsink temperature and shuts down the amplifier to protect it from excessive operating heat. The need for internal fuses has been eliminated; a sensing circuit monitors the output and shuts down operation when it detects a short at the output.

Each channel of the amplifier has been built as a self-contained module. This modular arrangement simplifies construction and improves service accessibility. The circuit board assembly makes extensive use of surface mount components in the low power portion of the audio circuitry. Automated equipment is used to place and solder the components which yields greater uniformity and reliability.

The front panel has controls for input level adjustment and the power switch. In addition, LED indicators give a visual representation of the operating status of each channel. The THERMAL and SHORT indicators light to show when these protection circuits have been activated. The CLIP indicator helps prevent damaging the speaker by showing when the amplifier is overdriven. The SIGNAL indicator lights to show the presence of an audio signal.

– 1 –

channel 2

Bridged

Mono

Normal

P4000 trans•

nova

signal

clipping

thermal

short

thermal

clipping

signal

short

channel 1

CH 2

120 V~

60Hz

520W

CH 1 (Mono)

A Division of Rockford Corp.

Tempe, AZ 85281 U.S.A.

Made in the U.S.A.

Audio Ground

Chass. Float

CH 1

– +

8Ω

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WARNING: DO NOT REMOVE COVER

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK

DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

XLR Connections

–

Phone Connections

–

CH 2

– +

Mono

125 V T15A

4–8Ω

PUSH

Attention: Utiliser un fusible de rechange de même type.

CAUTION: For continued protection from risk of fire,

replace only with same type and rating of fuse.

Class 2

Wiring

230 V~

50/60Hz

510W

T6.3AL 250V

MODEL P4000CE

Front Panel View

Rear Panel View

– 2 –

I NSTALLATION

LOCATION

The P4000 power transformer can generate a substantial magnetic field, so caution should be exercised in the placement of low level components such as a tape deck, mixer or mic preamp to avoid inducing noise in the low level circuitry. The amplifiers can also produce considerable heat in normal operation so the primary consideration when determining a location for the amplifiers is to allow for adequate ventilation. The large heatsinks provide unrestricted airflow, but care must be taken to keep the slots in the bottom panel and top cover clear. If the amplifier is mounted in an equipment rack, make sure adjacent equipment does not impede cool air flow.

Rack systems should have two fans 4" to 5" in from the front of the amplifier blowing upward.

Los sistemas empotrados en gabinetes (rack), deben tener dos (2) ventiladores soplando hacia arriba, ubicados

de 10 a 12.5 ctms. detrás del frente del amplificador.

Les chaines stéreo Rack devraient avoir deux ventillateurs placés à 4 ou 5 centimètres, en face de l'amplificateur.

Rack Systeme sollten zwei eingebaute Ventilatoren haben, die Luft von oben auf den Verstärker leiten. Die

Ventilatoren sollten ca. 10-20cm hinter der Front des Verstärkers angebracht werden.

Per i sistemi ad armadio sono necessari due ventilatori direzionati in su collocati dai 10 ai 13 centimetri davanti

all'amplificatore.

Inadequate ventilation can shorten component life, especially when other equipment raises the ambient air temperature, so circulating fans should be considered in tight quarters.

4" to 5"

(from fan center)

(Bottom View)

Fan center approximately in line with edge of unit and starting of heatsink fins

• Fans placed 4" to 5" from front of unit

• Fans placed under the unit pointing upwards

• Recommended P4000 fan is 50cfm x 2

AC LINE

The P4000 amplifier operates from a 120 volt, 60Hz AC power line. Connection is made by a 16 gauge, IEC Type 320, grounded line cord. For safety considerations only a properly grounded (earthed) receptacle should be used. If a grounded circuit is not available, do not break off the ground pin; use the proper adapter plug for a two wire receptacle. Mounted on the rear panel is the line fuse which interrupts the power to the amplifier. If this fuse blows replace it only with the same type and rating fuse. The correct replacement fuse value is printed on the rear panel of the amplifier. If the new fuse blows, this is an indication of a fault with the amplifier. Servicing should be performed only by a qualified technician.

– 3 –

INPUT

The input jacks located on the back of the amplifier are dual function connectors which accept 1/4" Phone (Tip Ring Sleeve) or XLR plugs. The 1/4" Phone jack is connected according to conventional usage. The XLR jack is connected according to the IEC and AES standard.

XLR Balanced Input

Check output of source unit for proper signal polarity

INPUT FROM

SOURCE

Pin 1 = GND Pin 2 = (+) Pin 3 = (–)

1 2

GND

–

Check output of source unit for proper signal polarity

Tip = (+) Ring = (–) Sleeve = GND

1/4" TRS Balanced Input

INPUT

–

SHIELD

FROM

SOURCE

Many popular mixers use unbalanced outputs and can be used with the Hafler amplifier. To minimize residual ground noise, we recommend using twisted pair cable or short cable lengths in this type of configuration.

XLR Unbalanced Input

Connect (–) and GND (shield) terminals at

prevent unstable amplifier operation

INPUT FROM

both ends

of cable to

1/4" TRS Unbalanced Input

INPUT

FROM

SOURCE

Pin 1 = GND Pin 2 = (+) Pin 3 = GND

SHIELD

Tip = (+) Sleeve = GND

SHIELD

OUTPUT CONNECTIONS

The speaker output connectors are dual binding posts. These binding posts will directly accept 12 AWG wire or banana plugs and are spaced on 3/4" centers to accept dual banana plugs.

MONOPHONIC USE

For systems with high power requirements, the amplifiers can be configured for single channel bridged mono operation. To bridge the amplifier, set the front panel Normal/Bridged Mono switch to the Bridged Mono position. Only the Channel 1 input and level control is used. The speaker is connected to the RED output binding posts.

– 4 –

When the amplifier is bridged the output is floating. Any speaker which requires a common ground from

the amplifier output cannot be used in this application.

Cuando el amplificador esté en modo puente (bridge), la salida del mismo es flotante (sin neutro).

Cualquier parlante que necesite una tierra común de la salida del amplificador, no puede ser usado cuando el modo puente esté activado.

Lorsque l'amplificateur est relié, la puissance de rendement est émise. Tout haut-parleur nécessitant

l'utilisation d'une même fiche que celle de l'amplificateur, ne peut pas être utilisé dans cette application. Wenn der Verstärker gebrückt wird, ist der Ausgang schwimmend geerdet. Alle Lautsprecher, die

allgemeine Masse vom Verstärker nutzen, können in dieser Konfiguration nicht eingesetzt werden.

Nel caso di un'amplificatore ostruito, l'uscita é fluttuante non utilizzare in questa applicazione un

altoparlante che richiede la messa a terra in comune con l'uscita dell'amplificatore.

Since a bridged amplifier shares the load between the two channels, each channel will effectively drive half

of the load. Therefore, for bridged mono operation we recommend using an eight ohm load as the minimum impedance.

Ya que un amplificador en puente comparte la carga entre los dos canales, cada canal manejará

efectivamente la mitad de la carga. Por lo que, para la operación en modo puente (mono) recomendamos el uso de una carga de ocho ohmios como la mínima impedancia.

Étant donné que l'amplificateur, une fois connecté, distribue la même charge entre les deux canaux,

chaque canal conduira, de façon efficace, la moitié de la charge. C'est pourquoi, pour les opérations conduites en “mono”, nous recommandons l'utilisation d'une charge de huit ohm comme impédance minimale.

Wird der Verstärker gebrückt, “sieht” dieser nur die halbe angelegte Last. Aus diesem Grund geben wir für

die gebrückte mono Operation eine minimale Last von 8 Ohm vor. Visto che un'amplificatore ostruito divide il carico tra i due canali, ogni singolo canale in effetti conduce

meta del carico. Quindi, per il funzionamento monofonico ostruito dell'amplificatore si raccomanda l'utilizzo di un carico di 8 ohm impedenza minima.

– 5 –

O PERATION

POWER SWITCH

The POWER switch is located on the front panel of the amplifier. An internal lamp indicates when it is turned on.

Standard practice is to turn the amplifier on last and off first when switching components to prevent

sending damaging transients to the speakers. Es costumbre encender el amplificador de último y apagarlo de primero cuando se estan encendiendo/

apagando otros equipos, para así evitar el envío de transientes dañinas a los parlantes. Il est de pratique courante de commencer par tourner l'amplificateur sur “off” et de terminer par “on,”

lorsqu'il s'agit de prévenir l'envoie de passages nuisible aux haut-parleurs. Der Verstärker sollte als letztes Gerät eingeschaltet und als erstes Gerät wieder ausgeschaltet werden,

um eine Beschädigung der Lautsprecher durch spannungsspitzen zu vermeiden. L'uso comune consiglia l'accensione dell'amplificatore per ultimo e lo spegnimento per primo quando

si accendono i vari componenti, per evitare l'invio di transitori danneggianti agli altoparlanti.

It is possible to leave the power switch in the on position and switch the amplifier remotely through a power distribution block or preamp switched outlet. When doing so make sure the switch is rated for the current required by the amplifier.

LEVEL CONTROLS

The input sensitivity for each channel can be adjusted individually using the level controls on the front panel. The level controls are configured to allow each channel to be attenuated by –60dB and are marked from 10 (full output) to 0 (full attenuation).

In public systems where it is necessary to match levels, the knobs can be removed and the controls adjusted with your fingers or a flathead screwdriver. Cover the holes with the enclosed plugs to restrict access.

INPUT CONFIGURATION SWITCH

Normal/Bridged Mono

The amplifier operates in two-channel mode when the front panel Normal/Bridged Mono switch is in the Normal position. To use the amplifier in single channel, bridged mono applications, the front panel switch must be in the Bridged mono position. When the switch is set in the Bridged Mono position, the Channel 1 (+) and (–) inputs are connected to Channel 2 in reversed polarity, which inverts the Channel 2 output. Only the Channel 1 input is used, and the speaker is connected to the two positive (+) output terminals. The amplifier gain is adjusted by the Channel 1 level control; the Channel 2 control is not active.

For thermal considerations we do not recommend using less than a nominal eight ohm load on

the amplifier when running it in bridged mono. Por consideraciones térmicas, no recomendamos el uso de una carga nominal menor de ocho

ohmios cuando el amplificador esté trabajando en el modo puente. Pour de raisons thermales, nous ne recommandons pas d'envoyer à l'amplificateur, une charge de

valeur nominale inférieure à huit ohm, au moment du fonctionement en mode “mono.” Um thermische Störungen zu vermeiden, empfehlen wir in der mono Brückenschaltung die

minimale Last von 8 Ohm nicht zu unterschreiten. Per ragioni di natura termale non consigliamo l'uso di un carico nominale dell'amplifiactore

inferiore a 8 ohm nel caso di funzionamento monofonico ostruito.

– 6 –

GROUND SWITCH

Ground loops are characterized by a hum or buzz through the speakers and are caused by a voltage potential difference between two points in a ground circuit. Ground loops are aggravated when multiple paths exist for a given circuit. Mounting components in a rack with metal rails may introduce ground loops between associated equipment, because the rails can establish an additional ground path.

The CHASSIS/FLOAT switch allows you to select the amplifier grounding scheme for best system compatibility. With the switch in the CHASSIS position all signal grounds are referred to the chassis and power line ground.

In the FLOAT position the signal ground is decoupled from the chassis. The position of the switch is determined by the overall noise in the system; choose the position which gives the lowest hum.

SHORT CIRCUIT PROTECTION

Due to the self-protecting properties of the output power MOSFETs there is no need for sonically degrading voltage and current limiting circuits. To protect the amplifier from problems which may occur in the speaker

line there is an overload detection circuit.

In the event of a short in the speaker load or cables, the speaker detection circuit will shut down that

channel and light the front panel SHORT indicator. If this happens, correct the fault and turn the amplifier off, then back on to reset.

En el caso de un corto circuito en la carga de parlantes ó en los cables, el circuito de protección apagará

el canal correspondiente e iluminará el indicador de corto (SHORT) en el panel frontal. Si esto sucede, corrija la falla y apague el amplificador, luego enciéndalo de nuevo para volver a la condición normal de operación.

En cas de court-circuit de la charge ou des câbles, le circuit de détection du haut-parleur éteindra le canal

et allumera le bouton SHORT indiqué à l'avant. Si cela devait se produíre: éteignez l'amplificateur puis réallumez.

Ist ein Kurzschlub in den Lautsprechern oder in den Lautsprecherkabeln, wird eine Schutzschaltung

aktiv, die den entsprechenden Kanal abschaltet. Auf der Frontseite wird dies mit einer LED angezeigt. Sollte dies einmal passieren, beheben Sie den Fehler, schalten Sie den Verstärker aus und wieder ein. Dadurch wird in dem Verstärker ein Reset durchgeführt.

Nel caso di un cortocircuito nel carico dei cavi o degli altoparlanti, il circuito rivelatore di sovratensione

dell'altoparlante provvedra allo spegnimento del relativo canale e all'accensione dell'indicatore SHORT sul pannello anteriore. In questo caso rimediare al guasto, spegnere l'amplificatore e poi ripristinare.

LED INDICATORS

Amplifier operation is monitored internally and each channel has four status LEDs. These indicators can be used for system troubleshooting in case of aberrant behavior.

Signal Monitors the amplifier output and lights when a signal is present. The SIGNAL indicator

is calibrated to activate an equivalent input voltage of 30mV, with the amplifier set for full gain.

Clipping Monitors the DRIVE SIGNAL and lights when the drive signal voltage exceeds the

maximum level for linear operation of the output MOSFETs.

Thermal Indicates when the thermal protection has shut down the amplifier. This occurs when

the heatsink temperature becomes excessive.

Short Indicates when the output overload monitor detects a potentially damaging short and

shuts down amplifier operation. After clearing the fault, restore normal function by turning the amplifier off, then on again.

WARM UP

In order to achieve the best sonic performance and image stability from the amplifier, we recommend letting it warm up for 1 hour before beginning any critical listening.

CLEANING AND MAINTENANCE

There is no requirement for regular maintenance on the electronic components of the amplifier. If the case becomes soiled it can be cleaned using a soft cloth and a mild detergent, such as spray window or glass cleaner. If the amplifier is located in a particularly dusty environment cleaning the inside with compressed air or

vacuuming every 18 to 24 months is sufficient.

– 7 –

T ECHNICAL REFERENCE

FIELD SERVICE CONSIDERATIONS

A primary focus during the design and development of the P4000 was to ensure the dependability of the amplifiers. The

use of MOSFET output transistors and the low voltage trans• selection for the circuit assembly made the reliability goals achievable. However, a parallel effort was also undertaken to make sure any down time caused by an amplifier fault was minimized by making the amplifier technician “friendly.”

The modular construction allows exchanging the entire operational portion of either channel quickly and easily without

the need for soldering or specialized equipment.

This section of the manual contains descriptions of circuit operation and block diagrams to assist technicians with

component level repairs.

nova

input stage combined with careful component

THEORY AND OPERATION OF trans•

The trans• This patent describes the advantages of audio power amplifiers in which a MOSFET output stage is connected in a grounded source configuration. In this connection, the output stage has its full voltage gain of typically 20dB (ten times), instead of the usual 1dB loss of voltage follower designs. The output stage is further refined into a transimpedance stage (current-to-voltage converter), to achieve extremely short loop (fast) negative feedback. The output stage is driven cooperatively by a transconductance stage (voltage-to-current converter).

Using the output stage to supply voltage gain inherently increases the power gain (for the same bandwidth) of the output stage by typically ten times over the conventional follower connection, using the same MOSFET devices. This increase in efficiency allows the use of a much simpler input section than in the more common high voltage designs. The number of serial stages, from input to output has been reduced from five or more to only four. This also allows the input section to be designed with the criteria of high quality Class A line amp with the characteristic high linearity and wide bandwidth.

The disadvantage of the Class A driver stage is the limited current headroom available. A conventional Class A transconductance stage has a 2:1 or 6dB limit on peak to quiescent current. The number of MOSFETs used in the P4000 imposes a significant capacitive load on the driver stage, enough of a load to strain the ability of the driver to deliver the required current at the higher audio frequencies.

Since the operation of the transconductance driver stage is a major factor in the reproduction quality of the amplifier, we developed our proprietary DIAMOND (Dynamically Invariant AMplification Optimized Nodal Drive, patent application in process) circuit to satisfy the current headroom requirements. DIAMOND does this by smoothly and continuously varying the current transfer ratios of the two transconductance paths, under the control of the signal current itself. This implementation allows the current transfer ration of one path to be smoothly and continuously reduced to zero while the other path is smoothly and continuously increased by a factor of two. This yields an additional 14dB of current headroom to drive the MOSFETs. The result is a dramatic reduction in high frequency distortion, combined with improved ultrasonic stability.

nova

(TRANSconductance Nodal Voltage Amplifier) principle is based on our 1984 U.S. patent 4,467,288.

nova

– 8 –

P4000 FUNCTIONAL BLOCK DIAGRAM

+17V

Current Mirror

Q104, Q105

Positive Driver

Cascode Q9, Q10

Positive Output Q4, Q15, Q115

B+

Positive Input

Buffer

U1A

Balanced Signal

Negative Input

Buffer

U1B

Level

Adjust

R24 A, B

–17V

Positive Buffer

U2A

DC Offset

Integrator

U2B, R11, C332

Protection Switch,

Soft Start Delay

Q1, C29, R13

CMRR Adjust

DIAMOND

Differential Amp

+ –

Q6, Q7

Current Source

Q103

CR16,

Q13,

Q14

Feedback

Network

Negative Driver

Cascode

Q11, Q12

Drive Signal

Bias

Adjust

R136

Local

Feedback

Negative Output

Q5, Q16, Q116

Output

B–

– 9 –

S CHEMATIC DIAGRAM

NOTES: Unless specified otherwise

1. All resistors in ohms.

2. All capacitors in microfarads.

3. Channel 1 only shown.

– 10 –

Model P4000CE

6.3A

SLO-BLO

230 VAC 50/60Hz

LINE NEUTRAL GROUND

GRN/YLW

BLK

SLO-BLO

120 VAC

60 HZ

– 11 –

BLK

15A

WHT

AC CAPACITOR

BLK

PRI. A

BLK/WHT

PRI. B

BLK

BRIDGE

RECTIFIER

ORG

WHT/ORG

ORG

BLU

WHT/BLU

BLU

+RED

-BLU CT1

AC3

AC4

CT2

PC BOARD LAYOUT

PC-1487-C

– 12 –

P ARTS LIST

DESIGNATOR VALUE PART #

ALL RESISTORS IN OHMS

R1 56.2k, 1/4W, 1% RMP/4-5622 R2 1k, 1/4W, 1% RM/4-1001C R3 47k, 1/4W, 5% RM/4-473C R4 47k, 1/4W, 5% RM/4-473C R5 4.7k, 1/4W, 5% RM/4-472C R6 4.7, 1/4W, 5% RM/4-047C R7 909, 1/4W, 1% RM/4-9090C R8 200, Trim Pot RVH-201 R9 1k, 1/4W, 1% RM/4-1001C R10 28k, 1/4W, 1% RMP/4-2802 R11 2.2M, 1/4W, 5% RM/4-225C R12 28k, 1/4W, 1% RM/4-2802C R13 470k, 1/4W, 5% RM/4-474C R14 47.5, 1/4W, 1% RM/4-0475C R15 3.3M, 1/4W, 5% RM/4-335C R16 4.7k, 1/4W, 5% RM/4-472C R17 10k, 1/4W, 5% RM/4-103C R18 100k, 1/4W RM/4-104C R19 604k, 1/4W, 1% RM/4-6043C R20 45.3k, 1/4W, 1% RM/4-4532C R21 2.2M, 1/4W, 5% RM/4-225C R22 100k, 1/4W RM/4-104C R23 100k, 1/4W, 5% RM/4-104C R24 10k Pot, Dual RV-0818 R25 820, 1/4W, 5% RM/4-821C R26 2.2M, 1/4W, 5% RM/4-225C R27 316, 1/4W, 1% RM/4-3160C R28 316, 1/4W, 1% RM/4-3160C R29 3.92k, 1/4W, 1% RM/4-3921C R30 3.92k, 1/4W, 1% RM/4-3921C R31 100, 1/4W, 5% RM/4/101C R32 100, 1/4W, 5% RM/4/101C R33 47.5, 1/4W, 1% RM/4-0475C R34 470, 1/4W, 5% RM/4-471C R35 220, 1/4W, 5% RMP/4-221C R36 1k, 1/4W, 1% RM/4-1001C R37 1k, 1/4W, 1% RM/4-1001C R38 3.3M, 1/4W, 5% RM/4-335C R39 1k, 1/4W, 1% RM/4-1001C R40 1k, 1/4W, 1% RM/4-1001C R41 10k, 1/4W, 5% RM/4-103C R42 10k, 1/4W, 5% RM/4-103C R43 15k, 1/4W, 5% RM/4-153C R44 10k, 1/4W, 5% RM/4-103C R45 15k, 1/4W, 5% RM/4-153C R46 47k, 1/4W, 5% RM/4-473C R47 47k, 1/4W, 5% RM/4-473C R48 15k, 1/4W, 5% RM/4-153C R49 6.8k, 1/4W, 5% RM/4-682C R50 4.7k, 1/4W, 5% RM/4-472C R51 4.7k, 1/4W, 5% RM/4-472C R52 4.7k, 1/4W, 5% RM/4-472C R53 2.2M, 1/4W, 5% RM/4-225C R54 10k, 1/4W, 5% RM/4-103C R55 100k, 1/4W, 5% RM/4-104C R56 15k, 1/4W, 5% RM/4-153C R57 10k, 1/4W, 5% RM/4-103C R58 100k, 1/4W, 5% RM/4-104C R59 10k, 1/4W, 5% RM/4-103C R60 68, 1/4W, 5% RM/4-680B R61 100k, 1/4W, 5% RM/4-104C R62 2.2M, 1/4W, 5% RM/4-225C R63 28k, 1/4W, 1% RM/4-2802C R64 100k, 1/4W, 5% RM/4-104C R65 56, 1/4W, 5% RM/4-560C R66 56, 1/4W, 5% RM/4-560C R67 100, 1/4W, 5% RM/4-101C R68 100, 1/4W, 5% RM/4-101C R69 100, 1/4W, 5% RM/4-101C

– 13 –

DESIGNATOR VALUE PART #

R70 100, 1/4W, 5% RM/4-101C R73 470, 1/4W, 5% RM/4-471C R74 220, 1/4W, 5% RM/4-221C R123 2k, 1/4W, 5% RM/4-202C R124 820, 1/4W, 5% RM/4-821C R127 2k, 1/4W, 5% RM/4-202C R128 100, 1/4W, 5% RM/4-101C R129 100, 1/4W, 5% RM/4-101C R130 2k, 1/4W, 5% RM/4-202C R131 1k, 1/4W, 1% RM/4-1001C R132 1k, 1/4W, 1% RM/4-1001C R133 1k, 1/4W, 1% RM/4-1001C R134 100, 1/4W, 5% RM/4-101C R135 1k, 1/4W, 1% RM/4-1001C R136 200 Trim Pot RVH-201 R138 100, 1/4W, 5% RM/4-101C R139 470, 1/4W, 5% RM/4-471C R140 1k, 1/4W, 1% RM/4-1001C R141 470, 1/4W, 5% RM/4-471C R159 470, 1/4W, 5% RM/4-471C R164 220, 1/4W, 5% RM/4-221C

C1 680pf, 500v Mica CM-681 C2 .22µF, 50V CYV-224 C3 6800µF, 80V, Electrolytic CERS-688D C4 6800µF, 80V, Electrolytic CERS-688D C5 6800µF, 80V, Electrolytic CERS-688D C6 270pF, 50V CDS-271CAAA C7 270pF, 50V CDS-271CAAA C8 7.0pF, 500V, Mica CM-070 C9 0.1µF, 50V CDS-104CCDB C10 6800µF, 80V, Electrolytic CERS-688D C11 0.1µF, 50V CYV-104 C12 0.1µF, 50V CYV-104 C13 470µF, 50V, Electrolytic CER-477C C14 470µF, 50V, Electrolytic CER-477C C15 0.1µF, 50V CDS-104CCDB C16 0.1µF, 50V CDS-104CCDB C17 0.1µF, 50V CYV-104 C18 0.1µF, 50V CYV-104 C19 0.1µF, 50V CYV-104 C20 0.1µF, 50V CYV-104 C21 47pF, 500V, Mica CM-470 C22 0.1µF, 50V CYV-104 C23 0.47µF, 50V CYV-474 C24 0.47µF, 50V CYV-474 C25 0.1µF, 50V CDS-104CCDB C26 1µF, 50V, Electrolytic CER-105C C27 7.0pF, 500V, Mica CM-070 C28 47µF, 16V, Electrolytic CER-476 C29 10µF, 50V, Electrolytic CER-106C-024 C30 0.1µF, 50V CDS-104CCDB C31 0.1µF, 50V CYV-104 C32 0.1µF, 50V CYV-104 C33 0.1µF, 50V CDS-104CCDB C35 47pf, 500V, Mica CM-470 C36 22pf, 500V, Mica CM-220 C112 100µf, 50V, Electrolytic CER-107A C113 100µf, 50V, Electrolytic CER-107A C114 100pf, 100V, Disk CD-101 C115 100pf, 100V, Disk CD-101 C116 .047µF, 50V CYV-473 C332 .47µF, 50V CYV-474

Q1 MMBT3904L, NPN SS-0792 Q2 LM-317 + Regulator SS-1375 Q3 LM-337 – Regulator SS-1376 Q4 N Channel MOSFET SS-741T Q5 P Channel MOSFET SS-740T Q6 MMBT5088L SS-0114

DESIGNATOR VALUE PART #

Q7 MMBT5088L SS-0114 Q8 MMBT3904L SS-0792 Q9 MPS-A56 SS-101A Q10 MPS-A56 SS-101A Q11 MPS-A06 SS-102A Q12 MPS-A06 SS-102A Q13 MMBT5088L SS-0114 Q14 MMBT5087L SS-0115 Q15 N Channel MOSFET SSH-741T Q16 P Channel MOSFET SSH-740T Q103 MMBTA06L SS-102SM Q104 MMBT3906L SS-0791 Q105 MMBT3906L SS-0791 Q115 N Channel MOSFET SSH-741T Q116 P Channel MOSFET SSH-740T CR1 LED Red SS-741 CR2 LED Red SS-741 CR3 LED Red SS-741 CR4 LED Green SS-740 CR5 MMBD914L Diode SS-803SM CR6 MMBD914L Diode SS-803SM CR7 MMBD914L Diode SS-803SM CR8 MMBD914L Diode SS-803SM CR10 Bridge Rectifier, 1.5 Amp SS-0800 CR11 BAV99L Dual Diode SS-260SM CR12 BAV99L Dual Diode SS-260SM CR13 MMBD914L Diode SS-803SM CR14 BAV99L Dual Diode SS-260SM CR15 BAV99L Dual Diode SS-260SM CR16 BAV99L Dual Diode SS-260SM

Components marked with this symbol are safety critical

and should only be replaced with identical components.

Los componentes marcados con el simbolo son

imprescindibles para la protección del equipo, por lo

cual que solo sean reemplazados por los mismos componentes.

Les componsants marqués du symbole sont indis-

pensables à la sécuritée et ne peuvent être remplacés

qu'avec des composants identiques.

Bauteile, die mit einem gekenzeichnet sind, sind

sehr wichtig und dürfen nur mit den orginal Ersatzteilen ausgetauscht werden.

I componenti contrassegnati da sono critici per la

sicurezza e devono essere rimpiazzati solo con ricambi

di valore identico.

J1 Input Jack, Combo CC-0588 JW1 4-Pin Header CC-0970 JW7 6-Pin Dual Header CC-673 SW1 DPDT Slide Switch SW-0280 SW2 DPDT Slide Switch SW-0280

U1 TL072CD Opamp SS-143SM U2 TL072CD Opamp SS-143SM U4 LM339 Quad Comparator SS-730SM U5 LM339 Quad Comparator SS-730SM

Power Switch SWH-1009 IEC Connector CC-0852 IEC Line Cord FAH-146 Transformer TT-1501-B Bridge Rectifier, 25 Amp SSH-609 Thermistor, 10k SS-1519-A Thermal Insulator HW-1494-A Dual Binding Post CC-0867 2 by 3 Jumper CC-648 Gain Knob KN-0838

F1 Fuse, 1A Fast FS-1592 F2 Fuse, 1A Fast FS-1592 Line Fuse Fuse, 15A Slo Blo FS-1773

Surge Limiter FA-1517-A AC Capacitor FA-1502-A

! !

IEC Line Cord FA-1464-A Transformer TT-1617-A

Fuse, 6.3A Slo Blo (5 x 20mm) FS-1835 Fuse Cap FS-1125

Model P4000CE

– 14 –

CIRCUIT OPERATION

trans•nova Implementation

The transistor Q1 is configured to operate as a switch which controls the current source, Q103, of the input differential amp, Q6 and Q7. When Q1 is off the emitter voltage is low turning off Q103. Timing of the Soft Start function is controlled by the charging time of C29 through R13. The THERMAL and OVERLOAD Protection circuits use Q1 to shut down the channel when they activate.

U1A and U1B are buffer amps configured as unity gain, non-inverting voltage followers which feed the attenuator network comprised of the level control R24A, and R24B and the resistor R6 which establishes the 60dB adjustment range. The output of U2A and U1B is connected to the input of the differential amp. U2B is configured as a DC servo integrator to null the input offset currents.

The output of the differential amp is fed to the driver stage by Q13 and Q14 which perform the DIAMOND transconductance steering function. The cascode pairs Q9, Q10 and Q11, Q12 supply the signal voltage and current needed to drive the output stage Q4, Q115, Q15, and Q116, Q5, Q16.

Class AB bias current is controlled by R136.

Loop feedback is supplied by the network R1 and C1, and global feedback by R10 and C8.

CALIBRATION

WARNING: Only a competent technician should attempt the following procedure. PRECAUCION: Sólo un técnico competente debe intentar efetuar el siguiente procedimiento. MISE EN GARDE: Seul un technicien compétent devrait procéder à l'opération suivante. WARNUNG: Nur ein speziell geschulter Techniker sollte die nachfolgende Prozedur durchführen. AVVISO: La seguente procedura va eseguita soltanta da un tecnico di competenza.

Bias:

The bias control establishes the quiescent Class AB output current of the amplifier. The bias should not need readjustment from the factory setting; however, if the amplifier is repaired and output devices have been changed, or if the two channels of the amplifier do not run at the same temperature, calibrating the bias is necessary. Disconnect the power to the amplifier before removing the cover. To adjust the bias, disconnect the input and speakers and remove the jumper JW7. Connect an amp meter across the exposed pins. Adjust R136 to get a current reading of 300 mA.

Calibrating Common Mode Rejection:

The input common mode null is adjusted by the trim pot R8. The CMRR should be greater than 75dB below rated output. If the CMRR requires adjustment, feed the amplifier input with a common mode signal and adjust R8. Disconnect the power to the amplifier before removing the cover. Use a sinewave generator set to 1 volt output at 1kHz. Connect the generator signal output to the tip and ring of a 1/4" plug and ground to the sleeve. Plug this into the amplifier input. Connect an AC voltmeter to the amplifier output binding posts. Adjust R8 to give the lowest voltage output from the amplifier. For a temporary adjustment when a signal generator and voltmeter are not available, use an FM tuner and tune it to an unused station as your signal source, and connect the signal to the amplifier as described above. Connect the amplifier output to a small full range speaker. Turn the amplifier level controls full down and turn the amplifier on. Turn up the level control until you hear a signal through the speaker. Alternate between adjusting R8 for the lowest output signal and increasing the input control until you have the level control full. There should be very low output from the amplifier if any is detected at all.

– 15 –

Output Short Protection

Protection

Switch

Drive Signal

Output

Signal

Clip Detector

U4B

Drive Clip/Output

Comparator

U4A

Short Latch

U4C

Overload Indicator

CR1

The Short detector monitors the Drive Signal and Output Signal levels and shuts down that channel when a shorted output condition is detected. Recovering for the Short protection requires turning the amplifier off to reset it.

The comparator U4B monitors the Drive Signal and goes low when the drive level is sufficient to clip the output stage. The drive signal clip status is connected to the input of U4A on pin 7, the Output Signal is connected to the input of U4A on pin 6. The output of U4A goes low when pin 7 is low and pin 6 is near zero.

This condition, indicating high drive voltage and low output voltage, occurs only when the output is grounded. If the output of U4BA is low for the time sufficient for C26 to charge, then U4C latches low activating the protection switch Q1 and lighting the indicator CR1. The output of U4C is held low by CR14 and will reset only after the power is turned off.

– 16 –

Thermal Protection

Soft Start Switch

Tem p

TS1, R25

Comparator

U5B

THERMAL Indicator

CR2

The thermal protection is activated, and shuts down audio operation, when the amplifier heatsink reaches an excessively high temperature. The voltage divider R22 and R23 establishes the reference voltage on pin 5 of U5B. The control voltage on pin 4 is established by the voltage divider TS1 and R25. TS1 is a NTC (Negative Temperature Coefficient) thermistor, mounted on the heatsink. As TS1 warms and the resistance falls, the voltage on pin 4 rises. When the voltage on pin 4 exceeds the voltage on pin 5, the output on pin 2 goes low, shutting down the Soft Start switch Q1 and lighting the THERMAL indicator.

Clipping Indicator

Drive

Signal

Clipping

Detector

U5A

LED Driver

U5C

CLIP Indicator

CR3

The CLIP indicator is driven by the comparator U5A. The voltage divider R56 and R57 established the reference voltage for the Clipping detector at pin 7 of U5A. The reference voltage scales the output of U5A to indicate when the Drive Signal, at pin 6, demands in excess of the available voltage or current of the output stage.

Signal Present Indicator

Amplifier

Output

Signal

Detector

U5D

LED Driver

SIGNAL

Indicator

CR4

The SIGNAL indicator is controlled by the comparator U5D and the transistor Q8. The amplifier output is connected to the input pin 9. The voltage divider R58 and R59 scales the output voltage to change the comparator output stage at an equivalent input voltage of 30mV. The output at pin 14 controls the transistor Q8 to shunt across and turn off the LED CR4.

– 17 –

AMPLIFIER MODULE REPLACEMENT

The amplifier modules have been designed to eliminate the need for a special workplace if a field exchange becomes necessary. All wire connections are made with quick connect terminals so soldering is not necessary. The following tools are needed to disassemble the amplifier:

Allen wrench, 9/64 Allen wrench, 7/64 Phillips screwdriver, #1 tip Thin nose pliers

1. Locate the 9/64 Allen head screws on the top edge of the amplifier between the heatsink fins. Remove these and the Phillips head screws holding the input jacks on the rear panel. Lift the rear of the cover and remove it from the amplifier. Take the knobs off the level controls.

2. Remove the 9/64 Allen screw located behind the rack ears and the three 9/64 screws on the bottom edge of the heatsink. This frees the module from the chassis and it can be lifted clear.

3. Unplug the gray Mono cable connecting the two modules. Disconnect the red and black output wires and all transformer secondary wires from the PC board and bridge rectifier.

4. Prepare a new Channel 1 module for installation by setting the NORMAL/BRIDGED MONO switch to the default position according to the arrow marked on the PC board. Prepare a Channel 2 module by duplicating the switch setting of the module which was removed.

5. Install the new module and check the position and alignment of the LEDs. Replace the level control knob and check its alignment while securing the module.

6. After the module is secured, reconnect the wires according to the following chart:

Wire Color Function Terminal Size

Red Audio Output RED 1/4"

Black Output Ground BLK 1/4"

Orange/White Transformer Center Tap CT1 1/4"

Blue (2) Low Voltage Secondary AC3, AC4 1/8"

Blue/White Low Voltage Center Tap CT2 1/8"

+ Red High Voltage DC Bridge Rect. + 1/4"

– Blue High Voltage DC Bridge Rect. – 1/4"

– 18 –

SERVICE POLICY AND LIMITED WARRANTY

Rockford Corporation (Hafler Division) offers a limited warranty on Hafler products on the following terms:

• Length of Warranty

5 years on P1000, P1500, P3000, P4000 7 years on P9505 and P7000 90 days on all B-Stock (receipts are required)

• What is Covered

This warranty applies only to products sold to the original owner (non-transferable). This only applies to units sold in the Continental United States. You are required to have a copy of the receipt stating the customer's name, dealer name, product purchased and date of purchase.

• Products found to be defective during the warranty period will be repaired or replaced (with product deemed to be

equivalent) at Hafler's discretion.

• What is NOT Covered

1. Damage caused by accident, abuse, improper operations, water, theft

2. Service performed by anyone other than Hafler or an Authorized Hafler service center

3. Any product purchased outside the United States (please contact your local dealer)

4. Shipping charges to get the unit to Hafler

5. Any product which has had the serial number defaced, altered, or removed

• Limit on Implied Warranties

Any implied warranties including warranties of fitness for use and merchantability are limited in duration to the period of the express warranty set forth above. Some states do not allow limitations on the length of an implied warranty, so this limitation may not apply. No person is authorized to assume for Rockford Fosgate any other liability in connection with the sale of the product.

• How to obtain service or technical support

Please call 1-800-669-9899 for Rockford/Hafler support. You must obtain an RA # (return authorization number) to return any products to Hafler. You are responsible for shipment of product to Hafler.

Rockford Corporation Hafler Division 2055 E. 5th Street Tempe, Arizona 85281

– 19 –

ADVERTENCIA – INFORMACION DE SEGURIDAD IMPORTANTE

El símbolo de flecha relámpago dentro de un triángulo equilátero, es para alertar al usario de la presencia de “voltajes peligrosos” no aislados en el interior del aparato, los cuales pueden ser de suficiente magnitud para constituir un riesgo de choque eléctrico a las personas.

El símbolo de exclamación dentro de un triángulo equilátero, es para alertar al usuario de la presencia de instrucciones importantes de operación y mantenimiento (servicio) en la documentación que acompaña al equipo.

SPAÑOL

PELIGRO

RIESGO DE DESCARGA

ELÉCTRICA NO ABRÍR.

PRECAUCÍON:

Para Prevenir el incendio o la descarga electrica, no

exponer este equipo a la lluvia o a la humedad.

1. LEA LAS INSTRUCCIONES

Todas las instrucciones de seguidad y operación de su equipo Hafler, deben ser leídas antes de que el equipo sea conectado dléctricamente.

2. CONSERVE EL MANUAL DEL PROPIETARIO

Estas instrucciones de seguridad y operación, deben ser conservadas para futuras referencias.

3. CUADROS DE ADVERTENCIAS

Todas las advertencias en el equipo y en las instrucciones de operación, son importantes y deben ser seguidas.

4. SIGA LAS INSTRUCCIONES

Todas las instrucciones de uso y operación son importantes y deben ser seguidas.

5. CALOR

El equipo debe ser mantenido lejos de areas de alta temperatura, como por ejemplo: ventilaciones de calentadores, radiadores, estufas/hornos, hogueras, etc.

6. VENTILACION

El equip debe ser usado en áreas con ventilación adecuada. Deben er tornadas las precauciones necesarias para no impedir el flujo de aire dentro y alrededor del aparato.

7. AGUA Y HUMEDAD

El equipo no debe ser usado en el agua ó alrededor de ésta, tales como en una bañera, tanque o áreas de nado. También, el equpo no debe ser usado en áreas propensas a inundaciones, tales como en un sótano.

no es recomendado, a menos que tengan el amperaje adecuado para poder suministrar la corrioente requerida pra la operación segura de todo el equipo conectado. Aun más, las extensiones deben proveer de la misma conección aterrada de tres hiles. Es importante que el enchufe se pueda introducir comjpletamente en el receptáculo. Nunca remeva el pin de aterramiento en un intento por conectar el cable en un receptáculo de dos hilos no aterrado: use un adaptador de aterramiento que esté adecuadamente conectado a un punto de tierra.

11. PERIODOS SIN USO

Durante períodos prolongados sin uso del equipo, el cable de corriente debe ser desconectado de la fuente de electrixidad.

12. LIMPIEZA

El equip debe ser limpiado solo en la forma que se detalla en las instruxxiones de operación.

13. INTRODUCCIÓN DE OBJETOS Y LIQUIDO

Deben ser tornadas precauciones con el fin de que objetos y/ó líquidos, tales como fluidos de limpieza y gaseosas, no sean derramados dentro del chassis del aparato.

14. DAÑOS QUE REQUIEREN DE SERVICIO

Los equipos Hafler deben ser llevados a servicio por personal calificado cuando:

A. El cable de corriente ó el enchufe haya sido dañado, ó

B. Objetos ó líquido hayan sido introducidos ó derramado en

el equipo, ó

8. FUENTES DE PODER

El equipo debe ser conectado a una fuente de poder del mismo voltaje y frecuencia que el indicado en el panel trasero sobre el punto de entrada del cable de corriente.

9. PROTECCION DEL CABLE DE CORRIENTE

Los cables de corriente deben ser dispuestos de forma tal que no interfieran con el movimiento de objetos en la sala: personas, aspas de ventilación, carretillas, etc. También, es necesario tener cuidado de que el cable no esté punzado o cortado, y debe estar ubicado de forma tal que esto no ocurra, como podría suceder debajo de una alfombra o al pasar el cable por una esquina aguda, etc.

10. ATERRAMIENTO DEL CABLE DE CORRIENTE

El cable de corriente es del tipo aterrado de tres hilos, diseñado para reducir el riesgo de una descarga eléctrica procendent de un chasis energizado. Se asume que su longitud es suficiente para la mayoría de usos del equipo. El uso de extensiones y multienchufes

C. El equipo haya sido expuesto a lluvia, ó

D. El equipo aparenta no operar normalmente ó exhibe un

marcado cambio en su desempeño, ó

E. El equipo se ha caído, o el chassis ha sido golpeado.

15. SERVICIO

El usuario no deberá intentar darle servicio al equipo más allá de lo que está descrito en el instructivo de operación. Todo lo demás, deberá ser referido a servicio por personal calificado.

16. CARRETILLAS Y SOPORTES

El equipo podrá ser usado con carretillas y soportes que tengan la fortaleza y estabilidad suficiente para el uso previsto.

La combinación equipo/carretilla deberá ser movida con cuidado. Rápidas paradas y arranques, excesiva fuerza y superficies imparejas, pueden causar el volcamiento del conjunto de carretilla/ equipo.

– 20 –

ATTENTION: INFORMATIONS IMPORTANTES DE SÉCURITÉ

La lumière clignotante du symbole de la flêche à l'intérieur d'un triangle équilatéral, à pour objet d'alerter l'utilisateur de la présence “d'un

voltage dangereux” non-isolé à l'intérieur du produit, qui pourrait être de magnitude suffisante au risque d'éléctrocution.

RANÇAIS

ATTENTION

RISQUE DE CHOC

ÉLECTRIQUE NE PAS OUVRIR

AVERTISSEMENT:

Afin de prévenir les risques de feu ou de choc, ne pas

exposer cet appareil à la pluie ou à l'humidité.

1. LIRE LES INSTRUCTIONS

Le mode d'emploi et les mesures de sécurité de votre équipement Hafler devraient être consultés avant sa mise en marche.

2. CONSERVER LE GUIDE DE L'UTILISATEUR

Le mode e'emploi et les mesures de sécurité devraient être conservés pour des références futures.

3. CONSIDÉRATIONS DE MISE EN GARDE

Le mode d'emploi et les mises en garde concernant cet équipement sont de grande importance et devraient être suivis.

4. SUIVRE LE MODE E'EMPLOI

Le mode d'emploi et les conseils d'utilisation sont importants et devraient être suivis.

5. CHALEUR

Le matériel devrait être préservé loin de toute source de chaleur: radiateurs, cuisinière/fours, cheminées,…etc.

6. VENTILATION

Le matériel devrait être utilisé dans un endroit à bonne ventilation. Il reste nécessaire de respecter la circulation de flux d'air à l'intérier et autour du meuble.

7. EAU ET HUMIDITÉ

Le matériel ne devrait pas être utilisé près d'une source d'eau, telle qu'une baignoire, un évier, ou une aire de baignade. De plus, le matériel ne devrait pas être utilisé dans des lieux sujets aux innondations, tels que les sous-sols.

8. SOURCES D'ÉNERGIE

Le matériel devrait seulement être relié à une source d'énergie de même voltage et fréquence que celle indiquée sur le tableau arrière, au dessus de la fiche d'entrée de la prise de courant.

9. PROTECTION DE LA PRISE DE COURANT

La prise de courant devrait être arrangée de façon à ne pas interférer avec le déplacement d'objets (chariots, pales de ventillateurs…etc.) ou de personnes à l'intérieur de la pièce. D'autre part, il faudrait faire tres attention à ce que la prise ne soit pas percée ou coupée, ou disposée de façon à risquer de l'être, comme sous un tapis, autour d'un angle pointu…etc.

10. PRISE DE COURANT ÀTROIS FICHES

La prise de courant est composée de trois fiches, désignées à réduire le risque de décharge électrique de l'appareil.

Le point d'exclamation, à l'intériur d'un triangle équilatéral, à pour objet de prévenir l'utilisateur de l'importance des instructions de fonctionement et de maintenance, jointes à l'appareil.

11. PÉRIODES DE NON-UTILISATON

Durant les périodes de non-utilisation, la prise de courant ne devrait pas être branchée à une source d'energie.

12. NETTOYAGE

Le matériel devrait être nettoyé en respectant les instructions indiquées.

13. PENETRATION DES LIQUIDES

Un attention particulière est éxigée quant à la dispersion de liquides tels que les produits de nettoyage et boissons, de façcon à éviter toute pénetration dans l'enceinte du matériel.

14. DÉGÂT NÉCESSITANT UNE RÉVISION

Le matériel Hafler devrait être révisé par des personnes qualifées de service après-vente, lorsque:

A. Les fiches ou la prise de courant ont été endommagé, ou:

B. De objets sont tombés sur le matériel, ou des liquides s'y sont

dispersés, ou:

C. Le matériel a été exposé à la pluie, ou:

D. Le matériel ne semble pas fonctioner correctement, ou

affiche un changement de performance, ou:

E. Le matériel a été renversé à terre, ou l'enceinte a été

endommagée.

15. REVISION

L'utilisateur ne devrait pas essayer de réviser le matériel en allant plus loin que ce qui a été décrit dans le mode d'emploi. Toute autre réviion devrait être confiée à un personnel qualifié.

16. CHARRIOTS ET MEUBLES

Le matériel devriat être utilisé avec des charriots et meubles de qualité et stabilité suffisante à son utilisation préconçue.

L'ensemble du matériel et du charriot devrait être déplacé avec précaution. Des mises en marche et arrêts brusques, des colli- sions excessives ainsi que des surfaces inégales peuvent renverser l'ensemble du matériel et du charriot.

Elle devrait être de longueur suffisante pour la plupart des utilisations de ce matériel. L'utilisation de rallonge t d'adaptateur est déconsellée à moins dêtre en mesure de fournir la charge électrique requise à un fonctionement sans risque, de tout matériel relié.

– 21 –

ACHTUNG – WICHTIGE SICHERHEITS – INFORMATIONEN

Der Blitz mit dem Pfeil, in einem gleihschenkligen Dreieck, soll den

EUTSCH

ACHTUNG

GEFAHR EINES

ELEKTRISCHEN SCHLAGS

NICHT ÖFFNEN

Um die gefahr eines elektroschocks oder feuer zu

vermeiden, setzen sie das gerät keinem regen oder

WARNUNG:

extremer feuchtigkeitaus.

benutzer vor unisolierter “gefährlicher Spannung” innerhalb des Gerätes warnen.

Das Ausrufezeichen, in einem gleichschenkligen Dreieck, soll den Benutzer darauf aufmerksam machen, daβ dem Gerät wichtige Operaions - und Service - Informationen beigefügt sind.

1. INSTSRUKTIONEN LESEN

Alle Sicherheits- und Operationshinweise Ihres Hafler Equipments sollten vor der Inbetriebnahme gelesen werden.

2. BETRIEBSANLEITUNG AUFBEWAHREN

Bewahren Sie die Bedienungsanleitung sorgfältig auf, damit Sie in dieser auch in Zukunft nachschlagen können.

3. WARNUNGEN BEACHTEN

Alle Warnungen des Gerätes und der Bedienungsanleitung sind extrem wichtig und müssen befolgt werden.

4. INSTRUKTIONEN BEACHTEN

Alle Operations- und Gebrauchshinweise sind extrem wichtig and müssen beachtet werden.

5. HITZE

Das Equipment sollte fern von Hitze ausstrahlenden Geräten aufgestellt werden, wie z.B. Heizungen, Öfen etc.

6. VENTILATION

Das Equipment sollte so aufgestellt werden, daβ eine ausreichende Ventialition gewährt wird.

7. WASSER UND FEUCHTIGKEIT

Das Equipment sollte nicht im oder in der Nähe von Wasser benutzt werden, wie z.B. in Schwimmbädem, Saunen etc. Es sollte ebenfalls nicht in Überschwämmungsgefährdeten Gebieten aufgestellt werden, wie z.B. Kellerräumen.

8. STROMANSCHLUβ

Das Equipment darf nur an eine Stromversorgung angeschlossen werden, die die gleichen Parameter aufweist, welche auf der Rückseite, über em Anschluβterminal des Gerätes, aufgelistet sind.

9. SCHUTZ DER ZULEITUNG

Die Zuletungen sollten so verlegt werden, daβ diese nicht in den Bewegungsbereich anderer Möbelstücke oder Personen hereinragen. Achten Sie darauf, das das Kabel nicht gequestscht oder durchschnittren wird, wie z.B. unter Schränken oder an scharfen Kanten etc.

10. MASSEANSCHLUβ

Das dreiadrige Anschlubkabel ist mit einem Erdungsleiter ausgestattet, welcher die Risiken eines Elektroschocks verringert. Das Kabel hat eine Länge, welche für die meisten Anwendungen völlig ausreicht. Wenn Sie Verlängerungskabel benutzen, achten Sie darauf, das dies die erforderlichen Ströme ¨bertragen können. Benutzen Sie immer dreiadrige Verlängerungskable.

11. ZEITRÄUME IN DENE DAS GER¨AT NICHT GENUTZT WIRD

Wird das Gerät über einen längeren Zeitraum nicht genutzt (z.B. Urlaub), ziehen Sie bitten den Netzstecker aus der Steckdose.

12. REINIGEN

Reinigen Sie das Gerät nur, wie in der Bedienungsanleitung detailliert beschrieben.

13. EINDRINGEN VON FREMDKÖRPERN

Achten Sie darauf, daβ weder Fremdkörper, noch Flüssigkeiten in das Gerät eindringen.

14. ERFORDERLICHER REPARATURSERVICE

Hafler Equipment sollte nur von qualifizierten Service-Technikern instand gesetzt werden, wenn:

A. Das Stromversorgungskabel beschädigt wurde

B. Eine Flüssigkeit in das Gerät eingedrimgem ist

C. Das Gerät Regen ausgesetzt wurde

D. Das Gerät nicht mehr ordnungsgemäβ funktioniert, ggf. nicht

mehr die volle Leistung abgibt

E. Das Gerät runtergefallen ist oder das Gehäuse beschädigt

wurde

15. SERVICE

Der Benutzer sollte nur den Service ausführen, der in der Bedienungsanleitung für den Benutzer freigegeben wird. Den weiterführenden Service sollte nur von qualifizierten Tevhnikern durchgeführt werden.

16. AUFSTELLUNG

Das Equipment sollte so aufgestellt werden, daβ der gewählte Untergrund die erforderliche Stabilität aufweist, so daβ eine gefahrlose Bnutzong gewährleistet wird.

Das Equipment und der Untergrund sollte mit äuberster Vorsicht bewegt werden. Bei schnellen Bewegungen oder starkem Abbremsen, kann es zum Umkippen des Equipments kommen.

– 22 –

NOTARE – IMPORTANTI INFORMAZIONI SULLA SICUREZZA

Il simbolo del fulmine in un triangolo equilatero vuole avvertire della

ATTENZIONE

RISCHIO DI SCARICHE

ELETTRICHE NON APRIRE

TALIANO

Per prevenire incendio scariche elettriche, non esporre

questo apparato a pioggia o umiditá.

ATTENZIONE:

presenza di tensioni elevate non isolate e di valore sufficiente per costituire rischio di shock elettrico alle persone.

Il punto esclamativo contentuto in un triangolo equilatero vuole avvertire l'utente della presenza di parti di servizio e di manutenzione che sono dettagliate nel manuale di istruzioni.

1. LEGGETE LE ISTRUZIONI

Tutte le istruzioni riguardanti la sicurezza ed il funzionamento devono essere lette prima di applicare tensione all'apparato.

2. CONSERVATE IL MANUALE

Queste istruzioni riguardanti la sicurezza ed il funzionamento devono essere conservate come riferimento futuro.

3. AVVERTENZE

Tutte le avvertenze poste sull'apparato e sul libretto di istruzioni sono importanti e devono essere seguite.

4. SEGUIRE LE ISTRUZIONI

Tuttle le istruzioni operative e di funzionamento devono essere seguite.

5. TEMPERATURA

L'apparato deve essere mantenuto lontano da tuttle le zone ad alta temperature, termosifoni, termoconvettori, stufe e forni, caminetti ed altro.

6. VENTILAZIONE

L'apparato deve essere posizionato in aree convenienti per una corretta ventilazione. Prestare attenzione che sia consentita circolazione d'aria attorno e dentro il cabinet.

7. ACQUA E POLVERE

L'apparato deve essere posizionato lontano da zone contenenti acqua, come vasche a bagno, acquari e piscine. Inoltre non deve essere impiegato in aree soggette ad allagamento, come le cantine.

8. REQUISITI DI ALIMENTAZIONE

L'apparato deve essere connesso solo ad un'alimentazione della stessa tensione e frequenza di quanto scritto sulla parte posteriore del telaio.

9. PROTEZIONE DEL CAVO DI ALIMENTAZIONE

Il cavo di alimentazione deve essere posizionato in modo di non interferire con il movimento di oggetti nella stanza: persone, ventilatori, carrelli, ecc…prestate attenzione anche che il cavo non sia tagliato o spellato e che non possa tagliarsi e spellarsi.

11. PERIODI DI NON UTILIZZO

Durante lunghi periodi di non utilizzo, staccare il cavo di alimentazione.

12. PULIZIA

L'apparato deve essere pulito solo come indicato dalle istruzioni.

13. INGRESSO DI OGGETTI E LIQUIDI

Si deve prestar attenzione che oggetti e liquidi, come fluidi detergenti e bibite, non vengano versati all'interno dell'apparato.

14. RIPARAZIONI

Gli apparati Hafler devono essere riparati da personale qualificato quando:

A. Il cavo di alimentazione o la spina sono danneggiati

B. Oggetti sono caduti all'interno del telaio o quando del

liquido è entrato

C. Quando l'apparato è stato esposto a pioggia

D. Quando l'apparato non sempra funzionare normalmente o

quando esibisce un cambiamento di prestazioni o

E. Quando è caduto o il telaio è stato danneggiato

15. ASSISTENZA

L'utente non deve tentare di prestare assistenza all'apparato, se non per quanto esposto nelle istruzioni. tutti gli altri interventi devono essere effettuati da un tecnico specializzato.

16. CARRELLI E STAND

L'apparato deve essere impiegato su carrelli o stand solo se questi sono sufficientemente solidi e stabili per la funzione a cui si vuole dedicarli.

La combinazione di carrello ed apparato deve essere mossa con cautela. Fermate e partenze improvvise, forze eccessiva e superfici irregolari, possono ribaltare la cominzione carrello e apparato.

10. MESSA A TERRA

Il cavo di alimentazione è del tipo a tre fili con terra ed è progettato pr ridurre il rischio di shock elettrici. Si presume che sia della lunghezza sufficiente per la maggior parte degli impieghi. L'impiego di prolunghe e adattatori è sconsigliato se questi non garantiscono la potenza sufficiente per i corretto fuinzionamento degli apparati connessi. E altersì importante che vengano sempre impiegate prolunghe con la configurazaione a tre fili con terra.

– 23 –

HAFLER PROFESSIONAL

A DIVISION OF

ROCKFORD CORPORATION

546 SOUTH ROCKFORD DRIVE

TEMPE, ARIZONA 85281 U.S.A.

IN U.S.A. (602) 967-3565

IN CANADA, (604) 942-1001

IN EUROPE, FAX 8503-9340-14

IN JAPAN, FAX (81) 559-79-01265

MAN-1498-B 6/97

Hafler trans-nova P4000 Installation And Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual