Unika NA-3600, NA-5600, NA-8600 User Instructions

User Instructions

This booklet contains important information concerning the proper and safe operation of your new amplifier..

NA-Series

NA-3600 / NA-5600 / NA-8600

Made in Taiwan

Profe ssion al Power Amp lif iers

Index

02 Important Precautions

Introduction02

03 Front Panel

04 Rear Panel

06 Set Up

08 Operating Modes

12 Protection

13 Features

14 Specifications

UNiKA

STEREO

BRIDGE

PARALLEL

SIGNAL SIGNAL

CLIP CLIP

0 10 0 10

POWER

OFF ON

MP-600

PROFESSIONAL AMPLIFIER

STEREO

BRIDGE

PARALLEL

SIGNAL SIGNAL

CLIP CLIP

0 10 0 10

LIMITER LIMITER

POWER

OFF ON

MP-1100

PROFESSIONAL AMPLIFIER

STEREO

BRIDGE

PARALLEL

SIGNAL SIGNAL

CLIP CLIP

0 10 0 10

LIMITER LIMITER

POWER

OFF ON

MP-1600

PROFESSIONAL AMPLIFIER

CHANNEL 1 CHANNEL 2

CHANNEL 1 CHANNEL 2

CHANNEL 1 CHANNEL 2

ClipSig Clip

Prot

Limiter

Prot

Sig

on on

0

10

Channel 2

0

10

Channel 1

POWER

Limiter

-20 -10

-5 -5

-10 -20

PROFESSIONAL STEREO AMPLIFIER

TPS1100

UNiKA

NA-3600

ClipSig Clip

Prot

Limiter

Prot

Sig

on on

0

10

Channel 2

0

10

Channel 1

POWER

Limiter

-20 -10

-5 -5

-10 -20

PROFESSIONAL STEREO AMPLIFIER

TPS1100

UNiKA

NA-5600

ClipSig Clip

Prot

Limiter

Prot

Sig

on on

0

10

Channel 2

0

10

Channel 1

POWER

Limiter

-20 -10

-5 -5

-10 -20

PROFESSIONAL STEREO AMPLIFIER

TPS1100

UNiKA

NA-8600

UNiKA NA-3600/NA-5600/NA-8600

pag e 1

This symbol is intended to alert the user to the presence of
non insulated "dangerous voltage" within the product's
enclosure that may be of sufficient magnitude to constitute

a risk of electric shock to persons.

!

CAUTION: Risk of the electrical shock - DO NOT OPEN!

CAUTION: To reduce the risk of electrical shock, do not remove cover. No user serviceable parts inside. Refer all servicing

to qualified service personnel.

WARNING: To prevent electrical shock or fire hazard, do not expose this amplifier to rain or moisture. Before using this

amplifier read the user manual for further warnings.

This symbol is intended to alert the user of
the presence of important operating and
maintenance (servicing) instructions in the

literature accompanying the product.

Este símbolo tiene el propósito de alertar al usuario de la
presencia de “voltaje peligroso” que no tiene aislamiento
dentro de la caja del producto que puede tener una

magnitud sufciente como para constituir riesgo de corrientazo.

!

PRECAUCIÓN: Riesgo del choque eléctrico - NO SE ABRA
PRECAUCIÓN: Para disminuir el riesgo de choque eléctrico, no quite la cubierta. No hay piezas adentro que el usario puede

reparar. Deje todo mantenimiento al los técnicos cualifcados.

ADVERTENCIA: Para prevenir choque eléctrico o riesgo de incendios, no deja expuesto a la lluvia o a la humedad este amplif

cador. Antes de usar este amplif cador, lea mas advertencias en la guia de operacion.

Este símbolo tiene el propósito de alertar al
usuario de la presencia de instrucciones
importantes sobre la operación y

mantenimiento en la literatura que vienc con el producto.

Ce symbole est utilisé pur indiquer à l’utilisateur la présence
à l'intérieur de ce produit de tension non-isolée
dangereuse pouvant être d'intensité suffisante pour

constituer un risque de choc électrique.

!

ATTENTION: Risque de choc électrique - NE PAS OUVRIR!
ATTENTION: Afin de réduire le risque de choc électrique, ne pas enlever le couvercle. Il ne se trouve à l’intérieur aucune piéce

pouvant être réparée par l'utilisateur. Confier l'entretien à un personnel qualifé.

AVERTISSEMENT: Afin de prévenir les risque de décharge ou de feu, n’exposez pas cet appareil à la pluie ou à l’humidité.

Avant d’utiliser cet amplificateur, lisez les avertissements supplémentaries situés dans le guide.

Ce symbole est utilisé pour indiquer à l’utilisateur
qu'il trouvera d'importantes instructions
importantes sur l'utilisation et l'entretien de

l'appareil dans la littérature accompagnant le produit.

Dieses Symobl soll den Anwender vor unisollierten
gefährlichen Spannungen innerhalb des Gehäuses warnen,
die von Ausreichender Stärke sind, um einen elektrischen

Schlag verursachen zu können.

!

VORSICHT: Risiko - Elektrischer Schlag! Nicht öffnen!
VORSICHT: Um ddas Risiko eines elektrischen Schlages zu vermeiden, nicht die Abdeckung enfernen. Es befinden sich keine

Teile darin, die vom Anwender repariert werden könnten. Reparaturen nur von qualifzierte Fachpersonal
durchführen lassen.

ACHTUNG: Um einen elektrischen Schlag oder Feuergefahr zu vermeiden, sollte diesen Gerät nicht dem Regen oder

Feuchtigkeit ausgesetz werden. Vor Inbetriebnahme unbedingt die Bedienungsanleitung lesen.

Dieses Symobl soll den Benutzer auf wichtige
Instruktionen in der Bedienungsanleitung
aufmerksam machen, die Handhabung und

Wartung des Produkts betreffen.

CAUTION

Do not open -

risk of electric shock

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO

NOT REMOVE THE COVER. THERE ARE NO USER

SERVICEABLE PARTS INSIDE. REFER ALL SERVICE TO

YOUR AUTHORIZED DEALER.

The l ightn ing fla sh with a n arrow t riang ular
sym bol is in tende d to aler t the use r to the
pre sence o f non ins ulate d “dang erous
vol tage” w ithin t he prod ucts en closu re, and
may b e of suff ici ent magni tud e to co nsti tut e
a ris k of elec tric sh ock.

The e xclam ation p oint tr iangu lar sym bol is
int ended t o alert t he user t o the pre sence o f
imp ortan t opera ting an d maint enanc e
(se rvici ng) ins truct ions in t he user m anual
acc ompan ying th e ampli fier.

!

!

FOR O PTIMU M PERFO RMANC E AND R ELIAB ILITY

DO NO T PRESE NT THE AMPL IFIER W ITH A

SPE AKER LO AD OF LES S THAN 2 OH MS OR ANY

COM BINATI ON OF SPE AKER S THAT TO GETHE R ARE L ESS

THA N 2 OHMS!

USI NG ONE SP EAKER , IT MUST BE R ATED AT 4 OR MORE

OHM S. USIN G TWO SPE AKER S, THEY MU ST RATED E ACH AT 4

OR MO RE OHMS .

USI NG THRE E SPEAK ERS, THE Y MUST BE R ATED E ACH AT 8

OR MO RE OHMS .

POU R ASS URER LA FI ABILE TE ET OBTE NIT UNE

PER FORMA NCE OPT IMALE , NESOU METTE

JAM AIS L’AM PLIFI CATEUR A UNE C HARGE

D’I MPEDA NCE

TOTAL E INFER IEURE A 2 OHM S, NI AVEC UN H .P. N EN

COM BINAI SON DES H .P.

AVEC U N H.P., IL FAUT UN E CHARG E D’IMP EDANC E MINIM UM

DE 2 OH MS.

AVEC D EUX H.P., FAU T POUR CH AOUN UN E CHARG E

D’I MPEDA NCE MIN IMUM DE 4 O HMS.

AVEC TR OIS H.P., FA UT POUR C HAOUN U NE CHUR GE

D’I MPEDA NCE MIN IMUM DE 8 O HMS.

!

!

pag e 2

IMPORTANT PRECAUTIONS

 To reduc e the r isk o f electric al sh ock or fire, d o not e xpo se this unit r ain o r

moist ure .

 Do not s pil l wat er or other li qui ds into or on to y our u nit .

 Do not a tte mpt t o operate th is un it if the powe r cor d has b een frayed o r

broke n.

 Do not a tte mpt t o remove or br eak o ff th e gro und prong fr om th e electric al

cord. This p ron g is us ed to reduce t he ri sk of e lectr ica l sho ck and f re in
case of a n int ern al shor t.

 Disc onn ect m ain power be for e making any t ype o f con necti on.

 Do not r emo ve th e cover unde r any c ondition s. There a re no u ser

servi cea ble p arts in sid e.

 Neve r plu g thi s unit in to a dim mer p ack.

 Alwa ys be s ure t o mount this u nit i n an area that w ill a llo w prope r

venti lat ion . Allow ab out 6 ” (15 cm) betwee n thi s dev ice and a w all .

 Do not a tte mpt t o operate th is un it, if it beco mes d ama ged.

 This u nit i s int ended for in doo r use only, use of this pro duc t outdoors v oid s

all war ran tie s.

 Duri ng lo ng pe riods of non -us e, disconn ect t he un it’s main power.

 Alwa ys mo unt t his unit in a sa fe an d stable man ner.

 Powe r cor ds sh ould be rout ed so t hey are not li kel y to be w alked o n,

pinch ed by i tem s place d upo n or ag ainst them .

 Clea nin g -Th e outside of t he un it should be w ipe d own w ith a sof t clo th an d

mild cl ean er wh en need ed.

 Heat - The a mpl ifier shou ld be s ituated aw ay fr om he at sources s uch a s

radia tor s, he at regi ste rs, s toves, or ot her a ppl iance s (in clu ding ampli fie rs)
that pr odu ce he at.

 The fi xtu re sh ould be serv ice d by qualifi ed se rvi ce pers onn el wh en:

A. Th e power -su ppl y cord or the pl ug ha s bee n damag ed.

B. Obje cts h ave f allen , or li qui d has been spi lle d int o the uni t.

C. Th e appli anc e has b een expose d to ra in or w ater.

D. Th e fixtu re do es no t appear to op era te no rmall y or ex hib its a

marke d cha nge i n perfo rma nce .

Congr atu lat ions an d tha nk yo u for purcha sin g NA- 3600/ NA- 560 0/NA-860 0

ampli fie r. The se am plifiers a re re pre senta tio n of UN iKA’s con tin uing

commi tme nt to p roduc e the b est a nd highest q ual ity a udio pr odu cts a t an

aff ordab le pr ice . The se am plifi ers a re de signed to pr ovi de a bi g impac t in

sound r epr odu ction . Ple ase r ead and unde rst and t his man ual c omp letely

befor e att emp ting to o per ate y our new ampl ifi er. Th is bo oklet cont ain s

impor tan t inf ormat ion c onc erning the p rop er an d safe op era tio n of your new

ampli fie r.

UNPACKIN G: E ver y NA-3600/ NA- 560 0/NA- 860 0 amp lifier has b een

thoro ugh ly te sted an d has b een s hipped in pe rfe ct op erati ng co ndi tion.

Caref ull y che ck the sh ipp ing c arton for da mag e tha t may hav e occ urr ed

durin g shi ppi ng. If th e car ton a ppears to be d ama ged , caref ull y ins pect your

unit fo r any d ama ge and be s ure a ll ac cessorie s nec ess ary to op era te th e

syste m hav e arr ived in tac t. In t he event dam age h as be en foun d or pa rts a re

missi ng, p lea se cont act y our d ealer for fu rth er in struc tio ns.

INSTALLATION: Th ese a mplifier s are d esi gned to m oun t int o a

stand ard 1 9”r ack. The front pa nel p rov ides fo ur ho les u sed to screw t he un it

into a ra ck. T he un it al so provide s a way t o rea r mount t he un it in to a rack for

added s ecu rit y. Rea r mounting t he un it is e speci all y rec ommended i f the

unit is t o mou nte d into a mo bil e rac k.

INTRODUCTION

UNiKA NA-3600/NA-5600/NA-8600

Important Precautions Introduction Front Panel Rear Panels Set Up Operating Modes Protection Features Specifications

ClipSig Clip

Prot

Limi ter

Prot

Sig

on on

0

10

Chan nel 2

0

10

Chan nel 1

POWER

Limi ter

-20 - 10

-5 -5

-10 - 20

PROFESSIONAL STEREO AMPLIFIER

TPS 1100

UNiKA

NA -860 0

NA-3600/NA-5600/NA-8600 FRONT PANEL

1. Rack Mounting Ears - Two front panel mounting holes are provided on each

mounting ear.

2. Fan Inlet Grills and Filter - NA Series amplifiers are cooled by two rear-

mounted fans. Cool air from front grills is filtered and flows over the heatsinks
and exhausts to back side. Make sure these outlets remain clear to allow
unrestricted air flow.

3. UNiKA Logo and Model No - NA series have 3 types of 2U models NA-3600

/ NA-5600 / NA-8600.

4. Signal Indicators - These green and yellow LED’s will glow according to the

average signal output.

5. Clip LED - Illuminates at the clipping threshold. Continuous illumination also

indicates that ACL (Active Clip Limiting) protection circuitry is engaged.

6. Protect Indicator - The red Protect LED will begin to glow when the channel

goes into protect mode. When the channel goes into protect mode all output
for that channel will turn off. This is to protect any speakers connected to the
channel.

7. Power Indicator - This blue LED will glow when mains power is applied to

the unit. This light may continue to glow briefly after mains power has been
turned off, this is normal.

8. Input Attenuators - Two input attenuators adjust level for their respective

amplifier channels.

9. Limiter Switch - You can select limiter "ON" for limiter working, or turn “OFF”

the limiter.

10. AC Power Switch - MP Series amplifiers have a front-panel AC mains

power switch.

pag e 3

Figure 1

1 2 3

4

5 6

7

98

Important Precautions Introduction Rear Panels Set Up Operating Modes Protection Features Specifications Front Panel

UNiKA NA-3600/NA-5600/NA-8600

3

910 8

11. Fan Outlet Ports - Cooling air enters the amplifier through the front grills

and exhausts through the fans. Be sure not to block these ports when
installing the amplifier or other associated equipment. Air must flow
unimpeded through these ports.

12. Channel 2 Frequency Adj. (NA-8600 only) - This pot adjust the frequency

level sent to your speaker on channel 2 when using your amplifier in
subwoofer mode.

13. Channel 2 Subwoofer Mode On/Off Switch (NA-8600 only)- Turns the

subwoofer mode for channel two on and off.

14. Channel 2 Balanced 1/4" TRS & XLR Input Connectors - These

connectors accept input signals on balanced TRS and XLR input plugs. See
the figure 3 for information on polarity. Connectors for each channel are in
parallel; the unused connectors may be used for "loop through" connection
to other amplifiers.
XLR pin setting: Pin-3/signal Negative, Pin-2/signal Positive, Pin-1/Ground.

15. Low Cut Filter Mode Switches (NA-5600 & NA-8600 only) - These DIP

switches are used to activate and adjust the built-in Low Cut Filter, see ”Low
Cut Filter” on Page 13.

16. Channel 1 Balanced 1/4" TRS & XLR Input Connectors - These

connectors accept input signals on balanced TRS and XLR input plugs. See
the figure 3 for information on polarity. Connectors for each channel are in
parallel; the unused connectors may be used for "loop through" connection
to other amplifiers.
XLR pin setting: Pin-3/signal Negative, Pin-2/signal Positive, Pin-1/Ground.

17. Channel 1 Subwoofer Mode On/Off Switch (NA-8600 only)- Turns the

subwoofer mode for channel one on and off.

NA-3600 REAR PANEL

NOTE : Unbalanced "Tip / Sleeve" plugs
may be used with the balanced TRS " Tip /
Ring / Sleeve " connectors. The "ring"
terminal or negative input will be connected
to ground internally. When using three-pole
(stereo) TRS connectors, make sure that
the ring connection is made either to the
cold (-) output of the source equipment, or
to ground. Incorrect connections may
cause a 6dB loss in level.

Figure 3

pag e 4

Figure 2: NA-3600 Rear Panel

11 14 16

19 20

11

23 24 25 26

C A U T I O N

WARNING: TO REDUCE THE RISK OF FIRE

OR ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

AC IN

F 12A

-120V 60Hz

Important Precautions Introduction Front Panel Set Up Operating Modes Protection Features Specifications Rear Panels

UNiKA NA-3600/NA-5600/NA-8600

PARALLEL

STEREO

BRIDGE

NA-8600 REAR PANEL

pag e 5

18. Channel 1 Frequency Adj. (NA-8600 only) - This pot adjust the frequency

level sent to your speaker on channel 1 when using your amplifier in
subwoofer mode.

19. Mode Selection Switch - This recessed, three-position switch configures

the amplifier for Stereo, Parallel or Bridged Mode operation. Amplifiers are
factory-configured for Stereo Mode. See section on Mode Selection for more
information.

20. Fuse Holder - This holder houses the external fuse. Always replace with the

exact same type fuse, otherwise instructed to do so by an authorized audio
service technician.

21. Channel 2 XLR THRU Jack (NA-5600 & NA-8600 only) - This Jack is used

to send a parallel signal from the channel 2 input jack to another device or
amplifier.

22. Channel 1 XLR THRU Jack (NA-5600 & NA-8600 only) - This Jack is used

to send a parallel signal from the channel 1 input jack to another device or
amplifier.

23. Channel 2 Output Jack / 5-Way Binding Post - Connect to your speaker’s

input jack. Red is positive signal and Black is negative signal.

24. Channel 1 Output Jack / 5-Way Binding Post - Connect to your speaker’s

input jack. Red is positive signal and Black is negative signal.

25. Ground Lift Switch - This switch is used to disconnect the internal ground

signal from the amplifier chassis ground. This may reduce the buzz that is
caused from an electrical 50Hz/60Hz cycle.

26. AC POWER Cord - Plug this cable into a standard 110V or 220V wall outlet.

Be sure that the supplied voltage in your area matches the amplifiers
required voltage. Never plug your amplifier into a wall outlet that does not
match the required voltage of your amplifier, serious damage may occur to
your unit.

Figure 4: NA-8600 Rear Panel

Important Precautions Introduction Front Panel Set Up Operating Modes Protection Features Specifications Rear Panels

11

14

181619

21

20

11

15

12

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

AC IN

-120V 60Hz

FREQUENCY

CH-2 CH-1

PARALLEL

DIPON

1 2 3 4

20Hz 200Hz

FREQUENCY

200Hz20Hz

NORMALNORMAL

CH-1

CH-2

22 23 24 25 26

13

17

UNiKA NA-3600/NA-5600/NA-8600

SUB

WOOFER

SUB

WOOFER

INPUTS - The NA-36 00 / NA-5 600 / N A-860 0 amp lifie r allows you t o use two t ype s of inpu t con necto rs per chann el, a XLR f ema le jack f or

balan ced connec tions a nd a 1/ 4” TR S femal e jack that wi ll acce pt ba lance d and u nbala nced conne ctors . Use t hese co nne ction s to connect t he
outpu t signal fro m a mixer, c ros s-ove r or EQ t o Your NA seri es ampl ifi ers. A balan ced con nec tion is r ecommend ed for ca ble r uns lon ger t han
20ft. W hen constr uctin g you r own XLR c abl es foll ow the pin con figur ati on desc rib ed belo w for proper c onnec tio ns. For c abl e runs sh orter than
20ft. , you may choo se the 1/ 4” TS u nba lance d input opti on. The 1/4” TS unb ala nced in put option m ay be mor e con venie nt fo r most us ers d ue to
the abu ndant supp ly of pre fab ricat ed ca bles av ailable at y our loc al au dio dea ler. You may us e the two XLR “I nput Thru” j ack s to jump a p ara llel
conne ction to ano ther am pli fier or o the r devic e. For Examp le: Con nec t a XLR cab le to t he inpu t of channel o ne. You may no w conne ct a XL R

cable f rom the chan nel one “ Inp ut Th ru” jac k to the input j ack of an oth er ampl ifi er ’s channel o ne inpu t. Th is wi ll redu ce th e use of “Y ” cables.

BINDI NG POST/BA NANA PLU G: Conn ect y our spe akers to the b indin g pos t outpu ts on t he rear o f the amplif ier. The spea ker w ire may b e
conne cted by bare w ire (di rec tly con nec ted, us ually for pe rmane nt co nnect ion s), ban ana plug, or s pade co nne ctor. Co nnection s are mad e to
chann el one and cha nnel tw o out puts fo r Ste reo Mod e or across th e red ter min als of ch ann el one an d channel tw o for Mon o Bri dge Mod e.

IMPOR TANT N OTICE: Alth ough a sp eak er will o perate wit h the pos iti ve and ne gat ive lea ds plugged i nto eit her t ermin al on t he ampl ifier bind ing
post, b e sure to plug t he nega tiv e lead in to th e black t erminal an d posit ive l ead int o the r ed term inal. Ensu ring pr ope r polar ity will avo id spea ker s
being o ut of phase th at can ca use a l oss of ba ss re spons e.

Figure 8

2 Hot (+data)

1

3

2

Male XLR Pin Configuration

Figure 5

1 Ground / Return / 0v

3 Negative (-data)

Balanced TRS 1/4” Plug

Hot (+)

Negative (-)

Ground/Shield

Figure 6

Unbalanced TS 1/4” Plug

Hot (+)

Negative (-)

Figure 7

pag e 6

SET UP

Important Precautions Introduction Front Panel Rear Panels Operating Modes Protection Features Specifications Set Up

OUTPUTS -

UNiKA NA-3600/NA-5600/NA-8600

BANAN A PLUG : (Fi gure 8)

When co nnecting y our spe ake rs to the a mpl ifier u sing banan a plug, b e sur e that th e red a nd blac k caps on the bi nding p ost
are com pletely sc rewed i n. In sert th e ban ana plu g into the cap s of the bi ndi ng post , be su re that t he banana pl ug is ins ert ed
secur ely to avoid t he risk o f pop ping ou t.

When connecting your speakers to the amplifier using bare wire, unscrew the red and black caps on the binding
post, be sure not to completely remove or unscrew the red and black caps. Strip back the wire insulation ½”
(13mm). Insert the bare wire into the hole that was revealed by unscrewing the binding post cap. After inserting the
wire into the binding post hole, screw the binding post cap down on the wire. To reduce the risk of shock or
damage to your amplifier, be sure that the wire connected to one binding post does not come in contact with that of
another.

SPADE CONNECTOR : (Figure 10)

When connecting your speakers to the amplifier using spade connector, unscrew the red and black caps on the
binding post, be sure not to completely remove or unscrew the red and black caps. Insert the spade connector into
the binding post and tighten the caps down on the spade connector. To reduce the risk of shock or damage to your
amplifier, be sure that the wire connected to one binding post does not come in contact with that of another.

MONO BRIDGE CONNECTIONS : (Figure 11)

Mono bridge operation connections will follow the above descriptions, however, when operating in mono bridge
operation the speaker connections will run between the two positive (red) leads. Use channel two positive output
terminal for the negative connection and the channel one positive output terminal for the positive connection.

Typical speaker output using bare wire.
Insert bare wire into the binding post and tighten.

Typical speaker output using spade connectors.
Insert bare wire into the binding post and tighten.

Figure 10

pag e 7

1/5"
13mm

Figure 9

BARE WIRE CONNECTION : (Figure 9)

Important Precautions Introduction Front Panel Rear Panels Operating Modes Protection Features Specifications Set Up

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

BRIDGE

Figure 11

UNiKA NA-3600/NA-5600/NA-8600

pag e 8

Figure 13 Typical Stereo Output Connections

SPEAKERS

2 OHM MINIMUM

SPEAKERS

2 OHM MINIMUM

CH-1 Input

CH-2 Input

NA-3600 REAR PANEL

OPERATING MODES

STEREO OPERATION : Page 8/ Figure 13 details an example of a typical stereo set-up. Connect your inputs into channels one and two of the amplifier.

Connect your speakers to the outputs on the rear of the amplifier. Be sure that your front gain controls are turned down to their lowest level (fully counter­clockwise). Turn your amplifier on. Turn your input source level up. Use your front gain controls to regulate the output volume. Be sure not to raise the volume to
the clip level, however an intermittent clip signal is acceptable.

MONO BRIDGE OPERATION : Page 9/ Figure 14 details a mono bridge set-up. Be sure your amplifier and all other audio equipment are powered down.

Flip the Parallel/Stereo/Mono Bridge switch to the Mono Bridge position. Connect input signal to channel one. Connect your speaker across the red output
binding post on the rear of your amplifier. Turn your equipment on (your amplifier should always be the last item you turn on). Apply an input source signal to
your amplifier. Use the channel one gain control to regulate your amplifier output.

PARALLEL MONO : Parallel ties the two channel line inputs together, so that they will both be driven by the same signal, without the need for external

jumpers or wiring. Both amplifier channels will operate independently. Though they carry the same signal, their gain controls affect only their respective
channels, and they both must use their respective speaker outputs. Never attempt to parallel the speaker outputs, this may cause serious damage to your
amplifier! This mode is recommended when using the NA-8600 to run bass speakers, to achieve better low end. To run in parallel mono mode connect your
system as you would if you were going to run in stereo mode. Then flip the mode switch to Parallel. Be sure the amplifier is off or the power is disconnected
before making any changes.

Important Precautions Introduction Front Panel Rear Panels Set Up Protection Features Specifications Operating Modes

UNiKA NA-3600/NA-5600/NA-8600

C A U T I O N

WARNING: TO REDUCE THE RISK OF FIRE

OR ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

AC IN

F 12A

-120V 60Hz

PARALLEL

STEREO

BRIDGE

PARALLEL

STEREO

BRIDGE

pag e 9

NA-8600

Figure 15 Typical Parallel Set-Up

SPEAKERS

2 OHM MINIMUM

SPEAKERS

2 OHM MINIMUM

SPEAKERS

4 OHM MINIMUM

CH-1 Input

Figure 14 Typical Mono Bridge Set-Up

Only

NA-3600 REAR PANEL

Important Precautions Introduction Front Panel Rear Panels Set Up Protection Features Specifications Operating Modes

CH-1 Input

CH-2 Input

Either CH- 1 or CH -2 in put ,
or Both inpu ts.

REAR PANEL

UNiKA NA-3600/NA-5600/NA-8600

PARALLEL

STEREO

BRIDGE

C A U T I O N

WARNING: TO REDUCE THE RISK OF FIRE

OR ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

AC IN

F 12A

-120V 60Hz

PARALLEL

STEREO

BRIDGE

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

AC IN

-120V 60Hz

FREQUENCY

CH-2 CH-1

PARALLEL

DIPON

1 2 3 4

20Hz 200Hz

FREQUENCY

200Hz20Hz

NORMALNORMAL

CH-1

CH-2

PARALLEL

SUB

WOOFER

SUB

WOOFER

SUBWOOFER MODE (NA-8600 only) : This mode sends low frequencies to your speakers without the use of an external cross-over. The subwoofer operation

can be operated in stereo, parallel, or bridge modes. Change the different operating modes by flipping the mode switch on the rear of the unit to your desired operating
mode. Also, set the subwoofer mode switch to the SUBWOOFER position. Use the frequency selector to adjust the subwoofer output frequency from 20Hz to 200Hz. The
different subwoofer modes are listed as follows:

BRIDGE SUBWOOFER - This operation allows you to get the most possible power out of your amplifier for the sole purpose of running a high powered subwoofer
loudspeaker in mono. To avoid amplifier overheating, never run the amplifier below 4 ohms in this mode. In this mode you may use the frequency adjustment on the rear
of the amplifier, to control the frequency output level. Frequencies may be adjusted from 20Hz to 200Hz. Page 10 / Figure 16 details a typical Bridge Subwoofer set-up.

STEREO SUBWOOFER - This operation is similar to the Bridge Subwoofer operation but in stereo. This operation allows you to run several subwoofers down to a
minimum of 2 ohms. To avoid amplifier overheating, never run the amplifier below 2 ohms in this mode. Set up this mode as you would a standard Stereo set-up. Be sure
both channels are set to “SUBWOOFER.” In this mode you may use the frequency adjustment on the rear of the amplifier, to control the bass frequency output level.
Frequencies may be adjusted from 20Hz to 200Hz. Page 11 / Figure 17 details a typical Stereo Subwoofer set-up.

PARALLEL SUBWOOFER - This operation is similar to the Stereo Subwoofer operation but in Parallel. When running subwoofers, it is usually recommended to run
them in mono mode to achieve a cleaner tighter low end. This operation allows you to run several subwoofers down to a minimum of 2 ohms. To avoid amplifier
overheating, never run the amplifier below 2 ohms in this mode. Set up this mode as you would a standard Stereo set-up. Be sure both channels are set to
“SUBWOOFER” and the mode switch is set to “Parallel.” In this mode you may use the frequency adjustment on the rear of the amplifier, to control the bass frequency
output level. Frequencies may be adjusted from 20Hz to 200Hz.

ONE CHANNEL NORMAL / ONE CHANNEL SUBWOOFER (BI-AMP) - You may also use your amplifier to bi-amp your system. You may use one side of the amplifier
to power a subwoofer and the other side to power a full range speaker. Follow the set-up guides listed above to mix and match your operations.

pag e 10

Use the two red terminal from the Binding Post to
power a subwoofer speaker in mono-bridge mode.

Bridge Subwoofer Mode Speaker Set-Up

Figure 16

Do Not Use
CH-2 Input

CH-1 Input

Set to
Subwoofer

Negative (-) Lead

Positive (+) Lead

BRIDGE

PARALLELPARALLEL

NA-8600 REAR PANEL

Important Precautions Introduction Front Panel Rear Panels Set Up Protection Features Specifications Operating Modes

UNiKA NA-3600/NA-5600/NA-8600

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

AC IN

-120V 60Hz

FREQUENCY

CH-2 CH-1

PARALLEL

DIPON

1 2 3 4

20Hz 200Hz

FREQUENCY

200Hz20Hz

NORMALNORMAL

CH-1

CH-2

SUB

WOOFER

SUB

WOOFER

Figure Parallel Subwoofer Mode Speaker Set-Up 18

NA-8600

STEREO

Use either the bare wire
or the banana jacks

Use either the bare wire
or the banana jacks

Set to
Subwoofer

Set to
Subwoofer

PARALLEL

pag e 11

Set to
Subwoofer

Set to
Subwoofer

CH-1 Input

CH-2 Input

Figure Stereo Subwoofer Mode Speaker Set-Up 17

PARALLELPARALLEL

NA-8600 REAR PANEL

STEREO

Use either the bare wire
or the banana jacks

Use either the bare wire
or the banana jacks

Important Precautions Introduction Front Panel Rear Panels Set Up Protection Features Specifications Operating Modes

CH-1
Input

CH-2
Input

Either CH- 1 or CH -2 in put ,
or Both inpu ts.

REAR PANEL

UNiKA NA-3600/NA-5600/NA-8600

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

AC IN

-120V 60Hz

FREQUENCY

CH-2 CH-1

PARALLEL

DIPON

1 2 3 4

20Hz 200Hz

FREQUENCY

200Hz20Hz

NORMALNORMAL

CH-1

CH-2

SUB

WOOFER

SUB

WOOFER

CAUTION

MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE

AC IN

-120V 60Hz

FREQUENCY

CH-2 CH-1

PARALLEL

DIPON

1 2 3 4

20Hz 200Hz

FREQUENCY

200Hz20Hz

NORMALNORMAL

CH-1

CH-2

SUB

WOOFER

SUB

WOOFER

pag e 12

Important Precautions Introduction Front Panel Rear Panels Set Up Operating Modes Features Specifications Protection

PROTECTION

LIMITER - The NA Series comes with a built in limiter. When the input signal overloads, the “CLIP LED” indicates a signal overload, at this time, the volume should

be lowered to reduce distortion. If the input gain level is not reduced the built-in limiter will activate. During signal overload, the limiter will reduce the input audio signal
enough to minimize the amount of clipping. A limiter takes the gain of an overloading signal and reduces it, the reduction in gain reduces distortion that can cause
damage to your speakers and amplifier. During normal operation below clipping, and momentary clips on peaks, the limiter does not affect the audio signal and is
inaudible. It will allow brief clipping of peaks and will only activate when continuous hard clipping occurs. During excessive clipping the limiter will reduce the audio
signal enough to minimize the amount of clipping. When the input signal decreases enough that clipping ends, the limiter will deactivate and cease its gain reduction.
The limiter has a fixed threshold and can not be adjusted.

SAFE POWER LEVELS AT DIFFERENT OUTPUT LOADS:

8-Ohm L oads : The amp lifie r can o perat e at it s rated p ower level w ithou t ris k of over hea ting. H owever, it ma y cause d exc essiv e tem perat ure if it is

pushe d hard enoug h to cont inu ally li ght the “CLI P ” ind icato r, the a mplif ier ’s a verage out put pow er ca n reach i ts ma ximum p eak.

4-Ohm L oads : If the “C LIP ” indica tor f lashe s occ asion ally, the amp lif ier is ap pro achin g its Maximu m long- ter m power c apa city. If it is li t about half t he
time, t he amplifi er chan nel w ill pro bab ly go int o thermal pr otect ion w ithin a f ew mi nutes .

2-Ohm L oads : Excep t for an oc cas ional f las h, keep t he “CLIP ” indica tor dar k to av oid ove rhe ating t he amplifi er chan nel . Clipp ing s hould b e kept to a
reaso nable mini mum. An am pli fier’s peak cu rrent draw a t full ou tpu t power i nto 2 o hms is se veral time s what th e “no rmal ” dr aw is , but its v arious
prote ction circ uits wi ll pr event t his c ondit ion lastin g more th an a mi nute or t wo.

SHORT CIRCUIT PROTECTION - The NA Series comes with built-in Output Short Circuit Protects. The Output Short Circuit

Protection protects the output devices of the amplifier from short circuits and stressful loads. If your speaker lines shorted, the
amplifier automatically detects this problem and discontinued operation for that channel. If one side of your amplifier becomes
shorted and goes into protect mode, the other side will continue to operate normally. During short circuit protection, the "CLIP"
LED and “PROTECT” LED will light simultaneously indicating amplifier fault. Channel output during the “Short Circuit Protection"
will be interrupted (i.e. no sound output). Short Circuit Protection can usually be traced back to the signal output line (i.e. speaker
line). Check the line from the output terminal of the amplifier to the speaker. If this line is good, check the internal speaker
connections and components. A short circuit will usually be traced to a bad cable or a bad speaker component and is rarely traced
to the amplifier itself.

THERMAL PROTECTION - Dual variable speed fans on the NA Series amplifiers provide adequate cooling. During low level output the fans run at normal

speeds. During high output and as heat raises, (exceeding 50°C.), the fans will run at higher speeds to aid the cooling process. If the heatsink temperature exceeds
91°C., the amplifier will mute until the amplifier cools down. When the amplifier cools below 90°C., the amplifier will return to normal operations. Be sure not to operate
your amplifier below the minimum load ratings to reduce the risk of overheating problems.

UNiKA NA-3600/NA-5600/NA-8600

Important Precautions Introduction Front Panel Rear Panels Set Up Operating Modes Specifications Protection Features

pag e 13

INPUT/OUTPUT PROTECTION - The input circuits are isolated by resistors. An ultrasonic network uncouples RF from the output and helps to keep the

amplifier stable with reactive loads.

OPERATING VOLTAGE (AC MAINS) - On the back panel will indicate the correct AC mains voltage. Connecting to the wrong voltage is dangerous and

may damage the amplifier. Always be sure the source voltage for your areas matches the required voltage for your amplifier.

GAIN CONTROLS - The gain controls are located on the front panel and are calibrated in 2dB of attenuation from full gain. It is best to a d j ust the amplifier

so no “hissing” is heard from speakers with no music being played, this will ensure the lowest possible distortion d u ring normal operation.

AMPLIFIER FEATURES

THRU (NA-5600 and NA-8600 Only) - THRU will allow the user to daisy-chain one amplifier’s signal input into another amplifier. Plug the signal source

outputs into the first amplifier’s input, patch from the amplifier’s THRU jacks to the next amplifier’s input, and so on, daisy-chaining as many amplifiers as there is

no excessive level loss.

GROUND LIFT SWITCH - Applying or lifting the ground switch will change level for background noise and hum, if the noise level remains the same in either

position, better to keep the ground lift switch in the ground position. This will eliminate 50Hz/60Hz cycle hum that is sometimes induced when mounting several

units in the same rack.

LOW CUT FILTER (NA-5600 and NA-8600 Only) - The low-cut filter removes extremely low frequencies from the audio signal that could cause speaker

distortion or damage. The DIP switches on the rear panel allows you to enable or disable the filter for each channel, as well as adjust either a 50Hz or 30 Hz cut-off. The
DIP switches on the rear panel allows you to configure the low cut filter. The diagram below details the functions of each DIP switch, the functions are also printed on the
rear panel of the amplifier.

CH. 1 CH.2

1 Low Cut

On / Off

2 ON=30Hz

OFF=50Hz

1

2 3

4

OFF

ON

3 ON=30Hz

OFF=50Hz

4 Low Cut

On / Off

CONFIGURING THE LOW CUT FILTER:

ACTIVATING LOW CUT FILTERS - DIP switches 1 and 4 activate and deactivate the Low Cut Filter. Channel 1 filter is controlled by

DIP switch 1 and channel 2 filter is controlled by DIP switch 4.

LOW CUT FREQUENCY SELECTOR - When the Low Cut Filter is activated, DIP switches 2 (channel 1) and 3 (channel 2) will control
the frequency roll-off. When DIP switches 2 and 3 are in the "ON" position, the filter will cut off frequencies at and below 30Hz, when
these DIP switches are in the "OFF" position, the filter will cut off frequencies at and below 50Hz.

LED INDICATORS : Each has six LEDs. Four LEDs indicate signal level activity; two green LEDs and two yellow LEDs. One red

LED indicates signal clipping and one red LED indicates protection’s mode for shorts/overload. In addition, there is also one blue LED
in the center which indicates the mains power is applied to the unit.

UNiKA NA-3600/NA-5600/NA-8600

Important Precautions Introduction Front Panel Rear Panels Set Up Operating Modes Protection Features Specifications

pag e 14

SPECIFICATIONS

R.M.S. Output Power 2 Ch Driven

2ohms/4ohms/8ohms

1KHz 1% THD

NA-3600 NA-5600 NA-8600

R.M.S. Output Power Bridged Mono

4ohms/8ohms

1KHz 1% THD

Input Sensitivity

Frequency Response (20Hz~20KHz)

Total Harmonic Distortion

Crosstalk @ 1KHz

Damping Factor

Output Circuitry

Fan

Power Consumption

@ Maximum Output Power 8ohms

640W/540W

0.775V

±0.2dB

<0.02%

>-70dBV 0dBV=0.775V

>350

1240W/880W

2000W/1400W

2ohms 320W

4ohms 270W

8ohms 180W

Signal To Noise Ratio

below rated power 20Hz to 20KHz,

A-Weighted

471W

4.27A@110V

CLASS AB

Dual 2-Speed Fans

>100dB

2ohms 620W

4ohms 440W

8ohms 260W

2ohms 1000W

4ohms 700W

8ohms 420W

0.775V

±0.2dB

<0.01%

>375

620W

5.36A@110V

CLASS AB

Dual 2-Speed Fans

>100dB

1V

±0.2dB

<0.01%

>360

990W

9A@110V

CLASS AB

Dual 2-Speed Fans

>100dB

UNiKA NA-3600/NA-5600/NA-8600

Maximum RMS Voltage

37.9V

Amplier Gain

35.7dBu

IMD-SMPTE(60Hz, 6KHz)

<0.002%

Slew Rate

>30v/us

Dimensions ( H x W x D ) 88 x 483 x 405 mm

Weight 11.2 kg 14kg

Rack Space 2U 2U 2U

45.7V

35.4dBu

>30v/us

<0.002%

>-70dBV 0dBV=0.775V

Hum & Noise -100dB (Unweighted)

88 x 483 x 405 mm

17kg

58V

37.5dBu

>32v/us

<0.002%

88 x 483 x 405 mm

>-70dBV 0dBV=0.775V

Pro fes sio nal Po wer Am pli f ie rs

UNiKA