User Instructions
This booklet contains important information concerning the proper and safe operation of your new amplifier..
DCA-Series
DCA-900 / DCA-1100 / DCA-1300 / DCA-2000
Made in Taiwan
Profe ssion al Power Amp lif iers
Index
02 Introduction
03 Front Panel
05 Rear Panel
07 Set Up
10 Operating Modes
14 Protection
15 Features
16 Specifications
UNiKA
CHANNEL 1 CHANNEL 2
PROTECT
CLIP
SIGNAL
POWER
0 010 10
Professi onal St ereo Am plifie r
0 010 10
LIMITER LIMITER
ON ON
UNiKA
POWER
BRIDGE
CLIP
-10
-20
SIG
-10
-20
SIG
O
LIMITER LIMITER
ON ON
STEREO
MONO
OVER HEAT
-5 -5
PROTECT
DCA 2000
PROFESSI ONAL PO WER AMP LIFIE R
0 0
10 10
PROTECTCLIP
CHANNEL 1 CHANNEL 2
UNiKA
CHANNEL 1 CHANNEL 2
PROTECT
CLIP
SIGNAL
POWER
0 010 10
Professi onal St ereo Am plifie r
0 0
10 10
UNiKA
POWER
CHANNEL 1 CHANNEL 2
PROTECT
CLIP
SIGNAL
POWER
0 010 10
Professi onal St ereo Am plifie r
0 010 10
UNiKA
POWER
IMPORTANT SAFETY INSTRUCTIONS DCA-900/DCA-1100/DCA-1300/DCA-2000
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 DCA -900/ DCA -110 0/D CA-
1300/ DCA -20 00 ampl ifi er. Th ese a mpl ifier s are r epr esentati on of U NiKA’s
conti nui ng co mmitm ent t o pro duce the bes t and h igh est qua lit y aud io
produ cts a t an af for dable pric e. Th ese a mpl ifiers are d esi gne d to prov ide a
big imp act i n sou nd repr odu cti on. Please r ead a nd un derst and t his m anual
compl ete ly be fore at tem pti ng to operat e you r new a mplif ier. This b ook let
conta ins i mpo rtant i nfo rma tion conce rni ng th e prope r and s afe o peration o f
your ne w amp lif ier.
UNPACKIN G: E ver y DCA-900/ DCA -110 0/D CA-1300/ DCA -20 00
ampli fie r has b een tho rou ghl y tested and h as be en sh ipped i n per fec t
opera tin g con ditio n. Ca ref ully check t he sh ipp ing car ton f or da mage that
may hav e occ urr ed duri ng sh ipp ing. If the ca rto n app ears to b e dam age d,
caref ull y ins pect yo ur un it fo r any damage a nd be s ure a ll acce sso rie s
neces sar y to op erate t he sy ste m have arriv ed in tac t. In the e ven t dam age
has bee n fou nd or p arts ar e mis sin g, please co nta ct yo ur deal er fo r fur ther
instr uct ion s.
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 DCA-900/DCA-1100/DCA-1300/DCA-2000
Introduction Front Panel Rear Panel Set Up Operating Modes Protection Features Specifications
DCA-900 & DCA-1300 FRONT PANEL
Figure 2
1. Rack ing Mounti ng Ears - Tw o fro nt pane l mou nting h oles are pro vided
on each m ounting ea r.
2. Fan In let Grills a nd Filt er - DC A Series a mpl ifier s are cooled b y two
rear mo unted fans . Cool ai r fro m front g ril ls is fil tered and fl ows ove r the
heats inks and exh austs t o bac k side. M ake s ure the se outlets r emain
clear t o allow unre stric ted a ir flow.
3. AC P ower Switc h - DCA Serie s ampli fie rs have a f ron t-pan el AC mains
power s witch.
4. Limi ter Switch ( DCA-1 300 o nly) - Th is is u sed to ac tivate the
chann el's built -in lim ite r. The l imite r reduces th e avera ge ou tput le vel
when th e signal beg ins to di sto rt, thi s pro cess is d esigned to r educe
disto rtion and pr otect t he sp eaker s. Se e limit er page 14.
5. Sign al Indicat or - Illu min ates to i ndi cate th at a signal (a bove a
minim um thresho ld) is pr ese nt at the a mpl ifier i nput, and th at the si gna l
is bein g amplifie d.
pag e 3
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
6. Clip I ndicator - T his red L ED wi ll begi n to fl ash whe n the channe l
begin s to overloa d (clip ), at t his poi nt th e chann el will begi n to dist ort .
Under h eavy clipp ing act ivi ty, lo wer the c hannel's g ain con tro l to redu ce
the ris k of damage to y our spe ake rs and am pli fier. This LE D may glo w
when th e unit has bee n turne d off , thi s is norm al.
7. Prot ect Indica tor - The r ed Pr otect L ED wi ll begi n to glow when t he
chann el goes into p rotec t mod e. When t he ch annel g oes into pro tect
mode al l output for t hat cha nne l will tu rn of f. Th is is to prote ct any
speak ers connec ted to th e cha nnel.
8. Gain C ontrol - Thi s rotar y kno b is used t o con trol th e output sig nal lev el
of the ch annel. Turn ing the k nob i n a clock wise direc tion wi ll in creas e
outpu t signal lev el.
9. Powe r Indicato r - These y ell ow LEDs w ill g low whe n mains powe r is
appli ed to the unit . The se ligh ts ma y conti nue to glow br iefly a fte r mains
power h as been turn ed off, this i s nor mal.
8
6
9
457
CHAN NEL 1 CHAN NEL 2
PROT ECT
CLIP
SIGN AL
POWE R
0 010 10
Pro fessi onal St ereo Am plifi er
0 0
10 10
LIMITER LIMITER
ON ON
UNiKA
POWER
3
2
1
CHAN NEL 1 CHAN NEL 2
PROT ECT
CLIP
SIGN AL
POWE R
0 010 10
Pro fessi onal St ereo Am plifi er
0 0
10 10
UNiKA
POWER
8
695
7
3
2
1
Figure 1
Introduction Rear Panel Set Up Operating Modes Protection Features SpecificationsFront Panel
DCA-2000 FRONT PANEL
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
BRIDGE
CLIP
-10
-20
SIG
-10
-20
SIG
O
LIMITER LIMITER
ON ON
STEREO
MONO
OVER HEAT
-5 -5
PROTECT
DCA 2000
PRO FESSI ONAL PO WER AMP LIFIE R
0 0
10 10
PROTECT CLIP
CHAN NEL 1 CHAN NEL 2
UNiKA
Figure 3
8 9310
7
4 65
pag e 4
1. Rack ing Mounti ng Ears - Tw o fro nt pane l mou nting h oles are pro vided o n
each mo unting ear.
2. Fan In let Grills a nd Filt er - DC A Series a mpl ifier s are cooled b y two rea r
mount ed fans. Coo l air fro m fro nt gril ls is f ilter ed and flows o ver the
heats inks and exh austs t o bac k side. M ake s ure the se outlets r emain c lea r
to allo w unrestri cted ai r flo w.
3. Sign al Indicat or - Thes e gre en and ye llo w LEDs wi ll glow acco rding t o the
avera ge signal ou tput.
4. Clip I ndicator - T his red L ED wi ll begi n to fl ash whe n the channe l begin s to
overl oad (clip) , at this p oin t the cha nne l will be gin to disto rt. Und er he avy
clipp ing activi ty, lo wer the c han nel's g ain contro l to redu ce th e risk of
damag e to your spea kers an d amp lifie r. Thi s LED may glow w hen the u nit
has bee n turned off , thi s is norm al.
5. Limi ter Switch - T his is us ed to a ctiva te th e chann el's built -in lim ite r. The
limit er reduces t he aver age o utput l eve l when th e signal beg ins to di sto rt,
this pr ocess is des igned t o red uce dis tor tion an d protect th e speak ers . See
limit er page 14.
6. Prot ect Indica tor - The r ed Pr otect L ED wi ll begi n to glow when t he chan nel
goes in to protect m ode. Wh en th e chann el go es into p rotect mod e all out put
for tha t channel wi ll turn o ff. This i s to pr otect a ny speaker s conne cte d to the
chann el.
7. Over heat Indic ator - Th is in dicat or wi ll begi n to flow when t he chan nel g oes
into th ermal prot ectio n mod e. When t he un it goes i nto therma l prote cti on,
the cha nnel outpu t will tu rn of f. Se e The rmal Pr otection p age 14.
8. Gain C ontrol - Thi s rotar y kno b is used t o con trol th e output sig nal lev el of
the cha nnel. Turni ng the kn ob in a c lockw ise d irect ion wil l inc rease o utp ut
signa l level.
9. Mode S election S witch - T his r ecess ed, t hree- position s witch c onf igure s
the amp lifier for S tereo , Mon o or Brid ged M ode ope ration. Amp lifie rs ar e
facto ry-confi gured f or St ereo Mo de. S ee sect ion on Mode Se lecti on fo r
more in formatio n.
10. AC Power Swit ch - DCA Ser ies a mplif ier s have a fr ont-pane l mains AC
power s witch.
21
Introduction Rear Panel Set Up Operating Modes Protection Features SpecificationsFront Panel
DCA-1300 & DCA-2000 REAR PANEL
11. Fan Ou tlet Ports - C oolin g air e nters t he am plifi er through t he fron t
grill s and exhaus ts thro ugh t he fans . Be su re not to b lock these p orts
when in stalling t he ampl ifi er or oth er as socia ted equipm ent. Air m ust
flow un impeded th rough t hes e ports .
12. Channel 2 Subwoofer Mode On/Off Switch (DCA-1300 & DCA-2000 only) -
Turns the subwoofer mode for channel two on and off.
13. Cha nnel 2 Frequ ency Adj . (DCA- 130 0 & DCA-2 000 only) - Th is pot
adjus t the freque ncy lev el se nt to you r spe aker on c hannel two w hen
using y our amplif ier in su bwo ofer mo de.
14. Channel 2 Balanced 1/4" TRS & XLR Input Connectors - These
connectors accept input signals on balanced TRS and XLR input plugs. See
the figures 6-8 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 C ut Filter Mo de Swit che s (DCA- 1100 & D CA-13 00 only) -
These D IP sw itche s are u sed to ac tiv ate and a djust the bu ilt-i n Low
Cut Fil ter, see ”Low C ut Filt er” o n Page 15 .
16. Channel 1 Balanced 1/4" TRS & XLR Input Connectors - These
connectors accept input signals on balanced TRS and XLR input plugs. See
the figures 6-8 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. Cha nnel 1 Frequ ency Adj . (DCA- 130 0 & DCA-2 000 only) - Th is pot
adjus t the freque ncy lev el se nt to you r spe aker on c hannel one w hen
using y our amplif ier in su bwo ofer mo de.
18. Channel 1 Subwoofer Mode On/Off Switch (DCA-1300 & DCA-2000 only) -
Turns the subwoofer mode for channel one on and off.
19. Mod e Selectio n Switc h – For t he DCA- 900 , DCA-1100 an d DCA-1300
all des igned with a r ecess ed, t wo-po sit ion swi tch config ures th e
ampli fier for Ste reo or Br idg ed Mode o per ation ; for the DCA- 2000 is
desig ned with a rec essed , thr ee-po sit ion swi tch config ures th e
ampli fier for Ste reo, Pa ral lel or Br idg ed Mode o peration . Amplif ier s are
facto ry-confi gured f or St ereo Mo de. S ee sect ion on Mode Se lecti on fo r
more in formatio n.
pag e 5
Figure 4: DCA-1300 REAR PANEL
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
CAUTION
MINIMUM LOAD IMPEDANCE
2 OHM PER CHANNEL
4 OHM BRIDGE
AC IN
-120V 60Hz
FREQUENCY
CH-2
CH-1
SUB
WOOF
DIPON
1 2 3 4
20Hz 200Hz
SUB
WOOF
FREQUENCY
200Hz20Hz
NORMALNORMAL
CH-1
CH-2
11 14
171619
21
20
11
1513
22 25 26 27 28
12 18
Introduction Front Panel Set Up Operating Modes Protection Features SpecificationsRear Panel
pag e 6
Figure 5: DCA-2000 REAR PANEL
25. Cha nnel 2 Outpu t Jack / 5- Way Bind ing P ost - Con nec t to your
speak er's input j ack. Re d is po sitiv e sig nal and B lack is nega tive
signa l.
26. Cha nnel 1 Outpu t Jack / 5- Way Bind ing P ost - Con nec t to your
speak er's input j ack. Re d is po sitiv e sig nal and B lack is nega tive
signa l.
27. Gro und Lift Swi tch - Thi s swi tch is us ed to d iscon nect the int ernal
groun d signal fro m the amp lif ier cha ssi s groun d. Th is may re duc e the
buzz th at is caused f rom an el ect rical 5 0Hz /60Hz c ycle.
28. AC POWER Cord - P lug thi s cab le into a s tan dard 110V or 22 0V wall
outle t. Be sure tha t the sup pli ed volt age i n your ar ea matches t he
ampli fiers requ ired vo lta ge. Nev er pl ug your a mplifier i nto a wal l out let
that do es not match t he requ ire d volta ge of y our amp lifier, ser ious
damag e may occur to y our uni t. P.S. f or th e DCA-1100 is d esigned as
IEC AC soc ket, it's ch angea ble p er cust ome r's req uirement s.
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
GROUN D
LIFT
MONO
STERE O
BRIDG E
SUB
WOOF
NORMA L
FREQU ENCY
NORMA L
SUB
WOOF
FREQU ENCY
CH-1
20 Hz20 Hz 200 Hz200 Hz
CH-2
INP UT BALA NCE INPU T THRU
CH-1
CH-2
OUT PUTS
~120 V 60Hz
4800 W ATTS
FUSE F 4 0A/12 0V
CAU TION
MINIM UM LOAD I MPEDA NCE
2 OHM PER C HANNE L
4 OHM BRI DGE
SPE AKON
1+ HOT
1 COLD
12
3
HOT
COLD
GND
BRI DGE
MONO
_
+
+ +
_
_
CH-1
CH-2
S
U
E
F
S
U
E
F
S
U
E
F
CH-1
CH-2
12 13 1716 21 2219 20
23
24 25 27
26 28
11 1814
20. Fus e Holder - Thi s holde r hou ses the e xte rnal fu se. Alway s replace
with th e exact same t ype fus e, ot herwi se in struc ted to do so by an
autho rized audi o servi ce te chnic ian .
21. Channel 2 XLR THRU Jack (DCA-1100, DCA-1300 & DCA2000 only) -
This jack is used to send a parallel signal from the channel two input jack to
another device or amplifier.
22. Channel 1 XLR THRU Jack (DCA-1100, DCA-1300 & DCA2000 only) -
This jack is used to send a parallel signal from the channel one input jack to
another device or amplifier.
23. Cha nnel 2 Speak on Outp ut - Us e pins 1+ a nd 1- o f this 4- pole
Speak on connect or to con nec t to your s pea kers in put jack.
24. Cha nnel 1 Speak on Outp ut - Us e pins 1+ a nd 1- o f this 4- pole
Speak on connect or to con nec t to your s pea kers in put jack.
DCA-1300 & DCA-2000 REAR PANEL
Introduction Front Panel Set Up Operating Modes Protection Features SpecificationsRear Panel
INPUTS - The DCA seri es ampl ifi er allo ws yo u to use tw o types of inp ut conn ect ors per c han nel, a XL R female jac k for bal anc ed conn ect ions
and a 1/4 ” TRS f emale j ack t hat wil l acc ept bal anced and un balan ced c onnec tor s. Use th ese connec tions t o con nect th e out put sig nal from a
mixer, c ross-ove r or EQ to Your D CA ser ies amp lifiers. A bal anced c onn ectio n is re comme nded for cab le runs l ong er than 2 0ft . When
const ructing yo ur own XL R cab les fol low t he pin co nfigurat ion des cri bed bel ow for prope r conne cti ons. Fo r cab le runs s horter tha n 20ft., you
may cho ose the 1/4” T S unb alanc ed in put opt ion. The 1/4” TS un bal anced i npu t optio n may be more co nveni ent f or most u ser s due to th e
abund ant supply o f prefa bri cated c abl es avai lable a t you r local a udi o deale r. You may use the tw o XLR “In put T hru ” jacks t o jum p a paral lel
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.
OUTPUTS -
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
speak er wire may be c onnec ted b y bare wi re (d irect ly connect ed, usu all y for per man ent con nections ), bana na pl ug, or
spade c onnector. C onnec tio ns are ma de to c hanne l one and c han nel two o utp uts for S tereo Mode o r across the r ed
termi nals of chan nel one a nd ch annel t wo fo r Mono Br idge Mode.
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 the am plifier bi nding p ost , be sure t o plu g the neg ative lead i nto the b lac k termi nal a nd posi tive lead in to the re d
termi nal. Ensur ing pro per p olari ty wi ll avoi d speak ers b eing ou t of ph ase tha t can cause a lo ss of bass res ponse .
BANAN A PLUG: (F igure 9 ) Whe n conne cti ng your s peakers to t he ampl ifi er usin g ban ana plu g, be sure tha t the red a nd
black c aps on the bin ding po st ar e compl ete ly scre wed in. Inse rt the ba nan a plug in to th e caps of t he binding p ost, be s ure
that th e banana plu g is inse rte d secur ely t o avoid t he risk of pop ping ou t.
Figure 9
2 Hot (+data)
1
3
2
Male XLR Pin Configuration
Figure 6
1 Ground / Return / 0v
3 Negative (-data)
Balanced TRS 1/4” Plug
Hot (+)
Negative (-)
Ground/Shield
Figure 7
Unbalanced TS 1/4” Plug
Hot (+)
Negative (-)
Figure 8
pag e 7
SET UP
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
Introduction Front Panel Rear Panel Operating Modes Protection Features SpecificationsSet Up
pag e 8
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
BARE WIRE CONNECTION: (Figure 10)
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 reveled 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 11)
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:
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 speaker’s negative connection and the channel one positive output terminal for the speaker’s
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 11
STEREO CONNECTIONS USING THE NEUTRIK SPEAKON OUTPUT CONNECTORS: (DCA-2000 only)
Recent regulatory requirements in Europe have outlawed the use of the dual banana plug and force amplifier users to terminate their speaker cables with spade lugs
or bare wire ends. This is not advantageous to most users that want to reconfigure their systems or quickly change out an amplifier. The Neutrik Speakon connector
provides the most convenient solution to this problem, eliminating the need for spade lugs or bare wire end cables. Major speaker manufacturers have been using
Speakon connectors on their products for years, so chances you are ready to use the Speakon connection. With Speakon connectors, you can connect straight from
the amplifier to the speaker. The Speakon connector used on this amplifier meets all known safety regulations. Once wired correctly, the connector cannot be plugged
in backwards, causing the type of inverted polarity situations that have become common with banana hookups. This connection will provide a safe, secure and
reliable method of connecting your speakers to your new amplifier. You can purchase the Speakon NL4FC connectors from your local audio dealer.
1/5"
13mm
Figure 10
Introduction Front Panel Rear Panel Operating Modes Protection Features SpecificationsSet Up
pag e 9
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
You will need a pair of Neutrik speakon NL4FC connectors. You will also need highquality two or four conductor speakon cable, a pair of needle-nosed pliers and a 1.5-mm
Allen key to assemble the speakon connectors to your speaker wire. To assemble the
Neutrik Speakon NL4FC connector, complete the following steps:
1. Strip back 3/4-inch of the cable casing. Strip off 1/4-inch from the end of each of the
conductors down to bare wire, and insert the brass fittings (Figure 12).
2. Slide the wire tensioner (D) and the Speakon coupler (E) through the cable end. See
Figure 13.
3. Insert each wire with the brass fittings into the top of appropriate slot of the connector
insert (B) as shown in Figure 14. Use a 1.5-mm Allen key to tighten the connection
(Figure 15).
4. Be sure to properly match the positive (+) and negative (-) leads of each wire (Figure
16).
5. Slide the connector insert (B) into the connector housing (A), making sure that the
large notch on the outer edge of the insert lines up with the large groove on the inside
of the connector housing. The insert should slide easily through the housing and out
the other side until it extends approximately 3/4-inch from the end of the housing.
6. Slide the cable tensioner (D) along the cable and insert into the housing (A), making
sure that the large notch lines up with the large groove on the inside of the connector
housing (A). The cable tensioner (D) should slide easily into the housing until only 3/8inch of the tensioner (D) extends from the back end of the connector.
7. Slide the coupler (E) along the cable and screw it onto the end of the housing (A).
Before tightening, you may want to test the connector to make sure it has been
assembled properly.
SPEAKON ASSEMBLY:
Figure 16
+
+1
-1
-2
+2
+
+1
-1
-2
+2
4-Conductor Speaker Cable
Brass Inserts
Figure 12
A EDCB
Figure 13
Figure 15
Introduction Front Panel Rear Panel Operating Modes Protection Features SpecificationsSet Up
Figure 14
OPER ATING MOD ES
STEREO OPERATION : Page 1 / Figur e 17 details a n examp le of a t ypica l ste reo set -up. Conne ct your i npu ts into c han nels on e and two of the 0
ampli fier. Conne ct your s pea kers to t he ou tputs o n the rear of th e ampli fie r. Be sure t hat y our fro nt gain cont rols ar e tur ned dow n to th eir low est level (f ully
count er-clock wise) . Turn y our amp lif ier on. Tu rn your inpu t sourc e lev el up. Us e you r front g ain contro ls to reg ula te the ou tpu t volum e. Be sure not t o raise
the vol ume to the cli p level , how ever an i nte rmitt ent clip sig nal is ac cep table .
MONO BRIDGE OPE RATION : Page 11/ Fi gur e 18 deta ils a m ono bri dge set-up . Be sure y our a mplif ier a nd all ot her audio eq uipme nt ar e power ed
down. F lip the Para llel Mo no/ Stere o/M ono Bri dge switch t o the Mon o Bri dge pos iti on. Con nect input s ignal t o cha nnel on e. Co nnect y our speake r acros s
the red o utput bind ing pos t on th e rear of y our a mplif ier. Turn your e quipm ent o n (your a mpl ifier s hould alwa ys be the l ast i tem you t urn o n). Appl y an input
sourc e signal to yo ur ampl ifi er. Use th e cha nnel on e gain to regu late yo ur am plifi er output.
PARALLEL MONO (DCA- 20 00 only): Par all el ties t he two chann el line i npu ts toge the r, so that t hey will bot h be driv en by t he same s ign al, wit hout
the nee d for extern al jump ers o r wirin g. Bo th ampl ifier chan nels wi ll op erate i nde pende ntly. Tho ugh the y car ry the sa me si gnal, t heir gain co ntrol s aff ect
only th eir respec tive ch ann els, an d the y both mu st use their r espec tiv e speak er ou tputs . Never atte mpt to pa ral lel the s pea ker out puts, this m ay caus e
serio us damage to y our amp lif ier! This mo de is recomm ended w hen u sing th e DCA -2000 t o run bass spe akers , to ac hieve b ett er low en d. To run i n parallel
mono mo de connect y our sys tem a s you wou ld if y ou were g oing to run in s tereo m ode . The n flip th e mode switc h to Mono . Be su re the am pli fier is o ff or t he
power i s disconne cted be for e makin g any c hange s.
pag e 10
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
Figure 17 TYPICAL STEREO OUTPUT CONNECTIONS
SPEAKERS
2 OHM MINIMUM
SPEAKERS
2 OHM MINIMUM
CH-1
Input
DCA-2000 Rear Panel
CH-2
Input
GROUND
LIFT
MONO
STEREO
BRIDGE
SUB
WOOF
NORMAL
FREQUEN CY
NORMAL
SUB
WOOF
FREQUEN CY
CH-1
20 Hz20 Hz 2 00 Hz200 Hz
CH-2
INPUT B ALANC E INPUT T HRU
CH-1
CH-2
OUTPU TS
~120V 60 Hz
4800 WATT S
FUSE F 40A /120V
CAUTI ON
MINIMUM L OAD IMP EDANC E
2 OHM PER CHA NNEL
4 OHM BRIDG E
SPEAK ON
1+ HOT
1 COLD
12
3
HOT
COLD
GND
BRIDG E
MONO
_
+
+ +
_
_
CH-1
CH-2
S
U
E
F
S
U
E
F
S
U
E
F
CH-1
CH-2
MONO
STER EO
BRID GE
Introduction Front Panel Rear Panel Set Up Protection Features SpecificationsOperating Modes
pag e 11
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
SPEAKERS
4 OHM MINIMUM
CH-1 Input
DCA-2000 Rear Panel
Only
Figure 18 TYPICAL MONO BRIDGE SET-UP
Either CH-1 or CH-2 input,
or Both inputs.
Figure 19 TYPICAL PARALLEL SET-UP (DCA-2000 only)
SPEAKERS
2 OHM MINIMUM
SPEAKERS
2 OHM MINIMUM
CH-1 Input
DCA-2000
Rear Panel
CH-2 Input
GROUND
LIFT
MONO
STEREO
BRIDGE
SUB
WOOF
NORMAL
FREQUEN CY
NORMAL
SUB
WOOF
FREQUEN CY
CH-1
20 Hz20 Hz 2 00 Hz200 Hz
CH-2
INPUT B ALANC E INPUT T HRU
CH-1
CH-2
OUTPU TS
~120V 60 Hz
4800 WATT S
FUSE F 40A /120V
CAUTI ON
MINIMUM L OAD IMP EDANC E
2 OHM PER CHA NNEL
4 OHM BRIDG E
SPEAK ON
1+ HOT
1 COLD
12
3
HOT
COLD
GND
BRIDG E
MONO
_
+
+ +
_
_
CH-1
CH-2
S
U
E
F
S
U
E
F
S
U
E
F
CH-1
CH-2
MONO
STER EO
BRID GE
GROUND
LIFT
MONO
STEREO
BRIDGE
SUB
WOOF
NORMAL
FREQUEN CY
NORMAL
SUB
WOOF
FREQUEN CY
CH-1
20 Hz20 Hz 2 00 Hz200 Hz
CH-2
INPUT B ALANC E INPUT T HRU
CH-1
CH-2
OUTPU TS
~120V 60 Hz
4800 WATT S
FUSE F 40A /120V
CAUTI ON
MINIMUM L OAD IMP EDANC E
2 OHM PER CHA NNEL
4 OHM BRIDG E
SPEAK ON
1+ HOT
1 COLD
12
3
HOT
COLD
GND
BRIDG E
MONO
_
+
+ +
_
_
CH-1
CH-2
S
U
E
F
S
U
E
F
S
U
E
F
CH-1
CH-2
MONO
STER EO
BRID GE
Introduction Front Panel Rear Panel Set Up Protection Features SpecificationsOperating Modes
SUBWOOFER MOD E (DCA-1300 & DCA -2000 only): Th is mo de send s low freque ncies t o you r speak ers w ithou t the use of an ex terna l cro ss-
over. The sub woofe r ope ratio n can b e opera ted in stere o, para lle l mono or m ono b ridge m odes. Chan ge the di ffe ren t opera tin g modes b y flipping t he mode
switc h on the rear of t he unit t o you r desir ed op erati ng mode. Also , set the s ubw oofer m ode s witch t o the “SUBWO OF” pos iti on. Use t he fr equen cy selecto r
to adju st the subwo ofer ou tpu t frequ enc y from 20 Hz to 200Hz. The di ffe rent su bwo ofer mo des are list ed as fol low s:
BRIDG E SUBWOOFE R - This op era tion al low s you to ge t the most pos sible p owe r out of yo ur am plifi er for the sol e purpo se of r unnin g a hig h power ed
subwo ofer louds peake r in mo no. To avoid a mpl ifier o verheati ng, nev er ru n the amp lif ier bel ow 4 ohms in thi s mode. I n thi s mode yo u may u se the fr equency
adjus tment on the r ear of th e amp lifie r, to co ntrol t he frequen cy outp ut le vel. Fr equ encie s may be adjus ted fro m 20H z to 200H z. Pa ge 12/F igure20 de tails a
typic al Bridge Su bwoof er se t-up.
STERE O SUBWOOFE R - This op era tion is s imi lar to th e Bridge Sub woofe r ope ratio n but i n stere o. Th is operati on allo ws yo u to run se ver al subw oofers
down to a m inimum of 2 oh ms. To avoid a mpl ifier o ver heati ng, never ru n the amp lif ier bel ow 2 oh ms in thi s mode. Set up t his mode as yo u would a s tan dard
Stere o set-up. Be s ure bot h cha nnels a re se t to “SUB WOOF”. In th is mode y ou ma y use the f req uency a djustmen t on the re ar of t he ampl ifi er, to con trol the
bass fr equency ou tput le vel . Frequ enc ies may b e adjusted f rom 20H z to 20 0Hz. Pa ge 13 /Figu re 21 detail s a typic al St ereo Su bwo ofer se t-up.
PARALLEL MONO SU BWOOF ER (D CA-20 00 on ly)- Th is operati on is sim ila r to the St ere o Subwo ofer opera tion bu t in mo no. Whe n run ning su bwoofers , it
is usua lly recomm ended t o run t hem in mo no mo de to ach ieve a clean er tigh ter l ow end. This o peration a llows y ou to r un seve ral s ubwoo fers down to a
minim um of 2 ohms. To avo id am plifi er ov erhea ting, neve r run the a mpl ifier b elo w 2 ohms in t his mode. Se t up this m ode a s you wou ld a st andar d Stereo
set-u p. Be sure bot h chann els a re set to “ SUB WOOF” a nd the mode sw itch is s et to “ Mono” . In th is mode y ou may use the f reque ncy a djust men t on the re ar
of the am plifier, to c ontro l the b ass fre que ncy out put level. F reque nci es may be a dju sted fr om 20Hz to 200 Hz.
ONE CHA NNEL NORMA L / ONE C HAN NEL SUBWOO FER ( BI-AM P) - You may al so use yo ur am plifi er to b i-amp y our system . You may use o ne si de of the
ampli fier to powe r a subwo ofe r and the o the r side to p ower a full ra nge spe ake r. Follo w the s et-up g uides list ed abov e to mi x and mat ch yo ur oper ations.
pag e 12
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
Do Not Use
CH-2 Input
CH-1 Input
Set to
Subwoof
Negative (-) Lead
Positive (+) Lead
DCA-2000 Rear Panel
Bridge Subwoofer Mode Speaker Set-Up
Figure 20
Use the two red terminal from the Binding Post to
power a subwoofer speaker in mono-bridge mode.
GROUND
LIFT
MONO
STEREO
BRIDGE
SUB
WOOF
NORMAL
FREQUEN CY
NORMAL
SUB
WOOF
FREQUEN CY
CH-1
20 Hz20 Hz 2 00 Hz200 Hz
CH-2
INPUT B ALANC E INPUT T HRU
CH-1
CH-2
OUTPU TS
~120V 60 Hz
4800 WATT S
FUSE F 40A /120V
CAUTI ON
MINIMUM L OAD IMP EDANC E
2 OHM PER CHA NNEL
4 OHM BRIDG E
SPEAK ON
1+ HOT
1 COLD
12
3
HOT
COLD
GND
BRIDG E
MONO
_
+
+ +
_
_
CH-1
CH-2
S
U
E
F
S
U
E
F
S
U
E
F
CH-1
CH-2
MONO
STER EO
BRID GE
Introduction Front Panel Rear Panel Set Up Protection Features SpecificationsOperating Modes
pag e 13
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
Either CH-1 or CH-2 input,
or Both inputs.
CH-1 Input
DCA-2000
Rear Panel
CH-2 Input
Set to
Subwoof
Set to
Subwoof
Figure Parallel Mono Subwoofer Mode Speaker Set-Up 22
Use either the bare wire
or the banana jacks
Use either the bare wire
or the banana jacks
Figure Stereo Subwoofer Mode Speaker Set-Up 21
Use either the bare wire
or the banana jacks
Use either the bare wire
or the banana jacks
CH-1 Input
DCA-2000 Rear Panel
CH-2 Input
Set to
Subwoof
Set to
Subwoof
MONO
STER EO
BRID GE
GROUND
LIFT
MONO
STEREO
BRIDGE
SUB
WOOF
NORMAL
FREQUEN CY
NORMAL
SUB
WOOF
FREQUEN CY
CH-1
20 Hz20 Hz 2 00 Hz200 Hz
CH-2
INPUT B ALANC E INPUT T HRU
CH-1
CH-2
OUTPU TS
~120V 60 Hz
4800 WATT S
FUSE F 40A /120V
CAUTI ON
MINIMUM L OAD IMP EDANC E
2 OHM PER CHA NNEL
4 OHM BRIDG E
SPEAK ON
1+ HOT
1 COLD
12
3
HOT
COLD
GND
BRIDG E
MONO
_
+
+ +
_
_
CH-1
CH-2
S
U
E
F
S
U
E
F
S
U
E
F
CH-1
CH-2
GROUND
LIFT
MONO
STEREO
BRIDGE
SUB
WOOF
NORMAL
FREQUEN CY
NORMAL
SUB
WOOF
FREQUEN CY
CH-1
20 Hz20 Hz 2 00 Hz200 Hz
CH-2
INPUT B ALANC E INPUT T HRU
CH-1
CH-2
OUTPU TS
~120V 60 Hz
4800 WATT S
FUSE F 40A /120V
CAUTI ON
MINIMUM L OAD IMP EDANC E
2 OHM PER CHA NNEL
4 OHM BRIDG E
SPEAK ON
1+ HOT
1 COLD
12
3
HOT
COLD
GND
BRIDG E
MONO
_
+
+ +
_
_
CH-1
CH-2
S
U
E
F
S
U
E
F
S
U
E
F
CH-1
CH-2
MONO
STER EO
BRID GE
Introduction Front Panel Rear Panel Set Up Protection Features SpecificationsOperating Modes
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
pag e 14
PROTECTION
LIMITER - The DCA-1300 and DCA-2000 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 LEVE LS AT DIFFERENT O UT PUT 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 pus hed
hard en ough to cont inual ly li ght the “ CLI P ” indicato r.
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 should 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 pro tecti on
circu its will pre vent th is co nditi on la sting m ore than a min ute or tw o.
SHORT CIRCUIT P ROTECTION - The DCA ser ies amp lif iers co mes w ith bui lt-in Outp ut Shor t Cir cuit Pr ote cts. The Out put Short Ci rcuit P rot ectio n
prote cts the outp ut devi ces o f the amp lif ier fro m short circ uits an d str essfu l loa ds. If yo ur speaker l ines sh ort ed, the a mpl ifier a utomatic ally de tec ts this
probl em and disco ntinu ed op erati on for that ch annel . If on e side of y our a mplif ier b ecome s shorted an d goes in to pr otect m ode, the oth er side will c ontin ue
to oper ate normal ly. Du ring sh ort c ircui t protecti on, the "CLI P" LED an d “PR OTECT " LED w ill lig ht simulta neous ly in dicat ing amplif ier fau lt. C hanne l out put
durin g the “Short C ircui t Pro tecti on" w ill be in terrupte d (i.e. n o sou nd outp ut) . Short C ircuit Pro tecti on ca n usual ly be t raced b ack to the sig nal out put l ine
(i.e. s peaker lin e). Che ck th e line fr om th e outpu t terminal o f the amp lif ier to th e spe aker. If t his line is go od, che ck th e inter nal s peake r connecti ons and
compo nents. A sho rt circuit w ill usu all y be trac ed to a b ad cabl e or a bad speak er comp one nt and is r are ly trac ed to the ampl ifier i tse lf.
THERMAL PROTECTION - Dual variable speed fans on the DCA 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.
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.
Introduction Front Panel Rear Panel Set Up Operating Modes Features SpecificationsProtection
pag e 15
OPERATING VOLTAGE (AC MAINS) - On the rear 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
adjust 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.
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
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
AMPL IFIER FEATURES
THRU (DCA-1100 , DCA-1300 & DCA- 2000) : THR U will al low the user t o daisy -ch ain one a mpl ifier ’s sign al inpu t int o anoth er am plifi er. Plug the
signa l source out puts in to th e first a mpl ifier ’s inpu t, patc h fro m the amp lif ier’s THRU jacks to t he next a mpl ifier ’s inpu t, and so on, da isy-c hai ning as m any
ampli fiers as the re is no ex ces sive le vel l oss.
GROUND LIFT SWI TCH : Applying o r lifti ng th e groun d switch wil l chang e lev el for ba ckg round n oise and hum , if the no ise l evel re mai ns the sa me in
eithe r position , bette r to ke ep the gr oun d lift sw itch in the gr ound po sit ion. This wi ll elimina te 50Hz /60 Hz cycl e hum t hat is so metimes in duced w hen
mount ing severa l units i n the s ame rac k.
LOW CUT FILTER (DCA-1100 and D CA-1300 Only) - T he low-cut f ilt er re moves e xtr eme ly low frequ enc ies from the a udi o sig nal that cou ld caus e
speak er distort ion or da mag e. Th e DIP switch es on the rear p anel al low s you to en abl e or disa ble the filt er for ea ch ch annel , as we ll as adj ust either a 5 0Hz
or 30 Hz cu t-off. The DIP switc hes o n the rea r pan el allo w you to confi gure th e low c ut filt er. Th e diagram be low det ail s the fun cti ons of ea ch DIP switch, th e
funct ions are als o print ed on t he rear p ane l of the am plifier.
CONFIGURING T HE LOW CUT FILTER:
ACTIVATING LOW CU T FILTERS - DIP swit che s 1 and 4 act iva te and de activate t he Low Cu t Fil ter. Cha nne l 1 filte rs is contro lled by D IP sw itc h 1 and
chann el 2 filter is c ontro lle d by DIP switc h 4.
LOW CUT F REQUENCY SELE CTO R - When th e Low C ut Filt er is activa ted, DI P swi tch es 2 (cha nne l 1) and 3 (c hannel 2) wi ll cont rol t he freq uen cy roll -off.
When DI P swi tches 2 a nd 3 ar e in the "O N" po sitio n, the filte r will cu t off f req uenci es at a nd belo w 30Hz, when t hese DI P swi tch es are in t he "O FF" pos ition,
the fil ter will cut o ff fr equen cie s at and be low 50Hz.
LED INDICATORS: For t he DC A series a mplifier s, each c han nel has 4 L EDs . One red L ED indicat es sign al cl ippin g.
One red L ED indicat es prot ect ions mo de fo r short s/overlo ad. One y ell ow LED in dic ates in put signal i s prese nt. O ne yell ow
LED ind icates the m ains po wer i s activ ate d. For th e DCA-2000 , excep t the t wo red LE Ds as m entio ned, each ch annel a lso
with fo ur LEDs indi cate si gna l level a cti vity, and one r ed LED in dic ates ov erh eatin g situatio n.
FUNCTION INDI CATO RS ( DCA-2000 on ly ): T hes e green /ye llow/ green LED in dicat ors d etail t he am plifi ers
curre nt operati ng mode ( Mon o, Ster eo or B ridge ).
Introduction Front Panel Rear Panel Set Up Operating Modes SpecificationsProtection Features
pag e 16
DCA-SERIES AMPLIFIER SPECIFICATIONS
MODEL NO.
DCA-9 00 DCA-1100 DCA-1 300
Outpu t Power:
2 ohms, 1 K hz 1% THD
4 ohms, 1 K hz 1% THD
8 ohms, 1 K hz 1% THD
(Brid ge Mode, mon o)
4 ohms, 1 K hz 1% THD
8 ohms, 1 K hz 1% THD
320W RM S Stereo.
270W RM S Stereo.
180W RM S Stereo.
640W RM S
540W RM S
620W RM S Stereo.
440W RM S Stereo.
260W RM S Stereo.
1240W R MS
880W RM S
1000W R MS Stereo.
700W RM S Stereo.
420W RM S Stereo.
2000W R MS
1400W R MS
Total Har monic Dist ortio n
20Hz- 20kHz, @ rat ed
outpu t power, 8 ohms
Less th an 0.01%
Input S ensitivi ty and
Imped ance: @ rate d
outpu t power, 8 ohms
0.775 V RMS 0.775 V RMS 1.0 V RMS
3.5" (8 .8cm)
19" (48 .3cm)
16.14 " (41cm)
24.64 l bs. (11.2kg )
3.5" (8 .8cm)
19" (48 .3cm)
16.14 " (41cm)
31.46 l bs. (14.3k g)
3.5" (8 .8cm)
19" (48 .3cm)
16.14 " (41cm)
37.4 lb s. (17kg)
Dimen sions & Weig ht:
Heigh t
Width
Depth
Weight
Frequency Response:
+/- 1db, 1w RMS. 8 ohms
+/- 0.2 db, @ rated output, 8 ohms
10 Hz - 40 kH z
20 Hz - 20 kH z
Hum & Noi se:
Below r ated outpu t,8 ohm s
100 dB, u nweighte d
Power C onsumpti on: @
rated o utput powe r, 8 ohms
4.28A @ 110VAC 5.63A @ 110VAC 9. 1A @ 110VAC
Cooli ng System:
Dual Sp eed Fans and H eatsi nks
Less th an 0.02%
Less th an 0.01%
UNiKA DCA-900/DCA-1100/DCA-1300/DCA-2000
DCA-2 000
1200W R MS Stereo.
1000W R MS Stereo.
620W RM S Stereo.
2400W R MS
2000W R MS
1.0 V RMS
3.5" (1 3.3cm)
19" (48 .3cm)
17.08 " (43.4cm)
55.66 l bs. (25.3k g)
12.54 A @ 110VAC
Less th an 0.025%
Introduction Front Panel Rear Panel Set Up Operating Modes Protection Features Specifications
Pro fes sio nal Po wer Am pli f ie rs
UNiKA
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