Page 1
User Instructions
This booklet contains important information concerning the proper and safe operation of your new amplifier..
PL-Series
PL-300 / PL-500
Made in Taiwan
Profe ssion al Power Amp lif iers
Index
02 Introduction
03 Front Panel
04 Rear Panel
05 Set Up
07 Speakon Assembly
08 Operating Modes
08 Protection
10 Specifications
UNiKA
POWER
OFF
Min Max Min Max
SIGNAL
POWER
CLIP
CH-1 CH-2
PL-300
ON
UNiKA
PROFESSIONAL POWER AMPLIFIER
UNiKA
POWER
OFF
Min Max Min Max
SIGNAL
POWER
CLIP
CH-1 CH-2
PL-500
ON
UNiKA
PROFESSIONAL POWER AMPLIFIER
UNiKA
Page 2
IMPORTANT SAFETY INSTRUCTIONS PL-300/PL-500
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.
!
!
Page 3
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 ains power b efo re making an y typ e of co nnection .
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 becom es da mag ed.
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 mains powe r.
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 PL- 300/P L-5 00 am plifiers .
These a mpl ifi ers are r epr ese ntation of U NiK A’s conti nui ng co mmitm ent t o
produ ce th e bes t and hig hes t qua lity audio p rod uct s at an affordabl e pri ce.
These a mpl ifi ers are d esi gne d to provide a b ig im pac t in soun d
repro duc tio n. Plea se re ad an d understa nd th is ma nual co mpl ete ly before
attem pti ng to o perat e you r new a mplifier. This b ook let c ontains im por tan t
infor mat ion c oncer nin g the p roper and sa fe op era tion of y our n ew am plifier.
UNPACKIN G: E ver y PL-300/P L-5 00 am plifi er ha s bee n thorough ly
teste d and h as be en ship ped i n per fect opera tin g con ditio n. Ca ref ully check
the shi ppi ng ca rton fo r dam age t hat may have o ccu rre d durin g shi ppi ng. If
the car ton a ppe ars to be d ama ged , carefull y ins pec t your un it fo r any
damag e and b e sur e all acc ess ori es necessa ry to o per ate the s yst em ha ve
arriv ed in tac t. In the e ven t dam age has been f oun d or pa rts are m iss ing ,
pleas e con tac t your de ale r for f urther ins tru cti ons.
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 PL-300/PL-500
Introduction Front Panel Rear Panel Set Up Speakon Assembly Operating Modes Protection Specifications
Page 4
POWER
OFF
Min Max Min Max
SIGNAL
POWER
CLIP
CH-1 CH-2
PL-5 00
ON
UNiKA
PROFESSI ONAL POWER AMP LIFIER
UNiKA
PL-500 FRONT PANEL
pag e 3
1. Rack M ounting Ea rs - Two fro nt pa nel mou nti ng hole s are provid ed on
each mo unting ear.
2. AC P ower Switc h - PL Serie s ampli fie rs have a f ron t-pan el AC mains
power s witch.
3. Fan In let Grills a nd Filter - PL Seri es am plifi ers a re cool ed by one
singl e rear-mou nted fa n. Co ol air fr om fr ont gri lls is filte red and f low s
over th e heatsink s and exh aus ts to bac k sid e. Make s ure these ou tlets
remai n clear to all ow unre str icted a ir fl ow.
4. Gain C ontrol - Thi s rotar y kno b is used t o con trol th e output sig nal of
the cha nnel. Turni ng the kn ob in a c lockw ise d irect ion wil l inc rease
signa l output.
5. Clip I ndicator - T his LED w ill b egin to f las h when th e channel be gins to
overl oad (clip) , at this p oin t the cha nne l will be gin to disto rt. Und er
heavy c lipping ac tivit y, low er th e chann el's gain co ntrol t o red uce the
risk of d amage to you r speak ers a nd ampl ifi er. This LED ma y glow wh en
the uni t has been tur ned off, thi s is no rmal.
6. Powe r Indicato r - This LE D wil l glow wh en ma ins pow er is applie d to the
unit. This l ight ma y con tinue t o glo w brief ly after mai ns powe r has b een
turne d off , this is n orm al.
7. 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.
8. UNiK A Logo and M odel No - PL series h ave 2 t ypes of 2 U mod els PL-
300 / PL- 500.
8
Figure 1
1 5432 6 7
UNiKA PL-300/PL-500
Introduction Rear Panel Set Up Speakon Assembly Operating Modes Protection SpecificationsFront Panel
Page 5
pag e 4
1. Unba lanced Inp ut Conn ect or - This i s the i nput te rminal of th e audio
signa l that can be co nnect ed to t he unba lan ced RCA in put connec tors.
RCA pin se tting: Tip/ signa l pos itive , Bar rel/g round.
2. Bala nced 1/4" TR S & XLR Inp ut Co nnect ors - T hese co nnectors
accep t input sign als on ba lan ced TRS and XL R input plug s.
XLR pin s ett ing : Pin-3 /si gna l negative , Pin -2/ signa l pos iti ve, Pin-1/ gro und ;
TRS pin s ett ing : Ring/ sign al ne gative, Tip / sig nal p ositi ve, S lee ve/ ground .
3. 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 fan. B e sur e not to bl ock these po rts
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 .
4. Spea kon Output C onnec tor - U se pins 1 + and 1 - of this 4 -pole
Speak on connect or to con nec t to your s pea ker’s input ja ck.
5. 5-Way Bindin g Post Outpu t Jack - Co nne ct to you r spe aker’s input
jack. R ed is positi ve sign al an d Black i s neg ative s ignal.
6. Brea ker - This bre aker is a n AC pro tecti on ci rcuit f rom short ci rcuit . Jus t
push th e switch to re set.
7. A/ C Power Inpu t - IEC AC powe r inlet conn ector, p lug t his cab le in to a
stand ard 110 or 220V w all o utlet . Be su re that s upplied vo ltage m atc hes
that of t he require d volta ge of y our amp lif ier. Nev er plug your a mplif ier
in to a wal l outlet tha t does no t mat ch the re qui red vol tage of your
ampli fier, serio us dama ge ma y occur t o you r unit.
PL-500 REAR PANEL
Figure 2
62 3 1
10
A
M
P
CH1 INPU TS
CH2 INPU TS
INPUT IMPEDANCE
40K BALANCED
20K UNBALANCED
SPEAKON
1/4 PHONE
1+ 1-
POS NEG
TIP
SLEEVE
OUTPUT CONNECTOR PINS
CH1 O UTPUT S
+
+
LOC K
LOC K
CH2 O UTPUT S
AC INP UT
BRE AKER
CAUTION
RISK OF ELECTRIC SH OCK
DO NOT OPEN
!
Serial No.:
XLR
1/4
RCA
2
1
POS
TIP
TIP
SLEEVE
BARREL
INPUT CONNECTOR PINS
3
NEG
RING
WARNING:
TO PREVENT FIRE OR SHOCK
HAZARD. DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR
MOISTURE.
4 5 7
UNiKA PL-300/PL-500
Introduction Front Panel Set Up Speakon Assembly Operating Modes Protection SpecificationsRear Panel
Page 6
INPUTS - The PL se ries al low s you to us e thr ee type s of input con necto rs pe r chann el. A XLR f emale j ack for bala nced co nne ction s, a 1/ 4”
TRS fem ale jack tha t will ac cep t balan ced a nd unba lanced con necto rs an d a RCA fe mal e jack fo r unb alanc ed connect ion. Us e the se
conne ctions to co nnect t he ou tput si gna l from a mi xer, cross- over or E Q to yo ur PL seri es ampl ifiers. A bala nced co nne ction i s rec ommen ded
for cab le runs long er than 2 0ft . When co nst ructi ng your own XL R cable s fol low the p in co nfigu ration des cribe d bel ow for pr ope r conne ctions.
For cab le runs shor ter tha n 20f t., you m ay ch oose th e RCA or 1/4” TS unb alanced in put opt ion . The se unba lanced inp ut opti ons m ay be mor e
conve nient for mo st user s due t o the abu nda nt supp ly of prefab ricat ed ca bles av ail able at y our local au dio dea ler.
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 of t he amplifi er. Th e speak er wi re may be c onnected b y bare wi re (d irect ly co nnect ed,
usual ly for perma nent co nne ction s), b anana p lug, or spad e conne cto r. Conne ctions are m ade
to chan nel one and ch annel t wo ou tputs f or St ereo Mo de.
IMPOR TANT N OTICE: Alt hough a s pea ker wil l ope rate wi th the posit ive and n ega tive le ads
plugg ed into eith er term ina l on the am pli fier bi nding p ost , be sure t o plu g the neg ati ve lead
into th e black term inal an d pos itive l ead i nto the r ed termina l. Ensu rin g prope r pol arity w ill
avoid s peakers be ing out o f pha se that c an ca use a los s of bass resp onse.
Ground
RCA Male Connector
Signal
Figure 6
pag e 5
SET UP
2 Hot (+data)
1
3
2
Male XLR Pin Configuration
Figure 3
1 Ground / Return / 0v
3 Negative (-data)
Balanced TRS 1/4” Plug
Hot (+)
Negative (-)
Ground/Shield
Figure 4
Unbalanced TS 1/4” Plug
Hot (+)
Negative (-)
Figure 5
UNiKA PL-300/PL-500
Introduction Front Panel Rear Panel Speakon Assembly Operating Modes Protection SpecificationsSet Up
Page 7
BANAN A PLUGS: ( Figur e 7)
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 bin ding post ar e compl ete ly scre wed i n. Inse rt the banan a plug in to th e caps of t he bi nding p ost, be sure
that th e banana plu g is inse rte d secur ely t o avoid t he risk of pop ping ou t.
BARE WI RE CONNECT IONS: ( Fig ure 8)
When co nnecting y our spe ake rs to the a mpl ifier u sing bare wi re, uns cre w the red a nd bl ack cap s on the
bindi ng post, be su re not to c omp letel y rem ove or un screw the re d and bla ck ca ps. Str ip ba ck the wi re
insul ation ½” (13 mm). In ser t the bar e wir e into th e hole that wa s revea led b y unscr ewi ng the bi nding post
cap. Aft er inserti ng the wi re in to the bi ndi ng post h ole, screw t he bind ing p ost cap d own o n the wir e. To
reduc e the risk of sh ock or da mag e to your a mpl ifier, b e sure that th e wire co nne cted to o ne bi nding p ost
does no t come in cont act wit h tha t of anot her.
SPADE CONNE CTO R: (Fig ure 9 )
When co nnecting y our spe ake rs to the a mpl ifier u sing spade c onnec tor, u nscre w the r ed and bl ack caps on
the bin ding post, b e sure no t to co mplet ely r emove o r unscrew th e red and b lac k caps. I nse rt the sp ade
conne ctor into th e bindi ng po st and ti ght en the ca ps down on the s pade co nne ctor. To reduce t he risk of
shock o r damage to yo ur ampl ifi er, be sur e tha t the wir e connecte d to one bi ndi ng post d oes n ot come i n
conta ct with that o f anoth er.
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 9
pag e 6
1/5 "
13m m
Figure 8
Figure 7
STERE O CONNECTI ONS USI NG TH E NEUTR IK SP EAKON O UTPUT CONN ECTORS:
Recen t regulato ry requ ire ments i n Eur ope hav e outlawed t he use of t he du al bana na plug and fo rce amp lif ier use rs to t ermin ate t heir sp eaker
cable s with spade l ugs or ba re wi re ends . Thi s is not advan tageo us to m ost use rs th at want t o reconfig ure the ir sy stems o r qui ckly ch ang e out an
ampli fier. The Neu tri k Speak on co nnect or provide s the mos t con venie nt so lutio n to this prob lem, el imi natin g the n eed for s pade lugs or b are wir e
end cab les. Major s peake r man ufact ure rs have b een using Sp eakon c onn ector s on th eir pro ducts for ye ars, so c han ces you a re re ady to us e the
Speak on connect ion. Wi th Sp eakon c onn ector s, you can con nect st rai ght fro m the a mplif ier to the spe aker. The Spe ako n conne ctor used on t his
ampli fier meets a ll know n saf ety reg ula tions . Once wired c orrec tly, t he co nnect or ca nnot be p lugged in ba ckwar ds, c ausin g the type of in verted
polar ity situat ions th at ha ve beco me co mmon wi th banana ho okups . Thi s con necti on will prov ide a saf e, se cure an d rel iable m ethod of con necti ng
your sp eakers to yo ur new am pli fier. You ca n purchase t he Spea kon N L4FC co nne ctors f rom your loc al audi o dea ler.
UNiKA PL-300/PL-500
Introduction Front Panel Rear Panel Speakon Assembly Operating Modes Protection SpecificationsSet Up
Page 8
Figure 14
+
+1
-1
-2
+2
+
+1
-1
-2
+2
4-Conductor Speaker Cable
Brass Inserts
Figure 10
A EDCB
Figure 11
Figure 13
Figure 12
pag e 7
You wi ll need a pair o f Neutr ik Sp eakon N L4F C conne ctors. You wil l also ne ed
high- quality tw o or four c ond uctor S pea kon cab le, a pair of ne edle- nos ed plie rs
and a 1.5 -mm Allen k ey to assemb le the Sp eak on conn ect ors to yo ur speaker
wire. To assem ble the N eut rik Spe ako n NL4FC c onnector, c omple te th e follo win g
steps :
1. Stri p back 3/4-i nch of th e cab le casi ng. S trip off 1/4 -inch from t he end of e ach o f
the con ductors do wn to bar e wir e, and in ser t the bra ss fitting s ( Figur e 10 ).
2. Slid e the wire ten sione r (D) a nd the Sp eak on coup ler (E) thro ugh the c abl e end.
See Fig ure 11.
3. Inse rt each wire w ith the b ras s fitti ngs i nto the t op of approp riate s lot o f the
conne ctor inser t (B) as sh own i n Figur e 12. U se a 1.5- mm Allen key to t ighte n
the con nection ( Fi gure 13 ) .
4. Be sur e to properl y match t he po sitiv e (+) a nd nega tive (-) lea ds of eac h wir e (
Figur e 14 ).
5. Slid e the connec tor ins ert ( B) into t he co nnect or housing ( A), mak ing s ure tha t
the lar ge notch on th e outer e dge o f the ins ert l ines up w ith the larg e groov e on
the ins ide of the con necto r hou sing. The in sert shoul d slide e asi ly thro ugh t he
housi ng.
SPEAKON ASSEMBLY:
UNiKA PL-300/PL-500
Introduction Front Panel Rear Panel Set Up Operating Modes Protection SpecificationsSpeakon Assembly
Page 9
OPERATING MODES
STEREO OPERATION: Connect your inputs into channel one and channel 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.
pag e 8
Figure 15 Stereo Mode Connection
STEREO FULL RANGE SPEAKERS
SPEAKER IMPEDANCE MINIMUM 4 OHM
PL-500 Rear Panel
10
A
M
P
CH1 INPUTS
CH2 INPUTS
INPUT IMPEDANCE
40K BALANCED
20K UNBALANCED
SPEAKON
1/4 PHONE
1+ 1-
POS NEG
TIP
SLEEVE
OUTPUT CONNECTOR PINS
CH1 OU TPUTS
+
+
LOCK
LOCK
CH2 OU TPUTS
AC INPU T
BREAK ER
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
Serial No.:
XLR
1/4
RCA
2
1
POS
TIP
TIP
SLEEVE
BARREL
INPUT CONNECTOR PINS
3
NEG
RING
WARNING:
TO PREVENT FIRE OR SHOCK
HAZARD. DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR
MOISTURE.
Negative (-) Lead
Positive (+) Lead
Negative (-) Lead
Positive (+) Lead
PROTECTION
1. SHORT CIRCUI T PROTECTION
The PL series com es with b uil t-in Ou tpu t Short C ircuit Pro tects . The O utp ut Shor t Cir cuit Pr otection p rotec ts th e
outpu t devices of t he ampl ifi er from s hor t circu its and stre ssful l oad s. If you r spe aker li nes shorte d, the am pli fier
autom atically d etect s thi s probl em an d disco ntinued op erati on fo r that ch ann el. If on e side of your a mplif ier b ecome s
short ed and goes in to prot ect m ode, th e oth er side w ill contin ue to ope rat e norma lly. C hannel out put dur ing t he “Sho rt
Circu it Protect ion" wi ll be i nterr upt ed (i.e . no sound out put). S hor t Circu it Pr otect ion can usua lly be tr ace d back to t he
signa l output lin e (i.e. s pea ker lin e). C heck th e line from th e outpu t ter minal o f the a mplif ier to the spe aker. If t his l ine
is good , check the in terna l spe aker co nne ction s and compon ents. A sho rt ci rcuit w ill u suall y be traced to a b ad cabl e
or a bad sp eaker comp onent a nd is r arely t rac ed to the a mplifier i tself .
UNiKA PL-300/PL-500
Figure 16
Introduction Front Panel Rear Panel Set Up Speakon Assembly SpecificationsOperating Modes Protection
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pag e 9
UNiKA PL-300/PL-500
2. OVERHEATING PROTECTI ON
The PL series amp lifie rs ar e coole d by Si ngle 2- speed fan, a nd alwa ys ar e kept at m ode rate te mperatur e. Duri ng lo w level o utp ut the fa ns run at
norma l speeds. Du ring hi gh ou tput an d as he at rais es, (excee ding 50 °C. ), the fa ns wi ll run at h igher spee ds to aid t he co oling p roc ess. If t he
heats ink temper ature e xce eds 91° C., t he ampl ifier will m ute unt il th e ampli fie r cools d own. When th e ampli fie r cools b elo w 90°C. , the amplif ier wil l
retur n to normal op erati ons . Be sure n ot to o perat e your ampli fier be low t he mini mum l oad rat ings to redu ce the ri sk of o verhe ati ng prob lems.
3. DC CIRCUIT PRO TECTION
If dang erous subs onic fr equ encie s or di rect cu rrent (DC) i s detec ted i n the amp lif ier's o utput, the u nit wil l act ivate i ts DC /low- frequenc y prote cti on
circu itry and the a mplif ier w ill be mu ted .This p rotects th e loads a nd pr event s osc illat ions. The un it wi ll resu me no rmal op eration wh ile the a mpl ifier
no long er detects d anger ous l ow-fr equ ency or D C output.
Introduction Front Panel Rear Panel Set Up Speakon Assembly Operating Modes SpecificationsProtection
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pag e 10
PL-SERIES AMPLIFIER SPECIFICATIONS
Output Power 2 Ch Driven
4ohms/8ohms
1Khz 1% THD
Maximum RMS Voltage
Input Sensitivity
Amplifier Gain
Frequency Response
(@Rated Output Power 8ohms)
Total Harmonic Distortion
IMD-SMPTE (60Hz, 6KHz)
Crosstalk
Slew Rate
Damping Factor
Signal To Noise Ratio
Power Consumption
@ Maximum Output Power 8ohms
Output Circuitry
Fan
460Wrms/300Wrms
48.9V
0.775V
38.8dBu
<0.04%
<0.004%
>-55dBV 0dBV=0.775V
>15v/us
>100
>90dB
846W
7.69A@110V
CLASS AB
Single 2-Speed Fan and Heatsink
20Hz - 20KHz ±0.5dB
UNiKA PL-300/PL-500
650Wrms/500Wrms
63V
1.2V
38.1dBu
<0.02%
<0.008%
>-70dBV 0dBV=0.775V
>52v/us
>100
>90dB
1457W
13.24A@110V
CLASS H
Single 2-Speed Fan and Heatsink
20Hz - 20KHz ±0.5dB
PL-300 PL-500
Introduction Front Panel Rear Panel Set Up Speakon Assembly Operating Modes Protection Specifications
Page 12
Pro fes sio nal Po wer Am pli f ie rs
UNiKA
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