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 AHUJEA PA AMPLIFIERS
1000W RMS
PA-10000
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e Thankyou for purchasingthe AHUJA PA Amplifier.
e Please read this manual thoroughly before making connections and turning on the power. Following
the instructions in this manual will enable you to obtain optimum performance from your new
AHUJA PA Amplifier.
e Please retain this manual for future reference.
* Safety Instructions
Read the Instructions: Please read all the instructions in this section carefully before installation or use of the
product. All the safety instructions must be followed.
Retain the Instructions: Please retain this Instruction Manual for future reference.
may be sufficient to constitute a risk of electric shock. External wiring to any terminal marked with this
1 This symbol, wherever it appears, alerts you to the presence of uninsulated hazardous voltage that
symbol must be done by a trained and instructed person only.
This symbol, wherever it appears adjacent to a component, alerts you that the concerned componen
can only be replaced by another of the exact same specifications.
WARNING
e To reduce the risk of electric shock, do not remove the top cover. No user serviceable parts inside. Refer all
servicing to qualified personnel only.
e Before replacing any fuse, make sure the set is switched off and disconnected from the AC mains or any other
power source. Replace a fuse only with another of exactly same specification.
CAUTIONS
Water & Moisture: To reduce the risk of fire or electrical shock, do not expose this set to rain or moisture. Do not
use this set near water or in a wet location. Do not keep any object filled with liquid, such as a vase, on top of this set.
Do notinsert or remove the AC mains plug with wet hands.
Power Source: The voltage & frequency of the AC mains supply, and the voltage of the external battery, (if
applicable) to which this set can be connected, is marked on the rear panel of the set. Do not connect this set to any
power source other than those specified on the rear panel.
Power Cord Protection: Do not cut, kink, damage or modify the AC power cord supplied with this set. Keep the
AC power cord away from heaters and harmful chemicals. Do not keep any heavy object on the power cord.
Operation on Generator: When operating this set on a generator, make sure the set is switched off till the
generator voltage has stabilized.
Ventilation: This set should be situated so that its location or position does not interfere with its proper ventilation.
Do not cover the ventilation holes / slots. Do notinsert or drop anything into the ventilation holes / slots.
Stability: This set must be kept in a stable and flat horizontal position, and never in a tilted position. Do not place this
set on an unstable stand, tripod, bracket or mount. Do not use attachments which are not supplied or explicitly
recommended by the manufacturer.
Cover Strip: The cover strip of the 100V / 70V audio output terminal strip, and of any other high voltage output
terminal strip, must be replaced after making connections. Failure to do so may result in exposure to hazardous
voltages.
Earthing: This set must be earthed properly before use. A wire from the Earth terminal on the rear panel must be
connected to electrical earth.
Cleaning: Disconnect this equipment from the AC mains and external battery before cleaning. Clean with a damp
cloth, but do not allow any liquid to enter the set. Do not clean with liquids or aerosols.
Exposure to Heat: Do not touch the heatsinks while the set is working.
SPA-10000
Contents Page No.
o Features/ General Description of Product ...o_..e-—=eoexm==m...2._2m2_ic022 um 0m=um_imemnmzNzCzNzNESA 4
o Front Panel Controls & Features (SPA-10000) .....2.222000000000 000 un sus m um nu 5
o Rear Panel Controls 8% Реабигез (5РА-10000). =. = = = = = к инининнинниннинининининнининия 6
o Interconnections. ...._e_-—em=nmmonaanmmnmmmnannmnznmEEZEEEEEEEEEREA 7
o Speaker Connection Guidelines ..........2222020000080000000ssum um mm mm m8 9
o Typical Applications .....eoéeeoe memmenmneemmnmneunmeieennnn mun ENEE DCZ 12
o Specifications . ....eoeeeenmmmnmmmnmmmnnnmnnnmoernemnmuuummnnnunmmamnE mA 15
3
SPA-10000
* Features/General Description of Product
SPA-10000
Designed for use in a wide variety of PA applications.
SPA-10000 is a 1000 Watts Booster Amplifier, which accepts input
signals of both 200mV & 1V. It has an input sensitivity selector switch
with the help of which it's input sensitivity can be altered to accept
preamp output or line outputs from other sources.
SPA-10000 has two jacks & one XLR connector. The input jacks or
XLR connector is used to feed an input signal into the amplifier while
the output jacks could be used to connect another Booster Amplifier to
it for higher power requirement.
SPA-10000 has 100V input facility, two pin terminal strip is used to
feed 100V input signal from output terminal strip (100V) of any other
amplifier to get full 1000W output from SPA-10000.
Box Speaker/ Driver Unit selector switch has been provided for
protecting the Driver Unit's diaphragm from unwanted low
frequencies. Since Box speakers can reproduce the full spectrum of
audio frequencies but Driver Units cannot reproduce very low
frequencies, the switch should be positioned to the Driver Unit side
when Driver Units, Horns and Column speakers are connected.
Circuit Protector Device in place of AC fuse & DC circuit breaker (MCB
type) have been provided, these safeguards the amplifier against
overload and short circuit.
Provision for automatic changeover from AC to Battery Operation
ensuring continuity of program has been provided.
Protection provided against the reverse polarity of Battery
connections.
Ease of operation, combined with service accessibility has been
optimized in the design.
* Front Panel Controls 8 Features (SPA-10000)
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BASS Control 6. OVERLOAD LED's
For attenuating or boosting the signal level of low
frequencies.
BOX SPEAKER / DRIVER UNIT Selector
Switch
TREBLE Control
For attenuating or boosting the signal level of
high frequencies.
POWER Switch
Push the top part of the knob to switch the 9.
amplifier ON. Push the bottom part of the knob to
switch the amplifier OFF.
POWER LED
This LED glows when the amplifier is switched
ON.
10.
This LED glows when the AC circuit protector
trips.
This LED glows when DC MCB trips.
RESET Button
This button pops out when the AC circuit
protector trips. Rectify the cause and press the
RESET button for resetting normal operation of
the amplifier.
LED Array
This indicates the output level of the amplifier.
MASTER Volume Control
For adjustment of the overall volume level from
the amplifier.
SPA-10000
* Rear Panel Controls & Features (SPA-10000)
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11. DC MCB (Rating 32AMP 130V DC) 16. Output Jack Socket
12.
13.
14.
15.
This switches off when excessive current flows
due to overload or short circuit. Rectify the fault &
switch on this MCB for normal operation of
amplifier. Fault indication is given by overload
LED (No.7) in the front panel.
3 CORE AC MAINS CABLE WITH PLUG
EARTH Terminal
SPEAKER Terminal Block (70V, 100V)
For connecting speakers with 100V line matching
transformers.
SPEAKER Terminal Block (2 ohm and 4 ohm)
For connecting low impedance speakers.
17.
18.
19.
For connecting to another booster amplifier to
obtain combined higher power output.
Input Jack Socket
For connecting balanced input either through XLR
connector or stereo jack, connected in parallel
External mixer, CD player etc., can be connected
as an input source.
Input Sensitivity Selector Switch.
100V Input Terminal Strip
100V output any other amplifier can be connected
to this amplifier to get 1000W output in long line
installation. Input selector switch must be kept at
1V position.
Caution
® The equipment must be earthed properly before operating it to avoid electric shock. A wire from the Earth
Terminal must be connected to electrical earth for safe operation.
SPA-10000
FRONT PANEL -
e Interconnections
The amplifier can be placed as a tabletop unit. The amplifier should be
situated so that its location or position does not interfere with its proper
ventilation.
The amplifier must be powered through an AC earthed mains outlet.
All connections must only be carried out or changed with the amplifier
switched OFF.
The amplifier may be operated from a DC supply of 48 Volts (four car
batteries connected in series).
To avoid loud switching noise, always switch ON the Power amplifier
after all other units of the audio system have been switched ON. After
operation switch it OFF first, then the other units.
The connection diagrams that follow display the typical types of input
sources (Keyboard, Cassette Player, Mixer, CD Player etc.) and
speakers (Wall, Ceiling, Box, Horn, Column) which can be connected
to the amplifier. For correct connections and operation check the
specifications of the connected equipment.
SPA-10000
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SPA-10000
REAR PANEL - SPA-10000
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CD PLAYER
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SPA-10000 ;
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1600VA
COM 70V
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130V DC
MICROPHONES
PA AMPLIFIER
PROGRAM SPEAKERS
PA POWER ANPLIFER
HORN
COLUMN () SPEAKERS BOOSTER AMPLIFIER PA MIXER
SPEAKERS WITH 100V
WITH 100V LMT
LMT 0
WALL CEILING
SPEAKERS SPEAKERS
WITH 100V WITH 100V
LMT LMT
SPA-10000
COM 20 40
COM 20 40
e Speaker Connection Guidelines
SPA-10000 is high-powered amplifier. Therefore it is very important that correct loudspeaker connections are made
to avoid damage to the amplifiers or speakers.
Low Impedance Speaker Connections
7 Box type Speakers can be directly connected to Com-2©
com 20 49 /4Q Terminal Strip.
SD @ The Box Speaker / Driver Unit switch must be kept at Box
Speaker position. If by mistake the switch remains in
Driver Unit position the quality of sound will not be rich
and natural.
No Driver Units / Horn Speakers / Column Speakers
(with 100V LMT) should be connected to Com-202/40.
SAX-150DX SAX-150DX SAX-150DX SAX-150DX SAX-150DX SAX-150DX SAX-150DX SAX-150DX Co nn ecti n g E i 9 h t SAX- 1 5 0 DX S pea ke rs
The Eight SAX-150DX Speakers (each speaker can
handle 150W of power) should be wired in a parallel-
series combination as shown in figure. Two groups of
four speakers each are connected in parallel and then
the groups are connected in series. The resulting
impedance will be 40. The speaker system should be
connected to the 4 tap ofthe amplifier.
120DX
Connecting Ten SRX-120DX Speakers
The Ten SRX-120DX speakers (each speaker can
handle 100W of power) should be connected in parallel -
series combination as shown in figure. Two groups of five
speakers each are connected in parallel and then the
groups are connected in series. The resulting
impedance would be 3.20. Thus they should be
connected tothe 2Q) tap of the amplifier.
ea
Connecting Four SAX-300DX Speakers
The Four SAX-300DX Speakers (each speaker can
handle 300W of power) should be wired in parallel shown
in figure. The resulting impedance will be 20. The
speaker system should be connected to the 20 tap of
the amplifier.
SAX-300DX
SAX-300DX
SAX-300DX
SAX-300DX
Resultant Impedance = (8 ohm/4) = 2 ohm
IMPORTANT
When Box speakers are connected to COM-2Q2 / 4QQ Terminal Strip NO Speakers / Driver Units with 100V
LMTs should be connected to the Red Terminal Strip marked COM-70V/100V.
Box Speakers should be connected only to either COM-2Q2 or COM-4Q) terminals as illustrated above but
never to more than one set of terminals.
SPA-10000
COM 20 40
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SRX-500
SRX-500
SRX-500
Resultant Impedance = (8 Ohm / 3) = 2.66 Ohm
COM
70V
100V
SPA-10000
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Connecting Three SRX-500 Speakers
The Three SRX-500 speakers (each speaker can handle
400W of power) should be wired in parallel as shown in
figure. The resulting impedance of the speaker system is
2.660. Thus they should be connected to the 20 tap of
the amplifier.
High Impedance Speakers or Speakers Using A
100V Line Matching Transformer
Only Driver Units / Horn Speakers / Column Speakers
with 100V Line Matching Transformers are to be
connected to COM-70V / 100V Terminal Strip.
The Box Speaker / Driver Unit switch must be kept at
Driver Unit position.
When any of the above speakers are connected to the
COM-70V / 100V Terminal Strip then NO Box speakers
should be connected to the COM-20Q /4Q Terminal Strip.
The power drawn from the amplifier should not exceed
1000 Watts.
Connecting Hundred Driver Units with 100V LMT
100 Driver Units with 100V Line Matching Transformer
connected at 10 Watts tap can be operated.
Connecting a Combination of Driver Units and
Column Speakers with 100V LMT
10
60 Driver Units with 100V LMT at 10 Watts and 80
Column Speakers with 100V LMT at 5 Watts can be
connected together. The power drawn from the amplifier
should not exceed 1000 Watts.
Connecting a combination of Wall and Ceiling
Speakers with 100V LMT
130 Ceiling Speakers with 100V LMT at 4 Watts and
80 Wall Speakers with 100V LMT at 6 Watts can be
connected together. The power drawn from the amplifier
should not exceed 1000 Watts.
Use of 70 Volt Line
A loudspeaker / Driver Unit with its LMT adjusted to the
15W tap, when connected to COM and 100V terminals
on the Amplifier's Terminal Strip will draw 15W from the
Amplifier but when the same is connected to COM and
70V it will only draw half power i.e. 7.5W. A good use of
70V line tap can be made In installations where large
number of Speakers / Driver Units are to be installed for
more even distribution of sound.
Correct Phasing of Loudspeakers
When two or more Speakers / Units are installed in the
same area and are facing the same direction, it is
essential that their cones / diaphragms act in unison.
Otherwise the sound level of one speaker will be
cancelling the sound level of the other. To avoid any
mistake, the terminals of Box speakers and the Driver
Units are marked '+' 8: '-'. Always connect the COM of the
Amplifier to '-' of speaker & 2Q2 /4Q) of the amplifier to the
'+' of the speakers.
In case of LMT's the COM of all the LMT's should be
connected to the COM of the red strip terminal of the
amplifier and the power tap to 100V line as shown in
figure.
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IMPORTANT
Impedance) Tap.
more than one set of terminals.
e When 70/100 Volt line is being used, no speakers / driver units should be connected to 20 / 40 (Low
e Loudspeaker / driver unit should be connected to either COM-100V or COM-70V terminals, but never to
SPA-10000
11
e Typical Applications
Connecting A Cassette Player To One SSA-10000 and one SPA-10000 To Get A2000W Mono System
1.
4 x SAX-300DX
BOX SPEAKERS
+ +
Connect the pre-out of Cassette Player to the Aux. input jack of the
Amplifier SSA-10000 using a patch-cord with 74" phone plugs at both
ends.
The Pre out of SSA-10000 should be connected to the input jack of the
SPA-10000 (BOOSTER). The sensitivity switch of the SPA-10000 should
be at200mV.
In this manner the Cassette Player will feed both the amplifiers creating a
2000W output system.
Loudspeaker connections to both the amplifiers should be done
independently. Each of the amplifiers can be connected to either Box type
speakers or to speakers using the 100V LMT but NEVER to both together.
Speaker system impedance should be matched to the output impedance
of the amplifier and thus should be connected to the corresponding tap of
the amplifier.
When connecting box speakers to an amplifier the Box Speaker / Driver
Unit switch should be set to the Box Speaker side and when connecting
driver units, wall, ceiling or column speakers with 100V LMT, the switch
should be turned to the Driver Unit side.
When speakers with 100V LMT are used, total power drawn should not
exceed 1000W from the each amplifier.
Finally when operating the system, the Bass 8 Treble controls of the
individual amplifiers can be adjusted to give optimum tonal quality of
sound to suit the system requirements.
This kind of system is ideal where both high and low impedance speakers
are being used and the Cassette Player does not have its own Bass and
Treble controls.
AUX-3 az
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SSA-10000
MADE IN INDIA
CASSETTE PLAYER
50 Driver Units with
100V LMT at 20 Watts
SPA-10000
BOOSTER AMPLIFIER
AHUJA
SPA-10000
12
Connecting One SSA-10000 And Two SPA-10000 For Making A 3000W Mono System
SPA-10000
1.
Connect Microphones and other Program Sources to the input jacks of
the MASTERAMPLIFIER, which is the SSA-10000.
Connect the Line-Out of the MASTER AMPLIFIER to the input jack of the
first SPA-10000 (BOOSTERA) using a patch-cord with 74" phone plugs at
both ends. The sensitivity switch next to the input & output jacks should be
towards 1V.
The output jack of BOOSTER A should be connected to the input jack of
the second SPA-10000 (BOOSTER B). The sensitivity switch of the
second booster should also be at 1V.
In this manner the inputs connected to the MASTER AMPLIFIER will feed
all the three amplifiers creating a 3000W output system.
Loudspeaker connections to each of the five amplifiers should be done
independently. Each of the amplifiers can be connected to either Box type
speakers orto speakers using the 100V LMT but NEVER to both together.
Speaker system impedance should be matched to the output impedance
of the amplifier and thus should be connected to the corresponding tap of
the amplifier.
When connecting box speakers to an amplifier the Box Speaker / Driver
Unit switch should be set to the Box Speaker side and when connecting
driver units, wall, ceiling or column speakers with 100V LMT, the switch
should be turned to the Driver Unit side.
When speakers with 100V LMT are used, total power drawn should not
exceed 1000W from each ofthe amplifiers individually.
Finally when operating the system, any adjustments in the tonal quality of
the sound if required can be made from the MASTER AMPLIFIER.
(Refer to page 14 for illustration)
13
Connecting One SSA-10000 And Two SPA-10000 For Making A 3000W Mono System
me DIGITAL]
CASSETTE
PLAYER
CD PLAYER
MASTER AMPLIFIER
4 x SAX-300DX BOX SPEAKERS ==
пни
SSA-10000
+ + +
LINE IN
MICROPHONES
com 70V 100
AMPLIFIER |A
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SPA-10000
DC MCB
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50
100 Driver Units with
100V LMT at 10 Watts
DC MCB
200 COLUMN SPEAKERS with
100V LMT at 5Watts
14
SPA-10000
* Specifications
Model SPA-10000
Power Output 1000W RMS at 10% THD (Rated)
850W RMS at 5% THD
800W RMS at 2% THD
Output Regulation
< 2 dB no load to full load at 1kHz
Input Channels
200mV / 100kQ
1V / 50KQ
100V / 100kQ
Frequency Response
50 — 15000Hz +3dB
S/N Ratio
60dB
Tone Controls:
Switch at Box Speaker Position
Switch at Driver Unit Position
Bass: +8dB at 100Hz Treble: +8dB at 10kHz
Bass: -8 at 100Hz Treble: +8dB at 10kHz
Output Taps for
Speaker Matching
2 8 40 (for direct connections)
70 8 100V Line (for use with LMT)
Power Supply AC: 220 - 240V 50/60Hz DC: 48V (4 x 12V Car Battery)
Protection AC: 10Amp. Circuit Protector DC: 32Amp. MCB
Rated AC Power Consumption 1600VA
DC Power Consumption 12A
Dimensions
W540 x H185 x D510 mm
Weight
40 Kg. approx.
* Design and Specifications are subject to change without notice owing to continuous product upgradation.
* Technical specifications are subject to production tolerances.
15
SPA-10000
AHUJA RADIOS - 215, Okhla Industrial Estate, New Delhi - 110 020, INDIA
Tel.: +91-11-20831549, 41612474 Fax: +91-11-26847287
E-mail: ahuja@ahujaradios.com, admin@ahujaradios.com Website: www.ahujaradios.com
Design and Specifications are subject to change without notice owing to continuous
product up-gradation
Technical specifications are subject to production tolerances.
We cannot be held responsible for printing errors, should they occur.
RHUJR is a registered trademark of Ahuja Radios in India and other countries.
© Copyright Ahuja Radios, 2013. All rights reserved. Any unauthorized reproduction or
use of logos, images or design elements is strictly prohibited by law.
No part of this compilation may be reproduced in any manner or translated without
written permission.
@
HHUJR
E.&O.E. 1K/01/13
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