Peavey ICS 4200 User Manual

ICS™4200 4-Channel Power AmplifierUser Manual

2

Intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

Intended to alert the user of the presence of important operating and maintenance (servicing)
instructions in the literature accompanying the product.

CCAAUUTTIIOONN::

Risk of electrical shock — DO NOT OPEN!

CCAAUUTTIIOONN::

To reduce the risk of electric shock, do not remove cover. No user serviceable parts inside.

Refer servicing to qualified service personnel.

WWAARRNNIINNGG::

To prevent electrical shock or fire hazard, this apparatus should not be exposed to rain or
moisture‚ and objects filled with liquids‚ such as vases‚ should not be placed on this apparatus. Before
using this apparatus‚ read the operating guide for further warnings.

Este símbolo tiene el propósito, de alertar al usuario de la presencia de “(voltaje) peligroso” sin
aislamiento dentro de la caja del producto y que puede tener una magnitud suficiente como para
constituir riesgo de descarga eléctrica.

Este símbolo tiene el propósito de alertar al usario de la presencia de instruccones importantes sobre la
operación y mantenimiento en la información que viene con el producto.

PPRREECCAAUUCCIIOONN::

Riesgo de descarga eléctrica ¡NO ABRIR!

PPRREECCAAUUCCIIOONN::

Para disminuír el riesgo de descarga eléctrica, no abra la cubierta. No hay piezas útiles

dentro. Deje todo mantenimiento en manos del personal técnico cualificado.

AADDVVEERRTTEENNCCIIAA::

Para prevenir choque electrico o riesgo de incendios, este aparato no se debe exponer a
la lluvia o a la humedad. Los objetos llenos de liquidos, como los floreros, no se deben colocar encima
de este aparato. Antes de usar este aparato, lea la guia de funcionamiento para otras advertencias.

Ce symbole est utilisé dans ce manuel pour indiquer à l’utilisateur la présence d’une tension dangereuse
pouvant être d’amplitude suffisante pour constituer un risque de choc électrique.

Ce symbole est utilisé dans ce manuel pour indiquer à l’utilisateur qu’il ou qu’elle trouvera d’importantes
instructions concernant l’utilisation et l’entretien de l’appareil dans le paragraphe signalé.

AATTTTEENNTTIIOONN::

Risques de choc électrique — NE PAS OUVRIR!

AATTTTEENNTTIIOONN::

Afin de réduire le risque de choc électrique, ne pas enlever le couvercle. Il ne se trouve à
l’intérieur aucune pièce pouvant être reparée par l’utilisateur. Confiez I’entretien et la réparation de
l’appareil à un réparateur Peavey agréé.

AAVVIISS::

Dans le but de reduire les risques d'incendie ou de decharge electrique, cet appareil ne doit pas
etre expose a la pluie ou a l'humidite et aucun objet rempli de liquide, tel qu'un vase, ne doit etre pose
sur celui-ci. Avant d'utiliser de cet appareil, lisez attentivement le guide fonctionnant pour
avertissements supplémentaires.

Dieses Symbol soll den Anwender vor unisolierten gefährlichen Spannungen innerhalb des Gehäuses
warnen, die von Ausreichender Stärke sind, um einen elektrischen Schlag verursachen zu können.

Dieses Symbol soll den Benutzer auf wichtige Instruktionen in der Bedienungsanleitung aufmerksam
machen, die Handhabung und Wartung des Produkts betreffen.

VVOORRSSIICCHHTT::

Risiko — Elektrischer Schlag! Nicht öffnen!

VVOORRSSIICCHHTT::

Um das 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
qualifiziertem Fachpersonal durchführen lassen.

WWAARRNNUUNNGG::

Um elektrischen Schlag oder Brandgefahr zu verhindern, sollte dieser Apparat nicht Regen
oder Feuchtigkeit ausgesetzt werden und Gegenstände mit Flüssigkeiten gefuellt, wie Vasen, nicht auf
diesen Apparat gesetzt werden. Bevor dieser Apparat verwendet wird, lesen Sie bitte den
Funktionsführer für weitere Warnungen.

3

IIMMPPOORRTTAANNTT SSAAFFEETTYY IINNSSTTRRUUCCTTIIOONNSS

WWAARRNNIINNGG::

When using electrical products, basic cautions should always be followed, including the following:

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any of the ventilation openings. Install in accordance with manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers)
that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one
wider than the other. A grounding type plug has two blades and a third grounding plug. The wide blade or third prong is
provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet.

10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point
they exit from the apparatus.

11. Note for UK only: If the colors of the wires in the mains lead of this unit do not correspond with the terminals in your
plug‚ proceed as follows:

a) The wire that is colored green and yellow must be connected to the terminal that is marked by the letter E‚ the earth
symbol‚ colored green or colored green and yellow.

b) The wire that is colored blue must be connected to the terminal that is marked with the letter N or the color black.
c) The wire that is colored brown must be connected to the terminal that is marked with the letter L or the color red.

12. Only use attachments/accessories provided by the manufacturer.

13. Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a
cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

14. Unplug this apparatus during lightning storms or when unused for long periods of time.

15. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any
way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

16. Never break off the ground pin. Write for our free booklet “Shock Hazard and Grounding.” Connect only to a power
supply of the type marked on the unit adjacent to the power supply cord.

17. If this product is to be mounted in an equipment rack, rear support should be provided.

18. Exposure to extremely high noise levels may cause a permanent hearing loss. Individuals vary considerably in suscep­tibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise
for a sufficient time. The U.S. Government’s Occupational and Health Administration (OSHA) has specified the following
permissible noise level exposures:

Duration Per Day In Hours Sound Level dBA, Slow Response

890
692
495
397
2100

1 1/2 102

1105

1/2 110

1/4 or less 115

According to OSHA, any exposure in excess of the above permissible limits could result in some hearing loss. Ear plugs or protectors to the
ear canals or over the ears must be worn when operating this amplification system in order to prevent a permanent hearing loss, if exposure
is in excess of the limits as set forth above. To ensure against potentially dangerous exposure to high sound pressure levels, it is
recommended that all persons exposed to equipment capable of producing high sound pressure levels such as this amplification system be
protected by hearing protectors while this unit is in operation.

SSAAVVEE TTHHEESSEE IINNSSTTRRUUCCTTIIOONNSS!!

4

IICCSS™™44220000 PPoowweerr AAmmpplliiffiieerr

The ICS™4200 is a 4-channel power amplifier designed for years of reliable‚ flawless operation under
rigorous use. This amplifier offers the sonic superiority and unsurpassed reliability for which Peavey is
famous‚ while remaining surprisingly compact. Advanced technology and extensive protection circuitry
allow operation with greater efficiency into difficult loads and power conditions. The SPS™(Speaker
Protection System) circuitry ensures trouble-free operation into loads as low as 4 Ohms. This amplifier
is ideal for paging systems, foreground and background music distribution as well as other
applications that may require multiple zones. Each channel delivers 200 Watts of power!

Although the ICS 4200 amplifier is quite simple to operate and is housed in ultra-strong steel chassis,
improper use can be dangerous. This amplifier is very high-powered and can put out high voltages
and sizable currents. Always use safe operating techniques when operating this amplifier.

·· 44--cchhaannnneell ppoowweerr aammpp ssyysstteemm

—

200 WATTS RMS per channel

·· LLooww ZZ ((44 oorr 88 OOhhmmss)) oorr 7700 VV oouuttppuutt

—selectable in 2-channel pairs

·· DDeeddiiccaatteedd EEuurroo--ttyyppee‚‚ eelleeccttrroonniiccaallllyy--bbaallaanncceedd iinnppuutt ccoonnnneeccttoorrss

·· TTwwoo iinnppuutt ppoorrttss:: aacccceeppttss MMMMAA

™™

pplluugg--iinn iinnppuutt mmoodduulleess

—dip-switch selectable to any channel

·· FFrroonntt ppaanneell ddeetteenntteedd lleevveell ccoonnttrroollss

—with security cover

·· FFrroonntt ppaanneell AACC ppoowweerr sswwiittcchh//cciirrccuuiitt bbrreeaakkeerr

·· SShhoorrtt cciirrccuuiitt aanndd tthheerrmmaall pprrootteeccttiioonn cciirrccuuiittrryy

·· RRuuggggeedd‚‚ rraacckk--mmoouunntt ddeessiiggnn

—

2U rack space

·· 22--ssppeeeedd ffaann--ccoooolleedd ddeessiiggnn

·· FFrroonntt ppaanneell LLEEDD iinnddiiccaattoorrss ppeerr cchhaannnneell::

signal & clip

UUnnppaacckkiinngg

Upon unpacking, inspect the amplifier. If you find any damage, notify your supplier immediately. Only
the consignee may institute a claim with the carrier for damage incurred during shipping. Be sure to
save the carton and all packing materials. Should you ever need to ship the unit back to Peavey
Electronics, one of its offices, service centers, or the supplier, use only the original factory packing. If
the shipping carton is unavailable, contact Peavey to obtain a replacement.

MMoouunnttiinngg

The ICS 4200 amplifier will mount in standard 19" racks.

SSeeccuurriittyy CCoovveerr

A security cover is provided to prevent inadvertent level adjustments. It is designed to permit
monitoring of the various LEDs without removal. To remove the cover‚ simply remove the Phillips-head
mounting screw.

CCoooolliinngg RReeqquuiirreemmeennttss

The ICS 4200 amplifier uses a forced-air cooling system to maintain a low, even operating
temperature. Air is drawn into the amplifier via a fan located in the back of the unit and courses
through the cooling fins of the tunnel-configured channel heat sinks. The air then exhausts through
the front panel slots. If the heat sinks get too hot‚ a sensing circuit will activate the protective muting
system to protect the amplifier. When the internal temperature reaches a safe level‚ the amplifier will
automatically return to normal operation. It is important that both the front and rear of the unit have
enough space to allow the cooling air to enter and escape. If the amp is rack mounted, do not use
doors or covers on the front of the rack; the intake air must flow without resistance. If you are using
racks with closed backs, make sure that there is one (1) standard rack space opening for every three
mounted power amplifiers. If not rack-mounted‚ allow 6" of clearance on all sides.

EENNGGLLIISSHH

FFeeaattuurreess

DDeessccrriippttiioonn

5

OOppeerraattiinngg PPrreeccaauuttiioonnss

Make sure the mains voltage is correct and is the same as that printed on the rear of the amplifier.
Damage caused by connecting the amplifier to improper AC voltage is not covered by any warranty.

NNoottee:: AAllwwaayyss ttuurr nn ooffff aanndd ddii ssccoonnnn eecctt tthhee aa mmpplliiff iiee rr ff rroomm mmaaiinnss vvoollttaaggee bbeeffoorree mmaakkiinn gg
aauuddiioo ccoonnnneeccttii oonnss .. AAllssoo,, aass aann eexxttrraa pprreeccaauu ttiioonn,, hhaavv ee tt hhee aatttteennuuaattoorrss ttuurrnneedd ddoowwnn
dduurriinngg ppoowweerr--uupp..

It is always a good idea to have the gain controls turned down during power-up to prevent speaker
damage if there is a high signal level at the inputs. Whether you buy or make them, use good-quality
connections, input cables and speaker cables, along with good soldering technique, to ensure trouble­free operation. Most intermittent problems are caused by faulty cables.

Consult the Wire Gauge Chart (below) to determine proper gauges for different load impedances and
cable lengths. Remember that cable impedance robs amplifier power in two ways: power lost directly to
resistance (I2R loss), and by raising the total load impedance.

WIRE GAUGE CHART

Cable Length

(In Feet)

Stranded Wire Gauge

(AWG)

Power Loss into

8 Ohms (%)

Power Loss into

4 Ohms (%)

Power Loss into

2 Ohms (%)

5 18 .79 1.58 3.16

16 .50 1.00 2.00

14 .31 .62 1.24

12 .20 .40 .80

10 .125 .25 .50

10 18 1.58 3.16 6.32

16 1.00 2.00 4.00

14 .62 1.25 2.50

12 .40 .80 1.60

10 .25 .50 1.00

40 18 8.00 12.60 25.20

. 16 4.00 8.00 1.60

14 2.50 5.00 10.00

12 1.60 3.20 6.40

10 1.00 2.00 4.00

8 .625 1.25 2.50

80 16 8.00 16.00 32.00

14 5.00 10.00 20.00

12 3.20 6.40 12.80

10 2.00 4.00 8.00

6

FFrroonntt PPaanneell

((11)) PPoowweerr IInnddiiccaattoorr

The green LED indicates AC power is supplied to the unit‚ the power switch is on and the unit is
functional with no faults. If the amplifier has a thermal fault condition‚ this LED will not
illuminate.

((22)) SSiiggnnaall IInnddiiccaattoorrss

Yellow LEDs indicate signal presence at that specific channel output. Identical on each channel.

((33)) CClliipp ((SSPPSS™™)) IInnddiiccaattoorrss

Any time a channel is driven into hard, continuous clipping, the SPS circuit will automatically
reduce the channel gain to a level just slightly into clipping, guarding the speakers against the
damaging high power continuous square waves that may be produced. Situations that may
activate the SPS circuit include uncontrolled feedback, oscillations, or an improper equipment
setting or malfunction upstream from the amplifier. On the ICS™4200, normal program transients
will not trigger SPS; only steady, excessive clipping will. The LEDs will illuminate red when SPS
circuitry is active for each channel amplifier.

((44)) IInnppuutt LLeevveell CCoonnttrroollss

These controls adjust the signal level to the power amplifier inputs. Maximum input sensitivity is
achieved at the fully clockwise setting. These controls are detented to allow the input sensitivity
of the channels to be closely matched. This is essential in the bridged-output mode. See MODE
CONFIGURATION below.

((55)) AACC PPoowweerr SSwwiittcchh//CCiirrccuuiitt BBrreeaakkeerr

The ICS™4200 amplifier has a combination AC switch/circuit breaker on the front panel. If the
switch shuts off during normal use, push it back to the ON position once. If it will not stay on, the
amplifier needs servicing.

WWaarrnniinngg:: TThh ee ppoowweerr sswwiittcchh ddooeess nnoott bbrreeaakk bbootthh ssiiddeess ooff tthhee lliinn ee aanndd uu nnddeerr
cceerrttaaiinn ccoo nnddiittiioonnss‚‚ hhaazzaarrddoouuss eenneerrggyy cc aann bbee pprreesseenntt wwhheenn tthhee sswwiitt cchh iiss ii nn tthhee
OOFFFF ppooss iittii oonn..

((66)) CCoooolliinngg AAiirr VVeenntt

The ICS 4200 is designed to operate under extreme conditions. Part of this design includes the
air vents visible from the front of the unit. These openings should never be blocked.

12 3 6 5

4

7

((77)) AACC MMaaiinnss PPoowweerr RReecceeppttaaccllee

This is a standard IEC power connector. An AC mains cord having the appropriate AC plug and ratings
for the intended operating voltage is included in the carton. The mains cord should be connected to
the amplifier before connecting to a suitable AC outlet.

AACC MMaaiinnss CCoorrdd

The mains cord supplied with the unit is heavy-duty‚ 3-conductor type with a conventional 120 VAC
plug with ground pin. Never break off the ground pin on any equipment. It is provided for your safety.
If the outlet used does not have a ground pin‚ a suitable grounding adapter should be used and the
third wire should be properly grounded.

((88)) CChhaannnneell AA//BB OOuuttppuutt SSeelleeccttoorr

(Low Z or 70 Volt)

This slide switch allows channels A and B of this amp to be configured for either conventional Low Z
or to a 70 Volt distribution loudspeaker system.

((99)) CChhaannnneell CC//DD OOuuttppuutt SSeelleeccttoorr

(Low Z or 70 Volt)

This slide switch allows channels C and D of this amp to be configured for either conventional Low Z
or to a 70 Volt distribution loudspeaker system.

((1100)) CChhaannnneell AA//BB OOuuttppuuttss

The outputs are screw-terminal type for channels A and B. Connect the loudspeaker system to the
respective positive and ground terminals.

((1111)) CChhaannnneell CC//DD OOuuttppuuttss

The outputs are screw-terminal type for channels C and D. Connect the loudspeaker system to the
respective positive and ground terminals.

((1122)) FFaann GGrriillll

A two-speed DC fan supplies cool air to the amplifier. This intake should never be blocked. The fan
automatically switches to high-speed when the unit requires additional cooling. When the amplifier is
relatively cool and at idle‚ the fan should operate at low speed. The fan should never stop unless the
amplifier is switched off or the AC mains power source is interrupted.

((1133)) CChhaannnneell IInnppuuttss

These removable “Euro” connectors allow for electronically-balanced input signals to be connected to
the system. Each input has a sensitivity of 1.4 V and low-end roll-off at 60 Hz.

((1144)) MMMMAA™™PPlluugg--iinn MMoodduullee PPoorrttss

Accepts two optional MMA™plug-in input modules. These modules should be selected by installation
requirements. For details‚ refer to the individual MMA Module Operation Guide.

CCaauuttiioonn:: MMMMAA PPlluugg--iinn MMoodduulleess sshhoouulldd nnoott bbee iinnsseerrtteedd oorr rreemmoovveedd wwhhiillee tthhee aammpplliiffiieerr iiss ttuurrnneedd oonn..

((1155)) MMoodduullee OOuuttppuutt ttoo CChhaannnneell SSeelleeccttoorrss

These DIP switches are used to route the outputs of the respective Module to the desired amplifier
channel(s). For a specific channel selection the DIP switch must be switched.

RReeaarr PPaanneell

1234

O

N

1234

O

N

7 10 12 13 14

MODULE 2 MODULE 1

8 9 11 15

8

IInnppuutt CCoonnnneeccttiioonnss

The Euro-style connectors are wired as: Pin 1 is positive; Pin 2 is negative; and Pin 3 is chassis ground.
Normally balanced inputs are wired using two-conductor shielded cable as shown in the following
diagram. For un-balanced (single-ended) inputs‚ the single conductor is wired to Pin 1; and the shield
is connected to Pins 2 & 3 as shown in the following diagram.

DDIIPP SSwwiittcchh SSeettttiinnggss

IInnppuuttss

IInnppuutt MMoodduulleess

9

The output of each module may be assigned to any channel and in any combination of channels. To
assign the output of Module 1 to an amplifier channel(s)‚ simply slide the appropriate switch in the upper
bank of switches to the ON position (right). Likewise‚ to assign the output of Module 2 to an amplifier
channel(s)‚ slide the appropriate switch in the lower bank of switches to the ON position (right).

When selecting these switches‚ caution should be taken to ensure the front panel channel level controls
are fully counter-clockwise or the amplifier is powered off. This will help prevent any damage to the
loudspeaker system if there are high signal levels at the module inputs.

CCaauuttii oonn:: MMMM AA™™pplluugg-- iinn mmoodduulleess sshhoouulldd nnoo tt bbee iinnsseerrtteedd oorr rreemmoovveedd wwhhiillee aammpplliiffiieerr iiss
ttuurr nneedd oonn..

AAtttteennuuaattiioonn iinn ddBB

The signal level for each input can be
attenuated by adjusting the 21-detent front
panel level control. The table at right shows
the amount of attenuation in dB for each
detent.

NNoottee:: AAtttteennuuaattiioonn aammoouunnttss sshhoowwnn
mmaayy vvaarryy ±±1100%%..

DETENT ATTENUATION

0

(fully CCW) -85.0

1 -58.0
2 -35.0
3 -26.0
4 -20.0
5 -16.0
6 -13.0
7 -11.5
8 -9.5
9 -8.5

10 -7.0

11 -5.8
12 -4.7
13 -3.9
14 -3.0
15 -2.2
16 -1.4
17 -0.65

18 -0.25

19 -0.03

20

(fully CW) 0.00

LLeevveell CCoonnttrroollss

10

MMOODDEE

CCOONNFFIIGGUURRAATTIIOONNSS

The inputs are configurable for three modes of operation and the outputs for two modes of operation.

IInnppuutt MMooddeess

The channel inputs can be connected in three different ways to achieve the following modes of
operation.

DDuuaall--DDuuaall MMoonnoo MMooddee

For Dual-Dual Mono operation‚ connect the inputs as shown below. In this mode‚ all four channels
operate independently of each other with their input attenuators controlling each respective input
level. As a result‚ a signal at the input of Channel A produces an amplified signal at the output of
Channel A. Likewise‚ a signal at the input of Channel B produces an amplified signal at the output of
Channel B‚ and so on. The loudspeaker load is connected to the amplifier output terminals matching
the positive loudspeaker connection with the positive output terminal. Furthermore‚ the negative
loudspeaker connection is matched with the negative output terminal. See OUTPUT MODES below.

PPaarraalllleell MMooddee

The figure below shows an example of parallel input connections. This mode sends the same signal
to each of the connected input channels without using a Y-cable. For example‚ connect the input
signal to Channel A input connector. Then‚ connect jumper wires from the positive (+) and negative (-)
terminals of the Channel A input connectors to the respective input terminals of Channel B. Both
channels then share the Channel A input signal but will operate independently. The loudspeaker
loads are connected as in the Dual-Dual Mono mode. See OUTPUT MODES below.

Any combination of parallel inputs may be configured in this mode‚ however‚ be aware of the output
mode settings.

11

BBrriiddggeedd MMooddee

A pair of amplifiers may be bridged together to make a single output with a power rating equal to the
sum of both channel power ratings at twice the load rating of a single channel. In other words‚
bridging two amplifiers rated for 200 Watts into 4 Ohms will produce 400 Watts into 8 Ohms. In
Bridged Mode‚ the channels operate at opposite polarity from each other so that one channel pushes
and the other pulls equally. This mode sends the input signal to one channel and the same signal
with its polarity reversed to the other channel in the pair (A/B or C/D). For example‚ connect the input
signal to Channel A input connector. Then‚ connect a jumper wire from the

ppoossiittiivvee ((++))

terminal of the

Channel A input connector to the

nneeggaattiivvee ((--))

terminal of the Channel B input connector. Likewise‚

connect a jumper wire from the

nneeggaattiivvee ((--))

terminal of the Channel A input connector to the

ppoossiittiivvee ((++))

terminal of the Channel B input connector. (See below.)

BBootthh

channel level controls (in

this example‚ A & B) MUST be used to control the signal level and

bbootthh

MUST be set at the same

position. The input level controls are detented to match these settings precisely.

NNoottee:: DD uuee ttoo tthhee uunniiqq uuee iinnppuu tt ttooppoollooggyy‚‚ tthhee mmoo dduullee ppoorrtt ss CCAANN NNOOTT bbee sseett uu pp ttoo
ddrriivvee tthh ee aammpplliiffiieerr iinn BBrrii ddggee dd MMooddee..

The loudspeaker load is connected only to the designated positive (+) output terminals of the bridged
channels. NEVER ground either side of the loudspeaker load cable when the amplifier is in Bridged
Mode as both sides are “hot.” If an output patch panel is used‚ all connections must be isolated from
each other and from the panel. In the Low Z output mode‚ the minimum nominal load impedance in
Bridged Mode is 8 Ohms; this is equivalent to driving both bridged channels at 4 Ohms. In the 70 V
output mode‚ the bridged output is 140 V and the minimum load impedance in Bridged Mode is 50
Ohms. Driving loads of lesser impedance may activate the protective muting system. See OUTPUT
MODES below.

NNoottee:: RReeggaarrddlleessss ooff ooppeerraattiinngg mm ooddeess‚‚ NNEE VVEERR ccoonnnneecctt tthhee aammpplliiffiieerr oouuttppuutt ss ttooggeetthheerr..
CCaauuttiioo nn:: OOuutt ppuutt vvoollttaaggeess ggrr eeaatteerr tthhaann 112200 VV RRMMSS aarree aavv aaiillaabbllee bbeettwweeeenn tthh ee bbrr iiddggeedd

ttee rrmmiinnaallss.. CCLLAASSSS 33 wwiirriinngg mmuu sstt bbee uusseedd iinn aaccccoorrddaannccee wwiitthh nnaattiioonnaall aanndd llooccaall cc ooddee ss
ttoo ccoonnnneecctt tthhee lloouu ddssppeeaakkee rr ssyysstteemm..

WWaarrnniinngg:: TThhee lloouuddssppeeaakkeerr oouuttppuutt ccoonnnneeccttiioonnss ooff tthhiiss aammpplliiffiieerr aarree hhaazzaarrddoouuss wwhheenn lliivvee
aanndd pprreesseenntt aa sshhoocckk hhaazzaarrdd wwhheenn tthheeyy aarree eenneerrggiizzeedd.. TTaakkee tthhee ffoolllloowwiinngg pprreeccaauuttiioonnss::

1. Do not touch any bare wires that are connected to the loudspeaker output connectors.

2. Use insulated loudspeaker cables and touch-proof connectors on the loudspeakers.

3. Do not attempt to make connections to the output connectors or the loudspeaker
connectors when the amplifier is turned on.

4. Double-check all connections and make sure there are no exposed wires or connectors
before turning the amplifier on.

5. Make sure there are no frayed-cables or wires and that all connections are tight and secure
every time before turning the amplifier on.

6. External wiring connected to these terminals requires installation by a trained person or
the use of ready-made leads or cords.

12

OOuuttppuutt MMooddeess

Each channel of the ICS™4200 can drive conventional low-impedance loudspeaker loads (≥4 Ohms) or
a 70 Volt constant-voltage audio distribution system directly. The setting of the output selector
switches determines the mode for each pair of outputs. One switch controls Channels A and B and
the other switch controls Channels C and D. Single channel selection is not possible. For proper cable
selection‚ see Wire Gauge Chart on page 5 of this manual.

LLooww ZZ

This mode allows each output of the channel pair to drive a 4 or 8 Ohm loudspeaker load. Use the
Bridged Mode to deliver the power of both channels to a single 8 Ohm load such as a subwoofer. Se
INPUT MODES above.

7700 VV

This mode allows each output of the channel pair to directly drive a 70 Volt constant-voltage audio
distribution system. Use the Bridged Mode to deliver the power of both channels to a 140 Volt
constant-voltage audio distribution system. See INPUT MODES above.

13

Example of a 70 Volt constant-voltage distribution system

14

Use of a 70 Volt matching transformer is possible with a 140 Volt system by connecting the tap that is
rated for 1/4 power or less of desired 70 Volt tap. For example‚ a ceiling loudspeaker with a 70 Volt
input tapped for 20 Watts is to be used with a 140 Volt constant-voltage system. The 140 Volt system
will need to be connected to the 5 Watt tap in order for the loudspeaker to produce 20 Watts. If a 5
Watt tap is not available‚ use the next lower tap.

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bbrriiddggeedd tteerrmmiinnaallss.. CCLLAASSSS 33 wwiirriinngg mmuu sstt bbee uusseedd iinn aaccccoorrddaannccee wwiitthh nnaatt iioonnaall aanndd
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IICCSS

™™

44220000 BBlloocckk DDiiaaggrraamm

MODULE 2

MODULE 1

60Hz
Low
Cut

SIGNALSPS

CH A INPUT

CH A LEVEL

CH A/B
OUTPUT

AMP A

CH B INPUT

SPS SIGNAL

CH B LEVEL

60Hz
Low
Cut

AMP B

70V Power Supply
Low Z Power Supply

CH C INPUT

60Hz
Low
Cut

SPS

SPS

70V Power Supply

CH D LEVEL

CH C/D
OUTPUT

CH D INPUT

SIGNAL

CH C LEVEL

SIGNAL

Low Z Power Supply

60Hz
Low
Cut

AMP D

AMP C

MODULE 1
ASSIGN

MODULE 2
ASSIGN

-

+

-

+

-

+

-

+

+

+

+

+

NC

NC

NC

NC

NC

NC

NC

NC

NC

NC

NC

NC

NC

NC

24V

15

SSPPEECCIIFFIICCAATTIIOONN LLOOWW ZZ MMOODDEE 7700 VVOOLLTT MMOODDEE

Rated Power (all channels driven)

Dual-Dual Mono & Parallel Modes

4 Ohms 200 Watts
8 Ohms 130 Watts
70 Volts 200 Watts

Minimum Load Impedance 4 Ohms 25 Ohms

Bridged Mode

8 Ohms 400 Watts
16 Ohms 260 Watts
140 Volts 400 Watts

Minimum Load Impedance 8 Ohms 50 Ohms

Frequency Response

+0‚ -1 dB @ 1 Watt 80 Hz–35 kHz 80 Hz–30 kHz
+0‚ -3 dB @ full power 60 Hz–30 kHz 60 Hz–15 kHz

THD

@ rated power‚ 1 kHz <0.05% <0.05%

IMD (SMPTE)

<0.10% <0.10%

Damping Factor

>140 (8 Ohms) >400

Input CMRR

-60 dB typ -60 dB typ

Voltage Gain

x20 (26 dB) typ x50 (34 dB) typ

Input Sensitivity

1.4 V (4 Ohms) typ 1.4 V typ

1.6 V (8 Ohms) typ

Input Impedance

20 k Ohms balanced 20 k Ohms balanced
10 k Ohms unbalanced 10 k Ohms unbalanced

Noise and Hum

-95 dB -95 dB

Below rated output‚ 22 Hz–22 kHz

16

ICS™4200

SPECIFICATIONS

17

Current Consumption (Multiply current by 0.5 for 230 V units)

Rated power 15.4 A (4 Ohms) 13.2 A

9.9 A (8 Ohms)

1/3 power 9.9 A (4 Ohms) 8.6 A

6.3 A (8 Ohms)

1/8 power 6.6 A (4 Ohms) 5.8 A

4.2 A (8 Ohms)

Idle 0.4 A 0.7 A

Thermal Emission

1/3 power 3147 BTU/hr (4 Ohms) 2614 BTU/hr

1990 BTU/hr (8 Ohms)

1/8 power 2364 BTU/hr (4 Ohms) 2036 BTU/hr

1500 BTU/hr (8 Ohms)

Controls

Front: 4 channel input signal attenuators‚ AC switch
Rear: 2 x 4 DIP switches for input module assign‚ 2 output mode switches

Indicator LEDs

4 clip‚ 4 signal‚ 1 power

Protection

Over-temperature‚ DC‚ turn on/off transients‚ subsonic‚ incorrect load‚ short-circuit

Connectors

Input: Four 3-position Euro-style detachable terminal blocks‚ two ports for MMA™input modules
Output: Two 4-position barrier strips

Construction

16-gauge steel-reinforced with 12-gauge rack ears

Dimensions

Height: 3.50" (8.84 cm); 2 EIA rack spaces
Width‚ front: 19.00" (48.26 cm)
Width‚ rear: 17.00" (43.18 cm)
Overall depth: 17.05" (43.31 cm)
Mounting depth: 16.63" (42.24 cm) behind front rack ears

WWeeiigghhtt

40 lbs. (18.1 kg)

PPoowweerr RReeqquuiirreemmeennttss

100‚ 120‚ 230–240 Vac‚ 50–60 Hz

TTeesstt CCoonnddiittiioonnss

120Vac‚ 60 Hz line input voltage maintained
All channels operating unless otherwise noted

(Due to our efforts for constant improvements‚ features and specifications listed herein are subject to change without notice.)