Peavey CS-900 User Manual

1. For proper bridge mode operation, Doth wires of the output must "float” above ground. If either wire were to become grounded,
this would present a short circuit to the associated channel of the CS-900. As an aid In determining the condition of the
oistrlDution system, the DDT activation LED's on botn channels are operational when the bridge mode is selected, Wheneverthe
CS-900 reaches full power output, both DOT activation LED's should flash simultaneously, Indicating that DDT compression Is
taking placein both channels. This 1$ a normal indication, since in bridge mode with normal loading, both channels should reach
ful I power simultaneously. If the DDT activation LED or orte channel flashes at a much lower signal level lhan that of the other
channel, this indicates that Ihe bridge loading is not balanced and that one leg may have become shorted to ground. In this case,
steps should be taken to locate the problem and clear it. If both LED’s Hash at relatively low output power levels, then this
indicates that the total bridge loading is too low in value or possibly shorted across Itself Remember, just as in the stereo mode,
the power LED array (Channel A) should reach 100% indication before the DDT system is activated on both channels,
2. The jumper plug In the transformer accessory socket (10) of channel A island car be replaced with a PL-2 transformer module.
This will convert the XLR connector on Island A to balanced operation and provide a balanced input for the bridged CS-9CX}.
3. The jumper plug in the crossover accessory socket (12) of the Channel A Island can be replaced withacrossoverorotherspecial
purpose plug-ln module. As per previous discussion, the associated bridge power amp input jacks (12) are now isolated, and
signals must be patched to this bridge input to completelheclrcuit. Obviously, in bridge modelhe CS-900 isonly a one-channel
amp Consepuently. to biamp, additional power amplifier channels must be available. Again, a word of caution concerning the
power handling capability of the associated loudspeaker components In order. Unless the oomponents are part of an array
connected In some serles/parallei arrangement to distribute The power, blamping with the CS-900 In bridge mode (900 watts)
should beavoKSed,
4. You should notice from Diagram 4 that crossover island B is completely isolated whenever bridge mode is selected, and it is
normally not used, However, it can be used with additional plug-in modules forexpanded and more complicated systems. These
additional patches we will leave lo the imagination of the user.
As you can see, the CS-900 is a very flexible amplifier. We highly recommend that you become thoroughly famiiiar with every aspect of
operation before connecting any speaker syatam to it. Pay particular attention to the functions ot the patch panel and load Imp^ance. We
have included several patch diagrams for information purposes.
Attention Mr, Service Technician: If the time should ever come for you to service a CS-900 (which we sincerely hope Is very
Infrequently), the complete disassembly instruct ions a re a vail able from thePeavey National ServiceCenter upon request. By carefully
following the printed irrstruclions you should have no problems gaining access to the heat tube itself and all fhe associated circuitry.
Our Service Department stands ready to help you If needed with additional Instructions on the correct service parts. Warning: There
are no user serviceable parts or functions Inside the amplifier. Disassembly should only be attempted by a qualified Peavey service
technician, and only after the ampllllef has been disconnected from the mains power source.
Warning: Voltage levels inside thisamptifier could cause severe bodily harm.Alwaysdisconnect unit from mams power source and
discharge major electrolytic capacitors before attempting to service. Add it Iona I ly, the mains power sou reels switched by a mains Iriac
which is controlled by the front panel rocker switch. Mains power voltage Is always present at this trlac even with the switch off.

Peavey CS-900 Specifications

General

Brand	Peavey
Model	CS-900
Category	Amplifier
Language	English