Peavey CS-900 User Manual

PATCH PANEL
The patch panel of the CS-900 offers many teaturestnat make the amplifier more flexible. In order to simplify the explanation, four basic
modes of operation will be introduced. Simplified functioriataiagramsareprlntedon the top of the CS-900snowing these four modes. These
diagrams also appear in this manual for discussion purposes.
C8-900 PATCH PANEL CSTEREO MODE) WITH JUMPERS
STEREO MODE {UNBALANCED INPUTS]
The CS-900 is shipped from the factory with jumper plugs inserted in the transformer (10) and crossover (12) accessory sockets, These
jumperplugs are necessary If the tow Impedance connectors (9) are to be used as Inputaforeach channel. As indicatedin Diagrarn 1, the XLR
connectors are wired In ah uhbalanced configuration (pins 1 and 2 are ground, pin 3 is input). The unbalanced input configuration is
acceptablewheneverrelativelyshortcable runs are employed or when the associated mlxerused has a transformer-coupled output Under
these circumstances, thisconfigurati on will usually provldeadequate hum and interference rejection for most environments. Noticethatthe
jumper plugs in the crossover accessory sockets are required to complete the signal patch to the respective poweramp Inputs (15). If the
normal unbalanced power amp input jacks are used instead, then the jumper plugs arenot necessary, it issuggested, however, that they
be left in their respective sockets for possible later usage. As with alt Peavey amplifiers, the CS-900 has two power arrip input jacks per
channel (15). which offer considerable flexibility In hook-up possibilities. For monaural operation (the same signal Is applied to both
channels), the mixer output is plugged In one of the parallel input jacks in one of the channels and a short shielded jumper cable Is then
connected between the remaining Input jack on that channel to one of the parallel Inputjacks on the other channel. Thlstechniqueiscalled
Oalsy-chalnlng and can be repealed many times to include additional amplifier channels requiring the same signal feed,
STEREO MODE (BALANCED INPUTS)
When conditions require the useofa balanced jnputatlheamplifier,theXLRconnector5<9) on either orboth channels can becohverted to
a balanced configuralloh by removing the jumper plug from the transformer accessory socket (10) end plugging in an Input transformer
module (PL-2). The Peavey model PL-2 transformer module is a nominaM;1 turn ratio-type, resulting in unity gain. As indicated In Diagram 2,
the XLR connector Is now wired as aconvenllonal balanced-type input (pin 1 is ground, pin 2 is negative, pin 3 is positive). Again, thejum per
plugs I nth ©crossover accessory sockets a re required to complete the signal patch to the respective poweranp inputs (15). If balanced stereo
operation is desired, then two PL-2 modules are requirefl. However, for monaural operation, only one PL-2 is needed, and the inputs are
connectedtogetherby placing ashortsrilelded jumper cable between one oflh© poweramp Inputjacks (15) on eachchannel. Obviously, the
XLR connector associated with the transformer module ts the balanced system Input and the other XLR connector Is not used.
CS-900 PATCH PANEL (STEREO MODEI
MITH BAL. INPUT TRANSFORMER MODULES
TQftMS FORMER

Peavey CS-900 Specifications

General

Brand	Peavey
Model	CS-900
Category	Amplifier
Language	English