My cs400 puts out at about 1/10 volume on both channels. Best I can tell with my Huntron is that all transistors, diodes and caps are good. All op amps tested good. Plus and minus 58 vdc and 16vdc on zener board seems fine. The problems is common to both channels.
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Re: I NEED TO HOOK UP MY CS 4000 AMPS
If you are trying to use 3 amps to drive a single cabinet, it can not be done. Bridging amplifiers requires a specific circuit design for that application. There is no way to hook up multiple amps to a single speaker.
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Should not be a problem, just bridge them together from the Pre out.
It´s all a question of impedance matching, but just 2 amps in parallel is no sweat. Then adjust volumes on the Amps.
BE CAREFUL THOSE HORNS HAVE CROSSOVERS, THOUGH !
Low frequencies will FRY THEM !!!
2 Channel Peavey CS-800 Amp (800 Watts) ...Peavey CS-800x 800 Watt PA Stereo power Amplifier. The Part in question Q4025P is an alternistor. Two SCRs back to back that may have shorted out if it is not working.
The Peavey XR8600 is NOT just an amp, but a powered mixer.
To SAFELY use this with your powered speakers, connect those speakers to the MAIN and MONITOR outputs on the front of the unit with 1/4 inch INSTRUMENT rated cables (NOT speaker cables).
To safely leave the power amps in the XR8600 with no output loads, plug GROUNDING plugs into the POWER AMP 1 and 2 input jacks on the front. This will prevent the power amps in the XR8600 from running with no load which COULD damage them.
Make the grounding plugs from 1/4 inch mono plugs by jumpering the centr aand sleeve terminals of the plug.
I just added a CS2000 to my rig and it is powering a pair of Peavy SP2s and a pair of SP118 with no problems at all and it sounds great. The CS stands for Commercial Series and is the workhorse of Peavey. I highly recommend them.
The CS series from Peavey is their workhorses. They are very good and reliable. I have been using variation of the series now for nearly 20 years with no problems. CS stands for Commercial Series meaning that it is intended for commercial use.
It's a log time ago that I repaired those amps., but I give it a shot.
There's a speakerprotection after the finals, what I remember it's a triac (SAC187, or something like that).
You will find it at a small pcb at the back of the amp. Normally it has three legs but the centre is cut away. If it's down you will measure 0 Ohm at the output, also with a switched off amp.
Thats all I can remember, it was about 25 years ago.