diyAudio Forums Archive > Top > Amplifiers > Solid State Alesis Matica 900 - Click HERE for Original Thread Audio Tech I am repairing this amp. I have different input sensivity on the channels. I'll be glad If someone can help me with serv. manual or schematics. Therefore here is my email audiotech@email.si. Thanks! AT Netlist I don't know the amp but did you check the solderings in the input stage? The input resistors and caps? Bad contacts in input switches can also be the cause of this problem. /Hugo Audio Tech Hello Netlist, I checked only the bias of both channels and its the same. I think that I have something broken immidiately after the inputs. Because on "bad" channel the sinewave looks nice as on the good one. If I want to make them clip at the same time I have to set gain potis (scale 1-10) for good one on 7 for bad one to 10. I just ask for schematics because is much more easier to find what is causing this difference. If I wont get it, as it looks, I have to go on on the hard way. But is very strange the amp was produced in 1996 and there are no free serv. manuals to find. Regards, AT Netlist Did you contact Alesis? /Hugo

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