Question about Yamaha DSP-A3090 7-Channel Amplifier
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Posted on Jan 02, 2017
Power Output (1 kHz*) Stereo Bridge-Mono 8 Ohm 4 Ohm 8 Ohm XLS 802 500W 800W 1600W XLS 602 380W 600W 1200W XLS 402 300W 450W 900W XLS 202 200W 300W 600W *1 kHz Power: refers to maximum average power in watts at 1 kHz with 0.5% THD. It depends on the impedence of the speakers. Carfull as you could burn up this amp if you exceed the resistance rating on it. Go here on all of the specs of this model of crown amps. http://www.crownaudio.com/amp_htm/xlsspec.htm Good Luck
Posted on Mar 27, 2007
Measure DC to ground on the output transistors to check for any offset. The protect circuit is the least likely to be the problem. Post the readings here and I'll guide you from there.
Posted on Mar 11, 2009
I do not have experience with this particular amp. Generic trouble shooting follows:
Might it be that you have headphones plugged in? (Unplug them, they turn off the speaker output) You are absolutely certain of the settings on your amp? (check them again) Are you certain you have an input? (AM, FM, CD, AUX, other) (Make sure the input is turned ON and the source is properly selected.
Is the output protected by a fuse or fuses? (look on the back panel for fuses or fuse holder)
Everything that is suppose to be plugged in IS plugged in ... all cables are intact? Did you check them for contunity? You can check contunity with a flashlight battery, the light of a flashlight and a paper clip.
Speaker selection switches are pressed as appropriate. Speakers are connected to the appropriate outputs and they are ON. Speakers are of proper rating - and resistance? 4 ohm - 8 ohm - 16 ohm??? Any controls on the speaker are set at a neutral setting?
I'm sorry your device is not functioning as you think it should. These things are designed to work and generally, they are pretty good at it. Sometimes, they just break (stop functioning) It may be that you will have to take it back from where you got it for repair or adjustment. But I am hoping you have the headphones plugged in.
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Posted on Dec 26, 2009
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