Question about Sony STR-D865
I have a STR-D865 and do not have the specs on the output power. I need new speakers and do not know the power rating requied
Sony STRD865 Home Receiver - Dolby Pro Logic - 1995 Related Models << STRD665 ($300) | STRD965 ($400) >> Here's the specs, see below but looks like 100Wx2 speakers at 8ohms. Features: A/V remote; Digital Signal Processing w/ 6 soundfields (Dolby Surround, Hall, Theater, Stadium, Game, Acoustic), Soundfield link; 30 presets; 4 audio/ 4 video inputs (1 tape monitor); sleep timer Specs: Stereo: 100w x2 into 8 ohms (20-20k Hz) at 0.3% THD; Pro Logic: 100w x3; Surround: 25w x2; subwoofer preout; FM sens. 11.2 dBf; 17" W x 5 3/4" H x 14 1/2" D Hope this helps!
Posted on Sep 14, 2007
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Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
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