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If it reliably goes away after a few minutes, I wouldn't worry about it. Durings those first minutes, see if the sound can be mechanically affected by rapping on the side cover or pushing on the plugs. You may have a microphonic connection somewhere inside. This is usually because of bad...

Speakers are never the source of a buzz, don't worry about them. Can you control the volume of the buzz? Is it coming through both channels? I'm guessing no and yes... Things to try: Start easy- Give every plug a shove and wiggle. Play with the cable in connection on the back of the cable...

Sure, sure... that's how you check a driver's polarity. Any change in voltage (ac or dc) will make the cone move, and a .001 hz sine wave will get it just as hot.

Hi Stan It's AC. Music waveforms are alternating voltages that swing positive and then negative at speeds corresponding to the frequency of the notes involved, at least, by the time your speakers get it. 100hz means 100 up/downs of the voltage. A typical voltage to a tweeter would .01 to 10v...

Drop screen: out of the way and protected when not in use. a big slot in your ceiling or an add-on soffit enclosure. a very dusty installation job, cleaning for a week needs power and control signals for up and down. Could fail. sensitive to breezes. Fixed screen: enjoy looking at it...

You'd be surprise how good the felt can look if done right. It takes practice, so be prepared to destroy some. I've done whole rooms in black felt. With the screen on or the right lighting, the room is just in limbo. That's probably fine if you're married to Elvira. Most other fabrics don't...

Try a 20 ohm sandstone resistor in series with the rears. The amp won't care.

My favorite cheap solution- Attach a furring strip horizontally across the top and bottom of the wall and a vertical every 4 or 6 feet. Get some 1" batting from a fabric store. Run some short drywall screws through to hold it up on the wall. Get some craft felt (lots of colors) and use...

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Sounds like that aiwa might be bi-amped. Were there more than two connections per original speaker? If so, you'll get either highs or lows but not both unless you mod your speakers for bi-amping. The other problem is that those little systems use very efficeint speakers to overcome their low...

Clipping usually applies to a power amplifier. If an amps tries to put out a tall wave form (maybe 20 to 40 volts) and the power supply doesn't have enough current to back it up, the wave form will flatten out at the level where the power ran out. Not necessarily bad for the amp, but that moment...

I always keep a pnuematic hand-pumped HT as a back-up.

How old is this sansui? It needs professional help, unless you're up to doing the following... Spray WD into every knob, switch, rotary wafer you can get at. Mutate the straw as needed. Just a spritz, then twist the knob or rattle the switch a whole lot. Look for any switches in the back...

Hello, Jaque.... Here's my first post, hope it helps. I was a bench tech in an A/V repair shop for 14 years and worked on a lot of bose stuff. I will save my bose bashing for some more appropriate opportunity. I'll just tell the truth about it. That little eq box is absolutely necessary to...