Recent content by highfigh

Did you increase the ground wire from the starting battery to the body or frame? All of that current goes through the little 6ga or whatever they installed at the factory and if it can't, the current passes wherever it can in order to make a balanced circuit (not the same as balanced audio). Big...

Could be a thermal problem (heat gun and freeze mist are used for finding these) or a bad solder joint. OpAmps can have thermal problems but when using a heat gun, it needs to have a very narrow outlet for the hot air because the other components need to remain at the ambient temperature. It...

The car';s road noise is canceling most of the bass- reverse the polarity of all speakers, including the subs. That way, the speakers will still be phase-aligned to the extent they are now, but the road noise will be less able to mask the bass. If your exhaust system is loud, you'll probably...

Hiss is not "ground noise", it's from setting the input sensitivity controls too high or nisy resistors.

If someone has that 95% amp, run it with a 1 Ohm load for a few hours- doesn't need to be cranked, just moderate output. Once it has run for that time, ut a hand on a heat sink and if possible, measure the temperature of the heat sinks. If they're not hot, it's very efficient and if they are...

Buy an LCR meter- they're not terribly expensive and it tests L (Induction), C (Capacitance) and R (Resistance).

These are 25 years old- they have no repair parts- never did. I don't know of a single speaker manufacturer, other than pro, that sells replacement surrounds. Contact Speaker Exchange in Minnesota.

Care to explain how playing low drains more power? Or, were you referring to lower battery voltage? That, I agree with.

But, but, but NOSTALGIA!

If you need to crank the volume control to anywhere near 75%, you need more power. Head unit power ratings have always been optimistic and ALL of them will distort near 75% volume control setting, in whole numbers of THD. Why is the amp in your head unit blown? Heat- that's what kills all...

It's not meant to be wired this way with tweeters, it's used for subwoofers because they need and benefit from more power. Tweeters receive the least power in the system and connecting them to a bridged amplifier is a good way to kill them. When an amplifier is bridged, the speaker(s) connects...

You want some MiniDiscs? I have a few. Can't play them, but I have them (...my Precious!).

Power supply is everything when amplifiers are concerned and if it can provide 75W with 12.5VDC or 14.4VDC, it means the power supply has more/larger capacitors than an amp which can't provide equal output at different supply voltage but the speaker impedance you're providing isn't on their...

That was for amps which were designed for it and usually, it was called 'tri-mode', IIRC. It used a coil to cross the sub over and a cap for each High Pass speaker/component. That prevents a direct connection across the whole bandwidth and prevents the impedance dropping because the frequency...