Edgar

Serious question: How do you eliminate the reflections of the photographer in the subject's eyes? I always shot landscapes. Never had to deal with that problem.

It happened over twenty years ago, and the story has probably been embellished in my mind since then, but the basic facts are that the UPS survived and at least some of the equipment that was plugged into it did not.

On a somewhat related topic, my house once took a 1.21 GW lightning strike. The only piece of stereo equipment that survived was the UPS / surge protector.

Don't forget that the DC resistance of a voice coil is generally lower than the AC impedance.

25 Watts RMS AC is exactly equivalent to 25 Watts DC, in terms of average voltage, average current, amount that a voice coil heats-up, etc.

Understand that @Racer X is making recommendations on the current capacity, not the voltage rating. It is a compromise between how loud you want to listen and how much risk of tweeter damage you're willing to take.

To send 1 Amp through 8 Ohms only requires 8 Volts. Use any 1A fuse that you can find; it will be fine.

At about age 25 I bought my first camera. Caught the bug, brought my camera with me everywhere I went, and got some really nice landscape shots. About a decade later, I suddenly lost the passion. Never got it back. I miss it.

At the risk of veering even more off-topic, I had several PM conversations with Jeff, in which I tried valiantly to get him (1) to stop the personal attacks, and (2) to justify his claims scientifically. (1) would only work for a short time, and (2) didn't work at all. Off-topic message complete. We now return you to regular programming.

I don't know whether colors add in parallel or add in series. Anybody?

Also, at the risk of channeling Medwin, remember that capacitance adds in parallel, while resistance divides in parallel. That is to say, for example, two identical capacitors in parallel have twice the capacitance but half the resistance. The opposite is also true: two identical capacitors in series have half the capacitance and twice the resistance. So you can almost always find some series/parallel combination that gives you whatever combination of capacitance and ESR that you need.

That appears to be a contentious subject here in the Forums. Chief Bonehead contends that modifications render the speaker to be "non-Klipsch". Some others feel that it's still Klipsch in its essence. Some of us don't care.

@Crankysoldermeister, those values are about an order of magnitude higher than what I found when I searched just prior to posting my comment. It's possible that the values I found were all measured at some fixed frequency, like maybe 10 kHz. Regardless, thanks for the info.

This brings up something about which I've been meaning to comment for a while, now. ESR may not be the culprit. Understand that ESR (equivalent series resistance) in crossover capacitors is milliOhms or tens of milliOhms. (1 milliOhm is 1/1000 Ohm.) Furthermore, if you replace a 50 milliOhm ESR capacitor with a 1 milliOhm ESR capacitor, all you have to do to bring things back to where they were before is add 49 milliOhms of resistance. A piece of thin wire can do that. There is more to capacitors than just capacitance and ESR. For example, there is stray inductance. Now, the inductance in crossover capacitors is so small that their self-resonance typically falls well above the audio range, but perhaps it shouldn't be neglected. There are other parasitic effects, too, and they must play into this somehow, else all capacitors would sound the same.

Well, you'll hear the same bass, but more midrange and treble. But I get your drift.

Playing Devil's Advocate here: In a passive network, everything affects everything else. All of the components interact. Some of the interactions are minor, even negligible. Some are not. One would have to do a full circuit analysis and sensitivity study to quantify the effects. Personally, I'm skeptical that changing capacitors in the mid/tweet section affects the bass in any significant way. But a full analysis could prove me wrong.

When dialing-in my biamplified system, I usually adjust the gains in 1/2 dB increments. That's a very small change, and it takes a fair amount of listening time to perceive it. I'm not sure that I could hear 1/4 dB, but then my hearing's not what it used to be.

Hofmann's Iron Law -- If you want Klipsch efficiency and 20 Hz, it's got to be big.

In that case, it seems that repairs are in order. Maybe sell them for parts on Craigslist and, after 41 years, treat yourself to some new electronics.

Unlikely that Cat5 cable will damage the receivers. Is the static present at all times, or only when you move controls? If only when you move controls, then the fix may be as simple as a can of contact cleaner.

Good advice in so many circumstances ...

Yes; sine waves at 80% rated power for 10 minutes would have the police visiting what was left of your house. 😀

@ClaudeJ1, did you intend to say 80% rated power or 80% max excursion?

"To a person who lives their entire life alone, old age comes as a complete surprise." - Edgar (also in my 63rd year as a single)

Well, the Xilica is programmable ... is there an inadvertent channel sum or reversal somewhere in the configuration?