fill35U

And, from the same site, here's another thread showing a DIY crossover: DIY JBL crossover project

It would appear to actually be a 1mH inductor in series with a 7.5 ohm resistor. See the bottom post here: L200t projects at audioheritage.org Hope that helps- good luck!

Is this the correct schematic for those JBL L200t3 speakers?

We watched the original "Music Man" again this past weekend. BTW, it's a good test disk for video accuracy- lots of checkered and striped costumes in Technicolor. Anyhow, it got me to researching the Buffalo Bills , and barbershop quartets in general. Fascinating stuff, lots of psychoacoustics, particularly the "barbershop seventh" , also known as "The Angel's Voice": "Averill notes the hints of rapture, "quasi-religion" and erotic passion in the language used by barbershoppers to describe the emotional effect. He quotes Jim Ewin as reporting "a tingling of the spine, the raising of the hairs on the back of the neck, the spontaneous arrival of goose flesh on the forearm ... the fifth note has almost mysterious propensities. It's the consummation devoutly wished by those of us who love Barbershop harmony. If you ask us to explain why we love it so, we are hard put to answer; that's where our faith takes over." Averill notes too the use of the language of addiction, "there's this great big chord that gets people hooked." An early manual was entitled "A Handbook for Adeline Addicts".[2] " Sound familiar?

I don't know if it's your cup of tea, but when I listened to what others had posted here, I was reminded of Manowar's "Thunderpick/Guyana". Joey DeMaio utterly thrashed the Spanish/South American riffs on a *bass* guitar:

If you cut jumpers out of a soda can, and keep them at least one inch wide, they'll have the equivalent resistance of 14ga copper wire. Which I would hope would be ample ampacity! Cut a 1" wide rectangle out about 1" longer than the distance between your post centerlines. Cut 1/4" wide slots 1/2" deep on the post centerlines. Trim for fit and appearance. Lightly sand *both* sides of the strip at the points where the posts will be clamping down.

Wow, that's good stuff, Mark! This is probably "close but no cigar", but I love Jesse Cook:

Not to run the subject into the good Earth, but here's another paper in favor of CD quality and against Hi-Res: Sampling Theory for Digital Audio - Dan Lavry And WRT phasing information: does Carson's Law imply you need an infinite bandwidth to carry infinitely precise phase information? So how much is necessary? Would 192kHz allow us to represent quadrature 20kHz audio signals? Would it be audibly significant? Given the wavelength, I don't think it would practically matter.

I agree that we can't discount the ultrasonic. My own ears no longer work well in the top octave, but I can still *sense* tones up there. Subharmonics, beat frequencies? It's almost impossible to reproduce and deliver a perfect sine wave in the real world, given diffraction, reflection, interference, etc. So is it important to try to reproduce ultrasound, or just the audible artifacts? If the latter, then "low-res" should have that covered already.

That said, I've been thinking about what Jim wrote: It took me a while to respond, because I did a little research, and I'm not smart enough to decipher most of what I found. In one way, I would think it to be *effectively* a non-issue. Sensitivity to phase distortion drops off dramatically in the top octave. Even then, it's been demonstrated noticeable only on pure tones or similar. I suppose it could be a problem on passages that consist solely of 16kHz sine waves... As you move below 20kHz, jitter errors of course become less atrocious (WRT phasing), and high sampling rates have less and less advantage. But Jim's theory intrigues me, because I can't figure out if reproducing phase variations at the upper edge of bandwidth requires more information (higher bandwidth). Is Nyquist sufficient, violated, or does not apply? Do all the rounding errors average to the same result, no matter how fast and precise the quantization is, given the theoretical upper limits of our hearing?

Here's a good article explaning why Hi Res is unnecessary or even detrimental: Xiph.org on the pointlessness of Hi Res

Nice catch, Terry! Those look great! And good job getting those monsters home safely. Enjoy!

I don't see an advantage to the more bits/higher sampling rates. Those things make it easier or simpler to get the necessary analog stuff done, but at the expense of harder working digital stuff. Because of Nyquist, CD rate should be plenty good enough. Dynamic range is plenty with CD, there's more noise in the overall system or on the recording! Nonetheless, I'd still like to ABX CD vs. High(er) Res. And both vs. vinyl. I would be surprised if I could tell a difference. The format is the least of our problems. There's an awful lot of hemming and hawing in that article...

Welcome to theCarversite, Bill! That's a nice receiver for a great price! I'm glad she worked as advertised. Good luck with the refurbishment!

If you're going to run a powerful ultrasonic cleaner at home, please be mindful of where your pets are when you turn it on. Seriously.

For more sibilance, let me add "Moondance" by Van Morrison:

Lots of good suggestions I'm going to have to check out! IMHO your test playlist should always include selections that you are very familiar with. A good system should verify what you already know is there, a better system will reveal what you *didn't* know was there! Here's one I like: Telarc Sampler 3 at Amazon.com It starts off with "Also Sprach Zarathustra". There's a sustained 16Hz (and 32Hz) organ note through almost the entire track. It really "separates the men from the boys" (and the cones from the spiders) WRT subwoofers! If you're looking for transients, the "Banditen Gallop" will make you jump. "Diverse Kanons" is a wide-ranging synthesizer. Other tracks have male and female soloists and chorals. And a good, clean, loud Beach Boys romp. This Kingston Trio live album has good dynamics:

Put this in perspective of Japanese Planing Competition:

I think I saw this at Costco last weekend. Not *that* funny- we've got several 55 gallon drums of glue at my work, and it's all applied automatically by machines. You haven't seen a mess until you come in the next morning after a hose has burst, and 100 gallons of glue have made a half-dried puddle the area of a swimming pool...

Chiro- Your pics aren't coming up for me. (dagnabbit?) The old thread was here: Cleaning Vinyl With Wood Glue

I did recall reading that the 8008 is DC-coupled all the way through. Perhaps the resistors are there to mitigate current in case of a DC offset and fault to the chassis or ground? Edit: Since the 8008BB is a dual monoblock, they might have wanted to limit a fault in one side from harming the other?

@Schurkey- That Aragon 8008 is a nice amp! Any idea why they had the resistance between the negative terminals? Are both negative terminals therefore floating with respect to ground?