About film caps http://members.aol.com/sbench102/caps.html

Andrew Jute McCoy bleats about proof:

So, you silly little windbag, show us some actual proof of any single one of your many claims.

Proof equals facts from an independent source than any given disinterested third party would accept without question.

Bret "stole" from you. That should be incredibly easy to prove as required above. Of course, if you cannot prove it, you reveal yourself to be the simpleton bald jackass that the rest of the world sees immediately.

Peter Wieck Wyncote, PA

Case in point this silly accusation that the Jute sockpuppet has made about capacitor dielectrics and a comment that I made. Jute shamelessly misinteprets what I said, again again. There's no point in refuting the Jute sockpuppet, because he's a self-energizing source of errors that is isolated from the real world.

Arny Krueger, adds insult to the injury of the false witness he has already brought:

"Case in point this silly accusation that the Jute sockpuppet has made about capacitor dielectrics and a comment that I made. Jute shamelessly misinteprets what I said, again again. There's no point in refuting the Jute sockpuppet, because he's a self-energizing source of errors that is isolated from the real world."

Crap, you hypocritical, lying little bible basher; those are merely more lies and abuse. You made a specific statement of fact about me, you named me, you made a conclusion from your lie and my name. Now you're trying to lie your way out being challenged to provide proof of your specific statements. When it comes to mano a mano, Krueger, you're a coward and a chiseler, not a man at all, just an old woman trying to slide away behind the support of worthless scum like Worthless Wiecky and the thief Bret Ludwig. Here are your specific statements:

Yo, Krueger, you're a liar.

Show one instance where I "proclaimed" or even suggested a capacitor upgrade. If you can't, you're a liar.

Show one instance where I "proclaimed" or even suggested a "gratuitous"

capacitor alteration of any kind. If you can't, you're a liar.

You're such a disgusting little man, Arny Krueger, in every sense of the word, that your lies hardly adds to the contempt in which we already hold you.

Andre Jute

Proof or apology, Krueger, you lying little hypocritical bible basher. One or the other. You can't slither away. Where I come from we step on snakes like you.

Unsigned out of contempt for a slimy little man who doesn't have the decency to apologize when he is caught out in another of his malicious lies

Er....is Arny really worth this level of passion? I've never found him so.

You have obviously never read any of his posts then.

Phildo

I read the non-technical ones, a few of which have been attacks on me. I still don't think he's worth all that huffing and puffing.

Phildo clearly has a 'thing' for Arny.

I've asked him to leave off it regularly but he feels Arny hasn't "leanrt his lesson" yet, so won't let an opportuniy pass to have a go at him.

In that respect he reminds of a less interesting version of the Middiot.

Graham

I have no anti-Behringer grudge.

You're being entirely disingenuous to suggest so. I've recommended Behringer in the past and I shall continue to do so where their products fit the bill.

Nor have I back-pedalled over anything.

Graham

From the above link.......

"

Proof QSC is using single sided phenolic paper PCBs.

Phildo "

The poster 'Phildo' a sound mixing engineer who mixes sound on cruise liners and posts in alt.audio.pro.live-sound is apparently under the impression that one of the products above contains phenolic-paper pcbs.

Apparently my word that it's not isn't good enough for him.

Comments welcome.

Graham

I think he's a twat and shouldn't be trying to give out advice on topics he knows nothing about.

Yeah, right, that's why I've had him killfiled for so long.

I would advice anyone to go take a look at alt.audio.pro.live-sound to see why Graham is so pissed with me. Basically he made a complete tit of himself over his anti-behringer grudge, threatened to get his lawyers involved, got totally laughed at then back-pedalled furiously with lots of excuses. He's regarded in much the same way as Arny is over there now.

Phildo

Read em and weep.

Phildo

Hey, not to change the subject to much. I just had an associate friend return from London, she said every thing over there is over priced, over rated, to many tea suckers just sitting around, with out a care in the world thinking that every one else is low life. Fuel $8+ per what ever system you use over there etc.. 2 bed room flat which her friend is going to sell and expects to 500kp ($1M bucks) with a tiny kitchen that you can't do squat in! just because it's next to the Tube! and what the hell kind of name is that any ways? Oh yeah, i understand they are still looking for the prostitute killer over there ?, sounds like some one may have gotten more than they bargained for and is now disgruntle! any relation of yours :)

That is a paraphrased line from the complaint of many Brits during WWII when our airmen were over there saving their sorry asses from being wiped from the planet. They said that there were three things wrong with Yankee fliers -- they were overpaid, oversexed, and over here.

Jim

That may not be entirely accurate:

martin

At least here on our side of the pond, you can get board substrates manufactured in whatever color you wish.

The final appearance of color is a combination of...

From your stated electronics experience, I would have thought that you had encountered these varistions.

The "grain" looks way too big and to uniform to be woven fiberglass. At least from my experience in the fiberglass industry. But it is possible that it could be some kind of fiberglass "gauze" like material for just a bit of mechanical strength. Certainly better than pure phenol-paper.

But nothing like the stresses of big heavy industrial equipment like commercial sound reinforcement amplifiers.

The photo you posted is not all that different from the QSC/Behr design. Remember that QSC/Behr are using consumer production techniques (auto-insert, through- hole higher-power components, etc.) because they are selling into an extremely competitive market where every fraction of a cent counts against the bottom line.

Your photo is beautiful, admirable, even, but I'd rather work on the QSC, if I had my choice.

OTOH, the thermal design of the board in your photo appears to leave a bit to be desired. Placing the power devices out on the edges certainly makes it easier to repair, but consider the thermal profile of having the heat source out at the edges rather than more centrally positioned.

It was carefully, quantitatively designed. We also tested dozens of fets to destruction. If all the fets were in the center, all the heat would be in the center. At these power levels, lateral (spreading) thermal resistance of the heatsink is a big deal, hence the copper spreaders and the fet distribution. Note that the P and N fets are interleaved, which wasn't popular with my PC layout guy. Two smaller temperature peaks are better than one big one.

The thermal design of the Europower unit gives me the willies. That dinky fan, blowing down the length of those restricted heatsinks, can't be very effective. And one end will be a lot hotter than the other. In my amp, 360 cfm of air hits the heatsink broadside.

John

Yes I see those details now that I viewed the image in a larger size. The board is beautiful and elegant, no issue with that.

But consider not only the economic marketplace the QSC was designed for (I don't consider the Europower to be "designed" but rather cloned from the QSC) but also the technical/physical conditions of the equipment in that niche market. If your board is made for any kind of rack-mount equipment, it must be rather large. OTOH, the QSC (and its ilk) are designed for maximum power density in 19-inch racks with no space between units. I suspect that QSC expended a proportional amount of physical/ thermal design activity, but their objectives and limitations were significantly different than yours. I suspect that both QSC and even Behringer would be out of business if they designed power amp boards as elegant as yours. But they would leave a nice- looking corpse.

Not necessarily.

Depends on the board material, and whether the color is inherent or the result of the addition of a colored filler and/or pigment.

This link shows the QSC substrate pretty clearly:

The tip-off that this isn't paper/phenolic is the cloth pattern.

I did a little research and found a commercial non-phenolic material that had an essentially identical appearance.

This is all in the AAPLS google archives from a month or two ago.