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Old 26th April 2005, 12:30 PM   #11
spots25 is offline spots25  United States
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Default Re: mods

Quote:
Originally posted by jmourik
spots25, which modifications did you make? Just being curious...

jan
I put it in an aluminum project case, changed the inputs to RCA, changed the outputs to binding posts, and soldered the inputs/outputs directly to the board, and put in a new volume control knob and power switch. The hardest part was learning how to desolder (with a desoldering bulb) but it got easier when I used a non-crappy solding iron
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Old 26th April 2005, 12:51 PM   #12
ohenry is offline ohenry  United States
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I'm pretty sure Vinnie uses SI's, but I still feel that he isn't overpricing. $500 isn't too much to ask for his amp, given his manufacturing scale and customer service level. And IMO, he'll offer options and customization that will keep his company afloat after the deluxe SI is on the streets. Who's to say that he won't be upgrading the deluxe version.

For folks that feel that it's easily reproduced at home cheaper, knock yourselves out. There's no reason to slam Vinnie for trying to make this craziness into a career and a reasonable salary.

And while tempted early on, I don't own his product(s). I enjoy burning my fingers too much.
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Old 26th April 2005, 03:28 PM   #13
percy is offline percy  United States
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Default Re: New version of T-Amp by Rick Bracke

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Originally posted by jmourik
.... Sonic Impact Technologies is now introducing his own hot-rodded version, incorporating the features customers have been asking for...

and does anyone know what hot-rodding exactly has been done and what features have been incorporated ?
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Old 26th April 2005, 05:46 PM   #14
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I don't think they've put the amp up yet with it's details. I would guess that it's going to be:

1) A metal case
2) A better volume control
3) Bigger PSU cap(s) and possibly better quality caps as well.
4) Bigger coupling cap at the input
5) Binding posts and RCA jacks instead of spring terminals and 1/8" jack input.
6) Changing the feedback resistor from 36k to 20k

All these changes are really cheap and/or really easy for a company that's mass producing these amps, so this would be my guess.
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Old 26th April 2005, 06:06 PM   #15
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Quote:
Originally posted by motherone
1) A metal case
From the pictures, my guess was that the case is still plastic.

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Old 27th April 2005, 02:53 PM   #16
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Speaking of Vinnies amp, there is a couple of new reviews of it on positive-feedback.com. It got somewhat mixed reviews...but what's probably more interesting is that they show pics of inside of the amp. Wonder how Vinnie feels about their doing this?

It looks as though he's using the stock pot. Interesting.

positive-feedback

I wonder if he replaces the coupling caps? If so, maybe he's using multilayer ceramics?
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Old 27th April 2005, 03:45 PM   #17
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The pics may be a little hard to find since they are posted near the bottom of the page.

Click the image to open in full size.
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Old 27th April 2005, 03:48 PM   #18
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Quote:
Originally posted by TriodeGuy
[B]Speaking of Vinnies amp, there is a couple of new reviews of it on positive-feedback.com. It got somewhat mixed reviews...but what's probably more interesting is that they show pics of inside of the amp. Wonder how Vinnie feels about their doing this?

It looks as though he's using the stock pot. Interesting.
(2) The input signal is sent directly to a "shunt-mode" tweaked pot, where only one resistor is actually in the signal path. The potentiometer is simply used to shunt a portion of the signal to ground (which varies with knob position). The signal from the volume control is wired directly to the amplifier board. There are no signal-degrading connectors in the signal path, and the signal wires are routed away from the output filter to minimize noise.


I can't really say I'm that impressed, looking at his mods. I guess it strikes me as a bit 47-labsish on the QC side.
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Old 27th April 2005, 05:16 PM   #19
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Ahhh. My bad, should've read the interview!
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Old 28th April 2005, 09:30 PM   #20
Pano is offline Pano  United States
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Yikes! That's it?
A picture is with a 1000 words.

And to think of all the hard work I've been putting into mine.
Nobel pot, Panasonic film input caps, shielded cable, better inductors, regulated PSU, etc.

Phooey, I must be an idiot. Sigh....
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