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Old 2nd April 2011, 01:45 PM   #21
v-bro is offline v-bro  Netherlands
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In Europe these are common prices, and regarding the parts and design quality it is well worth it, still very cheap actually.

Here's rather expensive:
Autocostruire - made in italy audio tools

And then still, it's probably a bit more expensive to have the heating on there in Italy than in China. Just like a human life is less valued over there... Your opinion less valued... Your rights.... You've gotta keep seeing things in perspective....
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Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......
 
Old 2nd April 2011, 01:48 PM   #22
v-bro is offline v-bro  Netherlands
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Quote:
Originally Posted by Cristi View Post
so this is what 41hz amps are using ??? thanx for telling me ;-)
They were your amps blowing up and running bloody hot, not 41hz amps, joker....
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Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......
 
Old 2nd April 2011, 02:18 PM   #23
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Quote:
Originally Posted by Cristi View Post
richard,
You're still pissed off because i didn't accept to offer you a full refund for a board bought two years ago which you damage-it, i repaired for free then you said i did nothing to it ?
I did not damage the board at all Cristi - it was in careful storage for ages before i got the time to install it, which i did correctly.




Any ideas chaps how to get the sound to my taste?
 
Old 2nd April 2011, 02:40 PM   #24
jsganz is offline jsganz  United States
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Default TA 3020 v4

I've had one of Cristi's TA3020 v4 modules for a couple months now.
All I can say is it far surpasses anything I've tried so far.
I've been a professional musician for over 40 years and I actually use it as
a power amp for my electric (pedal steel) guitar playing live in various locations around this area.
I've gone through alot of power amps over the years (modules and rack mounted). The ones that sounded the best didn't hold up all that well.
Others that held up under the stress didn't sound that great. This TA3020 v4 has outperformed all the amps that I've played through.
The heat syncs generally run only luke warm and the two speed fan only kicks on occasionally.
Another US made module I had last year sounded good but kept cutting off momentarily when hit with a sudden increase in audio signal.
This one doesn't have that problem and it sounds better as well.
 
Old 2nd April 2011, 03:09 PM   #25
SY is offline SY  United States
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I've removed some personal attacks. If that is repeated, posting privileges will be suspended. Vigorous debates about technical matters are encouraged.
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Old 2nd April 2011, 05:25 PM   #26
v-bro is offline v-bro  Netherlands
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@Jsganz, there are always the lucky ones, being happy... And surely you are, the Tripath chip to be grateful for. Without this good heart in your amp it would not be a fraction as good performing.... And there are great protecion circuits in this amp, but all I can say is there are even much better ones around...
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Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......
 
Old 2nd April 2011, 05:50 PM   #27
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Actually, despite Cristi's accusations of me making wiring mistakes, etc. (Which really used to wind me up,) (A chimp with a basic knowledge of electrical circuits could not wire-up these modules incorrectly,) I am warming to the sound a little. Maybe now it's had many many many hours of running-in, it's "hardening" a little? Whereas it used to sound very loose and vague, especially in the mid ranges.

I've noticed that the input caps could possibly be changed, but what kind of caps should i be looking at? Any ideas chaps? Could some make of speaker cable be used to tighten the mid ranges a little? (I've had this cable for over 15 years, it's biwire, can't even remember the make!)

The speakers are Gale Model 4's (floorstanders with 3Kg of kiln-dried sand in a special enclosure at the base of the speakers - they date from 1995. They sounded fantastic with my old amp.)

I tried a pair of Monitor Audio Bronze B4's and the mid-range was GHASTLY! It was almost as if I had layers of cotton wool in my ears! They'll be going back to ebay!

edit: I have no bitterness with you Cristi, as you said earlier, "I'm still annoyed." Well, I'm not actually. I just want to move forwards and get this amp thoroughly sorted.

Last edited by Richie B; 2nd April 2011 at 05:53 PM.
 
Old 2nd April 2011, 06:11 PM   #28
v-bro is offline v-bro  Netherlands
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AVX polyester input caps I find great, but you may find differently.... Try to avoid the really large capacitors everybody is raving about with ridiculously high voltage ratings, or perhaps I was unlucky to have only noisy ones that sounded bloated...

These amps certainly have to grow on you for a bit, I thought you knew that!

As for the speaker cable religion stuff, I have around 25 years of experience with the best of the best cables by having worked for and still now having friends working in the field. And no, there is no magic, there are some basic rules that make a cable good, and further any fairly OK cable has LRC parasitics that can only degrade the sound in the gigaherz range. I help you hoping you have ears that sensitive, on the other hand not because it would only make you go crazy!
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Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......

Last edited by v-bro; 2nd April 2011 at 06:13 PM.
 
Old 2nd April 2011, 06:33 PM   #29
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Quote:
Originally Posted by v-bro View Post
...any fairly OK cable has LRC parasitics that can only degrade the sound in the gigaherz range.
???
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Old 2nd April 2011, 06:47 PM   #30
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Thanks v-bro Very helpful, I will try these AVX polyester input caps, do you have any links for 2.2uF types? Here is a schematic showing the input caps (circled in red.)

Click the image to open in full size.

Looking at the location of these: (outlined in red)

Click the image to open in full size.

I'm assuming they need to be mounted slightly off-board due to their size...... should i be concerned about any interference by running the capacitor leads exposed? I suppose I'm worried about parasitics, etc.......
 

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