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Post pics of your builds....
Dec 13, 2004 at 11:26 PM Post #151 of 9,811
Quote:

Originally Posted by amb
Very exotic casework there, Selexus. Congratulations. Are those two copper-colored tubes strictly cosmetic? Do they contain anything?


The tubes are 16swg copper polished and then laquered, and yes just cosmetic. I had to fill the gaps with something
biggrin.gif


Quote:

The power transformer looms rather close to the input circuitry on the PPA board, though. Do you notice any induced hum?


Not at normal levels. If i turn things to max with no source playing i can hear a faint hum. Not enough to ever worry about. My hearing is so shot these days that it wouldn't make a lot of difference to me anyway
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Dec 14, 2004 at 3:58 AM Post #152 of 9,811
Quote:

Originally Posted by Selexus
... I had a couple of the powermates (in silver) floating around. ...


Do you have any more floating around that you might want to sell? I always wanted to try one out but not at the $40-$50 pricetag. Awesome casing btw! Are those cones Vibapods (or something similar) or home grown?
 
Dec 14, 2004 at 10:21 AM Post #153 of 9,811
Quote:

Originally Posted by Juergen
Do you have any more floating around that you might want to sell? I always wanted to try one out but not at the $40-$50 pricetag.


I've got one left that i'm going to use on the HTPC. I would recomend them, they're well made, stylish and practical.

Quote:

Originally Posted by Juergen
Awesome casing btw! Are those cones Vibapods (or something similar) or home grown?


The feet are turned on the lathe by me, from the same bar as the rest of the turned parts. There is an allen bolt coming up from the foot through the copper and into an ali ring inside the long copper tube. This clamps the foot assy to the tube. A rubber blanking grommet is then fitted into the "point" of the cone to blank off the hole and provide a soft insulating foot.
 
Dec 14, 2004 at 11:22 AM Post #154 of 9,811
Quote:

Originally Posted by Selexus
Hi everyone,

Well after a little trouble with the volume led ring (my fault) my PPA is up and running.
Once it's run in i'll think about diamond buffers, biasing and crossfeed.

wi6pk

wi6tw


I'm really proud of the case, it's the first one i've made and nearly turned out as i'd intended. I'm currently running it from the onboard sound of my pc and it sounds great. The next stage is to build a custom pc into a similar chassis with an RME soundcard, mount a behringer dcx2496 into another similar box and finally build some similar looking gainclone power amps. I'll finally have the system i'll be happy with (i think
rolleyes.gif
).


I bet you could sell those things. It looks really neat.
 
Dec 14, 2004 at 11:44 AM Post #155 of 9,811
Quote:

Originally Posted by Onix
I bet you could sell those things. It looks really neat.


Do you think so
confused.gif
. I really enjoyed making it and am really looking forward to makeing a matching PC, power amp, and Xover.
I'd be more than happy to make something similar for anyone who wants one
icon10.gif
.
 
Dec 14, 2004 at 1:07 PM Post #156 of 9,811
Quote:

Originally Posted by Selexus
Do you think so
confused.gif
. I really enjoyed making it and am really looking forward to makeing a matching PC, power amp, and Xover.
I'd be more than happy to make something similar for anyone who wants one
icon10.gif
.


Well, just check this page:

http://www.elvencraft.com/ppa/

Here you find the information regarding the development of the PPA and a list of builders. Believe me, if I had the money I would ask you for an amp rigth now. Your work is really nice looking. And a matching PC would appeal to many here. Think about it, really.
 
Dec 16, 2004 at 11:01 AM Post #157 of 9,811
Quote:

Originally Posted by Selexus
Hi everyone,

Well after a little trouble with the volume led ring (my fault) my PPA is up and running.
Once it's run in i'll think about diamond buffers, biasing and crossfeed.

wi6pk

wi6tw


I'm really proud of the case, it's the first one i've made and nearly turned out as i'd intended. I'm currently running it from the onboard sound of my pc and it sounds great. The next stage is to build a custom pc into a similar chassis with an RME soundcard, mount a behringer dcx2496 into another similar box and finally build some similar looking gainclone power amps. I'll finally have the system i'll be happy with (i think
rolleyes.gif
).



What is that?

I must have!
 
Dec 17, 2004 at 5:48 AM Post #159 of 9,811
Quote:

Originally Posted by bhd812
What is that?

I must have!


Well, I hope Selexus is reading. I insist, it looks really neat.
 
Dec 17, 2004 at 10:55 AM Post #160 of 9,811
Quote:

Originally Posted by Onix
Well, I hope Selexus is reading.


Yeah i'm here.
I'm trying to decide whether to offer this chassis and similar models to people !
confused.gif

Maybe if anyone who is interested could drop me a line i'd have an idea if it was something worth persuing.

PM me if your interested
biggrin.gif
.

Cheers
 
Dec 17, 2004 at 11:14 AM Post #161 of 9,811
oh wouldnt it be amazing if it had the thermal conductivity that you could use the copper tube as a heatsink that was good enough for a dynahi. coz thats the perfect sort of enclosure for such an amp!
 
Dec 17, 2004 at 11:42 AM Post #162 of 9,811
Quote:

Originally Posted by skyskraper
oh wouldnt it be amazing if it had the thermal conductivity that you could use the copper tube as a heatsink that was good enough for a dynahi. coz thats the perfect sort of enclosure for such an amp!


The Gainclone power amp i'm planning has just that funtionality, although the copper bars are central and the enclosures are mounted outboard with the chips mounted in such a way that the copper tubes cunduct heat away from them. I've not looked at the dynahi but i'm sure it's do able
biggrin.gif


Cheers
 
Dec 17, 2004 at 8:08 PM Post #163 of 9,811
the design is basically a Pimeta clone, a pimeta in a MINT!
it is not fully completed yet since the volume control pot is by-passed, the CRD for biasing op-amp into class-A is not installed, and most importently the thing is not put in a mint casing yet.

headamp_f.jpg


headamp_l.jpg


the surprising thing is that it runs on the first try! (although I have tested and corrected multiple error b4 acutally running it, including a spoiled OS-con).

This amp is actually my warm up for the coming PPA clone.
I was thinking of trying something easier first b4 actually solder the PPA, my PPA layout is already standing by...
As I progress I believe this amp can actually be more difficult to solder due to the density and the number of cross junctions.
 
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