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A Very Compact Hybrid Amp - Page 34

post #496 of 2213
drives k501 very well too
post #497 of 2213
Firtst of all, the project looks very impressive and I already see some great looking proto builds

I hear the first round of CHT kits are starting to roll in and I'm also eagerly anticipating delivery of my SOHA II kit from glassjar. By the looks of it they just might get built at the same time

Advice needed: I've only built a cmoy and 2 starving students. Let's just say I have both SOHA II and CTH kits on hand, which project would you recommend I tackle first and why?

Also, the CTH populated board appears quite 'tight'. In terms of socketing, which components (if any) would most recommended remain socketed vs. permanently soldered on the board, (as well as test points during initial setup or during troubleshooting)? thanks.

zk
post #498 of 2213
Quote:
Originally Posted by zkool448 View Post
Firtst of all, the project looks very impressive and I already see some great looking proto builds

I hear the first round of CHT kits are starting to roll in and I'm also eagerly anticipating delivery of my SOHA II kit from glassjar. By the looks of it they just might get built at the same time

Advice needed: I've only built a cmoy and 2 starving students. Let's just say I have both SOHA II and CTH kits on hand, which project would you recommend I tackle first and why?

Also, the CTH populated board appears quite 'tight'. In terms of socketing, which components (if any) would most recommended remain socketed vs. permanently soldered on the board, (as well as test points during initial setup or during troubleshooting)? thanks.

zk

Definitely the CTH I would think..Just so long as you make sure you populate everything correctly, the amp should work on turn on. While the board is tight, stuffing the board of all the 175 components should be about a days' job at most..

One piece of advice I can give you is, if you see yourself getting fidgety or frustrated while soldering, lay your soldering iron down and take a break..you are likely to mess things up a lot more if you are all pissed off.

The ones I had socket were, R14/R15 and R13...I know some folk have installed SIPS for the coupling capacitors so they can try out different ones..if that is your thing then installing SIPS there may be a good idea.


I will let runeright chime in on which components that may be a good idea to socket.
post #499 of 2213
Can you give a link to the SIPS you use?
post #500 of 2213
Quote:
Originally Posted by scompton View Post
Can you give a link to the SIPS you use?
Here you go SIP sockets
post #501 of 2213
Quote:
Originally Posted by sachu View Post
Here you go SIP sockets
Larger caps / resistors require bigger sized holes then the 310-13-120-41-001000. I got these SIPS and had to "sharpen" the legs of some parts to get them to fit. Though the holes on the board accepts them fine, so no worry's for onboard soldering.
post #502 of 2213
Zcool - I'd actually recommend building the SOHA II first. It's a larger scale build with all the components sections of the CTH (HV/LV PS, tube input, discrete buffer, e12) with an intermediate parts count and more room to maneuver. Follow the schematic for the build and you'll have a very good idea of how the CTH will go together. In 1/3rd the board real estate!

HOWEVER, judging form your SS case work, you seem to have a level of attention to detail that would serve well whether you built either first or both simultaneously.
post #503 of 2213
Quote:
Originally Posted by keyid View Post
Larger caps / resistors require bigger sized holes then the 310-13-120-41-001000. I got these SIPS and had to "sharpen" the legs of some parts to get them to fit.
These are also the SIPS I use. Resistors (RN55s) were no problem for me to socket...

I don't know if socketing caps is recommended... But I'm sure some will try it!
post #504 of 2213
I socketed the C4 (coupling) caps, and it seems to be working fine with WIMA's, although there have been "issues" with some of the high end Caps.. I haven't tried the Sonicaps I ordered for it..
post #505 of 2213
Looks like I have another project after my PPA and Bijou!
post #506 of 2213
Final pics of my prototype CTH build..

Isn't it puurty









The CA is my way of paying tribute to the design house that created the amp..Cavalli Audio.

CTH in Star Wars font for the amp..serving dual purpose..

Nice convection air currents between the two sets of holes to cool her down so she doesn't burn herself from her hot sexy self.
post #507 of 2213
Quote:
Originally Posted by sachu View Post
Final pics of my prototype CTH build..
Isn't it puurty
Yes it is... Much better than your previous pics of it
Have to say that's one big momma of a knob on that little pot... Bet you didn't have any RK27s around...
post #508 of 2213
Quote:
Originally Posted by cfcubed View Post
Yes it is... Much better than your previous pics of it
Have to say that's one big momma of a knob on that little pot... Bet you didn't have any RK27s around...
..yeah much better now..
True, I would have used an RK27 if I had one..Will put in a stepped attenuator in the next one..or an RK27 depending on the budget...but the knob is sooo shiny..me like it a lot..
post #509 of 2213
OK I want to see someone stuff a stepped attenuator in a 1455K1601 box..
post #510 of 2213
Quote:
Originally Posted by sachu View Post
..yeah much better now..

You know what they say: The difference between an amateur and a professional? A professional knows how to cover their mistakes!
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