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A Very Compact Hybrid Amp - Page 106

post #1576 of 2213
Quote:
Originally Posted by Billyk View Post
I put a Dead show on, plug in my IEMs and I'm good to go.
Darn, this is way to much fun!
I like your technique!

post #1577 of 2213
Quote:
Originally Posted by Ynis Avalach View Post
Is there anyone out there who has screened the leads of C4R and C4L? And if how?
Screen must be connected to SG, or not?
Greetz Ava
IIRC keyid shielded his C4 leads (see CTH Tweaks thread a couple/few pages back about caps). Think its usually found unnecessary, esp if you keep the leads as short as possible. Shield would just go to ground plane / SG.

Are you experiencing a problem that you think screen/shield would fix?
post #1578 of 2213
Quote:
Originally Posted by cfcubed View Post
Are you experiencing a problem that you think screen/shield would fix?

No, but the shield is already on the leads, but thank you anyway.

post #1579 of 2213
nice s/g, I have s/o on the CTH they sound great. My leads are about 6" long and covered in copper, I would get humming otherwise.
post #1580 of 2213
Quote:
Originally Posted by keyid View Post
nice s/g, I have s/o on the CTH they sound great. My leads are about 6" long and covered in copper, I would get humming otherwise.
Sadly this beatiful bonnet from wiatrob won't close now.
I know those s/g are massive overkill, I didn't wanted them in the first place, but because I order some meters of the s/g cable there was confusion in the shop and they ordered s/g. Damn those caps are expensive! If this goes on like this my cth will cost more than my b22 built!

How did you stuff this all in one case, did you use the BOM case, I've got the 16" standard hammond?
post #1581 of 2213
Ynis - there may be some European Head-fi'ers who'd take the caps off your hands.

I imagine they are like Russian teflons - too big to fit in the case. The obligatos were the biggest i could squeeze into the BoM case and get the lid on.

I got my loaner build back (Thanks Naamanf!) and put some horizontally mounted Soniccap GenIIs in. Burning in now...
post #1582 of 2213
Reviews/comments seem to favor Auricaps too... They are the largest I've seen that seem to fit in BoM case.
post #1583 of 2213
actually mines not cased yet and the caps are hanging in the air. Im still modifying the CTH and probably going to casing in a larger box. I was thinking of cutting two holes so that the caps are halfway exposed.
post #1584 of 2213
post #1585 of 2213
I don't know if it's a problem, but this is my first tube project, so I thought better do it right.^^

Everytime I power up my CTH with a Tungsram ECC82 the tube lights up like a light bulb, not extreme, but quite bright. Is this something to worry about?
Everything seems to work otherwise. It sounds terrific!

Any help much apreciated!
Greetz Ava
post #1586 of 2213
Have you measured the heater voltage?
post #1587 of 2213
Thread Starter 
Quote:
Originally Posted by Ynis Avalach View Post
I don't know if it's a problem, but this is my first tube project, so I thought better do it right.^^

Everytime I power up my CTH with a Tungsram ECC82 the tube lights up like a light bulb, not extreme, but quite bright. Is this something to worry about?
Everything seems to work otherwise. It sounds terrific!

Any help much apreciated!
Greetz Ava
Does it only do this when it first turns on? Or does it stay this way continously?

If just at startup, this is normal for many European tubes.
Dr. Cavalli gained notoriety with his first DIY amplifier projects. His success has blossomed into Cavalli Audio, a world leader in amplifier design.
Reply
post #1588 of 2213
No just for the first halt of a second and then darkens during one second.
Heater voltage is perfectly fine.
Thank you!
post #1589 of 2213
Quote:
Originally Posted by Ynis Avalach View Post
No just for the first halt of a second and then darkens during one second.
Heater voltage is perfectly fine.
Great. Glad to hear "It sounds terrific!" too. That's a nice looking build there (neatness of wiring, etc) and some monster C4 caps

BTW, I think when I noticed this < 1 sec of brightness at power on for some tubes I found it was the LED below the tube, not the filament itself.
post #1590 of 2213
Quote:
Originally Posted by Ynis Avalach View Post
No just for the first halt of a second and then darkens during one second.
Heater voltage is perfectly fine.
Thank you!
As runeight says, some tubes flash brightly when they turn on.
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