Final parts for fest amps.

Carver Tube Equipment Discussions
User avatar
Magnaryder
SILVER-7 TUBE AMP
Posts: 3125
Joined: Fri Mar 09, 2007 1:00 am
Location: Bucyrus, Ohio

Re: Final parts for fest amps.

Post by Magnaryder » Fri Feb 14, 2014 9:52 pm

angelod307 wrote:So the amps are complete short a on/off power switch. Now for a variac to turn them on.

So...how do they sound?

ray
Magnaryder

Its going to be used equipment when I sell it, so it may as well be used equipment when I buy it.

"Racing is life, the rest of the time you're just sitting around."-Steve McQueen

angelod307
SILVER-7 TUBE AMP
Posts: 2669
Joined: Sat Jun 06, 2009 10:56 pm
Location: manning, sc

Re: Final parts for fest amps.

Post by angelod307 » Sun Feb 16, 2014 2:09 am

Every amp thus far is great. No issue so far.
CarverFest: I just go for the arts and crafts

User avatar
BrianT
Pair of Silver Sevens
Posts: 1895
Joined: Sat Oct 11, 2008 4:51 pm
Location: Ottawa, Canada

Re: Final parts for fest amps.

Post by BrianT » Sun Feb 16, 2014 8:50 am

angelod307 wrote:Brain, george, i got you covered. Anybody else?
Angelo.

Thanks that sounds good, I will bring my amp to CF14
Should I be thinking of upgrading the caps, if so what should I be looking at.

Brian
VPI Classic Turntable (black)
Transfiguration Phoenix Cartridge
Devialet 440PRO Mono Blocks
Audioprana SP/DIF-AES/EBU cable
Auralic Aires G2 Music Server
Audience AU24 USB cable
B&W 803D3 Speakers (black)
Auditorium 23 Speaker Cables
Raysonic CD-168 CDP (silver)
Carver TX11

User avatar
Magnaryder
SILVER-7 TUBE AMP
Posts: 3125
Joined: Fri Mar 09, 2007 1:00 am
Location: Bucyrus, Ohio

Re: Final parts for fest amps.

Post by Magnaryder » Sun Feb 16, 2014 5:17 pm

BrianT wrote:
angelod307 wrote:Brain, george, i got you covered. Anybody else?
Angelo.

Thanks that sounds good, I will bring my amp to CF14
Should I be thinking of upgrading the caps, if so what should I be looking at.

Brian
Power supply or audio path? Take a look at my CF amp mod thread. Lots of good ideas from alot of folks.

ray
Magnaryder

Its going to be used equipment when I sell it, so it may as well be used equipment when I buy it.

"Racing is life, the rest of the time you're just sitting around."-Steve McQueen

User avatar
BrianT
Pair of Silver Sevens
Posts: 1895
Joined: Sat Oct 11, 2008 4:51 pm
Location: Ottawa, Canada

Re: Final parts for fest amps.

Post by BrianT » Sun Feb 16, 2014 5:34 pm

Magnaryder wrote:
Power supply or audio path? Take a look at my CF amp mod thread. Lots of good ideas from alot of folks.

ray
Ray

I'm to fucking lazy, please tell me what I need.

Brian
VPI Classic Turntable (black)
Transfiguration Phoenix Cartridge
Devialet 440PRO Mono Blocks
Audioprana SP/DIF-AES/EBU cable
Auralic Aires G2 Music Server
Audience AU24 USB cable
B&W 803D3 Speakers (black)
Auditorium 23 Speaker Cables
Raysonic CD-168 CDP (silver)
Carver TX11

User avatar
radioeng2
SILVER-7 TUBE AMP
Posts: 2701
Joined: Fri Jan 26, 2007 7:06 pm
Location: E TN

Re: Final parts for fest amps.

Post by radioeng2 » Sun Feb 16, 2014 5:43 pm

BrianT wrote: Ray

I'm to fucking lazy, please tell me what I need.

Brian
I'd tell you the same as I told Ray. Do the audio (1st ones to do) coupling caps (those brown ones), the cathode caps (in the drawings below the input tubes) and a final PS one as starters.

Mark
I was there "At the Fest!" Hope you were too!

User avatar
Zoot Horn
SILVER-7 TUBE AMP
Posts: 3592
Joined: Thu Nov 15, 2007 7:26 pm
Location: 4th Tower of Inverness

Re: Final parts for fest amps.

Post by Zoot Horn » Sun Feb 16, 2014 7:19 pm

I did as Mark suggested-- it's is simple(has ti be,I did it),,well worth the effort.

User avatar
Magnaryder
SILVER-7 TUBE AMP
Posts: 3125
Joined: Fri Mar 09, 2007 1:00 am
Location: Bucyrus, Ohio

Re: Final parts for fest amps.

Post by Magnaryder » Mon Feb 17, 2014 11:00 pm

BrianT wrote:
Magnaryder wrote:
Power supply or audio path? Take a look at my CF amp mod thread. Lots of good ideas from alot of folks.

ray
Ray

I'm to fucking lazy, please tell me what I need.

Brian
Brian, that's the funniest thing I've heard today.

'I' think the most bang for your buck is to change the .1uf caps. Each amp requires 4 of them.

George rolled in some Auri's and Russian Teflons, I used Obbligattos. Last time I spoke to George he mentioned preferring the Auricaps. You've used Deulands in the Silver 7s, if you liked them, give the Alexanders a try.

Mike Beam modded my power supply to lower the voltage into the range allowing use of the EL84/6BQ5s. The El84s are more reasonably priced. Beemers has a set of Telefunken 7189s in his CF amp. I listened to it quite a bit my last trip out to VHoP and they sound great. Still a lot of $$ in the Teles.

Link to the CF amp nod thread:
viewtopic.php?f=8&t=17835


The mods I made were a bit more involved. I installed Mills resistors in the audio path, upgraded all of the power supply caps, DH labs silver over copper wire on the input side and the same running between the power tubes and output transformers and from output trannies to speaker terminals. All of the power tubes are Hammond EL84s, driver tubes are vintage 6ax7s. I rolled some Telefunken EL84s, motherfuckers sound great although not enough better than the Hammonds to make me want to spend the dosh to acquire 2 complete sets. I'll give up the slightest bit of bloom of the Teles to get the soundstaging of the Hammonds.

Al has a set of TAD EL84 and IIRC, he likes them.

If you read the CF mod thread you'll notice I tried to describe the incremental changes I heard while making the modifications, which I hoped might make it easier for those following me to decide what mods would make the most sense for them to do based on what they like to hear. I used my Lightstar Reference 2.0 as benchmark to evaluate my progress. The Cf amp faired well....until the volume went WAAY up. There's no substitute for cubic horsepower. And after some coaxing the bass fleshed out nicely.

Point is: roll in a .1uf 630volt (or greater voltage) cap. I would not increase the farad value of the cap. My very limited understanding is the amplifier can become unstable. Decreasing the value limits bass response...or so I'm told.

Mark will be around in a minute to comment and let you know if there are any other considerations you might want to think about or if I left anything out. Oh yeah, make certain all of the caps have discharged. I could taste my fillings for a week. There's 508 volts coming off that 390uf power supply cap. Tasty!!

ray

Post Reply

Return to “Carver Tubes”