FAQ  •  Register   •  Gallery •  Login

It is currently Wed Oct 01, 2014 12:59 am

DIY tube amps

<<

tkd.teacher

Newbie 50+

Posts: 73

Joined: Mon Feb 17, 2014 2:16 pm

Post Sun Feb 23, 2014 5:28 pm

Re: DIY tube amps

hewlew1 wrote:John, You should make a Carverfest amp all of the schematics are available on this site, and essential iron is available from Edcor. Other than that the rest of the parts are readily available.A lot of us here have these already and would be able to answer your questions as well as provide direction on assembling it. 20 watts per channel in stereo or a 40 watt monoblock. A very vice little amp!


Where are the schematics?

John
<<

angelod307

SILVER-7 TUBE AMP

Posts: 2713

Joined: Sat Jun 06, 2009 10:56 pm

Location: manning, sc

Post Sun Feb 23, 2014 5:30 pm

Re: DIY tube amps

Schematics are Everywere on this site to a degree.

http://carveraudio.com/phpBB3/viewforum.php?f=136
CarverFest: I just go for the arts and crafts
<<

tkd.teacher

Newbie 50+

Posts: 73

Joined: Mon Feb 17, 2014 2:16 pm

Post Sun Feb 23, 2014 5:35 pm

Re: DIY tube amps

angelod307 wrote:Schematics are Everywere on this site to a degree.

http://carveraudio.com/phpBB3/viewforum.php?f=136


I found the link with the images for the 20w fest amp, but the images didn't survive the transition evidently.

John
<<

hewlew1

"You Fuckin' Fucks"

Posts: 1257

Joined: Tue Feb 17, 2004 11:02 pm

Location: Northeast, Pa

Post Sun Feb 23, 2014 6:18 pm

Re: DIY tube amps

I see what you mean john I can not find any info no matter what I click on.
"Carver Audio, why settle for less, just ask my neighbors"
C1,C2,CT3,CT6,CT7/3,CT23,CT26,C4000,The Receiver,M500,M500T/6,M1.5T,TFM24/2,TFM/25/2,TFM35,TFM35X,TFM/42,DTL200,TDR1700,DPL20,TX11,5.2Center,5.1Sub/3,Original Amazings,Platinum Amazings/2,AL3'S,Polk SDA SRS, Polk SDA 1C's, Polk RTA11's, Polk Monitor 10's,Monitor 7's, Sunfire 300x2 /5, Sunfire pre, Sunfire MK2 Sub, 4 Carverfest monoblocks, Mapletree Audio Designs Tube Preamp,Phase Linear Andromeda III speakers, Phase Linear 4000 Preamp, Dahlquist DQ-10's
CERTIFIED AMPLE PLIERS EXPERT
Some of the best fuckings we get during our lifetime will come from a relative!
I don't kiss ass and I dont take peoples shit, so dont expect it from me!
<<

bob p

User avatar

SILVER-7t

Posts: 1340

Joined: Wed Jul 18, 2007 10:40 pm

Location: Chicago

Post Sun Feb 23, 2014 6:55 pm

Re: DIY tube amps

I looked for them too and I had the same result -- nothing.

This happens a lot when forum databases get moved from one site to another. It's not at all uncommon for someone to miss moving an image directory from one site to the next while maintaining it in the same relative path on one machine vs. the other.

I think that the attachments folder failed to get copied over in the transition, and now all of the file pointers in the message database are pointing to non-existent images in a non-existent folder. if we're lucky, maybe James can restore that directory to the proper relative path location?
Carver Preamps: C-1, C-2, BillD's JVD-modded C-4000, C-9
Carver Amplifiers: BillD's C-500, M-1.5t (4) PM-1.5 (4) M-500t (2)
Repair/Restoration/Upgrade expert for all of these components.
<<

tkd.teacher

Newbie 50+

Posts: 73

Joined: Mon Feb 17, 2014 2:16 pm

Post Sun Feb 23, 2014 7:40 pm

Re: DIY tube amps

bob p wrote:I looked for them too and I had the same result -- nothing.

This happens a lot when forum databases get moved from one site to another. It's not at all uncommon for someone to miss moving an image directory from one site to the next while maintaining it in the same relative path on one machine vs. the other.

I think that the attachments folder failed to get copied over in the transition, and now all of the file pointers in the message database are pointing to non-existent images in a non-existent folder. if we're lucky, maybe James can restore that directory to the proper relative path location?


That's kind of what I figured, either a config problem or just missed a folder. I found a few other images that weren't available either.

John
<<

mbskeam

User avatar

SILVER-7t

Posts: 1983

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Sun Feb 23, 2014 8:56 pm

Re: DIY tube amps

Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
<<

mbskeam

User avatar

SILVER-7t

Posts: 1983

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Wed Feb 26, 2014 7:07 pm

Re: DIY tube amps

Image

Image

Image

Image

Image

Image
Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
<<

tkd.teacher

Newbie 50+

Posts: 73

Joined: Mon Feb 17, 2014 2:16 pm

Post Wed Feb 26, 2014 7:27 pm

Re: DIY tube amps

Awesome, thank you very much!

I am assuming that someone who knows how to read schematics can glean a parts list out of those diagrams?

And where do you source the case for it? Any generic 6 tube case?

John
<<

hewlew1

"You Fuckin' Fucks"

Posts: 1257

Joined: Tue Feb 17, 2004 11:02 pm

Location: Northeast, Pa

Post Wed Feb 26, 2014 7:38 pm

Re: DIY tube amps

John, you don't need a case if you don't want one. All you need is a piece of plate aluminum or steel if you wish and a step drill to make the holes for the tube sockets. The rest could be made with wood which you would set the plate material into. which would provide the depth to mount the components underneath.
"Carver Audio, why settle for less, just ask my neighbors"
C1,C2,CT3,CT6,CT7/3,CT23,CT26,C4000,The Receiver,M500,M500T/6,M1.5T,TFM24/2,TFM/25/2,TFM35,TFM35X,TFM/42,DTL200,TDR1700,DPL20,TX11,5.2Center,5.1Sub/3,Original Amazings,Platinum Amazings/2,AL3'S,Polk SDA SRS, Polk SDA 1C's, Polk RTA11's, Polk Monitor 10's,Monitor 7's, Sunfire 300x2 /5, Sunfire pre, Sunfire MK2 Sub, 4 Carverfest monoblocks, Mapletree Audio Designs Tube Preamp,Phase Linear Andromeda III speakers, Phase Linear 4000 Preamp, Dahlquist DQ-10's
CERTIFIED AMPLE PLIERS EXPERT
Some of the best fuckings we get during our lifetime will come from a relative!
I don't kiss ass and I dont take peoples shit, so dont expect it from me!
<<

bob p

User avatar

SILVER-7t

Posts: 1340

Joined: Wed Jul 18, 2007 10:40 pm

Location: Chicago

Post Wed Feb 26, 2014 7:53 pm

Re: DIY tube amps

So when you guys build this amp, how are you tuning the bias?

Are you:
a) measuring cathode current and swapping cathode resistors to tune the idle bias current, or
b) ordering spec'd tubes that have been binned according to their bias requirements, or
c) not worrying about it
Carver Preamps: C-1, C-2, BillD's JVD-modded C-4000, C-9
Carver Amplifiers: BillD's C-500, M-1.5t (4) PM-1.5 (4) M-500t (2)
Repair/Restoration/Upgrade expert for all of these components.
<<

mbskeam

User avatar

SILVER-7t

Posts: 1983

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Wed Feb 26, 2014 8:13 pm

Re: DIY tube amps

C
Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
<<

bob p

User avatar

SILVER-7t

Posts: 1340

Joined: Wed Jul 18, 2007 10:40 pm

Location: Chicago

Post Wed Feb 26, 2014 8:15 pm

Re: DIY tube amps

OK, next question: why are you using zeners to bypass caps instead of resistors?
Carver Preamps: C-1, C-2, BillD's JVD-modded C-4000, C-9
Carver Amplifiers: BillD's C-500, M-1.5t (4) PM-1.5 (4) M-500t (2)
Repair/Restoration/Upgrade expert for all of these components.
<<

angelod307

SILVER-7 TUBE AMP

Posts: 2713

Joined: Sat Jun 06, 2009 10:56 pm

Location: manning, sc

Post Wed Feb 26, 2014 8:17 pm

Re: DIY tube amps

I will also be selling some of these amps for hopefully more than not in the near future.
CarverFest: I just go for the arts and crafts
<<

angelod307

SILVER-7 TUBE AMP

Posts: 2713

Joined: Sat Jun 06, 2009 10:56 pm

Location: manning, sc

Post Wed Feb 26, 2014 8:20 pm

Re: DIY tube amps

bob p wrote:OK, next question: why are you using zeners to bypass caps instead of resistors?



With ten amps, i notice that the idle voltage varies, while a few are around 420, others are up to 455. My friend tubular joe came to us with a solution to help keep tubes from running away. What would be another way of making this safer for the tubes bob?
CarverFest: I just go for the arts and crafts
PreviousNext

Return to Misc. Discussions

Who is online

Users browsing this forum: No registered users and 1 guest

Powered by phpBB © 2011 phpBB Group.