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CarverFest 20w Tube Amp Schematics & Pictograms

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mbskeam

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SILVER-7t

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Location: Woodinville Wa

Post Fri Sep 30, 2011 11:33 am

Re: CarverFest 20w Tube Amp Schematics & Pictograms

dont forget the +/- on the caps..... :D
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"
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TNRabbit

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(pair of) SILVER-7 TUBE AMPs

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Post Fri Sep 30, 2011 11:52 am

Re: CarverFest 20w Tube Amp Schematics & Pictograms

mbskeam wrote:dont forget the +/- on the caps..... :D


So how do you tell the difference? are you talking about the smal, black ones, or the turd-colored ones?
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
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BillD

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(pair of) SILVER-7 TUBE AMPs

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Post Fri Sep 30, 2011 12:41 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

There is a line on both axial and radial caps. On radials, it is on the side of the negative lead (which is shorter than the positive lead). On axials, it has arrows on it that point to the negative lead. There are also other ways.
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Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer
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engtaz

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Post Fri Sep 30, 2011 12:53 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

FYI: no, the question pertains to the drawing. is what he meant. Thanks Bill
engtaz


Carver M4.0T in front channels to Caver AL VI's in SACD & 2 Channel setup
C 16, PT 2400, Slim Device, Carver TX-8, 490T and Rega TT w Grado Gold cart in the 2 channel setup
Bogen SRB20 is computer amp
Carver PM-350 donated for youth church use
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angelod307

SILVER-7 TUBE AMP

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Post Sat Oct 01, 2011 9:42 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

good work there alex. hey, next time you chat with bob, ask him for me if the tube amp will run the 60" ribbons full range without issue. the ribbons are a 4.3 ohm load but it could be purely resistive if that makes a differance on the amp. bob said this of his little ribbons, so i would think the big ones would be no different. on the 300x2, i like the sound of the one ohm resistors in the amp. shiit, it ran the new ones without issue, i just wanna double check though as i an not the bobfather when it comes to these matters. thanks,
CarverFest: I just go for the arts and crafts
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radioeng2

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Post Sat Oct 01, 2011 10:23 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

Angelo,

In tube amps, loading like this won't do any harm, just a little more distortion quicker. It does not risk fire, flame, letting the magic smoke out and fried tweeters like in SS.

Convential tube amps have output transformers. The loading on one side is reflected to the other side. It's always a ratio from in to out. They're designed for an anticipated load, it's not an impedance that they present. So when you change the load on the speaker side, it reflects this change to the tube load. As you know, speakers load changes by frequency anyway. All over! So as you suspect, a ribbon's uniform load has some advantages in that it will remain at the spec and not swing all over.

By presenting a stiffer load you'll be moving the tube a bit away from it's swe-etest spot, which Bob would have presumably design the amp to run in. Stiffer load means higher power demanded and higher distortion, lighter load means lower power, less distortion.

The more traditional output xfrm loading is to use about a 7.6K load or so for a PP EL84. Bob opted for what he thought sounded nicer and went with 10K OPT. So I'd suspect you'll move a bit off the swe-etest spot, but probably not be loaded so, so different from what's more typical on the EL84.

So have no fear, just be aware that as you push up in level, the waveform will start to flatten out as the amp runs out of ability to go there. It doesn't tax the amp though in a way that causes harm...just can reach the point where it gets less pleasing.

That's the word, until you get the official word...

Mark
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AlexSauter

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Post Wed Dec 07, 2011 10:10 am

Re: CarverFest 20w Tube Amp Schematics & Pictograms

Everyone that needs the Zener mod, here it's!! You have to put them in PARALLEL rather than in series.



Image

I don't know if everyone can see this link, I will try to do better tomorrow, this is as good as I can do on my iPad... ](*,)
http://www.facebook.com/photo.php?fbid= ... e=1&ref=nf
RIP BillD
BillD wrote:Well, some people are glass half empty people and some are glass half full. Being an engineer, I just think the glass is the wrong size.


My system (sitting in the garage):

(Stereo System)
Modified Carver AL III+'s (Pushed into the corners to make room for the ALS speakers)
Modified CarverFest 2011 20w tube amplifier
Carver Pro PT-1800
Sunfire Prototype TGA-2375
Carver TX-2 Tuner (not used)
Logitech Squeezebox (replaced Tuner & dad's CD player)
CARVERaudio Directional RCA interconnects
RCA-Headphone jack for iPod & iPhone
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angelod307

SILVER-7 TUBE AMP

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Location: manning, sc

Post Wed Dec 07, 2011 3:17 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

ok, so the diodes i bought a hundred of, everyone needs two per amp now, correct?
CarverFest: I just go for the arts and crafts
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AlexSauter

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Post Wed Dec 07, 2011 4:08 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

angelod307 wrote:ok, so the diodes i bought a hundred of, everyone needs two per amp now, correct?



Yessir!!
RIP BillD
BillD wrote:Well, some people are glass half empty people and some are glass half full. Being an engineer, I just think the glass is the wrong size.


My system (sitting in the garage):

(Stereo System)
Modified Carver AL III+'s (Pushed into the corners to make room for the ALS speakers)
Modified CarverFest 2011 20w tube amplifier
Carver Pro PT-1800
Sunfire Prototype TGA-2375
Carver TX-2 Tuner (not used)
Logitech Squeezebox (replaced Tuner & dad's CD player)
CARVERaudio Directional RCA interconnects
RCA-Headphone jack for iPod & iPhone
<<

treitz3

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"Julian"
"Julian"

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Joined: Mon Oct 16, 2006 5:39 pm

Location: The tube lair in Charlotte, NC

Post Wed Dec 07, 2011 4:46 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

Angelo, it looks like I will be needing two pair [I have two amps].
In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence.

The best way to enjoy digital music reproduction is to never listen to a good analogue reproduction.

Robert R. - "Did you see my North Korea analogy? I should have named it Carversite.kim"
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mbskeam

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Location: Woodinville Wa

Post Wed Dec 07, 2011 6:25 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

just to clarify, what is the voltage of the diodes?
started out at 7.5v then to 15v.

can ya post the email or pm, for the said change, did Bob say why, for this change??????
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"
<<

TNRabbit

User avatar

(pair of) SILVER-7 TUBE AMPs

Posts: 13293

Joined: Sun Jan 14, 2007 11:53 am

Location: TN Native Languishing in VA

Post Thu Dec 08, 2011 9:42 am

Re: CarverFest 20w Tube Amp Schematics & Pictograms

AlexSauter wrote:Everyone that needs the Zener mod, here it's!! You have to put them in PARALLEL rather than in series.



Image

I don't know if everyone can see this link, I will try to do better tomorrow, this is as good as I can do on my iPad... ](*,)
http://www.facebook.com/photo.php?

Alex, you're a sick fuck..posting your tiny zener for all to see......
:lol:











fbid=286841358020412&set=a.145256475512235.15449.100000836504830&type=1&ref=nf
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
<<

frenchguy

SILVER-7t

Posts: 1502

Joined: Fri May 14, 2010 11:53 pm

Location: wisconsin,home of the Green Bay Packers!

Post Thu Dec 08, 2011 9:48 am

Re: CarverFest 20w Tube Amp Schematics & Pictograms

so which one is the zener? Im not a electronics whiz!! :lol:
Carver M-4.0t & Rollandized tfm42, ct-6 & ct-17, sda390t, jolida jd 100A & JBL L96,s Modified JBL 4401,s W/Ribbon Tweeters, Carverfest vacuum tube amp & Dared SL-2000A tube preamp, Carver AL3 amazing speakers in natural oak & Douglas connection cables
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angelod307

SILVER-7 TUBE AMP

Posts: 2693

Joined: Sat Jun 06, 2009 10:56 pm

Location: manning, sc

Post Mon Dec 02, 2013 4:45 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

Ok, i forget where the 12ax7 heater conversion is for the amps. Help.schematic or photo please.
CarverFest: I just go for the arts and crafts
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mbskeam

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SILVER-7t

Posts: 1953

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Mon Dec 02, 2013 8:38 pm

Re: CarverFest 20w Tube Amp Schematics & Pictograms

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"
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