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Dan Devin's System

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DANDEVIN

Newbie

Posts: 6

Joined: Fri Apr 09, 2010 2:03 am

Post Fri Apr 09, 2010 2:55 am

Dan Devin's System

A little bird flew in my window tonight and told me that some members of this forum were making comments about me-so I joined, so that I can personally point out all of their many shortcomings..

Too tired now-will finish this later.

Remember: it's all about the music.
tractor,amps,ttable 455.jpg
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tbles 150.jpg
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tractor,amps,ttable 449.jpg
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tractor,amps,ttable 452.jpg
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TNRabbit

User avatar

(pair of) SILVER-7 TUBE AMPs

Posts: 13373

Joined: Sun Jan 14, 2007 11:53 am

Location: TN Native Languishing in VA

Post Fri Apr 09, 2010 3:46 am

Re: Dan Devin's System

Welcome, Dan!

I can't quite make out those pics; can you make them any BIGGER??

Turntable looks familiar, though...

:lol:
Last edited by TNRabbit on Fri Apr 09, 2010 5:51 am, edited 1 time in total.
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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engtaz

User avatar

"TAZ"

Posts: 5253

Joined: Sat Jun 30, 2007 1:43 pm

Location: Tampa, FL

Post Fri Apr 09, 2010 4:24 am

Re: Dan Devin's System

Welcome Sweet rig.
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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nooshinjohn

SILVER-7t

Posts: 1721

Joined: Fri Jan 30, 2009 8:54 pm

Post Fri Apr 09, 2010 6:17 am

Re: Dan Devin's System

Chirp chirp!!!



Welcome to the jungle Dan!


John
Carver Statement Reference Monoblocks!!!The Gear... Carver "Statement" Monoblocks, Polk Audio "Signature" Reference Series 1.2TL with complete mods, Polk audio AB700/800 "in-wall" surrounds, Dodd Audio MLP, Pioneer Elite SC-65, Peachtree I-DAC, Oppo BDP-93, Yamaha PX-3 Turntable, with Sumiko BPS EVOIII, Pioneer PDD 9MkII SACD Player, SimAudio moon 110lp phono preamplifier.[/size]
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DANDEVIN

Newbie

Posts: 6

Joined: Fri Apr 09, 2010 2:03 am

Post Fri Apr 09, 2010 8:24 am

Re: Dan Devin's System

nooshinjohn wrote:Chirp chirp!!!



Welcome to the jungle Dan!


John


Thank you for the warm welcome gentlemen!

As I have never advanced technologically past the Vacuum Tube Era can anyone tell me why my pictures are showing up so large and what I need to do to get them to the appropriate size?
It would be greatly appreciated!
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thuffman03

User avatar

!! CarverFest Evictee !!

Posts: 2706

Joined: Fri Sep 19, 2008 10:07 am

Location: Pittsburgh, PA

Post Fri Apr 09, 2010 8:58 am

Re: Dan Devin's System

Welcome to the forum Dan. Those are some very interesting amps you have. Bet they make those Plats sing!
Some cool Carver stuff!
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peck555

User avatar

TFM-6cb

Posts: 211

Joined: Tue Sep 01, 2009 1:36 pm

Location: White Plains, NY

Post Fri Apr 09, 2010 9:40 am

Re: Dan Devin's System

Welcome to the forum.
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TNRabbit

User avatar

(pair of) SILVER-7 TUBE AMPs

Posts: 13373

Joined: Sun Jan 14, 2007 11:53 am

Location: TN Native Languishing in VA

Post Fri Apr 09, 2010 10:01 am

Re: Dan Devin's System

thuffman03 wrote:Welcome to the forum Dan. Those are some very interesting amps you have. Bet they make those Plats sing!


The speakers in the pic are Original ALS, not Plats~ :-"
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.
<<

thuffman03

User avatar

!! CarverFest Evictee !!

Posts: 2706

Joined: Fri Sep 19, 2008 10:07 am

Location: Pittsburgh, PA

Post Fri Apr 09, 2010 10:11 am

Re: Dan Devin's System

TNRabbit wrote:
thuffman03 wrote:Welcome to the forum Dan. Those are some very interesting amps you have. Bet they make those Plats sing!


The speakers in the pic are Original ALS, not Plats~ :-"


I stand corrected. :-#
Some cool Carver stuff!
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Toy Maker

User avatar

Puppet Master

Posts: 6584

Joined: Wed Oct 08, 2003 1:26 am

Post Fri Apr 09, 2010 11:12 am

Re: Dan Devin's System

Greetings, and Welcome !!!

So please explain the home grown Silver-7 amps ???
Where did you get the parts, and who built them ?

Welcome again,

James
Whatever you do in life will be insignificant, but it's very important that you do it... because nobody else will.

‎~You think Einstein walked around thinkin' everyone was a bunch of dumb shits?~

SHUT UP AND ENJOY THE MUSIC!
╭∩╮(︶︿︶)╭∩╮

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Zoot Horn

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SILVER-7 TUBE AMP

Posts: 3273

Joined: Thu Nov 15, 2007 7:26 pm

Location: 4th Tower of Inverness

Post Fri Apr 09, 2010 5:58 pm

Re: Dan Devin's System

yep,, proceed sir,, inquiring minds want to know. :-k
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DANDEVIN

Newbie

Posts: 6

Joined: Fri Apr 09, 2010 2:03 am

Post Fri Apr 09, 2010 6:15 pm

Re: Dan Devin's System

TNRabbit wrote:
thuffman03 wrote:Welcome to the forum Dan. Those are some very interesting amps you have. Bet they make those Plats sing!


The speakers in the pic are Original ALS, not Plats~ :-"


Thank you for your warm greeting. Yes, these amps are very special and the result of an intense labor of love. I am receiving a lot of interest regarding their design, etc. so let me go ahead and clear the air.

I built these around a dozen years, or so, ago with the extremely knowledgeable assistance of a very good friend of mine, Kevin Carter, who is one of the truly great tube audio designers in the world. Kevin has been the designer of many premier products but has preferred to work behind the scenes and avoid all of the complications that go with being a frontman. He has designed , and sometimes produced, some highly acclaimed products for companies such as ART AUDIO and VAC. and is the mentor and teaching guru for many enthusiasts in our area. His Art Audio Reference Phono Pre-amp is without peer. I know because the prototype is in my system! Kevin actually holds a Doctorate in Bio-Chemistry, of all things, and was a founder and VP of an international environmental testing company, which he retired from some years ago to commit himself full time to his first love, audio. He is the US distributor for Lundahl transformers and sells some very fine audio kits under the business name of K and K Audio. Google his site. A refreshingly brilliant guy who is at peace with himself enough to leave his ego in the closet.

Anyway, I told Kevin that I wanted to build the greatest amps in the world and to keep an eye out for the building blocks for the project. He called me one day and said that he had found some surplus Carver transformers at an electronics supplier in Seatle. So being me, I bought the biggest damn sets that they had. Kevin designed the circuitry in accordance to the parameters that I had set my sights on, tempered by his experience and advice, and I went to work on chassis design and layout.

The ideal match for the Shumacher transformer specs was actually 20 tubes, and as I wanted a very high damping factor also, that was the number of output tubes chosen per mono-block.
The front end is basically a classic long-tail Mullard circuit with a twist. Instead of using a resistor at the end of the tail, we used a depletion mode mosfet which provided the ideal infinite resistance needed for perfect linearity. Rectification was accomplished via high speed Hexfreds for maximum dynamic capability. For the front end we used my favorite, the 5692(6SN7) and used the ballsy 6BX7 for the driver. The stage coupling is accomplished with a very high quality Lundahl transformer which allowed us to keep any capacitors out of the direct signal path, which our experience had showed to always induce some sort of coloration. The output is choke filtered and all of the power supply capacitance is provided by a massive battery of polypropylene film and foil capacitors, part of which are umbilicalled in an outboard case. There are no electrolytics anywhere in the amps. All resistors are either Holco's or Mills. The wiring is done point to point on rows of silver tinned ceramic tag strips that run in rows between the tube sockets, which are all old stock Amphenol's. The grounding is all accomplished on a single star type system with the grounds with the greatest potential at the center and the others extending outward in descending order for quitest operation. The Chassis consists of three layers, the first is 1/8 inch aluminum formed on a brake on which all of the mounting is done. I was even so crazy as to drill and tap every hole for the ceramic tube sockets which I then mounted with tiny stainless steel bolts. I used no ferrous metals. The underside is thickly coated with a liquid applied, commercial damping product. The exposed area of this is covered with baked-on, black, Harley Davidson, crinkle coat. The tube area and front is then overlayed with an anodized aluminum cover and the meter, controls, and driver tube area are then overlayed with a thin gold plate metal. Bias balancing is done by ganging all ten on each side to a pot. The LED meter on the front will display the individual bias of each tube and the cummulative bias of each side via individual 11 position switches for each side. The broad range of adjustability allows for the discretionary use of many different pentode and tentrode tubes. My sonic tube of choice is the EL-34. If I could afford 40 NOS Gold Lion KT66's I might change my mind but at $300 apiece I do not expect to ever have the chance to make that evaluation. The amps are strapped in triode mode for its greater purity of sound and it superior ability to swing current. Plate voltage is currently set at a sane 440volts at which the amps are putting out 240 triode watts which are effectively equivelant to far more pentode watts. The original plan was to put black granite side pieces on the amps but the weight was so extreme by the end that I decided to forgo the granite in lieu of Cherry, which matches my furniture anyway. As I recall the output transformers weigh 37lbs and the power weigh 29lbs. alone. Each amp weighs well over 100lbs. The bandwith measurements truly amazed us considering the size of the transformers. The damn things are almost flat down to DC and aren't down 3db until out around 70K. Just amazing.

The end result was amplfiers that have the bass control of the biggest solid state amps but the air, detail and purity that only well designed and crafted tube amps reproduce. The dynamics that they are capable of is simply shocking. They start and stop on a dime.

All right guys-that's enough rambling by a proud father. I've kind of stayed under the radar for years but I guess that I just "outed" myself. Thank you all for your interest.
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nooshinjohn

SILVER-7t

Posts: 1721

Joined: Fri Jan 30, 2009 8:54 pm

Post Fri Apr 09, 2010 6:47 pm

Re: Dan Devin's System

Thanks for the in-depth description. Somebody has to do this so it may as well be me. I humbly offer you my services as a professional and unbiased reviewer. Please ship these wonderous looking amps to my home for a go in my rig. So as to be completely thorough, it may take at least a year to complete and fully document my results. The will be very well cared for however and never allowed to be used to play RAP Music of any kind. \:D/ \:D/ :-k


As I said when we spoke last night, you need to bring these up to CarverFest for a head to head shootout with the very best amps ever made. Only then a Jedi will you be. :lol: 8)
Carver Statement Reference Monoblocks!!!The Gear... Carver "Statement" Monoblocks, Polk Audio "Signature" Reference Series 1.2TL with complete mods, Polk audio AB700/800 "in-wall" surrounds, Dodd Audio MLP, Pioneer Elite SC-65, Peachtree I-DAC, Oppo BDP-93, Yamaha PX-3 Turntable, with Sumiko BPS EVOIII, Pioneer PDD 9MkII SACD Player, SimAudio moon 110lp phono preamplifier.[/size]
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DANDEVIN

Newbie

Posts: 6

Joined: Fri Apr 09, 2010 2:03 am

Post Fri Apr 09, 2010 7:27 pm

Re: Dan Devin's System

nooshinjohn wrote:Thanks for the in-depth description. Somebody has to do this so it may as well be me. I humbly offer you my services as a professional and unbiased reviewer. Please ship these wonderous looking amps to my home for a go in my rig. So as to be completely thorough, it may take at least a year to complete and fully document my results. The will be very well cared for however and never allowed to be used to play RAP Music of any kind. \:D/ \:D/ :-k


As I said when we spoke last night, you need to bring these up to CarverFest for a head to head shootout with the very best amps ever made. Only then a Jedi will you be. :lol: 8)




John,

I see that you must have studied the Harry Pearson art of equipment review. I'll bet that he still has review loaners in his closet from the '70's.
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Jag_97470

SILVER-7 TUBE AMP

Posts: 3383

Joined: Fri Sep 19, 2008 12:06 am

Location: Oregon

Post Fri Apr 09, 2010 8:43 pm

Re: Dan Devin's System

DANDEVIN wrote:All right guys-that's enough rambling by a proud father. I've kind of stayed under the radar for years but I guess that I just "outed" myself. Thank you all for your interest.


And we are very grateful you outed yourself! Thank you for the detailed write up, I enjoyed reading that very much. You really should consider bringing your amp's to Carverfest. I have a feeling Bob Carver and yourself would hit it off, and this could be very entertaining for the rest of the attendees. Thanks again! =D>
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