Silver-7 restoration / update

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Toy Maker
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Silver-7 restoration / update

Post by Toy Maker » Mon Dec 03, 2012 1:41 pm

We are beginning to completely restore and upgrade a pair of Silver-7 tube amplifiers.
Something we haven't seen anyone else attempt before.

We'll be refinishing the chassis in high gloss black powder coating. The original lacquer finish was nice, but not durable what so ever. This new finish will last the life of the amplifiers. We will also be updating the RCA and binding connectors, and adding an IEC. also adding amber LEDs to the meters to match the Silver-1 preamp design.

http://www.facebook.com/groups/94906064 ... tif_t=like
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IMG_7967.JPG

elgrau
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Re: Silver-7 restoration / update

Post by elgrau » Mon Dec 03, 2012 1:55 pm

Cool project, TM...Good Luck!
FR: 400 disk changer with PS Audio Digital Link III DAC; Technics SL-1100A TT. QED Quenx1 IC's from DAC & TT to Adcom GTP-602 preamp/Tuner. AudioQuest King Cobra IC's from preamp to M1.0t mk-II opt2. QED Silver Spirals 4M wires to EPI 1000’s.
LR: AudioEngine wireless link from family room preamp to Barcus-Berry 2002R Sonic Maximizer to GlowPower Zyxt IC's to Sunfire 300x2 to Nordost 6M bi-source wires to AOS 28" MDF spherical speakers using six 6.5" woofers and eight 1" dome tweeters symm. arranged around the surface.
SS system: CX-995V DVD to AV-634x 3-4 channel amp (center/rears) & M1.0t mk-II opt2(fronts).
Garage: 300 disk changer to Entech 202.5 DAC to MXR150 Receiver (pre) to TFM-42 to EPI 400 speakers.

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jjptkd
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Re: Silver-7 restoration / update

Post by jjptkd » Mon Dec 03, 2012 2:26 pm

Right on!! =D> =D> These aren't the "New" ones that were just on eBay are they? :-k :-k
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Toy Maker
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Re: Silver-7 restoration / update

Post by Toy Maker » Mon Dec 03, 2012 3:06 pm

No. This is a set my father put in storage a couple years ago, after getting the original Silver-7 prototypes from Bobs personal collection.

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thuffman03
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Re: Silver-7 restoration / update

Post by thuffman03 » Mon Dec 03, 2012 4:50 pm

Very cool project. I will be looking forward to reading about the updates and pic's.
Some cool Carver stuff!

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BrianT
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Re: Silver-7 restoration / update

Post by BrianT » Mon Dec 03, 2012 6:13 pm

James.
Thats real funny that you have started this restoration on the Silver Sevens.

I have just finished upgrading all the caps in one amp and DC restorer circuit , have not had time to do the other.
When I am finished the other amp, I was planing on adding an IEC.

Brian
Attachments
Before Cap Upgrade.jpg
After Cap Upgrade.JPG
VPI Classic Turntable (black)
Transfiguration Phoenix Cartridge
Devialet 440PRO Mono Blocks
Audioprana SP/DIF-AES/EBU cable
Aurender N100H Music Server
Audioquest Diamond USB cable
B&W 803D3 Speakers (black)
Auditorium 23 Speaker Cables
Raysonic CD-168 CDP (silver)
Carver TX11

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Toy Maker
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Re: Silver-7 restoration / update

Post by Toy Maker » Mon Dec 03, 2012 6:30 pm

VERY nice. How much do you have into the upgraded parts so far?

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Magnaryder
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Re: Silver-7 restoration / update

Post by Magnaryder » Mon Dec 03, 2012 6:39 pm

Damn, Duelund and Jensen Caps!!! Holy Shit. You've got to tell us about the difference in sound. Did you change any of the resistors?

ray
Magnaryder

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


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BrianT
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Re: Silver-7 restoration / update

Post by BrianT » Mon Dec 03, 2012 7:30 pm

Toy Maker wrote:VERY nice. How much do you have into the upgraded parts so far?
James.

I am real busy tonight, will give you a break down on cost tomorrow.

Brian
VPI Classic Turntable (black)
Transfiguration Phoenix Cartridge
Devialet 440PRO Mono Blocks
Audioprana SP/DIF-AES/EBU cable
Aurender N100H Music Server
Audioquest Diamond USB cable
B&W 803D3 Speakers (black)
Auditorium 23 Speaker Cables
Raysonic CD-168 CDP (silver)
Carver TX11

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BrianT
Pair of Silver Sevens
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Re: Silver-7 restoration / update

Post by BrianT » Tue Dec 04, 2012 6:07 pm

Toy Maker wrote:VERY nice. How much do you have into the upgraded parts so far?
James.

Here is a list of the cap's Etc, we are looking at about $800.00 per amp chassis plus taxes.

2 x Duelund 76340 PIO 0.47uf $199.99ea
4 x ALEX-75267 0.01uf $ 40.61ea
2 x ALEX-75179 1.0uf $ 93.71ea
1 x OBLIG-74473 0.22uf $ 28.00ea
1 x CLARITY-74839 0.25uf $ 10.01ea
3 x JENSEN-73343 47uf $ 15.41ea
2 x Diodes
6ft Silver Wire
1 x 3K Resistor
1 x 68K Resistor
Wire insulation

Hows your restoration going?

Brian
VPI Classic Turntable (black)
Transfiguration Phoenix Cartridge
Devialet 440PRO Mono Blocks
Audioprana SP/DIF-AES/EBU cable
Aurender N100H Music Server
Audioquest Diamond USB cable
B&W 803D3 Speakers (black)
Auditorium 23 Speaker Cables
Raysonic CD-168 CDP (silver)
Carver TX11

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F1nut
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Re: Silver-7 restoration / update

Post by F1nut » Wed Dec 05, 2012 2:40 am

The original lacquer finish was nice, but not durable what so ever.
You're not suppose to toss them around like ya'll do.
Political Correctness...defined

A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.



In a recent press conference, President Obama remarked, "If I had a city, it would look just like Detroit."

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F1nut
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Re: Silver-7 restoration / update

Post by F1nut » Wed Dec 05, 2012 2:43 am

Brian, nice work. I am curious tho, why all the different brands of caps?
Political Correctness...defined

A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.



In a recent press conference, President Obama remarked, "If I had a city, it would look just like Detroit."

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BrianT
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Re: Silver-7 restoration / update

Post by BrianT » Wed Dec 05, 2012 6:51 am

F1nut wrote:Brian, nice work. I am curious tho, why all the different brands of caps?
Jessie.

Me not knowing the sonic difference, in in brands of caps I sent Chris Johnson @ partsconection (formally Sonic Frontiers)
the wiring schematic to have a look at.
The caps I used are what he chose, I did not question the the different brands, The ALEX are made by Duelund

Brian
VPI Classic Turntable (black)
Transfiguration Phoenix Cartridge
Devialet 440PRO Mono Blocks
Audioprana SP/DIF-AES/EBU cable
Aurender N100H Music Server
Audioquest Diamond USB cable
B&W 803D3 Speakers (black)
Auditorium 23 Speaker Cables
Raysonic CD-168 CDP (silver)
Carver TX11

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Snoop65
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Re: Silver-7 restoration / update

Post by Snoop65 » Wed Dec 05, 2012 2:44 pm

Excellent work Brian! You're a better man than me!!!! =D> =D> =D>
CARVER LIGHTSTAR REFERENCE+SUNFIRE CLASSIC TUBE PREAMPLIFIER+JBL XPL200+MUSIC HALL MMF-9.1+GRADO REFERENCE MASTER 1+Cayin CDT-17a =WOW!!!!!!

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F1nut
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Re: Silver-7 restoration / update

Post by F1nut » Wed Dec 05, 2012 6:07 pm

BrianT wrote: Jesse.

Me not knowing the sonic difference, in in brands of caps I sent Chris Johnson @ partsconection (formally Sonic Frontiers)
the wiring schematic to have a look at.
The caps I used are what he chose, I did not question the the different brands, The ALEX are made by Duelund

Brian
Got it, thanks.

What I see are some bypass caps that were originally used to help out the crappy stock electrolytic and mylar caps. Since you are upgrading those, there really is no need to use bypass caps now. I've found that bypassing high quality film/foil caps results in unwanted artifacts. Also, not using bypass caps now will save you money.

One I don't really get is the OBLIG-74473 0.22uf (gold one), CLARITY-74839 0.25uf (silver one)and the ALEX-75267 0.01uf (black one, is that an ALEX) all together. Three different caps, three different flavors when all that is needed is one high quality 0.48uF cap.
Political Correctness...defined

A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.



In a recent press conference, President Obama remarked, "If I had a city, it would look just like Detroit."

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