700 Series 1 Build

[Hexis22]

All testing completed and passed with flying colors.

Finial listening sessions confirm it sounds excellent, just as expected for a full custom hand assembled WOPL build - highly detailed, silent background, punches way above it's price point.

Unfortunately both meters have residue on the internal surface of the lenses visible when backlit. I was not able to get the meters apart easily to clean, given they are not easily replaced if damaged. I was not willing to take the risk with 40 year old brittle material...

 

[laatsch55]

Excellent Eric, Scott will be a happy camper!!

 

[Gepetto]

Excellent Eric, Scott will be a happy camper!!

Scott will definitely have a one of a kind...

Eric, great work! Glad you pulled this all together.

 

[George S.]

Cool, a very unique piece.

 

[Hexis22]

Scott will definitely have a one of a kind...

Eric, great work! Glad you pulled this all together.

Thanks, Joe.

It was an interesting challenge of a project.

Probably spent more time trying to figure out the over temp light and faceplate wiring than anything else, given I didn’t have the original amp to start with.

Scott sent just enough pictures of the original amp to figure everything out and complete wiring.

Hearing the resulting sound in the end makes all the effort worthwhile and this hobby even more enjoyable.

 

[Gibsonian]

Great work Eric, no better place I coulda sent it, no better place to share it than here, and no better engineering work that allows this project to move forward.

 

[gene french]

what a great hobby!!!

 

[Vintage 700b]

All testing completed and passed with flying colors.

Finial listening sessions confirm it sounds excellent, just as expected for a full custom hand assembled WOPL build - highly detailed, silent background, punches way above it's price point.

Unfortunately both meters have residue on the internal surface of the lenses visible when backlit. I was not able to get the meters apart easily to clean, given they are not easily replaced if damaged. I was not willing to take the risk with 40 year old brittle material...

I have been gone, away from computers, phones etc. Just got home a little while ago, so I did not see the final amplifier buttoned up. I opened the pictures Eric, and said "WoW" out loud, that project turned out absolutely stunning....and I know how sweet it sounds. Artwork, that is artwork.
What's next now? Maybe a Dual 500? ..........That would be a challenge.
Beautiful work, once again, on this 700 !

 

[George S.]

Yup, looks like a hot rod. But it's Pro Street, with all the very best parts available inside!

 

[Hexis22]

After looking at the amp over multiple listening test sessions, I just could not get past the debris on the interior of the meter lenses.

After discussion with Scott, I decided to risk opening the meters to allow cleaning.

Successfully cleaned and reassembled both meters.

Before:

After:

 

[Vintage 700b]

After looking at the amp over multiple listening test sessions, I just could not get past the debris on the interior of the meter lenses.

After discussion with Scott, I decided to risk opening the meters to allow cleaning.

Successfully cleaned and reassembled both meters.

Before:

After:

Looks super nice Eric.
A true classic, it's all in the details.

 

[laatsch55]

I do have some spare ser I meters..

 

[Hexis22]

I do have some spare ser I meters..

I should have known…

You must have quite a stockpile of PL components.

Can’t be too many spare S1 meters floating around.

 

[George S.]

Very nice.

 

[Vynuladikt]

This thread has been great! I have a couple 700 series 1 and have wanted to try this but was hesitant. It ended up being a great project.
Thanks for sharing your work.

 

[Skratch]

I should have known…

You must have quite a stockpile of PL components.

Can’t be too many spare S1 meters floating around.

I have a working pair laying around

 

[laatsch55]

I should have known…

You must have quite a stockpile of PL components.

Can’t be too many spare S1 meters floating around.

Not a lot Eric, just seem to have what you need..

 

[Gibsonian]

Update on the Series 1 First Ever Complete WOPL:

Arrived without issue, first try is in the mancave replacing a 400 full WOPL running mid and tweets - 400 Hz and upward. Actually driving a Faital Pro midrange and a Satori beryllium tweets.

Only an hour or so listening last night but sure sounded good to me, just need more time to be sure but seemed an improvement. Eventually plan to try on the bottom of this system (400 Hz and lower), replacing a Crown amp that pushes 1500 watts/ch, and also going full range in the living room system driving HPM 200's. Hope to do some extensive listening this weekend.

 

[Vintage 700b]

Update on the Series 1 First Ever Complete WOPL:

Arrived without issue, first try is in the mancave replacing a 400 full WOPL running mid and tweets - 400 Hz and upward. Actually driving a Faital Pro midrange and a Satori beryllium tweets.

Only an hour or so listening last night but sure sounded good to me, just need more time to be sure but seemed an improvement. Eventually plan to try on the bottom of this system (400 Hz and lower), replacing a Crown amp that pushes 1500 watts/ch, and also going full range in the living room system driving HPM 200's. Hope to do some extensive listening this weekend.

View attachment 77679
View attachment 77680

You've got a beautiful amp there, a true PL classic.
Watch the prices increase now on these early 700's.
Eric paved the way, and showed everyone how it can be done!

 

[Gibsonian]

Holy shitironi, this amp is quite something. Call it stunning. Quiet, detailed, smooth and more weight. Can hear it in the bass and I'm crossing at 400. Thanks again for this jewel Eric.