What to build next ???

[67plexi]

This amp building is to much fun, So far #124-100 watt, #102-100 watt.

#183-100 watt and #183-50 watt. looks like a HRM-100 watt next ?

I have most of the parts on hand for the HRM. Not the 500r so far.

I'm on the witch hunt for the SSS parts looks like I'm six months out on that build. Any one know how to get a traid SP-117 inductor


Thank you, Steve.

[ToneMerc]

Any one know how to get a traid SP-117 inductor

It's been out of production for 21 years; it might take two weeks or two years to find one......oh the perils of era correct parts.

TM

[glasman]

I give you a hint, as I recall they are 300mH.

Try cinemag in California, they will build you one. Ain't cheap.


Gary

[glasman]

Any one know how to get a traid SP-117 inductor

It's been out of production for 21 years; it might take two weeks or two years to find one......oh the perils of era correct parts.

TM

They are probably still sitting somewhere on a shelf at Apex electronics in LA, if you can find the right box

Hey Gil, ROAD trip...

[glasman]

Third option is a WAH inductor. Normally about 500mh. This is what TR did in the sterling.

Also small bear electronics sells DIY inductor kits, so you can always roll you own.

Gary

[talbany]

The SP-117 is a .9h

Tony

[glasman]

The SP-117 is a .9h

Tony

Then that is even easier to find a sub....

[talbany]

Then that is even easier to find a sub

Gary if you find one or know of a source please post it..I was going to roll my own..

Thanks!!..

Tony

[ElectronAvalanche]

ok guys,

now spill the beans!! If you know the inductance of the inductor you must know the schematic!

I think that would be much appreciated by the community!

Cheers,

Electron

[glasman]

Then that is even easier to find a sub

Gary if you find one or know of a source please post it..I was going to roll my own..

Thanks!!..

Tony

Check the WAH inductors, there are a couple that are in that range.

The 500mH that I bought at CE actually measured 690mH.

Remember inductors and resistors follow the same rules. Two inductor in series gives 2x the inductance as long as there is no mutual coupling between the two colis.

Don't have a direct source and would have to hunt around for a source, but 900mH is not that uncommon a value. Of course inductors in that range have not been used in new designs for years. There are too many better approaches these days. State variable filters, simulated inductors, SAW filters etc etc.

Gary

[talbany]

Then that is even easier to find a sub

Gary if you find one or know of a source please post it..I was going to roll my own..

Thanks!!..

Tony

Check the WAH inductors, there are a couple that are in that range.

The 500mH that I bought at CE actually measured 690mH.

Remember inductors and resistors follow the same rules. Two inductor in series gives 2x the inductance as long as there is no mutual coupling between the two colis.

Don't have a direct source and would have to hunt around for a source, but 900mH is not that uncommon a value. Of course inductors in that range have not been used in new designs for years. There are too many better approaches these days. State variable filters, simulated inductors, SAW filters etc etc.

Gary

Will do!!.. Thanks for the shout back..
All the Best!!

Tony

[glasman]

Another source.,..

http://www.rhombus-ind.com/audiocat/audioind.html

[Chris333]

ok guys,

now spill the beans!! If you know the inductance of the inductor you must know the schematic!

I think that would be much appreciated by the community!

Cheers,

Electron

I don't know anything about the SSS, but I think the 300mH tap on the old Ampeg V series amps is the 1k or center of the rocker (the one that seems most useful for guitar). Not sure how the inductor is tapped for an SVT, but Ampeg still uses it for that amp, maybe you could get an Ampeg service center to order the part, or at least find out how much it costs, and how it's tapped...

[David Root]

Even when you do get the occasional gutshot, the only one I have seen is very difficult to decipher, and was only a partial chassis shot. (Other than the pics of SSS #001, which have been around for a while and are not the 150W 4x6550 version everyone wants).

I have never seen a schematic off of one of those, if I had I would have built one long ago.

Nevertheless I will try it after I finish my 183-style 100W w/HRM and six position FSW.

After all I already bought the vintage repro yellow Fasel inductor for it, can't stop now!