Heather or SLO amp

[bnwitt]

Has anyone in here built a SLO or Heather style amp?  I'm just curious as I have a head cabinet I got off of eBay some time ago which has a 26-1/2" overall length and a 20" control panel opening that I want to do something special with.  I've also got a couple of sets of MM 50 Watt trannies to use and I was thinking a 50 watt version of the SLO would be a really good amp for my local market as well.  I think the Heather is a fairly close version of the SLO.  Is that right?  Comments from anyone who has built either one of these amps would be appreciated.
Barry

[tubeswell]

Has anyone in here built a ... Heather style amp?  ...  I think the Heather is a fairly close version of the SLO.  Is that right?  ...

As in https://www.tedweber.com/heather-c-kt ?

[bnwitt]

Yes.  That's the Weber version of the SLO I believe.

[tubeswell]

Here's the SLO100 schematic. Looks pretty similar (at a casual superficial glance).

[bnwitt]

Oh wow!  nice document.  Thank you very much Tubeswell.

[kagliostro]

Ciao Bnwitt

Here attached the layout for a 50W SLO on turret planned and used by a friend of mine to build 3 units

(PS details and Layout on the .pdf file)



Tone Stack components are on pots, instead to be on the board like on some layout you can find on the web




Franco

[bnwitt]

Franco,
Thank you very much sir.  I will study that layout and photo.
Barry

[kagliostro]

A bit of photo of the heads build by my friend (50W and 100W versions)













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Here another layout you can find on the web







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A brief analysis



Have a nice day

Franco

[bnwitt]

Thank you again Franco.  Very helpful indeed.