CHAMP ELECTRONICS -" THE VINTAGE VALVE AMP HOSPITAL"

NOTTINGHAM, ENGLAND

 

SERVICING A SELMER DIPLOMAT REVERB 15 watt COMBO AMPLIFIER


selm6a.jpg

The Diplomat Reverb is a fairly rare Selmer amp.


selm6b.jpg

Apart from the Fane driver, the rest was all original.


selm6c.jpg 


 


selm6d.jpg
 

All the early Accutronics reverb units had this lever. The idea being that before transporting the amp, one would put this lever into the “lock position” which would lock the sprung-mounted pan down to the main housing with a strip of felt between them for cushioning. I would imagine this was to prolong the life of the unit, especially as the two minute coils, one at each end of the pan, are connected to the RCA (Phono) sockets on very thin fly-leads. The wires snapping through constant movement is quite a common failure of these units. However, they haven’t fitted this locking-lever for many years…..even though it is still shown on all the models’ coding!

 



selm6e.jpg

All original but with some components needing attention.


 

selm6f.jpg

Same again on the pre-amp.


 


selm6g.jpg 


 


selm6h.jpg

 A "typical" split & duff ERO cap.





selm6i.jpg

After all duff component changes on the pre-amp.

 

selm6j.jpg

Close-up of some of the changed components. The really annoying thing about Selmers (and some other old amps too) is the fact that they would wrap components around the tags & valve base pins before soldering. This makes them a pig to remove without damaging & (or) scorching other components/wires. If one knows how to solder correctly, there is no need to wrap wires or even put them through the tag/pins’ holes. A good soldered joint cannot be pulled apart!!


selm6k.jpg

The little filter clusters are a pig to do too!

selm6l.jpg

The replaced output tubes’ cathode resistor and by-pass cap……Thank God for small modern components!


selm6m.jpg




selm6n.jpg


This Diplomat was owned by a fantastic guy Chris, from the Sollihull area here in the UK. This is Chris’ testimonial e-mail after getting his amp back from me:

"Hi John,
Hope you are well? Just to let you know the Selmer Diplomat amp sounds absolutely great, so I will probably end up selling the Feton-Weill Cadet. I have upgraded the Diplomat with a 20 watt handling early Goodmans Audiom 61 which sounds even better than the fitted Fane!
Once again many thanks for resuscitating a great vintage amp. Look forward to seeing you soon.
 
Best Regards, Chris"



 


Return to SELMER-TRUVOICE SERVICING PAGE

Return to CHAMP ELECTRONICS - SELMER WORK UNDERTAKEN PAGE