PDA

View Full Version : Old valve amp , bin it ??


andyrlb
23-05-2020, 09:45
Morning all,
I what I think its just an old P.A valve amp, I wonder if the parts may be of any value?
The transformers are substantial.

I’ve just discovered what it is [emoji16]
It’s a Grampian 562A PA amplifier .

http://www.chambonino.com/work/work10.html

https://uploads.tapatalk-cdn.com/20200523/b7bfe56a2edce25efab6cb8b660efb86.jpg
https://uploads.tapatalk-cdn.com/20200523/dc2d39c1de812ed06f25d886a50ed49a.jpg
https://uploads.tapatalk-cdn.com/20200523/50c5e2129ba85e2916d81672c2baee70.jpg
https://uploads.tapatalk-cdn.com/20200523/f8b10dd3393232eb16a9cc081535976c.jpg
https://uploads.tapatalk-cdn.com/20200523/d969a572576e0f15a50ddc4351cbeb59.jpg


Sent from my iPhone using Tapatalk
Macca
23-05-2020, 10:01
No. Don't bin it. I had a mono power amp, very similar vintage and look, Alan Firebottle transformed it into a fantastic-sounding stereo amplifier. He's your man for that sort of thing.
andyrlb
23-05-2020, 10:09
No. Don't bin it. I had a mono power amp, very similar vintage and look, Alan Firebottle transformed it into a fantastic-sounding stereo amplifier. He's your man for that sort of thing.

Oh that’s interesting, top man thanks Martin


Sent from my iPhone using Tapatalk
Firebottle
23-05-2020, 11:52
Good link.

Yes it would be a travesty to bin it.
To convert it to a stereo amplifier would need a couple of quality SE output transformers, suitable for EL34. Output power would be 8-10W.

The rest of any conversion is small signal stuff and wouldn't cost a lot.
Firebottle
23-05-2020, 12:03
suitable output transformers https://www.ebay.co.uk/itm/Hi-Fi-Amp-Output-transformer-10W-Single-Ended-for-EL34-valve-OEP-R120A15F/163960666280?hash=item262cd138a8:g:--8AAOSwCH9d3ROD
andyrlb
23-05-2020, 12:15
Good link.

Yes it would be a travesty to bin it.
To convert it to a stereo amplifier would need a couple of quality SE output transformers, suitable for EL34. Output power would be 8-10W.

The rest of any conversion is small signal stuff and wouldn't cost a lot.

Thanks for the info mate, tbh it’s not something that interests me so I’ll hopefully move it on .


Sent from my iPhone using Tapatalk
Barry
30-05-2020, 21:10
I would bin it - the controls only go up to "10"! :D
andyrlb
31-05-2020, 07:13
Well it sold on the devilbay and the buyer wants to know if they can collect and pay for it in 5-6 weeks !


Sent from my iPhone using Tapatalk
walpurgis
31-05-2020, 07:24
Well it sold on the devilbay and the buyer wants to know if they can collect and pay for it in 5-6 weeks !

Check his buyer feedback, you'll see if he's a messer or legit. Unless he has none of course! :)