Hi Rob, I may be able to find you a used tested mains and output transformer.
Note that even if the output transformer is a bit on the small side, as long as it does not get too hot it will simply add a bit more distortion
Ed
Hi Ed
That will be great if you can. I have been toying with this for ages now and have the chassis, turret board, components, speakers, valves etc etc. I've even got the all necessary parts for a ply cabinet. I was thinking of an 18 watter but i know by a Marshall 5 watt combo I have, 18 watts will be far too loud for home use and as I dont play in a band anymore it will never be used properly at home.
Driving a pair of ECL86's, although not as good as EL84s, will be spot on for what I'm seeking.
Obviously happy to pay costs etc.
Many thanks
Rob
Hi Rob, I'll be having a sort out of transformers shortly, so PM me your requirements.
Ed
I have a suitable drop through mains tfmr for 10 beer tokens Rob, if it's any use. It came off a 5-10 I think.
For low power rich tone I'd recommend Class A SE amplifiers like the Fender Champ. Build this one first, you can always build another.
Schematic looks ok apart from the 25u cathode cap on the input. You could try a 47 or 100u for more a bit more bass. Oh, are you using solid state rectification BTW ?
Andy.
Hi Andy
That sound good although (naive here) you'll have to let me know what beer tokens are (I'm a cider drinker).
Yes, it will have solid state rectification and I agree on the cathode cap too. I have a mod for the tremelo circuit as I beleive that it never worked properly as it had a mistake in the original circuit design.
I understand what you mean re building Fender Champ style amps - I have a Matamp Little Rock (2 x ECC83, 1 x 6V6GTA - this is a little too clean but very, very loud), Marshall Class 5 (one of the first combos with the rattle - I think its about serial no 105!), Marshall DSL201 and my 67 Bronco (Vibro Champ - it was fun getting this up and running). I just thought that the 10 watt Marshall combo, is probably the smallest 'Blues Breaker' type amp to build and a little unusual too. I am in time going to have a crack at the original Fender Deluxe tweed 5E3 circuit.
I do these in between radio restorations.
Regards
Rob
I'll dig it out Rob and check to see what VA it is, though I think it's 100mA.
No stranger to little guitar amps then. So your after a bit of distortion, of coarse you can use a pedal but they can be less than subtle. Have you thought about designing your own guitar amp?
Andy.
Hi Andy
Many thanks and your help is much appreciated.
I would like to have a go at designing and building my own amps but I must admit my knowledge and skills fall far short of the mark to do this. I really wish I had the knowledge that you guys have.
Best Regards
Rob
What nominal capacitor voltages should I use for those not stated on the schematic?