This is my 3rd attempt at building one of Mr. Gillespie's little Single Ended EL84 amp. This build is using completely new parts, but deviating from Dave's original build by using Edcor Iron instead of the original Magnavox 8604 PT and the two AES output transformers all done on the Maggie chassis. Reason: I had the stuff! Simple as that. Some time back I'd purchased a Hammond 12 X 8 X 2 aluminum HD chassis, along with the Edcor transformers. Last week after completing my #2 DG-SE1 on yet another 'donor' SE-EL84 amp chassis, I decided it was time to take this to the next level and do an 'all new build'. Inspired by DerekVa, who's thread is also viewable and still in process, I've watched while he fabricated a VERY nice version of this amp! While Derek's build skills clearly exceed mine, I've been extremely impressed with the results of the first two of these I built from 'donor' units. Hopefully this one will live up to the same level of performance.
Attached are some pics of the 'get started' aspect of this. Shortly I'll be off to the Hdwr Store to buy screws, washers, and nuts. Seems there's NEVER enough of those around when you need them, in spite of coffee cans full of the stuff!! Anyway....after some deliberation I decided to go with the chassis mounts you see in the pics. This more or less 'isolates' the PS section off to one side, puts the choke far away from the OTs and OPTs, places the driver tube somewhat 'alone' and phases the PT opposite that of the OTs. What it also does is cause me to have to devise an internal 'shielded' input scheme in order to deliver the signal from the rear RCA jacks to the front where the driver tube is. Having just built a unit on a donor chassis where this was done without any real issues, I decided the only way to see if it would work was to try it. So, I'm also going to buy a long coiled spring which I will mount along the inner edge and use as a conduit to run the input leads to the 12AX7.
Have done some drilling as pics will show....but taking a break now, heading to the store and off for a few more errands....and will resume 'build' later tonight. I home to complete the mounting of all components and perhaps even get the PS section done tonight. We'll see...... Thanks for looking, and comments welcome and appreciated. WC
Attached are some pics of the 'get started' aspect of this. Shortly I'll be off to the Hdwr Store to buy screws, washers, and nuts. Seems there's NEVER enough of those around when you need them, in spite of coffee cans full of the stuff!! Anyway....after some deliberation I decided to go with the chassis mounts you see in the pics. This more or less 'isolates' the PS section off to one side, puts the choke far away from the OTs and OPTs, places the driver tube somewhat 'alone' and phases the PT opposite that of the OTs. What it also does is cause me to have to devise an internal 'shielded' input scheme in order to deliver the signal from the rear RCA jacks to the front where the driver tube is. Having just built a unit on a donor chassis where this was done without any real issues, I decided the only way to see if it would work was to try it. So, I'm also going to buy a long coiled spring which I will mount along the inner edge and use as a conduit to run the input leads to the 12AX7.
Have done some drilling as pics will show....but taking a break now, heading to the store and off for a few more errands....and will resume 'build' later tonight. I home to complete the mounting of all components and perhaps even get the PS section done tonight. We'll see...... Thanks for looking, and comments welcome and appreciated. WC
Attachments
Last edited:
If you can find them your amp would be all set for off road. :thmbsp:
