Tools, Tones and Toys for Guitarists
While I’m in the process of modding / rebuilding some Vox amps, I thought I might try the original Vox AC-4 from 1962, or at least a simplified version of it. Here’s a link to the full vintage Vox AC-4 schematic and amp details. Apart from the simplicity, I want to try something with an EF86 … Read more
This is the original Vox AC-4, not much like the current line-up at all, apart from the low wattage. Volume Tone, on/off Speed Foot switch for trem (vibrato) – no depth control 8″ 3ohm speaker made by Elac ~3.5 watts RMS EF86 preamp pentode EL84 power pentode EZ80 rectifier ECC81 for trem VINTAGE VOX AC-4 … Read more
Before I completely rip this Vox AC4 apart and rebuild the amp on tagboard, I thought I’d try swapping the output transformer (OT), just to see if it made any difference to the sound of the amp, as I’ve read conflicting views online. Cutting a very long post short – yes it did make a difference, … Read more
Yes, this is super nerdy and I may be the only person that will ever find it useful – I combined the specs from the Hammond 125SE series into one table, as I found it really annoying to check through individual datasheets. I recently installed one in a Vox AC4-C1 12 just to see if … Read more
Chris “SPIN Doctor” Stelloh did it again! Amazing work with this box of fairy dust and chaos. The layout is verified and good to go! …and here is a layout with “Stelloh mods“.
Stumbled across this one I though would be a quick Fuzz Friday layout. It’s a modified Zonk 2 with silicon transistors. Originals use NOS 2N3416, but other low hFe (150-200) BJTs should work just fine (2N2222, 2N5550, etc). Laid it out so the board would be vertical in the enclosure with the pots attaching to … Read more
