Tools, Tones and Toys for Guitarists
The original schematic for the 385 was killing me – just too many part numbers listed, so I cleaned it up a bit. I also removed the projector circuits. I think there are two versions of this amp – this is the 6V6 version, while the other uses EL84s (which is nearly impossible to find … Read more
Just documenting my latest Bell & Howell conversion. – Model 601 amplifier, with 1950 capacitor dates.
{ “@context”: “https://schema.org”, “@type”: “TechArticle”, “headline”: “Fender Deluxe 5E3 Schematic & Layout”, “description”: “Reference notes for the Fender Deluxe 5E3 amplifier including schematic, layout, and component data.”, “keywords”: “Fender Deluxe 5E3, tweed deluxe, guitar amp schematic, 6V6, 12AY7, 5Y3”, “author”: { “@type”: “Person”, “name”: “Andrew” }, “publisher”: { “@type”: “Organization”, “name”: “Vero P2P” } } … Read more
This four-channel beast is a hybrid valve PA amp, built by a bloke named Jim Farrington in NSW sometime in the late sixties or maybe seventies. From what I can tell, they mostly stayed local to where he lived, and you don’t see many pop up anywhere. I picked this up on eBay, and it … Read more
Documenting another Bell & Howell amplifier conversion. While it has a different model number and a shiny red faceplate, it’s the same amp as the 621 and others in the series. Quite often, variations of the model number has more to do with the projector than the amp. BELL & HOWELL 622 PROJECTOR AMPLIFIER Stock … Read more
Despite saying never again – I now have another Bell & Howell projector amp. This is a 621 model from 1951, which as far as the amp is concerned, looks almost identical to my 601 from 1949. I believe the main differences were with the actual projector itself – the 621 being a later and improved model. … Read more
The little-known EL34 Vox amps from the late fifties, one of which is fixed bias. https://www.voxac30.org.uk/vox_ac2_30_1957.html. VOX AC2, 30 WATT AMPLIFIER. OS/003 (FIXED BIAS) VOX AC30, NO2. OS/007 1960 (CATHODE BIASED) EL34: individual 470 ohm cathode resistor and 50uf bypass caps. 5k output transformer
From what I can see, the only difference between the two schematics below is the 200ohm resistor after the rectifier (shown on the V-1-3 schem). There are some variations of cap values that can be ignored, such as 4n7 vs 5n etc. I think this may be similar to the AC15 schematics, where Thomas Orgain … Read more
Unknown amp from the Netherlands…. I really have no idea about this one, and I’ve had no luck searching online. I can only assume that it’s from the Netherlands based on the control labels being Dutch. I was drawn to it mostly for the look, and the fact that it had 2 x EL84s … Read more
Another simple one knob tone control, this time from the Marshall 18w amplifier, or the model 1974x, whatever you prefer… Marshall used two different tone controls in the amp. A lot of folks build the 18w lite, which is just the normal channel of the amp, and they often use the trem channel tone … Read more