• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

the big one

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So I'm toying around with the idea of building "the big one".
At this stage it is just an idea/concept so I'm open to opinions or suggestions.

I want to make a "V-8" stereo amplifier like some I have seen with a chassis that resembles a V-8 engine. The tubes would definitely have to have top caps so I could have "plug wires". I'm thinking since 6bg6 tubes are just a 6l6 with a top cap and are pretty cheap I could use a 6l6 schematic for PPP.

I already have a power transformer that will deliver more current than I would ever need at voltage used and I can get 100W OPT's from Edcor for about $110 ea.

I found this schematic. Looks easily doable.

Thoughts? Quad_6L6_PPP.gif
 
Hi, a friend and I were thinking along similar lines and I was even thinking of repurposing an aluminium engine block for the chassis. Another friend of ours is contemplating a turntable using a flywheel !

The schematic looks interesting i can't really comment on any issues as not an expert in this field however I am very keen to follow progress and learn or help if I can.
 
The schematic is almost right. Run the Screen Grids from the lower HT point, after the 3k9 resistor. 420V is a bit too high for a 6L6 on the Screen. If you use 807s, they are a 6L6GC with a top cap for the anode and different 5 pin base. They do produce the 807 with an IO base and the top cap. Same valve apart from that.
 
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