Danelectro Hodad amplifier - schematic?

[Mark Hammer]

I have one of these adorable little battery-powered amps.  I was curious about possibly modding it.  Anybody able to direct me to a schematic, or at least a decent gutshot?  It includes "reverb" (PT2399 delay) and a minimally tweakable tremolo (modest adjustable speed range), both of which might benefit from some addition controls.

[Mark Hammer]

Hah!  Got the thing open, and confirmed that it uses a PT2399, as anticipated and in fairly textbook manner.  There is a 6k8 resistor to ground from pin 6, to set the delay time.  Took it out and temporarily installed 47k, yielding nice echoes, so I think I'll install a 50k pot in series with 4k7 to replace the 6k8. That's the easy part.  Identifying the node where feedback amount is situated is a whole other matter, but in the meantime, variable delay time is a nice perk.

The presence of three same-value caps in the tremolo circuit suggests that it will likely be the same sort of LFO structure found in the EA tremolo.  I'll have to poke around and see if I can find a way to vary the tremolo depth.

[Nasse]

Looks like mini Watkins Dominator, seems Dano too has two speakers.

[Mark Hammer]

Yup, a pair of 3-inch 8-ohm beasts, run in parallel.  If I could figure out the circuit, it would be a snap to add a second 386 to power the second speaker.  Making it "stereo" would be a slightly taller order.

[pinkjimiphoton]

i gave mine to wagner. he said it wasn't loud enough

dunno but suspect the honeytone may be similar?

if ya haven't seen it

http://www.angelfire.com/music/harmonica/honeytone.html#circuit

[Mark Hammer]

The non-effect portion may be similar, if not identical, though it's thru-hole, and the Hodad is mostly surface-mount.