vintageHIWATTconvention.com

Look what I've found on another forum:

"They are more Hiwatt than anything circuitwise. Of course you don't get the mil spec tag board construction. I have schematics and theyre so close it makes you wonder....."

Ever heard of it?

They have so much similarities with Hiwatt:

http://www.andy-duke.co.uk/roost/guts.html


What do you think?

HIWATTDR405 wrote:400w valve bass head for sale no tolexed head case just chassis in perfect working order each valve has it's own bias pot for better control same for the 100w head little use military style wiring pics can be post upon request

It would be nice if you could post pictures

shakti wrote:Would be cool if it could be done...but if it's done on a separate tap on your PT it might not be possible with mine.

Maybe you could use a voltage divider to lower voltage?

Dr.HIWATT wrote:Yeah, Mark opted for an optocoupler help make for a more quiet switching mechanism.

Ahh, very interesting, bravo

Is there an optocoupler? I haven't seen it on any schematic

Dr. Hiwatt just take it slow and don't rush

I recently had a similar situation with a 1968 DR103. make sure the power board matches the manual and or layout. Don't get hung up on each turret exactly matching the layout. I have seen many old HIWATTs that had components moved one turret to the right or left. What is important is the circuit. U...

Are you sure it's lug 8? Lug 8 should be 0 volts (connected to chassis), and lugs 3 and 4 should be high voltage...