Anyone know how to build one of these?

[ampgeek]

Hmmmm.....maybe ~1/2 the work is already done for those of us on a homegrown quest for one of these.

Looks like Weber also sells a high powered switching board kit for pretty short coin (like....~$10!). Although I couldn't find a schematic or switch contact ratings/speeds, the descriptions imply that the HP version is intended for speaker switching applications.

https://taweber.powweb.com/store/chansword.htm

Anyone here have any experience with these switching board kits/assemblies? Clearly, some thought must be given to coil voltage supply issues. But..for a versitile stand alone unit it might make sense to power it with a wall wart or a separate 6V coil to avoid grounding issues when deriving that from a filament heater circuit. Looks like the pre-assembled unit does it with a wall wart.

Cheers,
Dave O.

[danotron]

cool....nice find...i think I'll order one....thanks!

[Runaway J]

Randal Aiken designed a similar switching system as a DIY project, but the schematic isn't online anymore. Seems to be exactly what Weber produces now. Don't know if it's allowed to post it here, shoot me an e-mail if you're interested.

[Bob-I]

Well isn't there already the Headbone for this purpose?

http://www.tonebone.com/tb-headbone-vt.htm

I use one of these live with a 50 watt Dumble clone and a modded Bassman. I've never had a glitch, but beware, double/triple check your wiring every time you hook it up. Once in a dark club I hooked up speaker 1 to head 2. I'm just thankful that I noticed immediatly there was no hiss when I powered up my amps or I could've blown 2 OTs.

Oh, and I've never had any switching noise or squeeling. Dumble isn't exactly hi-gain compared to a Rectifier or SLO.