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Re: Build/Sell Me an SE Amp?

Joe -

Sorry I haven't replied to your personal email - busy week. But, here are some suggestions.

First, see if you can experience the SE world locally. If you're in the NorthEast, let me know.

Second, don't get hung up on a chassis. Breadboarding is the way to go. Get a scrap of plywood, a large batch of clip leads and a pair of octal relay sockets. The relay sockets are inexpensive, and have screw terminals for each pin. If Vinnie is hanging around I'm sure he can suggest some sources for clip leads - I think he's cornered the market.

The Hammond 125ESE's are great for breadboarding (and actually work very nicely in many finished amps). Inexpensive, and you can always resell them later if you upgrade.

Next look for (or build) a small bench power supply. The heathkit IP-32 is one of my favorites. Something with 0-400vdc and 6.3v for filament is perfect. The IP-32 is nice in that it also has a negative 0 - -100v bias output. They often need to be re-capped, but are easy to work on. They were kits to start and have roomy chassis'.

With the Hammonds, octal sockets, bench supply and a few misc. parts you can start to breadboard up many designs. My DC coupled 6EM7 is very easy to get working. You should be up and running in under an hour on a breadboard. Then listen, try various designs and decide what you really want to commit to a chassis.

The above picture is a breadboard of my current 211 amp. A bit scarey to see 800+ volts floating around a table, but it worked rather nicely.

The chassis work isn't that hard either. A stepped bit works well for many hole sizes. You can also use a commercial service such as front-panel express.

Enjoy!



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