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Old 3rd May 2003, 04:44 PM   #1
Morse is offline Morse  United States
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Smile No bang, no flash, just music!

Hi guys;

Just a quick preliminary announcement - my 6BM8 lives! :-)

So far so good after about 45 minutes of listening - no bangs or flashs, no background hum, and the sound's amazingly good through the garbage speakers I use for initially testing all my amps. Later I'll dig out my EPI 100's and wring it out a little better.

And all this for under $75. You can't beat DIY!!

Pics to follow ASAP.

All the best,
Morse
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Old 3rd May 2003, 05:38 PM   #2
dhaen is offline dhaen  Europe
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Default Bargain basement...

Hi Morse,

Well done
I'm sure a lot of DIY'ers will be interested in the details. That's a hell of a low price!

Cheers,
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Old 3rd May 2003, 06:16 PM   #3
Morse is offline Morse  United States
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Default Oops, didn't mean to overstate it....

Hi John;

Hmmm, maybe my post was a little deceptive on costs to new DIY'ers.

A lot of the small parts were recycles (scrap aluminium stock, wood leftover from furniture projects, parts stripped off old computer PS's, knobs and switches out of my junk box, etc), but the main costs were:

1. PS $26 for a Hammond 269JX
2. $20 for OPT's
3. $14 for capacitors
4. $6 for sockets (overpaid, darn it!)
5. $8 for gold plated RCA's (okay, I should've used recycles but I couldn't resist)

Maybe I should've counted the $12 for a pair of cheapie 6BM8's, though I personally regard valves as fungibles rather than a permanent part of the amp.

If someone had to source all the parts new, it's going to break $100, but not by a whole lot - I just totalled it up and my estimate's maybe $125USD for all new (counting a new set of valves and a $13 plank of first grade cherry).

Still can't beat DIY!

All the best,
Morse
PS to any new DIY'ers reading this, save those parts off everything you throw out - including computers!! You'll never know when you need an RCA jack, an IEC socket, or a knob off some junker you were going to just toss out. Heck, I even strip out bundles of wire from old computers and use it on my projects - usually I can get 5 metres or more of useable wire from an old 386 or 486, in nice 25cm lengths.....
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Old 3rd May 2003, 07:50 PM   #4
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Morse,
Just curious, where do you get two OPT'S for $20.

Lee
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Old 3rd May 2003, 09:02 PM   #5
Morse is offline Morse  United States
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Hi Lee;

>>>...Just curious, where do you get two OPT'S for $20...<<<

There are actually a number of OPT's to choose from in that price range. The first option would be a line matching trafo - this was discussed in a previous thread. The other option is an old 'table radio' OPT. Triode Electronics has a couple that are in this price range (these are the ones I used), and you can check the other parts houses too - Angela Instruments, Antique Electronics Supply, etc. FWIW, I'll probably order up a couple more for the parts bin soon just to have 'em on hand. I never know when the "DIY bug" will hit me!!

Mind you, none of these hyper low cost options can compete with one of the better Hammonds - my 2A3 (with a pair of 5 kilo 1627SE's!) really does sound rather better than this little 6BM8 - as well it should!! Still, it's amazing how good this little guy sounds.....

All the best,
Morse
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Old 3rd May 2003, 10:59 PM   #6
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Quote:
Originally posted by Morse
There are actually a number of OPT's to choose from in that price range.
A couple of my 6BM8 SE projects should come in at less than half as much as yours -- i scored 2 Roberts R-Rs with 6BM8 amps in them for $40 CAD with all but rectifiers & an odd resistor coming from salvaged parts -- i don't know how the iron on the Roberts compares, perhaps the picture might give some indication (the other unit actually has a little nicer looking parts). My CalRad has even nicer iron and will run closer to your $75 when done.

I'd be interested in the circuit you used.

dave
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Old 4th May 2003, 02:03 AM   #7
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Default POOOFFF...

Hi,

Congrats Morse, can't wait to see the schematic too...

Dave,

You seem to be running a small museum...
In Europe it's become virtually impossible to get hold of little gems like that....well, not at garage sale prices anyway.

Cheers,
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Old 4th May 2003, 02:31 AM   #8
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Default Re: POOOFFF...

Quote:
Originally posted by fdegrove
You seem to be running a small museum...
In Europe it's become virtually impossible to get hold of little gems like that....well, not at garage sale prices anyway.
Not much is in museum quality The stuff keeps turning up. The SE ELL80 amp in the bottom right of the pic with the yellow hard-hat showed up this week (and the one in the top-middle of the same frame is a PP ELL80).

dave
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Old 4th May 2003, 02:32 AM   #9
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Oops forgot the picture:
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Old 4th May 2003, 02:47 AM   #10
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Default ELL80?

Hi,

As far as the ELL80 goes, I hope it's in good condition for it's merely vanished of the face of the earth.

Just from memory, I think it was a pair of EL90s or 95s? under one hood...really unobtainium territory for the past twenty years already...

Oh, and than there was the ECLL800 containg 1/2 of a 12AX7A as well...

Cheers,
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