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Old 18th December 2004, 07:01 AM   #391
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I have sanded back the power tranny of my (yet to be) PP 6L6 amp..

I've got to place masking tape around the top and bottom edge and cover + seal the terminals on the faceplate ontop.

Thought you guy's might like a look before it's painted, I know I did =)

Gardners Model # RS 3134
Specs are: 350-300-0-300-350 200mA = 70w

With: 10-0-200-220-240 Mains Primary taps, the extra 10 is for 250v operation (afaik)

1x 6.3v 3A, 1x 6.3v 1A and 0-5-6.3 2A for both 6.3 and 5v rectifier operation or whatever...

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Old 18th December 2004, 07:11 AM   #392
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When you paint it, try not to get overspray on your keyboard! If I were to paint over my key lettering I'd be in trouble.

That might look ok just clear coated with spray lacquer. Depends on the look you are after of course.
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Old 18th December 2004, 07:24 AM   #393
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Quote:
Originally posted by rcavictim
When you paint it, try not to get overspray on your keyboard! If I were to paint over my key lettering I'd be in trouble.

That might look ok just clear coated with spray lacquer. Depends on the look you are after of course.

OH NO! I'm not that much of a pack rat I have got plenty of space in the doorway of the shed...

spray lacquer?, hey you know it just might, a few days rubbing back with some wet&dry to smoothen it up as much as possible then lacquer it clear, Thanks!
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Old 18th December 2004, 03:48 PM   #394
Coulomb is offline Coulomb  England
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You should try to sand the metal in one direction only creating striaght lines as you go. I notice the finish so far looks like your wobbling all over the place. try using a 220 to 400 grit sanding belt from a belt sander and polish it like you would a good pair of shoes. You will need to hold the tranny steady while you do this. The surface should end up looking somthing like this.

Regards

Anthony
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Old 18th December 2004, 05:01 PM   #395
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A foam buffing mop on a drill and some very fine polishing compound could probably get it reflective!
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Old 18th December 2004, 11:53 PM   #396
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Quote:
Originally posted by Coulomb
You should try to sand the metal in one direction only creating striaght lines as you go. I notice the finish so far looks like your wobbling all over the place. try using a 220 to 400 grit sanding belt from a belt sander and polish it like you would a good pair of shoes. You will need to hold the tranny steady while you do this. The surface should end up looking somthing like this.

Regards

Anthony
I'm going to try some wet&dry today and see how that comes out, if that doesn't work I'll buy some fine grit belts and try that

Quote:
Originally posted by eeka chu
A foam buffing mop on a drill and some very fine polishing compound could probably get it reflective!
If I were to do that I will have to take the top and bottom caps off, so far I can't seem to get them off, if I left them on and buffed them they would tear the mop apart because of the edges...

Anyway! I'd rather do it by hand for now as I'm worried of getting fine grain metal and paint inside the windings...

Thanks everyone =)
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Old 20th December 2004, 10:44 AM   #397
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Default C3G headphone amp

This is my first ever tube project, actually my first ever electronic project ....

A headphone amp based on a design I found on the german site "Jogi's Roehrenbude", which definitely might sound unpronouncable for some...

It uses a tube made for the german post in the 60's (?) and that was used in audio repeater amplifiers for long distance.

The only changes to the original schematic are using a tube rectifier and way more chokes....It worked instantly not frying any parts and I only had some minor grounding issues.

Sound is promising and relaxed, although still a little "boomy", like some emphasis on the middle bass registers. Anyone got suggestions how to improve that?

rgds,
Oliver
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Old 20th December 2004, 10:46 AM   #398
Stixx is offline Stixx  Germany
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Default schematic

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Old 20th December 2004, 02:05 PM   #399
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Nicely made chassis, what wood is that?
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Old 20th December 2004, 02:08 PM   #400
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Hi,

Quote:
Nicely made chassis, what wood is that?
Looks like walnut.

Cheers,
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