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Old 27th June 2008, 12:37 AM   #11
jkeny is offline jkeny  Ireland
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Thanks Ian,
These are fabuluous sites for very cheap & nice tube chassis. Your baby huey is the tube amp I'm keeping along with a John Swenson BDT preamp.

Now if I could only find some sites like these in UK/Europe - anybody got any?
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Old 27th June 2008, 12:47 AM   #12
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Default Re: Pics of unique design of amp chassis?

Quote:
Originally posted by Doug Kim

Has anyone seen very unique chassis or amp layout?
I wonder if anybody built a chassis using LEGO.

He asks for pics, no pics so far. I have one.
No tubes inside but it is made from wood mainly (MDF and HDF) with some paint to pretty it up.

Yes, it is an amp, not a computer. Details here.
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Old 27th June 2008, 12:54 AM   #13
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Another. This one has a couple of tubes. Not quite finished yet. This one is all metal

The K10A 10 watt class A.
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Old 27th June 2008, 05:57 AM   #14
es44 is offline es44  Denmark
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I've always been in love with this design: Moebius but never got around to make one..... yet
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Old 27th June 2008, 10:04 AM   #15
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I think Poinz is a carpenter - I've seen a photo of him doing some carpentry. I don't think that's his day job - I think he works in the university. Whatever, he's a jolly nice chap!
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Old 27th June 2008, 11:53 AM   #16
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Those are really interesting designs. Thanks!

I sometimes wish there is a vendor selling universal plates that can be used for different configurations.

For example, 5"x5" aluminum plates with different holes. 1 larger hole for SE output tube, or 2 larger holes for PP output, 2 small holes for gain and phase splitting tubes, square hole for power tranny, etc.
Combine 6 of them gives 15" x 10" amp. Also there might have to be a wooden or metallic base with rails that accomodates several 5"x5" plates.

I once thought about making those plates and bases, but I gave up because the only place that does metallic work (frontpanel express) charges significan amount, so it was not economical.

Doug
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Old 27th June 2008, 03:03 PM   #17
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But it IS economical to do exactly as you say - have modular plates that can be used for set combinations. You don't have to go to a specific vendor - your local metal seller will usually cut sheets to size. I make all my plates from 4mm aluminium because it doesn't bend. So the modules are (275mm front to back):

100mm x 275: PSU - mains transformer plus rectifier, choke and caps.
100mm x 275: OPTs
70mm x 275: Output stage tubes x 4, or two outputs and two drivers.
50 x 275: Input stage tubes.
50 x 275: Interstages, etc.

So for a standard width rack size you have a total of 420mm wide to fill

a) Monoblok Push Pull
100mm x 275: PSU - mains transformer plus rectifier, choke and caps.
100mm x 275: OPT + interstage/extra smoothing/filament supplies etc
70mm x 275: Output stage tubes x 4
50 x 275: Driver stage tubes x 4
50 x 275: Interstages, etc.
50 x 275: Input stage tubes x 4

a) Stereo SE3
100mm x 275: PSU - mains transformer plus rectifier, choke and caps.
50 x 275: filaments etc
50 x 275: filaments etc or interstages
100mm x 275: OPTs
70mm x 275: Output stage tubes x 2, drivers x2
50 x 275: Input stage tubes x 2 + interstages

Andy
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Old 27th June 2008, 06:07 PM   #18
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Andy,

Your sounds really convenient and neat. Thanks for sharing.

I'll look up some local metal shops and will make those modular plates.

I know designing a nice look to audio is one big thing for DIYers, but for those like me without proper tools, I just want to concentrate on circuits.

Doug
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Old 28th June 2008, 01:57 PM   #19
jkeny is offline jkeny  Ireland
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What about the Velleman K4040? I think it looks rather fetching. Is the chassis available seperate to the kit?
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Old 28th June 2008, 03:55 PM   #20
zobsky is offline zobsky  India
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Quote:
Originally posted by andyjevans
But it IS economical to do exactly as you say - have modular plates that can be used for set combinations. You don't have to go to a specific vendor - your local metal seller will usually cut sheets to size. I make all my plates from 4mm aluminium because it doesn't bend. So the modules are (275mm front to back):

Andy

Here's an example of a interstage coupled push pull 2A3 built modularly. The power transformer is connected via an umbilical and all the filtering , input and power stages are on 6" x 12" 1/8" Al plates. Someday, I'll actually get the thing to make sounds.

Click the image to open in full size.
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