base for amp

karma · 18th June 2004, 12:42 AM

i have been looking around and i see people are using wood or
aluminum for there tube amps has anyone used plexiglass?

would it take the heat from the tubes? or would it melt

just wondering. trying to get parts together

thanks........

arnoldc · 18th June 2004, 12:53 AM

hi,

i have on the works a pre-amp using acrylic as chassis. the acrylic is 1/4" and i visualize would look nice, hopefully.

my amp project on acrylic is also on the way, this time i use 1/2" acrylic but there will be 2mm aluminum for grounding and heatsink.

obviously, i did not answer your question

peter daniel is the acrylic guru in this forum, but he's into solid state amps.

karma · 18th June 2004, 01:08 AM

hmm a pre amp would look good. what ill do is buy a small piece
and set it up with a tube see if it gets soft. my trio amp case started to fall apart and shorted the amp so im making a new one
just wondering if it will hold all this. or maybe i should go with aluminum not sure

see pic->

the last owner must have dropped the amp the case was in bad shape

EC8010 · 18th June 2004, 01:27 AM

It takes a lot of heat to soften acrylic - more than provided by valves. However, I'd be prepared to bet that in the long term it would make it go brittle. More to the point, I would be very uneasy about attempting to build a hum-free valve pre-amplifier in an unscreened case. Stick with aluminium until you really know what you're doing.

karma · 18th June 2004, 01:27 AM

but i did save all the guts. had to pop the rivets to get em out.
same amp new case

karma · 18th June 2004, 01:38 AM

ok ill try aluminum

karma · 18th June 2004, 02:59 AM

skip it. im going to send the plate in and have it spot welded.
then ill just paint it rebuild it replace the coupling caps tubes and sockets i like the look it had

it going to be a summer project

ill save making a plate for a 2a3 amp i wana make

karma · 18th June 2004, 03:03 AM

za plate of manny problems

18th June 2004, 12:42 AM	#1
karma diyAudio Member Join Date: Feb 2003 Location: hamilton,ontario	base for amp i have been looking around and i see people are using wood or aluminum for there tube amps has anyone used plexiglass? would it take the heat from the tubes? or would it melt just wondering. trying to get parts together thanks........

18th June 2004, 01:27 AM	#4
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	It takes a lot of heat to soften acrylic - more than provided by valves. However, I'd be prepared to bet that in the long term it would make it go brittle. More to the point, I would be very uneasy about attempting to build a hum-free valve pre-amplifier in an unscreened case. Stick with aluminium until you really know what you're doing. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

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18th June 2004, 12:53 AM	#2
arnoldc diyAudio Member Join Date: Apr 2003 Location: Makati	hi, i have on the works a pre-amp using acrylic as chassis. the acrylic is 1/4" and i visualize would look nice, hopefully. my amp project on acrylic is also on the way, this time i use 1/2" acrylic but there will be 2mm aluminum for grounding and heatsink. obviously, i did not answer your question peter daniel is the acrylic guru in this forum, but he's into solid state amps.

18th June 2004, 01:38 AM	#6
karma diyAudio Member Join Date: Feb 2003 Location: hamilton,ontario	ok ill try aluminum

18th June 2004, 02:59 AM	#7
karma diyAudio Member Join Date: Feb 2003 Location: hamilton,ontario	skip it. im going to send the plate in and have it spot welded. then ill just paint it rebuild it replace the coupling caps tubes and sockets i like the look it had it going to be a summer project ill save making a plate for a 2a3 amp i wana make

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