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mike
Guest
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 Posted:
Thu Nov 25, 2004 10:14 pm Post subject:
Tube Damper???? |
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Happy Thanks Giving to All
Do tube dampers really work???
Thanks
Mike M
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JamesG
Guest
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| Posted:
Fri Nov 26, 2004 2:14 am Post subject:
Re: Tube Damper???? |
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No. It is audiophool nonsense.
"mike" <cabinetmake@earthlink.net> wrote in message
news:8Fspd.3998$NU3.2994@newsread1.news.pas.earthlink.net...
| Quote: | Happy Thanks Giving to All
Do tube dampers really work???
Thanks
Mike M |
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Adam Stouffer
Guest
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| Posted:
Fri Nov 26, 2004 6:12 am Post subject:
Re: Tube Damper???? |
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JamesG wrote:
| Quote: | No. It is audiophool nonsense.
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Unless the tube happens to be very microphonic then it could help. I
remember seeing some metal "top hat" tube dampeners in the back of an
old GA issue. Looked like anyone with a lathe could crank them out in
minutes. Price, $225.
Adam |
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Brian McAllister
Guest
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| Posted:
Fri Nov 26, 2004 6:12 am Post subject:
Re: Tube Damper???? |
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On Thu, 25 Nov 2004 22:03:48 GMT, mike <cabinetmake@earthlink.net>
wrote:
| Quote: | Happy Thanks Giving to All
Do tube dampers really work???
Thanks
Mike M
|
Yes, tube TVs would be lost without them.
Brian McAllister
Sarasota, Florida
email bkm at oldtech dot net and@hope.thespambots.die |
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mike
Guest
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| Posted:
Fri Nov 26, 2004 6:20 pm Post subject:
Re: Tube Damper???? |
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Thank you to all for the info.
I know Audio Research uses them on all their products.
just curious
Thanks again
Mike M |
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Jon Yaeger
Guest
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| Posted:
Fri Nov 26, 2004 6:20 pm Post subject:
Re: Tube Damper???? |
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in article giIpd.940$u81.86@newsread3.news.pas.earthlink.net, mike at
cabinetmake@earthlink.net wrote on 11/26/04 10:51 AM:
| Quote: | Thank you to all for the info.
I know Audio Research uses them on all their products.
just curious
Thanks again
Mike M
|
I've never seen them on older Audio Research gear . . .
I have a pair of great tube dampeners from a Wollensak tape recorder. The
system consists of a rubber "can" that slides over the entire tube and
sockets that are suspended with rubber shock absorbers.
It makes great sense in that application to shield the head amp tube (hi mu
6EU7s) from the mechanical vibration that inevitably occurs from the
transport.
I would imagine that they are a hell of a lot more effective than the O
rings that are sold at outrageous prices to audiophiles . . . |
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Mike Gilmour
Guest
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| Posted:
Fri Nov 26, 2004 6:20 pm Post subject:
Re: Tube Damper???? |
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"mike" <cabinetmake@earthlink.net> wrote in message
news:giIpd.940$u81.86@newsread3.news.pas.earthlink.net...
| Quote: | Thank you to all for the info.
I know Audio Research uses them on all their products.
just curious
Thanks again
Mike M
|
Try it for yourself. Wind 20 turns of teflon tape directly around a tube
and listen. Bill Beard used to do that I believe on signal valves.
Personally I'd prefer to select less microphonic signal valves. The metal
vaned coolers however do IMO extend power valve life considerably and if you
ground the coolers on signal valves it acts a bit like shielding. You don't
see screening cans around much nowadays. The very slight hum on my amps
went when I grounded the signal valve coolers.
I'm waiting for the flak ......... ;-)
Mike G |
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Patrick Turner
Guest
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| Posted:
Fri Nov 26, 2004 6:20 pm Post subject:
Re: Tube Damper???? |
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Mike Gilmour wrote:
| Quote: | "mike" <cabinetmake@earthlink.net> wrote in message
news:giIpd.940$u81.86@newsread3.news.pas.earthlink.net...
Thank you to all for the info.
I know Audio Research uses them on all their products.
just curious
Thanks again
Mike M
Try it for yourself. Wind 20 turns of teflon tape directly around a tube
and listen. Bill Beard used to do that I believe on signal valves.
Personally I'd prefer to select less microphonic signal valves. The metal
vaned coolers however do IMO extend power valve life considerably and if you
ground the coolers on signal valves it acts a bit like shielding. You don't
see screening cans around much nowadays. The very slight hum on my amps
went when I grounded the signal valve coolers.
I'm waiting for the flak ......... ;-)
|
I don't see a need for tube dampers.
Pick non microphonic tubes, and all will be well.
Besides, some micro tubes would be still micro
with dampers, since the elements sway around if the mica discs are loose.
They used to place tubes in aircraft in tight fitting metal surrounds in an
effort to keep
them cool, with an air flow past the metal.
The planes flew so fast the air flow was hot, so they had to use refrigeration
to keep them cool.
That made the planes heavy, since gridges are that way,
and so some bright spark said let's use solid state.
The fridges are still parked in an old hangar in Arizona; I suggest
all cool dudes drop by and get a few of these US airforce units to keep the
tubes cool.
The only place I use those spring loaded metal jackets is on phono amps,
and they help reduce hum, although I don't have much, since I use a j-fet
in cascode with a 6EJ7 for the first stage of a phono amp.
Patrick Turner.
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Stewart Pinkerton
Guest
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| Posted:
Fri Nov 26, 2004 7:53 pm Post subject:
Re: Tube Damper???? |
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On Sat, 27 Nov 2004 04:48:43 +1100, Patrick Turner
<info@turneraudio.com.au> wrote:
| Quote: |
Mike Gilmour wrote:
"mike" <cabinetmake@earthlink.net> wrote in message
news:giIpd.940$u81.86@newsread3.news.pas.earthlink.net...
Thank you to all for the info.
I know Audio Research uses them on all their products.
just curious
Thanks again
Mike M
Try it for yourself. Wind 20 turns of teflon tape directly around a tube
and listen. Bill Beard used to do that I believe on signal valves.
Personally I'd prefer to select less microphonic signal valves. The metal
vaned coolers however do IMO extend power valve life considerably and if you
ground the coolers on signal valves it acts a bit like shielding. You don't
see screening cans around much nowadays. The very slight hum on my amps
went when I grounded the signal valve coolers.
I'm waiting for the flak ......... ;-)
I don't see a need for tube dampers.
Pick non microphonic tubes, and all will be well.
Besides, some micro tubes would be still micro
with dampers, since the elements sway around if the mica discs are loose.
They used to place tubes in aircraft in tight fitting metal surrounds in an
effort to keep
them cool, with an air flow past the metal.
The planes flew so fast the air flow was hot, so they had to use refrigeration
to keep them cool.
That made the planes heavy, since gridges are that way,
and so some bright spark said let's use solid state.
|
Case closed.....................
--
Stewart Pinkerton | Music is Art - Audio is Engineering |
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Mike Gilmour
Guest
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| Posted:
Sat Nov 27, 2004 12:16 am Post subject:
Re: Tube Damper???? |
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"Stewart Pinkerton" <patent3@dircon.co.uk> wrote in message
news:ed2fq0tj0p097aom5oajj66knj9p594mbe@4ax.com...
| Quote: | On Sat, 27 Nov 2004 04:48:43 +1100, Patrick Turner
info@turneraudio.com.au> wrote:
Mike Gilmour wrote:
"mike" <cabinetmake@earthlink.net> wrote in message
news:giIpd.940$u81.86@newsread3.news.pas.earthlink.net...
Thank you to all for the info.
I know Audio Research uses them on all their products.
just curious
Thanks again
Mike M
Try it for yourself. Wind 20 turns of teflon tape directly around a
tube
and listen. Bill Beard used to do that I believe on signal valves.
Personally I'd prefer to select less microphonic signal valves. The
metal
vaned coolers however do IMO extend power valve life considerably and if
you
ground the coolers on signal valves it acts a bit like shielding. You
don't
see screening cans around much nowadays. The very slight hum on my
amps
went when I grounded the signal valve coolers.
I'm waiting for the flak ......... ;-)
I don't see a need for tube dampers.
Pick non microphonic tubes, and all will be well.
Besides, some micro tubes would be still micro
with dampers, since the elements sway around if the mica discs are loose.
They used to place tubes in aircraft in tight fitting metal surrounds in
an
effort to keep
them cool, with an air flow past the metal.
The planes flew so fast the air flow was hot, so they had to use
refrigeration
to keep them cool.
That made the planes heavy, since gridges are that way,
and so some bright spark said let's use solid state.
Case closed.....................
--
Stewart Pinkerton | Music is Art - Audio is Engineering
|
If aircraft had kept tubes maybe their sound systems wouldn't suck ;-) |
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Robert Casey
Guest
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| Posted:
Sat Nov 27, 2004 12:16 am Post subject:
Re: Tube Damper???? |
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Brian McAllister wrote:
| Quote: | On Thu, 25 Nov 2004 22:03:48 GMT, mike <cabinetmake@earthlink.net
wrote:
Happy Thanks Giving to All
Do tube dampers really work???
Thanks
Mike M
Yes, tube TVs would be lost without them.
They make for good rectifiers as well. And have |
good heater-cathode voltage ratings. |
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Robert Casey
Guest
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| Posted:
Sat Nov 27, 2004 12:16 am Post subject:
Re: Tube Damper???? |
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The metal
| Quote: | vaned coolers however do IMO extend power valve life considerably and if you
ground the coolers on signal valves it acts a bit like shielding. You don't
see screening cans around much nowadays. The very slight hum on my amps
went when I grounded the signal valve coolers.
I'm waiting for the flak ......... ;-)
|
No flak here. It makes sense that what you have is a heat
sink and electrostatic shield. Mil spec tube shields were
black (like a heat sink) and had finger stock that touched the
envelope. That should damp the tube as well as conduct heat
away. |
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Stewart Pinkerton
Guest
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| Posted:
Sat Nov 27, 2004 1:26 pm Post subject:
Re: Tube Damper???? |
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On Fri, 26 Nov 2004 20:19:05 -0000, "Mike Gilmour"
<mike@tfjazz.freeserve.co.uk> wrote:
| Quote: | "Stewart Pinkerton" <patent3@dircon.co.uk> wrote in message
news:ed2fq0tj0p097aom5oajj66knj9p594mbe@4ax.com...
On Sat, 27 Nov 2004 04:48:43 +1100, Patrick Turner
info@turneraudio.com.au> wrote:
They used to place tubes in aircraft in tight fitting metal surrounds in an
effort to keep them cool, with an air flow past the metal.
The planes flew so fast the air flow was hot, so they had to use
refrigeration to keep them cool.
That made the planes heavy, since gridges are that way,
and so some bright spark said let's use solid state.
Case closed.....................
If aircraft had kept tubes maybe their sound systems wouldn't suck ;-)
|
The sound system in a MiG 25 is pretty bad, and it's all tubed! :-)
--
Stewart Pinkerton | Music is Art - Audio is Engineering |
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Stewart Pinkerton
Guest
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| Posted:
Sat Nov 27, 2004 5:55 pm Post subject:
Re: Tube Damper???? |
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On Sat, 27 Nov 2004 13:53:55 -0000, "Mike Gilmour"
<mike@tfjazz.freeserve.co.uk> wrote:
| Quote: |
"Stewart Pinkerton" <patent3@dircon.co.uk> wrote in message
news:06tgq0pfsbsfcksk36qa47205ddhb3t2l9@4ax.com...
On Fri, 26 Nov 2004 20:19:05 -0000, "Mike Gilmour"
mike@tfjazz.freeserve.co.uk> wrote:
"Stewart Pinkerton" <patent3@dircon.co.uk> wrote in message
news:ed2fq0tj0p097aom5oajj66knj9p594mbe@4ax.com...
On Sat, 27 Nov 2004 04:48:43 +1100, Patrick Turner
info@turneraudio.com.au> wrote:
They used to place tubes in aircraft in tight fitting metal surrounds in
an
effort to keep them cool, with an air flow past the metal.
The planes flew so fast the air flow was hot, so they had to use
refrigeration to keep them cool.
That made the planes heavy, since gridges are that way,
and so some bright spark said let's use solid state.
Case closed.....................
If aircraft had kept tubes maybe their sound systems wouldn't suck ;-)
The sound system in a MiG 25 is pretty bad, and it's all tubed! :-)
Yea but remember the MiG 25 tubes temperature control is by vodka fumes :-)
plus you get to enjoy the sheer dynamics of EMP! In the mean time all ss
equipment in the area is a smokin' wreck.......Cool...
|
Actually, they got that wrong, too. Modern rad-hardened SS gear is
also proof against EMP. It just needs an engineer to be told the
threat, and he can come up with a defence.
--
Stewart Pinkerton | Music is Art - Audio is Engineering |
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Mike Gilmour
Guest
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| Posted:
Sat Nov 27, 2004 6:08 pm Post subject:
Re: Tube Damper???? |
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"Stewart Pinkerton" <patent3@dircon.co.uk> wrote in message
news:06tgq0pfsbsfcksk36qa47205ddhb3t2l9@4ax.com...
| Quote: | On Fri, 26 Nov 2004 20:19:05 -0000, "Mike Gilmour"
mike@tfjazz.freeserve.co.uk> wrote:
"Stewart Pinkerton" <patent3@dircon.co.uk> wrote in message
news:ed2fq0tj0p097aom5oajj66knj9p594mbe@4ax.com...
On Sat, 27 Nov 2004 04:48:43 +1100, Patrick Turner
info@turneraudio.com.au> wrote:
They used to place tubes in aircraft in tight fitting metal surrounds in
an
effort to keep them cool, with an air flow past the metal.
The planes flew so fast the air flow was hot, so they had to use
refrigeration to keep them cool.
That made the planes heavy, since gridges are that way,
and so some bright spark said let's use solid state.
Case closed.....................
If aircraft had kept tubes maybe their sound systems wouldn't suck ;-)
The sound system in a MiG 25 is pretty bad, and it's all tubed! :-)
--
Stewart Pinkerton | Music is Art - Audio is Engineering
|
Yea but remember the MiG 25 tubes temperature control is by vodka fumes :-)
plus you get to enjoy the sheer dynamics of EMP! In the mean time all ss
equipment in the area is a smokin' wreck.......Cool... |
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