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ST-70 Cage

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Posted on September 16, 2009 at 11:10:12
wjcorbin
Audiophile

Posts: 38
Location: Pennsylvania
Joined: July 22, 2001
 I wondered, does everyone here with ST70's operate them with the cage on? Until yesterday, I had always operated it without the cage. I did this for more ventilation, but yesterday I attached the cage and ran it for awhile and the cage got pretty hot. Any opinions on whether I should leave cage on or take it off.

wjcorbin

I'd rather run it without the cage but...., posted on September 16, 2009 at 16:57:53
olddude55
Audiophile

Posts: 25149
Location: Pittsburgh
Joined: July 12, 2003



this guy is just too curious. He loves to get into things and I'd hate to have him zap himself.
___
From the Industrial Hub of the Mid-Mon Valley!
RE: I'd rather run it without the cage but...., posted on September 17, 2009 at 13:50:48
wjcorbin
Audiophile

Posts: 38
Location: Pennsylvania
Joined: July 22, 2001
 Olddude55,
I just have to reply to your message. I too have a male black cat with the same white hairs on his tummy. The main reason I wanted to go with the cage on is exactly your reasoning, even though my cat has shown zero interest in the ST70, why temp fate or test how many lives he really has?

wjcorbinjr

RE: I'd rather run it without the cage but...., posted on September 18, 2009 at 02:18:53
olddude55
Audiophile

Posts: 25149
Location: Pittsburgh
Joined: July 12, 2003
 Jello the Wondercat will do anything for attention and has a knack for getting into places he should never visit.
There's no doubt in my mind that he'd crawl into the Dynaco if given the chance.
___
From the Industrial Hub of the Mid-Mon Valley!
RE: ST-70 Cage, posted on September 16, 2009 at 12:36:29
Joe Curcio
Manufacturer

Posts: 1094
Location: Northern CA
Joined: October 10, 2001
Contributor
  Since: July 1, 2002
 Heat is the number main cause of electronic equipment aging.

I'd recommend that if you have no kids or pets and your sure that no-one will come in contact with the pcb that you leave it off

RE: ST-70 Cage, posted on September 16, 2009 at 11:24:26
bluemonkey6
 I operate all my Dynaco equipment (3x PAS-3,1x ST70 & 1x ST35) without cages but then I have no children or other pets.

There is a good reason to run it WITH the cage..., posted on September 16, 2009 at 12:05:11
Bill Thomas
Industry Professional

Posts: 1330
Location: Southern USA
Joined: January 3, 2004
 The cage is there for TWO reasons: First, to keep curious fingers from getting SERIOUSLY shocked, but more importantly, the cage is designed to extinguish any flames *if* the unit happens to catch on fire. While it is very uncommon for one to burst into flames, it HAS happened. The perforated cage will extinguish the flames.

(This information came from one of the original guys at Dynaco so if you don't believe me, take it up with him.)

Bill

RE: There is a good reason to run it WITH the cage..., posted on September 16, 2009 at 20:12:39
sprucemoose
Audiophile

Posts: 30
Location: Williamsburg, VA
Joined: July 27, 2007
 now THAT i didnt think of. maybe i will reinstall mine...

but it looks so good off. :(

RE: There is a good reason to run it WITH the cage..., posted on September 17, 2009 at 05:04:56
hartthethird
 Running my pas-2 without cover greatly increases hum in phono mode.
I run the mkIII's without mostly because I don't have 'em Although, let's face it, one of the best things about tube audio stoff is seeing the tubes glow in the dark when listening at night.
Gene

RE: There is a good reason to run it WITH the cage..., posted on November 14, 2009 at 09:27:54
JHugh
Audiophile

Posts: 8
Location: Rocky Mountains
Joined: November 16, 2008
 You could drill extra holes in the sides for extra ventilation and/or add a quiet computer 120mm fan (see the SPCR web site for models).(though adding more air would probably negate the fire extinguishing feature)

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