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Old 26th June 2009, 02:47 PM   #11
The one and only
 
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I don't recall the rail voltages of the CAS 2. If they don't exceed
50 volts, I'm sure you would be fine.

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Old 27th June 2009, 06:35 AM   #12
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Mr. Pass,

Thanks so much!

And I thank you for the fine work as well--my SL 10 and CAS 2 bring my favorite music to life better than any other audio gear I have heard (I have heard quite a lot too) and I will keep them alive as long as it is possible.

Best regards.

Steven
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Old 29th June 2009, 12:08 PM   #13
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Location: Tyrone Ga. U.S.A.
Niconoise asked about the 10 year old new old stock caps he
has and if they were safe to use. No one pointed out that old
unused caps can go bad on the shelf and may need to be reformed. When in doubt I charge old caps through a 1k 5W
resistor just to get a rough idea if the cap's still good.
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Old 29th June 2009, 02:52 PM   #14
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Caps seem to last a remarkably longer time than the manufacturers
state. A lot of old Threshold and Pass Labs amps are still going
strong even though the caps are operated at a lot of current and
heat, so I have no hesitation using older used and new caps on DIY
projects.

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Old 15th July 2010, 08:05 AM   #15
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Quote:
Originally Posted by shriekback View Post
Hi all,

I am hoping that someone might give me some guidance in replacing the PS caps in a Threshold CAS 2 poweramp.

The original caps are 6900uf 60v Mallory that are no longer available. Would 15000uf 50v Spargaue caps work okaY? They are the same size (2" D by 2.625" Tall--with raised screw terminals).

If those would not work, any suggestions?

Thanks!
Hi,

Yesterday I replaced the Original Mallory (30 years old) 6900uf in my Still going strong CAS 2 for Mundorf 10000 High Current Power cap. I believe it's worth giving a Threshold CAS 2 a second life. It's still one of Nelson's best poweramp ever made.

kind regards,
Marcella van Kraaij
The Netherlands
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Old 15th July 2010, 08:00 PM   #16
The one and only
 
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I always felt it was under appreciated, probably because the
marketplace was emphasizing "dynamics" at that time.

Fashion has changed a bit since then: witness the success of
lower power amplifiers such as tubes or FW, which have other
charms.

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Old 18th July 2010, 03:03 PM   #17
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I absolutaly agree with that. Thats why I choose this poweramp in the '70, working together with an Audio Reseacht SP 6C pre-amp. Times has changed but I still enjoying listening to my Cas II in combination with a tube pre-amp. I also owned a newer Threshold S5000 poweramp, but honestly it is not an NP design .
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Old 6th October 2012, 07:42 PM   #18
Jolida is offline Jolida  India
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Quote:
Originally Posted by Nelson Pass View Post
I always felt it was under appreciated, probably because the
marketplace was emphasizing "dynamics" at that time.

Fashion has changed a bit since then: witness the success of
lower power amplifiers such as tubes or FW, which have other
charms.

I just bought a Threshold model 4000 power amp from the second hand market today. The amp has "jarring" on both channels at medium
Volume levels. I love the sound of the amp though. Is this got to do with a capacitor dying or something ? Which section needs attention. Please help
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Old 6th October 2012, 08:35 PM   #19
Zen Mod is offline Zen Mod  Serbia
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Location: ancient Batsch , behind Iron Curtain
what's "jarring" ?
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Old 7th October 2012, 06:47 AM   #20
Jolida is offline Jolida  India
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I mean "Distortion" in both channels..
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