Threshold Stasis 2.

steenoe · 2nd July 2005, 07:05 PM

I have a Threshold Stasis 2 comming in for repair! Could any of you post a schematic for that one? I did search, but the links didnt seem to work anymore:-( Now, I never claimed that I actually could repair this thing, only promissed that I would take a look! But man, I would love to bring this baby to sing again. I remember those Stasis amp's back then!! I had never heard anything like it

They really rocked the place

I really hope to make it sing again. As I understood, the trouble is, that one of the channels is louder than the other! Also he said that one of the VU meters in front was lighting up all the time. Now this guy is not whatever, kind of guy. We go back all the way to school!!
Hope some of you guys are prepared to help out? I will post the excact problems on monday, when I get my hands on the amplifier!!

Steen

acaudio · 2nd July 2005, 08:03 PM

http://www.passlabs.com/np/stasis2-3schem.tif

???
Adam

steenoe · 2nd July 2005, 08:11 PM

Thanks a lot Adam, but I have a persisting problem; File does not excist. Can you download the tif file?? I can not.

Steen.

GRollins · 2nd July 2005, 08:51 PM

It comes up for me.

Grey

acaudio · 2nd July 2005, 09:03 PM

Quote:

Originally posted by steenoe
Thanks a lot Adam, but I have a persisting problem; File does not excist. Can you download the tif file?? I can not.

Steen.

Yes, no problem, check your settings (virus scan or protection ???)

I have saved it as *.gif see here:

Adam

steenoe · 2nd July 2005, 09:09 PM

Thanks a lot, guys. I just uninstalled DAP, and then I could download the document

Well, from my first posting, any ideas how to get this running again?? This Monday I will try to do some measuring.

Steen.

steenoe · 5th July 2005, 08:11 AM

Does any of you have a service manual for this amp? A link to it would also be fine. The amp itself actually sound pretty good, only one channel is a bit louder than the other and from the Peak meter on the front, it seems like one channel is putting out some more signal than the other. Even without a signal, the leds lights up. (the first 4-5 leds). Any thoughts on that problem? I would really appreciate a little help on this.
This elderly amp, is very finely build

Steen

apassgear · 5th July 2005, 03:41 PM

I don't know anything about Stasis, not even seen one. But I would start checking bias and comparing it to the "good" Channel. Next I would check voltages at different nodes.

You have beside a seeminly good channel so it should not be that dificult

apassgear · 5th July 2005, 03:45 PM

Steen,

Could you post a pic of the inside?

Duo · 5th July 2005, 03:49 PM

This is highly interesting. I draw two conclusions.

1: Perhaps the channel with the constant VU indication is oscillating. I have had this happen while only causing a reduce in audible gain and causing the amplifier to run a little warm.

2: I doubt the possibility of this idea, but DC offset?? (You'd have probably noticed that by now.) All VU meters I've seen are AC coupled so far. So I doubt offset is doing it, it's not as if it'd reduce the gain any.

Hope that at least gave a bit of input to the subject.

2nd July 2005, 07:05 PM	#1
steenoe diyAudio Member Join Date: Mar 2004	Threshold Stasis 2. I have a Threshold Stasis 2 comming in for repair! Could any of you post a schematic for that one? I did search, but the links didnt seem to work anymore:-( Now, I never claimed that I actually could repair this thing, only promissed that I would take a look! But man, I would love to bring this baby to sing again. I remember those Stasis amp's back then!! I had never heard anything like it They really rocked the place I really hope to make it sing again. As I understood, the trouble is, that one of the channels is louder than the other! Also he said that one of the VU meters in front was lighting up all the time. Now this guy is not whatever, kind of guy. We go back all the way to school!! Hope some of you guys are prepared to help out? I will post the excact problems on monday, when I get my hands on the amplifier!! Steen

5th July 2005, 03:49 PM	#10
Duo diyAudio Member Join Date: Jun 2002 Location: Victoria, BC, Canada	This is highly interesting. I draw two conclusions. 1: Perhaps the channel with the constant VU indication is oscillating. I have had this happen while only causing a reduce in audible gain and causing the amplifier to run a little warm. 2: I doubt the possibility of this idea, but DC offset?? (You'd have probably noticed that by now.) All VU meters I've seen are AC coupled so far. So I doubt offset is doing it, it's not as if it'd reduce the gain any. Hope that at least gave a bit of input to the subject. __________________ -- Duo, W1ngs, VA7MON, and lesser known handles. -- -- http://www.w1ngselectronics.com -- My Work and Projects --

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Another Threshold Stasis 2 rebuild	AMV8	Pass Labs	2	22nd December 2006 05:13 AM
Threshold Stasis 3, too	Roscor61	Pass Labs	3	20th May 2004 09:12 AM
Threshold Stasis S/300-2 optical a-ab	georgehifi	Solid State	3	30th September 2003 02:18 PM
threshold stasis 2	docjoe	Solid State	2	11th June 2003 11:35 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

2nd July 2005, 08:03 PM	#2
acaudio diyAudio Member Join Date: Sep 2004 Location: Germany	http://www.passlabs.com/np/stasis2-3schem.tif ??? Adam

2nd July 2005, 08:11 PM	#3
steenoe diyAudio Member Join Date: Mar 2004	Thanks a lot Adam, but I have a persisting problem; File does not excist. Can you download the tif file?? I can not. Steen.

2nd July 2005, 08:51 PM	#4
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	It comes up for me. Grey

2nd July 2005, 09:09 PM	#6
steenoe diyAudio Member Join Date: Mar 2004	Thanks a lot, guys. I just uninstalled DAP, and then I could download the document Well, from my first posting, any ideas how to get this running again?? This Monday I will try to do some measuring. Steen.

5th July 2005, 08:11 AM	#7
steenoe diyAudio Member Join Date: Mar 2004	Does any of you have a service manual for this amp? A link to it would also be fine. The amp itself actually sound pretty good, only one channel is a bit louder than the other and from the Peak meter on the front, it seems like one channel is putting out some more signal than the other. Even without a signal, the leds lights up. (the first 4-5 leds). Any thoughts on that problem? I would really appreciate a little help on this. This elderly amp, is very finely build Steen

5th July 2005, 03:41 PM	#8
apassgear diyAudio Member Join Date: Nov 2002 Location: Viña del Mar, Torreon	I don't know anything about Stasis, not even seen one. But I would start checking bias and comparing it to the "good" Channel. Next I would check voltages at different nodes. You have beside a seeminly good channel so it should not be that dificult

5th July 2005, 03:45 PM	#9
apassgear diyAudio Member Join Date: Nov 2002 Location: Viña del Mar, Torreon	Steen, Could you post a pic of the inside?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)