Acoustat Answer Man is here - Page 10

AcoustatAnswerMan · 10th March 2011, 06:23 PM

Quote:

Originally Posted by palmito

Hi. I own a pair of 2+2's and was wondering if anybody has used the Pass F-3 or F-4 or F-5 amps (bridged) with them? I'm looking to build an amp for them the Impasse preamp/F-x amps are highly rated. Thanks.

It was always Acoustat's official stance (as well as my own personal opinion) to recommend AGAINST using ANY brand of amplifier in bridged-mode for Acoustat speakers. When you bridge an amplifier, each half of the amplifier 'sees' only half the load impedance. Since the Acoustat is already a tough load, you do not want to make it twice as bad.

In the case of driving Acoustats (or other difficult-load speakers), if you need more power, a larger amplifier is the only solution.

MrAcoustat · 11th March 2011, 01:25 AM

Hi my name is Andre MrAcoustat Sevigny i have been with Acoustat's since the early 80s i have owned 2+2s - Spectra 2200s - Spectra 3300s - and three pairs of my favorites 1+1s the one's i own now where modified by Jocelyn Jeanson from Quebec Canada he is very well known in the Acoustat circles they can be seen on Flickr MrAcoustat Photostream they are all metal frame with modifications to the panels and interfaces they weigh 200 pounds each the only thing left to change is the 4 resistors i am waiting for my MS322 50K 22W 1% Caddocks resistors then it should be over ( for now ) but with Jocelyn you NEVER know he's our Canadian ( Roy Esposito ) when he tells me to jump i ask him HOW HIGH.

palmito · 11th March 2011, 04:13 PM

Thanks for the reply to the bridged amp question. The F-4 I asked because I understood that they can be built to produce up to 150 watts/channel when you bias them high enough. I had figured the standard amp at <50 watts was not a good candidate. But my technical knowledge is very lacking, so I may have misunderstood what I read at the Pass threads about the F-4 amp.

I had used a classdaudio sds-254 and had thought of buying another so I could bridge each for more power, but after the recommendation above I will abandon that route.

Thanks again for the very helpful advice/comments.

peleton · 12th March 2011, 03:02 PM

I have monitor 3's with servo amps-one of my kids kicked the cable and it wont work- I changed tubes and still doesnt work--where can I get the amps updated and repaired--Thanks

ahhkundun@hotmail.com
Matthew

hella356 · 12th March 2011, 05:20 PM

Quote:

Originally Posted by peleton

I have monitor 3's with servo amps-one of my kids kicked the cable and it wont work- I changed tubes and still doesnt work--where can I get the amps updated and repaired--Thanks

ahhkundun@hotmail.com
Matthew

Which cable did he kick? IC, power cord? Where are you located?

peleton · 12th March 2011, 05:57 PM

Im in Houston
not sure what he kicked I wasnt there-my wife said she smelled plastic burning so she unplugged it
I just spoke with michael savuto and it look like a minimum of 1600 to fix and upgrade-

hella356 · 12th March 2011, 06:54 PM

I guess the good news is that (according to everyone who's had MS upgrade their Servos) your system will be taken to a new level of performance.

hella356 · 12th March 2011, 07:14 PM

I assume that MS's quote is for work on both of your amps, since doing just one would create an imbalance. What did he think was the issue? I suppose you could fund it by selling your kid off for scientific experiments.

MrAcoustat · 12th March 2011, 11:53 PM

Quote:

Originally Posted by hella356

I guess the good news is that (according to everyone who's had MS upgrade their Servos) your system will be taken to a new level of performance.

Yes you do have the right guy for the job.

AcoustatAnswerMan · 16th March 2011, 07:01 PM

Quote:

Originally Posted by MrAcoustat

Yes you do have the right guy for the job.

I agree, Mike Savuto is THE man to repair/upgrade your servocharge amplfiers.

11th March 2011, 01:25 AM	#92
MrAcoustat diyAudio Member Join Date: Jun 2010 Location: St-Catherine Quebec	Hi my name is Andre MrAcoustat Sevigny i have been with Acoustat's since the early 80s i have owned 2+2s - Spectra 2200s - Spectra 3300s - and three pairs of my favorites 1+1s the one's i own now where modified by Jocelyn Jeanson from Quebec Canada he is very well known in the Acoustat circles they can be seen on Flickr MrAcoustat Photostream they are all metal frame with modifications to the panels and interfaces they weigh 200 pounds each the only thing left to change is the 4 resistors i am waiting for my MS322 50K 22W 1% Caddocks resistors then it should be over ( for now ) but with Jocelyn you NEVER know he's our Canadian ( Roy Esposito ) when he tells me to jump i ask him HOW HIGH. __________________ Chord CPM-2600 amplifier - Chord One cd player - Acoustat 1+1 speakers ( 1984 ) - Acoustat heaven on earth.

12th March 2011, 03:02 PM	#94
peleton diyAudio Member Join Date: Feb 2011	HELP ANSWERMAN I have monitor 3's with servo amps-one of my kids kicked the cable and it wont work- I changed tubes and still doesnt work--where can I get the amps updated and repaired--Thanks ahhkundun@hotmail.com Matthew

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11th March 2011, 04:13 PM	#93
palmito diyAudio Member Join Date: Dec 2010 Location: Florida,US	Thanks for the reply to the bridged amp question. The F-4 I asked because I understood that they can be built to produce up to 150 watts/channel when you bias them high enough. I had figured the standard amp at <50 watts was not a good candidate. But my technical knowledge is very lacking, so I may have misunderstood what I read at the Pass threads about the F-4 amp. I had used a classdaudio sds-254 and had thought of buying another so I could bridge each for more power, but after the recommendation above I will abandon that route. Thanks again for the very helpful advice/comments.

12th March 2011, 05:57 PM	#96
peleton diyAudio Member Join Date: Feb 2011	Im in Houston not sure what he kicked I wasnt there-my wife said she smelled plastic burning so she unplugged it I just spoke with michael savuto and it look like a minimum of 1600 to fix and upgrade-

12th March 2011, 06:54 PM	#97
hella356 diyAudio Member Join Date: Feb 2009	I guess the good news is that (according to everyone who's had MS upgrade their Servos) your system will be taken to a new level of performance.

12th March 2011, 07:14 PM	#98
hella356 diyAudio Member Join Date: Feb 2009	I assume that MS's quote is for work on both of your amps, since doing just one would create an imbalance. What did he think was the issue? I suppose you could fund it by selling your kid off for scientific experiments.