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Austin Armstrong Amps

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Category: General
Forum Name: General Forum
Forum Description: Open Discussion / Questions
URL: https://forum.speakerplans.com/forum_posts.asp?TID=103125
Printed Date: 03 June 2023 at 12:57pm
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com


Topic: Austin Armstrong Amps
Posted By: mattd
Subject: Austin Armstrong Amps
Date Posted: 10 January 2019 at 5:58pm
My friend has bought a large ASS sound system that came with 3 four channel Austin Armstrong Q3000  amps.

Not much online about these, they are old heavy weights 4U high and have a dual power supply.

He is looking for RMS ratings for these - Can anyone help?

Also any general info and comments/history would be great.



Replies:
Posted By: MattStolton
Date Posted: 10 January 2019 at 6:42pm
I had a AA Quad amp kicking about, 2000 ish IIRC, so about 4x 500W per channel at 4Ohm. Kind of implies what your Q3000 might do.

Had a nasty habit of setting fire to a small daughter board off the main channel PCB, and then AA disappeared.

I did find a website a few years later who claimed to be something born out of the old - http://www.verus-audio.co.uk/index.htm%20" rel="nofollow - http://www.verus-audio.co.uk/index.htm Don't know if still current, but might be worth a punt to say hello to them.

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Matt Stolton - Technical Director (!!!) - http://www.wildingsound.co.uk" rel="nofollow - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains"


Posted By: colint
Date Posted: 10 January 2019 at 8:49pm
From memory the Q3000 was 750 per channel into 4 ohms, there was also a Q2000 (as above) and a Q1000.
Tony used these amps on his systems for a while, they were designed by Richard Collins I believe the later variants were renamed Monitec. speak to member Monitec (richard on here he's a member)

Edit...    https://forum.speakerplans.com/member_profile.asp?PF=3336" rel="nofollow - https://forum.speakerplans.com/member_profile.asp?PF=3336


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Never criticise another man until you've walked a mile in his shoes. Once you have, call him what you like, you're a mile away and you've got his shoes!


Posted By: mattd
Date Posted: 12 January 2019 at 12:39pm
Many thanks for your replies
 SP never fails for that! Monitec has serviced our amps in the past I believe :)


Posted By: Monitech
Date Posted: 14 January 2019 at 3:25pm
if they are the amp's from Wales, with an ASS concert rig
The 3k in red =1000 w into 2 ohm
The 3k in blue =500 w into 2 ohm
The 3k in white 750 w into 4 ohm



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phoenix out of the ashes


Posted By: digitalfield
Date Posted: 23 February 2023 at 10:46pm
Hi sorry to rehash a old thread, but i recently came across a Virgin Cinema amplifier. A Cepiar 306 C - cant find anything online about it, could anybody tell me the specs of this amplifier?




Posted By: Monitech
Date Posted: 24 February 2023 at 6:51pm
It's 2 X 300 watts in to 4 ohms
May need all off the large cap's changing 


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phoenix out of the ashes


Posted By: digitalfield
Date Posted: 24 February 2023 at 11:44pm
Thanks so much for the info. Here is a picture of the amplifier inside. Looks very clean to me including the caps. Anything else you can tell me about it?

https://ibb.co/tC5C66T


Posted By: Contour
Date Posted: 25 February 2023 at 6:02am
I like it with that V-shape inside, looks cool. 


Posted By: Earplug
Date Posted: 25 February 2023 at 6:35am
Yes, that looks very clean - and neat, definitely.

One, or maybe 2 of the caps in the "V" of the heatsink do look like they've taken a knock. Maybe worth checking those.




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Earplugs Are For Wimps!


Posted By: digitalfield
Date Posted: 25 February 2023 at 9:08am
Originally posted by Earplug Earplug wrote:

Yes, that looks very clean - and neat, definitely.

One, or maybe 2 of the caps in the "V" of the heatsink do look like they've taken a knock. Maybe worth checking those.



Thanks, which ones in particular do you think could be troublesome? I'm not quite sure how I'd go about checking them and where I'd get replacements. I'm not a service engineer. I actually picked this amplifier up for £45. Bought it because I thought it was interesting. It seems to work ok, although I haven't tried it on a big rig yet. I only had some small speakers to connect it too. It seemed rather quiet which is why I wanted to know the wattage. The speakers I connected it too were quite small though, plan to connect it to some 600w subs and tops, see how it handles those. There is no volume levels, only input levels on the rear.


Posted By: digitalfield
Date Posted: 25 February 2023 at 9:13am
Originally posted by Contour Contour wrote:

I like it with that V-shape inside, looks cool. 

Yeah when I opened it, that's the first thing I noticed. Looks very well designed and it's built like a tank.


Posted By: Pinyorouk
Date Posted: 25 February 2023 at 9:17am
Feel for any unevenness on top of those blue capacitors. This indicates that the capacitors could be drying out which would result in less capacitance or higher ESR.


Posted By: digitalfield
Date Posted: 25 February 2023 at 9:23am
Originally posted by Pinyorouk Pinyorouk wrote:

Feel for any unevenness on top of those blue capacitors. This indicates that the capacitors could be drying out which would result in less capacitance or higher ESR.
Thanks for the tip, I'll have a look at those. Another interesting thing I noted was it had 1995 stamped into the PCB. I'm guessing the year it was made. To me those blue caps look almost new. Maybe they have been changed in it's lifetime.


Posted By: simonp1100
Date Posted: 25 February 2023 at 9:23am
Nice layout inside & love the V shape heatsink, Looks very "C-Audio" ish to me. 
I am sure that someone at at Austin Armstrong had a link with C-Audio at some point. Maybe someone on here can verify this ?. Smile


Posted By: simonp1100
Date Posted: 25 February 2023 at 9:25am
Originally posted by digitalfield digitalfield wrote:

Originally posted by Pinyorouk Pinyorouk wrote:

Feel for any unevenness on top of those blue capacitors. This indicates that the capacitors could be drying out which would result in less capacitance or higher ESR.
Thanks for the tip, I'll have a look at those. Another interesting thing I noted was it had 1995 stamped into the PCB. I'm guessing the year it was made. To me those blue caps look almost new. Maybe they have been changed in it's lifetime.
Are the caps 4700uf 100V claw type mounting by any chance ?.


Posted By: digitalfield
Date Posted: 25 February 2023 at 9:32am
Originally posted by simonp1100 simonp1100 wrote:

Originally posted by digitalfield digitalfield wrote:

Originally posted by Pinyorouk Pinyorouk wrote:

Feel for any unevenness on top of those blue capacitors. This indicates that the capacitors could be drying out which would result in less capacitance or higher ESR.
Thanks for the tip, I'll have a look at those. Another interesting thing I noted was it had 1995 stamped into the PCB. I'm guessing the year it was made. To me those blue caps look almost new. Maybe they have been changed in it's lifetime.
Are the caps 4700uf 100V claw type mounting by any chance ?.
I'm not quite sure to be honest, but I can get some closer pictures for you later if you like. 


Posted By: Earplug
Date Posted: 25 February 2023 at 9:49am
"Thanks, which ones in particular do you think could be troublesome?"

I'm talking about the smaller blue ones close to the heatsink. They have "slots" on them already, which are there to open up if the capacitor fails due to some stress, excess voltage, etc.

In that case, they will ooze out some muck, or splatter debris around, which obviously has not happened, but worth checking as at least one seems to have a large dent on the top.

I wouldn't bother too much with the larger filter caps. They look fine and most probably still have a good few years of life in them, but given what you paid for the amp, maybe worth getting it all checked out by a (qualified) service engineer.   Smile






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Earplugs Are For Wimps!


Posted By: digitalfield
Date Posted: 25 February 2023 at 9:56am
Originally posted by Earplug Earplug wrote:

"Thanks, which ones in particular do you think could be troublesome?"

I'm talking about the smaller blue ones close to the heatsink. They have "slots" on them already, which are there to open up if the capacitor fails due to some stress, excess voltage, etc.

In that case, they will ooze out some muck, or splatter debris around, which obviously has not happened, but worth checking as at least one seems to have a large dent on the top

I wouldn't bother too much with the larger filter caps. They look fine and most probably still have a good few years of life in them, but given what you paid for the amp, maybe worth getting it all checked out by a (qualified) service engineer.   Smile





Thanks I might just do that, I know some basics but wouldn't like to attempt to do too much myself. I'm glad you guys find this Amplifier interesting, pretty cool what you can find for cheap on eBay 


Posted By: Monitech
Date Posted: 27 February 2023 at 7:13pm
The amp was designed in 1995 , if the main caps have been changed at some point they were 10000uf originally.

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phoenix out of the ashes



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