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C-Audio amps - model history? |
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Stumbler 
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Joined: 25 April 2005 Status: Offline Points: 314 |
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 Posted: 22 January 2009 at 11:20am |
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only had personal experience of 2 x Ra3001, which were always reliable for us over 5 years, often operating in pretty harsh conditions, outdoors indoors etc, only thing we ever did was clean them out once every year or two. get very warm tho
worth noting that the only lightweight models(?) made by c audio, the Pulse range, were copied and used by Crown as the Crown Pulse range, then apparently, a bit later, and slightly changed, as the XS range |
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not as straight forward as i first imagined..
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chickenfizz
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Joined: 17 March 2008 Location: United Kingdom Status: Offline Points: 982 |
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Posted: 22 January 2009 at 11:29am |
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A company I work for has two RA4001 in hire stock, they seem decent enough and reliable considering how much use they get.
I have seen one go bang spectacularly though, with sparks and fire coming out of the front, even this was an easy fix though, just shorted output devices and the soft-start resistor exploding in sympathy. Still gets hired out to this day :) My only criticsm of them is the circuit boards are rather large and flappy with lots of heavy parts on them. Although it's never happened yet I don't imagine it would be impossible for them to come into contact with the case and short out. |
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Robbo
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Joined: 05 December 2005 Location: Shropshire Status: Offline Points: 4226 |
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Posted: 22 January 2009 at 11:36am |
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Just posted a load of SR series amps in the for sale section---in case anyone is interested--Cheers.
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Strange Daze
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Joined: 14 July 2006 Location: United Kingdom Status: Offline Points: 2861 |
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Posted: 22 January 2009 at 1:41pm |
great in my opinion. used to have a 400 on mid duties.... Even when the fan broke, i gigged it hard twice, with no issues... :) |
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appliedian
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Joined: 21 August 2010 Location: durham Status: Offline Points: 1 |
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Posted: 21 August 2010 at 9:14pm |
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Hi wonder if its possible to get hold of the diagrams for tr850 i have a sick one
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kedwardsleisure
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Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4949 |
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Posted: 23 August 2010 at 12:42pm |
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The problem with the TR range is that, just like every other C-Audio unit, there are about 1206 different versions of board revision. One may bear no resemblance to another.
I had the diagram for one TR850 (hand drawn/typewriter) and it bears absolutely no relation to the one I have here at all particularly in the part of the circuit that has gone wrong. It is the TR range that sparked my utter contempt for this era of their output! |
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Kevin
North Staffordshire |
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markie
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Joined: 31 October 2005 Location: Sunny Liskeard. Status: Offline Points: 4570 |
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Posted: 23 August 2010 at 12:52pm |
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I found something on the net that said they had a "Universal transformer" fitted, and that it was possible to upgrade an SR606 to a 707 merely by changing the connections on the transformer????
I have one which has been upgraded. But we'm not 'ad the new Lektrickery long down 'ere in Cornwall, and I don't really understand. Is it that simple????
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If it's got wheels or tits it's gonna cost a fortune
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ceharden
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Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
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Posted: 23 August 2010 at 1:26pm |
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In order to get the unit cost down, C-Audio ordered one transformer for the SR606 and 707 with the windings for both on it.
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kedwardsleisure
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Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4949 |
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Posted: 24 August 2010 at 7:44pm |
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I think the SR707 has a few extra transistors?
Nice simple amps these, relatively speaking! These, the pulse and the GB are my least hated C-Audio products. From me, that is high praise. |
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Kevin
North Staffordshire |
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Aztor
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Joined: 22 September 2010 Location: Norway Status: Offline Points: 381 |
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Posted: 30 May 2012 at 11:47am |
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Is the C-Audio XR5001 stabile in 2ohms? Asking because I need to know if it is bridgeable in 4@ohms.
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wires
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Joined: 21 May 2009 Status: Offline Points: 1365 |
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Posted: 30 May 2012 at 12:31pm |
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In the manual it doesn't specify a 4ohms bridge rating, only 8ohms or 16ohms bridged. Personally at 2000w per channel at 4ohms i wouldn't bother bridging it at 4ohms. |
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djeddie
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Joined: 26 April 2004 Location: Bristol Status: Offline Points: 4125 |
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Posted: 30 May 2012 at 7:00pm |
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No it's not I'm afraid. It makes enough heat with 4Ω a channel!
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Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB
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Dave M wrote: