Message-ID: <4C2BF6FC.5020301@hifidelity.com>
Date: Thu, 01 Jul 2010 02:01:32 +0000
From: Steve Dove <dsp@hifidelity.com>
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Subject: Re: LF: for all the Dreamers out there:
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Those are serious amplifiers.  A certain Big PA Company I used 
to work for used those on sublows (each one drove four 
cabinets of 4 * 18" drivers).  There was a 10kW version, too.

I have two of the 'smaller' versions (7570) -  a paltry 
kilowatt apiece  -  which drive the bottom end on a small 
rental PA.  They 'fell off the back' of old MRI machines and 
were about to be skipped!  Stunningly heavy, which is why most 
big amps nowadays are switchers.

A really interesting feature is the selectable 
voltage-to-current capability, which allows some serious games 
to be played around speaker resonances, although I'm sure that 
wasn't the intention.

It's worth remembering that the parent company, Crown, 
basically invented big-time rock'n'roll PA systems with their 
classic DC-300 back in the late sixties.  Its all their fault.

         73

                Steve


Martin Evans wrote:
> 
> 
> http://cgi.ebay.co.uk/2x-TECHRON-7790-5Kw-audio-amps-MRI-MI-NMR-CROWN-AMCRON-/220629655074?cmd=ViewItem&pt=UK_Consumer_Professional_RL&hash=item335e8d5e22 
> 
> 
> or, if that doesn't copy properly, search eBay UK for item number 
> 220629655074
> 
> Martin   GW3UCJ.
>