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Anthem MCA series I and series II differences?


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#1 of 6 OFFLINE   Chriss M

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Posted February 21 2002 - 09:01 AM

Does anyone know what the differences are between the original Anthem MCA series and the newer series II ? I realize there is a new line out now (MCA-20,30,50) but i am looking at puchasing a used model and can't seem to find anything on the difference between series I and II.

Thanks Posted Image

#2 of 6 OFFLINE   Gil D

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Posted February 21 2002 - 11:29 AM

According to Anthem:

Quote:
The MCA20/30/50 have 10-15% more power, larger heatsinks, taller chassis and are generally a heavy duty version of the Series II.


When I asked if the only benefit sonically is more power and if the old vs new would essentially sound the same at normal listening levels:

Quote:
There are enough differences inside besides power increase to justify the extra cost - larger power supply, higher operating voltages (and necessarily larger heatsinks and chassis), but it sounds better even at low levels since the biasing is deeper into Class A and there's less crossover distortion (crossover distortion goes up as signal level goes down).


Unfortunately, the taller chassis and greater heat makes it more difficult for me to fit this amp into my rack, not to mention the higher cost.

#3 of 6 OFFLINE   Gil D

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Posted February 21 2002 - 11:34 AM

Sorry.
Missed that you were looking for differences in the original series vs the Series II.

#4 of 6 OFFLINE   Brian Fellmeth

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Posted February 21 2002 - 12:40 PM

I'm not entirely sure about this, but I recall that the most important improvement is better stability and heat dissapation with low impedance loads.

#5 of 6 OFFLINE   Brandon_T

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Posted February 21 2002 - 01:08 PM

I can't remember exactly what the differences are, but I do know that they are minute. I have a series I mca5 and it absolutely sounds great driving my studio 100's. I don't even notice any kind of problem with heat, and it has no trouble driving the center and rears simultaneously either. Hope this helped at least a little.

Brandon

#6 of 6 OFFLINE   Chriss M

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Posted February 22 2002 - 12:06 AM

thanks for the info everyone Posted Image




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