Alpine PDX Series, or MRV vs ARC/DLS
I do not want to start a war on whether an amp can have SQ or not.
That said, comparing the MRV-F545 to the PDX4.150: aside from the power differences - which is supposed to be a better amp?
I am not completely comfortable with the idea of a full range Class D SQ amp, but it looks like this is placed higher in the heirarchy than the MRV-F series. I am also not completely comfortable with an amp that allegedly runs so hot (I thought class D amps could run cooler?)
I am looking for a clean, high power 4 channel amp. It needs to be reliable, not overheat - and put out lots of clean power at a 4 ohm load. It does not need any signal processing or crossovers.
I am leaning towards a couple of DLS A4's or Arc 4150-XXKs. but I am wondering if I would be able to tell the difference between the DLS/ARC or an alpine PDX/MRV. I can get the alpine stuff much cheaper, and I think the MRV is fan cooled - since the amps are mounted in the trunk of a black car - fans are probably a good thing.
I have used alpine 2 MRV-F400s for many years with good results. I got sick of replacing the output transistors on them (I still have a few new sets left). I finally replaced them with the Mmats I have now (and am happy with except for their size/heat output) I bought an MRV-F540 a couple years ago with the intent of replacing 2 of the Mmats, but it was obviously lacking (in power) so I put the Mmats back in. I did use, and like the MRD-501, but I was only driving a single DVC 10 with it - not much stress, and not much heat - but I had some strange feedback causing subsonic noise if the sub filter was off.
My goal is to run my 3 way front stage fully active, and a rear channel, and a sub. With the equipment I have now that is 5 big 2 channel amps. My G35 doesn't have enough room. I would like to get that down to 2 or 3 amps.
As I said before - I want excellent sound, and reliability. I drive about 50K a year, I need amps that can run all day at high volume and not go into protection or melt. I only run 4 ohm loads other than the sub - so I shouldn't be stressing them too much. And they don't get the luxury of air conditioning, or even much airflow over what they can generate themselves due to fans or convection.
Any input would be appreciated.
'06 G35 6MT Sedan - now bose free -- Alpine IVA-W200 w/ H701, C701, and TR7
DLS Iridium IR3 and IR1 and Adire Extremis 6.8 front stage
Arc Audio 4150XXk for mids and tweets
Arc Audio 4150XXK Bridged for all 4 midbass's
Adire Extremis 6.8 back doors for added kick.
JL12W6V2 in a 1cf sealed w/ PDX1.1000
Refs: Bodegabay, 250+ (100%) on ebay with same username.
04 CBR1000RR - SOUND SYSTEM BY MICRON