knightrider358 wrote:the MS275 is a overall higher power amp which PG has stated in the manual because both of their manuals use the same book cause I have a MS275 now the MPS2240 actually should have more head room than the MS275. PG says that the MPS and MS stands for Mobile Professional Series and Mobile Series basically they are saying that the mps is a better "quality". Also the MPS line of amps should be able to handle a lower load on the channels than the MS amps but then u sacrifice quality sound with kower ohm loads. Now everyone know that PG origanl MPS/MS series amps we're never rated correctly by PG and that was intenional for sound comptitions but the MPS were even more unrated than the MS series. thats why PG always have stated in the manuals what their amps put out @ 12V not 14.4V which you actually should add about 20-30% more watts to what their manuals say. Now my manual says that the MS275 consumes 60 amps of current with a 4ohm mono load and the MPS2240 consumes about 30 amps of current with a 4ohm mono load. So the MS275 to my calcultion can put out around 750W peak bridged @ 4 ohms thats around 375W rms when PG states that amps is 225W rms. So I think you can make a better personal judging call with ur set-up. Also I have a MQ430 for my mids and highs you might wanna look at that amp for you 4-ch set-up its a really loud and clear amp. Now mine has a 2 ohm load on each ch so its does about 75Wx4 rms. Also if any real pro's out hear reading this please feel free to step in and correct me if Im wrong
MS and MPS are mostly identical, but the MPS2240 is geared for low impedances (i.e. 2 ohms bridged/1 ohm stereo), where the MS275 is geared for normal impedances (4 ohms bridged/2 ohm stereo). There's also the MAC200, which is again the same thing, but geared for high impedances (8 ohms bridged/4 ohm stereo).
They all make the same power, just at different impedances. The MPS were popular in early 90's competition, where your system power was rated at the 12v rated wattage. So an MPS2240 would be rated 24 x 2 watts... but that little "50 watt" amplifier can put out 180w at 2 ohms bridged, or with proper cooling, ~300w at 1 ohm bridged. So when your 50w amps give you 300w power, you have an enormous advantage over your competitors.
MS2125 and MPS2500 are the same story. The MS2125 is geared for 2 ohm stereo/4 ohm bridged, and the MPS2500 is geared for 1 ohm stereo/2 ohm bridged. Same power out of both amps at their proper impedance. There should be no sound quality difference between the amps. The setup that will "sound best" is the one with the most power, not necessarily the most headroom. If you gain matched all of the amplifiers to 35x2 at 4 ohms they would all have gobs of headroom anyways.
