solid audio D2500 and F2000 have a LOT of difference between them
F2000
300 watts RMS * 2 @ 4 ohms or 500 watt RMS * 2 @ 2 ohms or 1000watt RMS *1 @ 4 ohm
F2500D
1200 watts RMS *1 @ 4 ohms
1600 watts RMS *1 @ 2 ohms
2500 watts RMS *1 @ 1 ohms
See the RMS difference and also F2000 is not even stable to 1 OHM
F2000 is a Stereo amp, hence less effecient.( 70% atmost)
F2500D is a mono amp (specificaly made for SUBS), more efficient ( upto 90 %) like mono amps r supposed to be.
Please Dont misguide PW's 