I need some advice. I need a plate amp to drive a sealed LMS-Ultra 5400 build (3 cu ft; wired for a 4 ohm load). I want to maximize the low frequency capabilities of the sub for home theater use. I was about to pull the trigger on the Minidsp PWR-DSP1 amp, which is rated at 2400 watts RMS and has built in DSP. This uses the pascal amp module (discussed below) which is the same module used by Funk Audio. Anyhow, I came across the following comparison posted in the recent SpeakerPower thread where Brian (the owner) stated the following regarding amp capabilities:
Pascal Xpro3 CH1 only 120VAC mains
1400W/4 1KHz 1% for 2 seconds, dropping to 223W after that
730W/4 40Hz 1% for 10 seconds dropping to 223W after that. Lower frequencies are even worse.
Lab Gruppen FP14000 120VAC mains
3000W/4 for 200 milliseconds dropping to 1500W/4.
4800W/2 for 80 milliseconds dropping to 1500W/2
Yes that's right. Milliseconds. Thousandths of a second.
SpeakerPower SP1-4000 120VAC mains
2400W/4 40Hz 1% indefinitely
4000W/2 40Hz for 4 seconds, dropping to 2000W/2
If "real life" performance is the primary concern, should I go with the SpeakerPower amp? This comparison seems to suggest that the Minidsp Amp (based on the pascal module) is no where near as capable as the SpeakerPower amp. Can anyone help me make an informed decision here? If I go SpeakerPower, then I would have to order a balanced Minidsp to EQ the low end.