Hi guys. I've got a question. I got an Alpine MRP-F240 amp which is rated at 40rmsx4.... BUT that is at 14.4V... So my question is, is it worth using this amp over my deck's internal amp (18rmsx4)..... Will I notice a big difference between the internal amp of my deck and the external amp?
Replies (6)
UKinstaller on 04/27/2005 15:30:54
DEFINITELY. any amplifier on speakers will make them sound much cleaner, and you can turn them up louder without distortion. what kind of speakers???
-UK
toyotaguy on 04/27/2005 15:32:48
alpine sps-170a and sps-690a.. HU is panasonic cq-c5401
UKinstaller on 04/27/2005 15:38:22
gotcha. put the amp on 'em, you won't regret it.
-UK
toyotaguy on 04/27/2005 15:47:17
Ok thanks :) I'm going to hook it up this weekend.
MrBrownstone on 04/27/2005 18:23:24
Head Units average about 3-5 watts per channel...just not from 20Hz to 20kHz. Typically they do 45Hz - 20kHz.
Although they advertise MAX power, head unit ratings are about as accurate as Boss/Legacy ratings. RMS power, is about 1/4 what the ratings are for max...and they really won't do full range.
Think about it, if a CD player reserves about 1 thumbs worth of size to amplify the signal, how much more would a 40Wx4 amplifier be able to produce?
swez on 04/27/2005 18:28:25
If your HU puts out a clean 15 Wrms x 4, are doing OK. But an amp that puts out 40 x 4 will net about +4 dB of sound per channel over the HU power amps. Plus, you have HP/LP filtering on the amp. Most HU's don't have that feature.This is where you can concentrate your power to specific frequency bands too. Hense, more drive to the speakers.
Swez
Replies (6)
UKinstaller on 04/27/2005 15:30:54
DEFINITELY. any amplifier on speakers will make them sound much cleaner, and you can turn them up louder without distortion. what kind of speakers???
-UK
toyotaguy on 04/27/2005 15:32:48
alpine sps-170a and sps-690a.. HU is panasonic cq-c5401
UKinstaller on 04/27/2005 15:38:22
gotcha. put the amp on 'em, you won't regret it.
-UK
toyotaguy on 04/27/2005 15:47:17
Ok thanks :) I'm going to hook it up this weekend.
MrBrownstone on 04/27/2005 18:23:24
Head Units average about 3-5 watts per channel...just not from 20Hz to 20kHz. Typically they do 45Hz - 20kHz.
Although they advertise MAX power, head unit ratings are about as accurate as Boss/Legacy ratings. RMS power, is about 1/4 what the ratings are for max...and they really won't do full range.
Think about it, if a CD player reserves about 1 thumbs worth of size to amplify the signal, how much more would a 40Wx4 amplifier be able to produce?
swez on 04/27/2005 18:28:25
If your HU puts out a clean 15 Wrms x 4, are doing OK. But an amp that puts out 40 x 4 will net about +4 dB of sound per channel over the HU power amps. Plus, you have HP/LP filtering on the amp. Most HU's don't have that feature.This is where you can concentrate your power to specific frequency bands too. Hense, more drive to the speakers.
Swez
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