Audio Advice Needed
09-12-2010, 01:25 AM
#1
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Audio Advice Needed
Hey guys, I'm not a car audio expert by any means so need your advice on my audio setup.
What I have:
Alpine X305S head unit
Hertz HSK 165 6.5" components (just got em, not installed yet) - 125w RMS
JL Audio 500/1 sub amp
Pioneer Premier TS-W2502D4 10" sub (800w RMS)
What I want:
4ch or 5ch amp
Since I just got the Hertz components, I need an amp to power them (HU amp definitely not sufficient). However, I wanted to replace the JL 500/1 amp with either a compact 4 or 5 channel amp to power both the front speakers and the Pioneer sub.
My question is, would a decent 4 channel amp bridged work for this, or would it overpower the front speakers? Or should I get a 5 channel amp, even though I don't intend to buy rear speakers?
Here's what I'm looking at:
Kenwood XR-4S:
# RMS Power Rating:
* 4 ohms: 120 watts x 4 chan.
* 2 ohms: 150 watts x 4 chan.
* Bridged, 4 ohms: 300 watts x 2 chan.
Alpine PDX-4:
# 100 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
# 200 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
If this Kenwood/Alpine amp isn't ideal, do you have any experiences with good 4 or 5 channel amps that would work for this purpose?
Any advice would be appreciated!
What I have:
Alpine X305S head unit
Hertz HSK 165 6.5" components (just got em, not installed yet) - 125w RMS
JL Audio 500/1 sub amp
Pioneer Premier TS-W2502D4 10" sub (800w RMS)
What I want:
4ch or 5ch amp
Since I just got the Hertz components, I need an amp to power them (HU amp definitely not sufficient). However, I wanted to replace the JL 500/1 amp with either a compact 4 or 5 channel amp to power both the front speakers and the Pioneer sub.
My question is, would a decent 4 channel amp bridged work for this, or would it overpower the front speakers? Or should I get a 5 channel amp, even though I don't intend to buy rear speakers?
Here's what I'm looking at:
Kenwood XR-4S:
# RMS Power Rating:
* 4 ohms: 120 watts x 4 chan.
* 2 ohms: 150 watts x 4 chan.
* Bridged, 4 ohms: 300 watts x 2 chan.
Alpine PDX-4:
# 100 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
# 200 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
If this Kenwood/Alpine amp isn't ideal, do you have any experiences with good 4 or 5 channel amps that would work for this purpose?
Any advice would be appreciated!
09-12-2010, 05:39 AM
#2
Registered User
If you can still find it online, I would look for the Alpine MRV-F345 or MRV-F545.
These four channel amps are outstanding; I have the F345 in two of my vehicles, including the S2000. The MRV-F345 puts out 75w x 2 + 300w x 1 at 4 ohms, the MRV-F545 puts out 125w x 2 + 500w x 1 at 4 ohms. Don't worry about the front components; you can always turn your gain down.
These four channel amps are outstanding; I have the F345 in two of my vehicles, including the S2000. The MRV-F345 puts out 75w x 2 + 300w x 1 at 4 ohms, the MRV-F545 puts out 125w x 2 + 500w x 1 at 4 ohms. Don't worry about the front components; you can always turn your gain down.
09-12-2010, 05:14 PM
#3
Generally I'd say go with a 4-channel amp, using the front channels to
power the components and the rear channels bridged to power the sub...
However, it looks like your sub is a dual 4-ohm, which means it needs to be
hooked up either in series as an 8-ohm, or in parallel as 2-ohm, so you need
an amp that is 2-ohm stable in the configuration you intend to use it, and a
lot of amps aren't 2-ohm stable when bridged.
so, look around for an amp that's 2-ohm stable when bridged (would be
one rated to 1-ohm unbridged), or one with a separate sub channel that's
2-ohm stable (such as most five-channel amps) or keep your existing
sub amp and get a separate amp for the components.
power the components and the rear channels bridged to power the sub...
However, it looks like your sub is a dual 4-ohm, which means it needs to be
hooked up either in series as an 8-ohm, or in parallel as 2-ohm, so you need
an amp that is 2-ohm stable in the configuration you intend to use it, and a
lot of amps aren't 2-ohm stable when bridged.
so, look around for an amp that's 2-ohm stable when bridged (would be
one rated to 1-ohm unbridged), or one with a separate sub channel that's
2-ohm stable (such as most five-channel amps) or keep your existing
sub amp and get a separate amp for the components.
09-13-2010, 08:18 AM
#4
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Originally Posted by oth,Sep 12 2010, 05:14 PM
Generally I'd say go with a 4-channel amp, using the front channels to
power the components and the rear channels bridged to power the sub...
However, it looks like your sub is a dual 4-ohm, which means it needs to be
hooked up either in series as an 8-ohm, or in parallel as 2-ohm, so you need
an amp that is 2-ohm stable in the configuration you intend to use it, and a
lot of amps aren't 2-ohm stable when bridged.
so, look around for an amp that's 2-ohm stable when bridged (would be
one rated to 1-ohm unbridged), or one with a separate sub channel that's
2-ohm stable (such as most five-channel amps) or keep your existing
sub amp and get a separate amp for the components.
power the components and the rear channels bridged to power the sub...
However, it looks like your sub is a dual 4-ohm, which means it needs to be
hooked up either in series as an 8-ohm, or in parallel as 2-ohm, so you need
an amp that is 2-ohm stable in the configuration you intend to use it, and a
lot of amps aren't 2-ohm stable when bridged.
so, look around for an amp that's 2-ohm stable when bridged (would be
one rated to 1-ohm unbridged), or one with a separate sub channel that's
2-ohm stable (such as most five-channel amps) or keep your existing
sub amp and get a separate amp for the components.
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