need assistance choosing a sub amp
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=117641
Printed Date: May 05, 2025 at 8:31 PM
Topic: need assistance choosing a sub amp
Posted By: sciullo779
Subject: need assistance choosing a sub amp
Date Posted: November 10, 2009 at 10:25 PM
im seriously starting to pull my hair out deciding on these amps, i read the choosing an amp post but i still dont know
i have 2 powerbass M-10's in a ported box. each sub is rated at 300Wrms@4ohm 600W@4ohm max single voice coil
they currently are running in a parallel at 600wrms@2ohm 1200W max
and when finding wattage from fuses is it the TOTAL watt count like if the amp has 2x60A fuses you use 120A?
im debating on these amps
this ones a little underpowered but its on the safe side i guess, its perfect but it is a class a/b and im not sure if its putting out what they say it is.........
https://www......com/item_13492_MB+Quart+DSC+1000.1.html
higher powered model-same price- i kinda like this one because i can expand my system but i dont want to blow my subs before im ready to upgrade and its a class d monoblock
https://www.online/CarAu..._DSC15001.aspx
not sure about PG
https://www.online/CarAu...d_RSd6001.aspx
Soundstream STL1.600D 600wrms@2ohm
i really like this amp alot but i heard soundstream went downhill recently
https://www.woofersetc.com/p7757/STL1600D--Soundstream-monoblock-600-Watt-RMS-D-Class-Stealth-Power-Amplifier.htm
JL Audio J2 500.1 500wrms@2ohm
more then likely pushes more then what its rated for. idk its a jl
https://www......com/item_20627_JL+Audio+J2+500.1+-J2500.1-.html
Alpine MRP-M500 500wrms@2ohm
just found this one keeping it in the picture
https://www.crutchfield.com/s_500MRPM500/Alpine-MRP-M500.html?tp=115
thanks for the help guys
and if you wanna suggest something try to keep it under $220
Replies:
Posted By: ragsports
Date Posted: November 11, 2009 at 8:11 PM
The JL Audio and the Alpine are going to be your best choices out of the amps listed, Look into JBL as well.
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Posted By: sciullo779
Date Posted: November 11, 2009 at 9:05 PM
well i mean the subs are rated for a max of 600wrms in, will the jl 500.1 make more then 500wrms possibly?
will i really notice a difference of 100wrms?
and as far as i know my vehicle almost never puts out over 13.8v and the jl is rated at 14.4
Posted By: sciullo779
Date Posted: November 11, 2009 at 9:14 PM
sorry for the double post
what about these
what about JBL GTO7001 (is this too much power?)
https://www......com/item_12248_JBL+GTO7001.html
GTO601.1II - JBL 600 Watt Mono Amplifier
https://www.woofersetc.com/p235/GTO6011II--JBL-600-Watt-Mono-Amplifier.htm
Posted By: ragsports
Date Posted: November 12, 2009 at 8:39 AM
Either of the JBL amps will work. As long as you read the sticky on how to set your gains properly you will have no problem with the amp being rated higher than the woofer. The higher powered amp may give you room to upgrade down the road. As of the 100 watt difference there will be very little or no gain in performance from 500rms to 600 rms. With that being said the JL is most likely underated, i would say it is actually more in the ballpark of 550rms.
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Garbage in EQUALS Garbage out...
Posted By: sciullo779
Date Posted: November 12, 2009 at 12:45 PM
ok, well then its a toss up between the jbl's, the JL, and the alpine mrp 500
or i could push it a little price wise and go for the 620wrms@2ohm ARC mono amp =]
https://www.woofersetc.com/p6859/FD-6001--ARC-Audio-1-Channel-620-Watt-Amplifier.htm
so try to give me a what i should shoot for a #1 amp and a #2 amp
Posted By: blackcivichatch
Date Posted: November 12, 2009 at 12:51 PM
My vote goes to Alpine. But if you want to spend the extra, i would do the JL
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UNLABELED Custom Car Club President
Posted By: pcana11
Date Posted: November 12, 2009 at 8:05 PM
i have the alpine mrp 500 and its bad ass. very tough
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Posted By: blackcivichatch
Date Posted: November 12, 2009 at 9:30 PM
Thats wut I like to hear considering I just ordered an M1000  ------------- UNLABELED Custom Car Club President
Posted By: sciullo779
Date Posted: November 15, 2009 at 6:11 PM
i was looking at power ratings and their all rated at around 14.4-14.5
so if my car only ever sees 13.8v i could more then likely go with a 700-750Wrms amp right? because most amps are slightly overrated, and with less voltage make less power
Posted By: ragsports
Date Posted: November 16, 2009 at 9:31 AM
Yes less voltage will make less power. For example a 40 amp draw at 14.4 volts will make 576 watts as long as the system is 100 percent efficient. That same 40 amps at 13.8 will make 552 watts as long as the system is 100 percent efficient.
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Garbage in EQUALS Garbage out...
Posted By: sciullo779
Date Posted: November 16, 2009 at 9:55 AM
so theoretically i could use a amp rated for a higher wattrms then my subs?
subs rated at 600wrms@2ohm
opinions on these?
https://www.woofersetc.com/p6859/FD-6001--ARC-Audio-1-Channel-620-Watt-Amplifier.htm
https://www.woofersetc.com/p7766/RUB1700--Soundstream-Monoblock-700-Watt-RMS-Rubicon-Series-Subwoofer-Amplifier.htm
https://www.woofersetc.com/p7845/DSC15001D--MB-Quart-Monoblock-1500-Watt-Discus-Series-Class-D-Amplifier.htm
Posted By: ragsports
Date Posted: November 17, 2009 at 12:18 AM
I say yes to the ARC audio, the rest on that list are ok.
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Garbage in EQUALS Garbage out...
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