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  1. #1

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    Default Amp Advice for MM

    I'm installing Polk MM 6510's (front) and 651's (rear) in an 09 Jeep Wrangler and am looking for a 4 channel amp that will provide enough power to the speakers. I'm currently running the stock head unit, but that will be switched out at some point in the future. Also, I plan on adding a sub down the road. Any recommendations are appreciated.

    Thanks!

    Edit: I'm also looking for something that can withstand getting wet as I've been rained on with my top down on multiple occasions.

  2. #2

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    You could try one of these, both of these companies make really good amps with a good bang for your buck. Neither should have heating issues.

    (1) Boston Acoustics GT 475 ($250) 75W x 4
    (2) JL Audio JX360/4 ($250) 70W x 4
    Audison Bit Ten
    Kenwood X595
    Polk MM6501
    Polk MM1240
    Mtx 704x
    Alpine MRX50

  3. #3

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    JL Audio JX 360/4 -- $250
    Alpine F300 -- $200
    MTX RT604 -- $250

    The JL would be my favorite. Their JX line is very nice and comes in at a pretty good price.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

  4. #4

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    I really appreciate the quick responses! I like the Boston Acoustic mentioned above, and the JL seems like a popular option.

    What about this Alpine PDX? I like it because it is built for the marine environment - I took my Jeep offroad today and the cabin flooded.

    Also, I was at Best Buy the other day, and I noticed that this Polk PA 660 actually said "Marine Certified" on the box. Anyone know anything about either the Alipine PDX or the Polk?


    Thanks!

  5. #5

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    I don't know about the Alpine but yes the Polks are marine certified and can be used on a boat so they'd work. Now you gotta realize that no amp will survive under water. Marine certified means it can handle some water getting on it but that doesn't mean it can be submerged.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

  6. #6

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    Alpine is a really good brand. Pdx is a full range class D amp. Although tonality is the same with these amps, there is a downside that they introduce distortion at high frequencies. Alpine PDX and JL audio HD amps are very good full range class D amps if you want to go that way. I'm sure the Polk would do good as well.

    Honestly, as long as you get one from a good brand you will be fine. Unless you are planning to add a processor and tune the crap out of your system with high end components then I would just focus on features you want (like marine certified). If you don't have a good EQ its all going to sound the same anyway.
    Audison Bit Ten
    Kenwood X595
    Polk MM6501
    Polk MM1240
    Mtx 704x
    Alpine MRX50

  7. #7

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    Quote Originally Posted by MacLeod View Post
    I don't know about the Alpine but yes the Polks are marine certified and can be used on a boat so they'd work. Now you gotta realize that no amp will survive under water. Marine certified means it can handle some water getting on it but that doesn't mean it can be submerged.
    I'm thinking of installing it under the steering column where the factory one would have been, so if that does get submerged, I have bigger issues. I went down to my hood line today and only got a small amount of water on the floor.

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    Quote Originally Posted by pentoncm View Post
    Alpine is a really good brand. Pdx is a full range class D amp. Although tonality is the same with these amps, there is a downside that they introduce distortion at high frequencies. Alpine PDX and JL audio HD amps are very good full range class D amps if you want to go that way. I'm sure the Polk would do good as well.

    Honestly, as long as you get one from a good brand you will be fine. Unless you are planning to add a processor and tune the crap out of your system with high end components then I would just focus on features you want (like marine certified). If you don't have a good EQ its all going to sound the same anyway.
    Appreciate the advice. Would you recommend not going with a Class D since it will only be running the mids and highs? Also, should I look for any certain power output, or do you think they'd all be more or less the same?

  9. #9

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    There is absolutely nothing wrong with class D amps. They make no more distortion than their class AB counterparts. Don't worry about that at all. They're beneficial because they're more efficient and are usually much smaller than a comparable AB.

    If you're routinely dunking your ride into water, I'd get something cheap at your local flea market. Not worth spending that much on something that can get damaged easily. I'd definitely not get something as pricey and nice as a PDX if you're going to be muddin' with it.

    Also, a 4 channel amp is going to be pretty good size so you're not going to be able to install it down around the steering column I don't think. There probably wont be enough room.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

  10. #10

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    I appreciate the advice. I don't know much about this, so everything is helpful.

    I'm not too concerned about water destroying the amp - if my cabin gets flooded, a fried amp will be the least of my concerns - I was just thinking it's probably better to get a marine certified amp if some water splashes on it.

    As far as power goes, I'm guess the more power the better, but is there a minimum power output I should be looking for? According to Crutchfield, the RMS power range on the MM 6501's is 25 - 125. Should I be looking for an amp that's in that range?

  11. #11

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    I wouldnt want anything less than 50 watts per channel. 50-100 would be fine. Probably not gonna find a 4 channel over 100 anyway that doesnt cost $600+.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

  12. #12

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    Thanks. Would you say the higher I can get in that range the better?

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    Absolutely. Its always best to get as much power as you can afford.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

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    Appreciate the advice! I'll let you know what I end up getting.

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    I found this Polk for $200... it looks like it's got enough power. Like it's worth installing?

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    Ive got one of those. Very powerful and nice. Big as hell though. Make sure you take some measurements and make sure it will fit where you think you want to mount it cause its one big dude!
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

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    Yeah. That thing is a monster - I'm trying to figure out where I'd put it. Seems like a great amp for the money though.

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    Any thoughts on this amp from Precision Power?

  19. #19

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    Quote Originally Posted by HurricaneBob View Post
    Any thoughts on this amp from Precision Power?
    Some (me included) believe that this amp is same as Polk's D4000.4
    If you compare them size by size given all the details i'm sure you can see all the similarities. D4000.4 isn't out yet so we can't compare guts (internals of both amps) but i bet they are the same.

    And with that - yes, it is a good amp. Either you want to buy PPI now or wait for a month or 2 for Polk to release D4000.4 i'm sure u'll get same results.

    And was actually going to suggest these 2 since they are small in size (full range class D), have a lot of power, do not cost an arm and a leg and are capable of being fully active - something that sets them apart from most (if not all) amps in that price and power range.
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1

  20. #20

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    I appreciate the input.

    I pulled the trigger on that PPI and also got an AudioControl LCQ1 so that I can keep my stock head unit.

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    Can u post some pics of PPI when u get it? Pics of guts maybe?
    Also if you don't mind I would def like to hear your feedback on that amp when it's installed.
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1

  22. #22

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    Will do. Amp should be arriving tomorrow.

  23. #23

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    As promised...

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  24. #24

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    I got this wiring kit to install the amp... it says it's only for 500 watts, but it's 4 gauge wire.

    Should this wiring kit be sufficient or should I go with something else?

  25. #25

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    Thank you for gut pic, now we need to wait for Polk to finally come out with D4000.4 so we could see if guts are same, outside and specs should do look the same to me.

    As for wiring kit - can you post a link to exactly the one you got? There's a lot of garbage wires out there...
    2008 Nissan Altima
    Kenwood DNX 5140
    Arc Audio IDX and XEQ
    Polk Audio SR6500 active and SR124-dvc sealed
    Polk Audio PA500.4 and PA1200.1

  26. #26

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    No worries. The outside of the Polk does look very similar to the PPI.

    I thought I did link the kit... it's the Monster 500w kit.

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