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Class D Amp Advice

Discussion in 'Audio & Video' started by XJBaylor, Nov 29, 2011.

  1. Nov 29, 2011 at 1:13 PM
    #1
    XJBaylor

    XJBaylor [OP] Well-Known Member

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    I have narrowed my amplifier choices down to either the Alpine MRX-V60 and the JL XD500/3. I had considered the PDX-5 and XR-5S, but neither offers much that the Alpine doesn't, and neither has the ability to remotely control gain. I am still interested in the XD700/5, but as far as I am concerned the V60 is too similar to justify the price difference.

    Between the V60 and the 500/3 the V60 provides more power, while the 500/3 will give me a cleaner install. It will slide a little further under the driver's seat, and all the wiring is in the same place, so it is my aesthetic preference.

    I guess what it comes down to is this...

    Will I miss the increased power to the front speakers? (probably)
    Am I giving up too much potential versatility with a 3-channel vs 5-channel? (likely)
    I know the JL HD is the cream-of-the-crop of the class-D multi-channel family. Does the XD benefit hugely from this, or is the difference between the V60 and the XD going to be theoretical more than practical. (I bet so)

    I am pretty sure I am going with the Alpine, but I figured I would post here for a push in the right direction.
     
  2. Nov 29, 2011 at 1:54 PM
    #2
    mattg43

    mattg43 Well-Known Member

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    Yes, you will miss double the power in the Alpine vs. the JL.

    Yes, you will get greater versatility and wiring options if you go the with Alpine.

    The XD is a solid platform, but Alpine is no Boss Audio. Both will be solid amps.

    I dont know what the V60 sells for, but it looks like a decent little amp.

    I can tell you that car audio sites will have amps like the XD700/5, XR5s, and PDX5 for under $350. I sold my own XR5s for around $300...

    I dont know if the extra power is needed (probably not), but the same side wiring on all 3 may make the amps worth a few extra bucks for you.

    Good luck!
     
  3. Nov 29, 2011 at 4:03 PM
    #3
    XJBaylor

    XJBaylor [OP] Well-Known Member

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    I agree with everything you said, but for some reason I just keep leaning towards the JL amps because of the success of the HD900.5. When all is said and done, the MRX-V60 really may be one of the best deals in car audio, I just can't stop looking at the XD700/5. Oh well, back to waffling.
     
  4. Nov 29, 2011 at 8:02 PM
    #4
    lbridges

    lbridges Well-Known Member

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    I've owned Alpine amps, still have an Alpine headunit in one of the family cars, and I am currently running a JL Audio XD 600/6 in my Tacoma. From my experience, but no objective tests on current models, I would say the JL family benefit (compared to Alpine) is in the noise rejection circuitry. Crank up the volume on a track with digital silence if you can find them side-by-side in a showroom. Old data point, but I found the JL to be quieter. Is that theory or practical - maybe a little of both - the difference was there no doubt, but my ears weren't golden enough to hear any difference when music was present.
     
  5. Nov 30, 2011 at 12:59 PM
    #5
    06SR5canada

    06SR5canada Well-Known Member

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    Sundown 1500d for subs and a 125.2 for front comps sundown>JL
     
  6. Nov 30, 2011 at 3:19 PM
    #6
    XJBaylor

    XJBaylor [OP] Well-Known Member

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    I want one amp. One particularly small amp. I realize that there are better options from am SQ perspective, but that wasn't my question.
     
  7. Nov 30, 2011 at 9:17 PM
    #7
    81shark

    81shark Well-Known Member

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    i'm sure both are good selections...

    i've had a couple of different alpine amps and was pleased with both...

    currently running the PDX 5 with no complaints. tucks up very nice under the drivers seat

    the V60 doesn't look bad, nor do the JL amps
     
  8. Dec 1, 2011 at 7:54 AM
    #8
    mattg43

    mattg43 Well-Known Member

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    He is just a JL hater/Sundown nut hugger. Nothing wrong with either, but its important to know when you get recommendations - they are probably biased.

    Along those lines - I have owned/ran gear from all of the brands discussed in the thread. Including Sundown.

    If you want a one amp solution, you are stuck with class D (if it has to fit under a seat) or a digital switching variant. The current line of class D amps are all fairly good, with the exception of some noise issues on early PDX amps (not all of them, but enough to be aware of).

    Beyond that, with a good install, you will be hard pressed (if it is even possible) to hear an audible difference that isnt caused by a gain or power difference. ESPECIALLY WHEN DRIVING.

    I would get the most power possible in a configuration that works for you, from a known company with good reputation or a warranty, and go from there. Ignore the psyco-acoustic BS, and go.
     
  9. Dec 1, 2011 at 9:03 AM
    #9
    XJBaylor

    XJBaylor [OP] Well-Known Member

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    I agree, and had the same thoughts all along. I took your (and my own I guess) advice and bought the MRX-V60. For under $300 I will get over 150wpc to my fronts, and (according to birth sheets many have received) nearly 400w RMS @ 2ohms to my SWR-843d. Beyond that, it has a subsonic filter, which at this point is more useful to me than the 24db/octave LPF option on the JL. $30 more for the Alpine remote bass knob and I got everything I wanted for right at what I hoped to spend.

    Thanks again for the advice.
     
  10. Dec 1, 2011 at 9:21 AM
    #10
    TurboGT

    TurboGT Stirring the pot since...

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    I'll admit to being a JL hater (and RF as well), but that perspective is slowly changing on some fronts, as their amplifiers are starting to grow on me a bit. I am glad however that at least your choices involved quality brands and not some fly by night company.

    Either way you went would have been a good choice.

    Now get us some pics of the install :)
     
  11. Dec 1, 2011 at 10:15 AM
    #11
    06SR5canada

    06SR5canada Well-Known Member

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    If your running a sealed box no need for a ssf
     
  12. Dec 1, 2011 at 10:59 AM
    #12
    XJBaylor

    XJBaylor [OP] Well-Known Member

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    True. I just assumed there was a better chance of me running this amp on another box than me getting deep enough into tuning to be able to successfully utilize such a steep crossover.
     
  13. Dec 1, 2011 at 11:01 AM
    #13
    XJBaylor

    XJBaylor [OP] Well-Known Member

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    I will have to do that when I get the interior pulled out again. I installed the amp and speakers a while ago. As I installed the MRP-F300 originally this will practically be a direct swap. I will have to cut the storage bin to fit Mr. Marv's box, carpet the box, run the speaker wire to the sub, and deaden the front doors and back wall.

    I will try to remember to get pictures as I do all of this!
     
  14. Dec 3, 2011 at 5:42 AM
    #14
    STxTaco

    STxTaco Active Member

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    Thanks for the info and post guys....I ordered an Alpine MRX-60 last night and can't wait to hear the music!
     
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