What amp class do you run?
Results 1 to 11 of 11

This is a discussion on What amp class do you run? within the Electronics/Car Audio forums, part of the Interior Mods category; Seems like class A/B runs hotter but gives better sound and class D runs cooler with more distortion. I have ...

  1. #1
    Registered User
    Join Date
    Mar 2009
    Posts
    127

    What amp class do you run?

    Seems like class A/B runs hotter but gives better sound and class D runs cooler with more distortion.

    I have also read that the SQ of the newer class D amps are just as good as the A/B amps.

    I am wondering if I could get by with a class D amp under the rear floor of my '11 hatch since there is very little if any ventilation….but am concerned about the SQ.

    I could go A/B under the passenger seat but worry about it getting kicked by passengers.

    So………any thoughts out there?

    Thanks.

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    Registered User 11blackwrx's Avatar
    Join Date
    Sep 2011
    Location
    Akron, OH
    Posts
    1,830
    I Support ClubWRX
    i believe it depends on what kind of system you use, u have an amp that only powers my sub and i got a class d mono amp and it works great.
    2011 Subaru WRX Premium
    1988 Ford Mustang GT
    2000 Jeep Wrangler TJ

  4. #3
    He simply abides. SD_GR's Avatar
    Join Date
    Jul 2002
    Location
    CA, US
    Posts
    22,579
    I Support ClubWRX
    Quote Originally Posted by wapam View Post
    Seems like class A/B runs hotter but gives better sound and class D runs cooler with more distortion...
    So………any thoughts out there?

    Thanks.
    Any thoughts will be less relevant than those of, for example, Peter Walker, who has stated that any two amps designed correctly and used within their capacities will not be distinguishable.

    Consider also Ivor Tiefenbrun's famous "garbage in, garbage out" statement.

    Find the best speakers and best crossover you can buy. Then buy an amp that has adequate current and power to drive them. Select a front end that's as clean as you can. End of story.
    WRX Info Links, Courtesy TheJ
    The world breaks everyone and afterward many are strong in the broken places. Ernest Hemingway
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

  5. #4
    Master Baiter EJ257's Avatar
    Join Date
    Aug 2007
    Location
    On a stream bank somewhere
    Posts
    19,735
    I Support ClubWRX
    I run an A/B amplifier (JL Audio G4500). I have Ch 1/2 powering my component speakers up front (Alpine Type-X) and Ch 3/4 bridged to power my sub (JL Audio 10W3).

    If you're looking to power speakers, I would go with an A/B amplifier. If you're just looking at a subwoofer, I would go with a D.

    Quote Originally Posted by SD_GR
    Find the best speakers and best crossover you can buy. Then buy an amp that has adequate current and power to drive them. Select a front end that's as clean as you can. End of story.
    This is sound advice. When shopping for speakers, spend all your money on the fronts. If you even run rear speakers at all, power them off the H/U.

    My setup, with proper sound deadening/insulation, is a very affordable way to increase the SQ in your car.
    2005 WRX STi (Mods | Virtual Dyno)

    Resident Tuner @ WTF Tuning, LLC

    "Never trust anything that bleeds for a week and lives ..."

    UNYSOC

  6. #5
    Admiral Ackbar the 1st mycologist's Avatar
    Join Date
    Oct 2005
    Location
    Late Devonian
    Posts
    13,139
    I Support ClubWRX
    I use a single ended class A 5 watt hand wired tube amp for lots of midrange growl and crunchy overdrive. Fortunately it was made for Sears so it costs near nothing even now.

    Click image for larger version. 

Name:	-4093205555577520.jpg 
Views:	42 
Size:	90.3 KB 
ID:	102481

    Sorry for being a smart-ass, last time I posted the hemi cuda of all car amps and no one noticed.
    "From a little spark may burst a mighty flame." - Dante
    "The stitch is lost unless the thread is knotted." - Italian proverb

  7. #6
    Registered User G8toWRXDave's Avatar
    Join Date
    Sep 2011
    Location
    Western NY
    Posts
    141
    i have a jl audio HD900/5 running my whole system, installed under my drivers seat. it gets warm but has never shut down on me.
    2011 WRX Limited - Dark Grey Metallic
    [Cobb stage 2 93+ SF Intake] [Invidia Catted DP] [SMY Gauge Cluster w/Boost and Volt Gauges] [Monkeybone Racing Heater Vent Gauge Panel w/Oil Pressure and Temp Gauges]
    [Cobb Heatshield] [Kartboy SS] [Weathertech Floorliners] [Hardwired V1 w/Remote Display] [Complete Aftermarket Audio System] [Lighted WRX fender badges]

  8. #7
    Moderator rage-wrx's Avatar
    Join Date
    Aug 2010
    Location
    Yonkers/NYC
    Posts
    10,793
    I Support ClubWRX
    As you know I run a class A/B amp Massive Audio NX5 Nano Block Series 5-Channel Car Amplifier

    It does get some what hot if you listen to music really loud,which I don't.As of now it is velcored to the carpet.I need to get some bushings to raise it off the floor a little.

    Also FYI you will get a lot of good advise & great prices from vendors on DIYMA.

    Also check out Car Stereo, Mobile Video, Navigation
    T0ny
    2011 WRX
    2012 FXT

    The Big 2011/2012 Mod Thread


    Ooh,hang on. That is the throb of a turbocharged flat four engine. A sound which,all over the world,heralds the imminent arrival of a moron - JC.

  9. #8
    Registered User
    Join Date
    Aug 2011
    Location
    Millbrae CA.
    Posts
    8
    I'm running a XDi805 Arc Audio 5 channel under the driver seat and its great so far and not expensive. Still tweaking and adjusting. Read about it here Arc Audio.
    WRX MY11 SSHB, SPT STS & KB STS,REDLINE BOOTS,KENWOOD KIV-BT901,HAT I61-2 as coaxial FRT, Dayton Audio RS180-4-7 rear, 8" Arc audio subwoofer 2ohm , powered by XDi805 Arc Audio.

  10. #9
    Registered User gunz4me's Avatar
    Join Date
    Dec 2011
    Location
    Louisiana
    Posts
    159
    I ran a HD900/5 in my Mustang but I left it in the car when I sold it. I had less than a day to return it to stock, and didn't want to be bothered with remembering if stuff I removed back in 2007 still worked or not.

    Prior to that I used to be an old school, class ab, Made in USA, purist. The first amplifier to change my mind was a Clarion DPX1851 which is similar in design to some of the Arc Audio KS series amplifiers (class GH). In all honesty, I realized I was wasting money going for sound quality amplifiers on subs then the rest kind of fell into place. Now, I am planning to run my Class AB Lunar Amplifiers in my WRX when I finally get around to building the sound system BUT I wouldn't hesitate to run class d amplifiers from the following lines: Kenwood Excelon, the new Alpine PDX, the MMATS 6 channel, or another JL Audio HD series. The only problem now is that I need 7 channels of amplification so a single 5 channel is out of the question.
    Last edited by gunz4me; 02-20-2012 at 12:32 AM.

  11. #10
    Registered User Bottles's Avatar
    Join Date
    Feb 2012
    Location
    Memphis,TN
    Posts
    31
    It really depends on the system I normally run Class D on my subwoofers/deck speakers and class a/b on door and/or tweeters.

  12. #11
    He simply abides. SD_GR's Avatar
    Join Date
    Jul 2002
    Location
    CA, US
    Posts
    22,579
    I Support ClubWRX
    If the amps are designed correctly and not overdriven it will make zero difference what class their topology uses.
    WRX Info Links, Courtesy TheJ
    The world breaks everyone and afterward many are strong in the broken places. Ernest Hemingway
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •