Tuning PA D4000.4?

Just got my stereo installed and need to tune the amp. I'm a noobie at it.
Head unit Kenwood KDC-x797
Polk:
I've got a PA D4000.4 amp
Front doors DB+ 652 components
Back doors DB+ 652 coax

Subs 2 db1240 dvc powered by a JL JX500/1

Help me turn the dials to make it sound great.

Thanks

Comments

  • codycatalistcodycatalist Posts: 1,622
    The dials aren't the only thing that make it sound good. You really want to make sure you HU is set correctly too. First make sure your tone controls are all set neutral, make sure "loudness" is set to off. Now turn your sub amp all the way down and set your 4 channel to 1/4th volume.

    Put on some tunes and turn the head unit up until you hear distortion, this is the point where your HU naturally distorts mark that down. Turn the head unit down until it sounds good again and then slowly turn the gain on your 4 channel until the speakers distort again then back it off a smidge. This is the gain level you want your speakers at. Same basic process for the sub gain.

    For setting cross overs on the sub just turn the volume really low and the low pass filter all the way up, put your ear to the sub and start lowering the low pass freq until you hear nothing but the kick drum and bass. That is set. The high pass filter I have on my speakers is set to 120Hz sloped -12 Db. You might not have a slope option but that is where I set mine.

    After that you can mess with tone controls on your HU to perfect the sound.



    Enjoy and welcome to the forum!
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  • codycatalistcodycatalist Posts: 1,622
    Living room

    Mains: Paradigm 90P
    Lows: Velodyne CHT12, Pioneer SW-8Mk2
    Power: Marantz SR7000
    Tv: Samsung UHD 55' Curved 4k

    2 Channel Den

    Mains: SDA2B Upgraded XOs and Binding Posts
    Pre: Denon PRA-1200
    Power: Adcom GFA-545
    TT: Pioneer PL510
    Tv: Samsung UHD 55' 4K

    Noggin Rockin'

    Phillips L2
    Grado SE80
    Harman Kardon CL
    Little dot 1+/GE JAN 5654w

    Closet of Dreams:

    Harman Kardon AVR130
    Yamaha HTR5590
    Polk RTA11TL
    Polk TSI200s
    New Large Advents 25th Anniversary Edition
    Bravo V2/RCA Clear top Conn branded 12AU7
    Yamaha AV-34

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
    " I have always had a champange taste with a beer budget" - Rick88
    "Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
    "Those that don't know, don't know that they don't know." - heiney9
  • txcoastal1txcoastal1 Posts: 9,902
    You Can Tune a stereo, but You Can't Tuna Fish
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC
  • Awesome, I'll give it a whirl. Thanks for the info.
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