Free Shipping on All Orders 1-866-764-1801

Vist our Online Store
+ Reply to Thread
Results 1 to 9 of 9
  1. #1

    Member Sales Rating: (0)

    Join Date
    Feb 2009
    Posts
    4

    Default Sub not what I expected

    Okay so I bought a Polk MM1040 and hooked it up to a pioneer 760w 2 channel amp http://www.newegg.com/Product/Produc...82E16882117110 and have it hooked up in bridged mode so it should be putting out 380W rms. I have the crossover on the amp turned off, and the bass boost on the amp turned to 6dB. I set the gain just before the 4V mark for pioneer recievers, which is what I have. With all bass boost turned off there's basically no sound coming from the sub. I have to crank the boost up to 5/6 or 6/6 to get bass with the volume below 1/2 way up. I have the HPF turned on and set to 100hz, and the crossover set to 100hz on the reciever.
    Now my concern, is that before the sub gets very loud(its a 350w sub, it should be louder than my 180w at home), it starts distorting. I'm wondering why this is happening?

  2. #2

    Member Sales Rating: (0)

    Join Date
    Jul 2008
    Posts
    16

    Default

    HPF at 100Hz? Did you mean LPF?

  3. #3

    Member Sales Rating: (3)

    Join Date
    Oct 2004
    Location
    Mid-Michigan
    Posts
    3,549

    Default

    Is your sub hooked up to the right set of pre outs on your head unit? what model of pioneer do you have?
    Speakers:SDA2a, sub:Atlantic Technologies 172 PBM
    Pre:B&K PRO-10MC(2ch)
    Amps:Parasound HCA 1000a
    SourcesOppo DV-970HD, Xbox360, Kenwood KT-5300
    Cables:Philips/RCA/Monster

    Life's short, Listen to SDA's
    Life is short live Sui Juris
    Where did SOPA go?

  4. #4

    Member Sales Rating: (0)

    Join Date
    Feb 2009
    Posts
    4

    Default

    I have this one http://reviews.cnet.com/in-dash-car-...-32815176.html and I know its hooked up properly to the receiver. The settings have a HPF and LPF, one to only play sounds higher than that frequency through the speakers and one to only play sounds lower than a certain frequency through the sub.

  5. #5

    Member Sales Rating: (0)

    Join Date
    Jul 2008
    Posts
    16

    Default

    Do you have HPF/LPF switched on at reciever and amp?
    List your settings please.

  6. #6

    Member Sales Rating: (0)

    Join Date
    Feb 2009
    Posts
    4

    Default

    Okay so I hooked it up to only 1 channel and now it seems to be working better. Maybe the way the amp handles the bridged mode was messing with the sound quality. I'll do some more testing and get back to you.

  7. #7

    Member Sales Rating: (0)

    Join Date
    Feb 2009
    Posts
    4

    Default

    Figured out what the problem was. Apparently the gain needs to be turned all the way up (lowest voltage) for this sub to get the voltage it needs lol. Now I have thunderous bass with almost no EQ or bass boost. Now I'm running a flat EQ with +4 bass setting, and a 6dB boost at 50hz on the amp. Figured it out by using a spreadsheet I found for voltages and gain using a multimeter.

  8. #8

    Member Sales Rating: (1)

    Join Date
    Mar 2004
    Location
    College Station, TX
    Posts
    7,124

    Default

    It sounds like you had the amp bridged to 2 ohms. Those Pioneer's will not handle that which is more than likely the reason for the distortion sound you heard.

    It also explains why putting it on one channel yields better results, as they will do 2-ohm stereo.

    You should have got an amp that was more along the lines of a Kicker ZX300.1.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it

  9. #9

    Member Sales Rating: (0)

    Join Date
    Jan 2009
    Posts
    25

    Unhappy

    i had the same pioneer amp mine wasn't bridgable.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

     

Similar Threads

  1. Replies: 16
    Last Post: 04-27-2008, 07:37 PM
  2. Replies: 11
    Last Post: 01-29-2006, 09:12 AM
  3. I never would have expected this to happen!
    By Strong Bad in forum The Clubhouse
    Replies: 1
    Last Post: 12-21-2005, 09:29 PM

Posting Permissions

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