Page 3 of 3 FirstFirst 123
Results 21 to 28 of 28

Thread: 1600 watt amp install - need help with power issues

  1. #21
    Constant Bitrate
    Join Date
    Dec 2006
    Posts
    112
    A digital amplifier has a higher efficiency and will be somewhat easier on the power supply.

    Somewhat off topic, some car digital amplifiers have issues with sound. The bass sounds muddy and gives headaches. This is especially true with ported or bandpass boxes because there is a lot less dampening than with a closed box. I never understood why because in studio equipment, digital amplifiers are often praised.

    I ran an Impulse SD-1200 digital amp on a Focal 38-WX subwoofer for a short while. It sucked and I was astonished that an amp could sound as bad.

    But don't be discouraged, hopefully your amp will do fine.

  2. #22
    Newbie
    Join Date
    Jul 2009
    Location
    Vancouver, WA
    Posts
    8
    My bandpass box has the two 12" Pioneer subs, but the banpass box has two sealed/unported boxes inside it that the subs sit in. The only port in the box is in the rear of it, opposite the plexi-glass face. You can see the subs looking into the plexi-glass front, and cant see the magnets because they are inside the boxes inside the box... if that makes sense. There is sound dampening material inside the two inner boxes btw.

    I found a pic online similar to mine: http://www.tulipstuff.com/images/man...s_JENBP210.jpg

    The only difference is that there is a physical seperation of the two inner sub enclosures, and that seperation creates the port to the back of the box.

    I can take a pic of it later today and show you if needed.

  3. #23
    Constant Bitrate
    Join Date
    Dec 2006
    Posts
    112
    It's a 4th order bandpass.
    http://en.wikipedia.org/wiki/Loudspe...d_or_band-pass

    For the purposes of power supply, that's all the info about the box we need I think.

  4. #24
    Newbie
    Join Date
    Jul 2009
    Location
    Vancouver, WA
    Posts
    8
    As far as a battery, I've been reading up on the Optima Red 35 that I was going to get and allot of people slam it because it's Ah is way lower than other comperable batteries.

    I'm not sure which one to get but I dont have a whole lot to spend on one. I found this one: http://www.remybattery.com/Products/...y__9AGM48.aspx

    It's specs are:
    Cranking Amps 875
    Cold Cranking Amps 760
    Ah Rate (20 Hr) 70

    Would this be an adequate power supply for both my car and amp?

  5. #25
    Low Bitrate jake789's Avatar
    Join Date
    Apr 2009
    Posts
    83
    what car do you have?

  6. #26
    Newbie
    Join Date
    Jul 2009
    Location
    Vancouver, WA
    Posts
    8
    it's a 98 VW Jetta GT 2.0L

  7. #27
    Constant Bitrate
    Join Date
    Dec 2006
    Posts
    112
    If I needed a battery, I'd probably want an AGM that's rated for deep cycle use. I use a Varta, forgot the model, but I guess these would not be common where you live.

    You sure your current battery is getting bad? How old is it? Does the starter crank with "enthusiasm"?

    Would really help to know some voltages under load.

    Does the lights dimming get better at more than idle, say 2000 rpm?

    Oh and would a smaller amp be a consideration? :-).

  8. #28
    Newbie
    Join Date
    Jul 2009
    Location
    Vancouver, WA
    Posts
    8
    I had to push start it the other day, after playing the radio for about 20 min, without the amp on and without the car running.

    The car doesnt crank as well as it should either. I dont know how old the battery is. I've had the car for a year, and not sure when the previous owner replaced it.

    I'm doing the "big 3" wiring improvement this Thursday, before I do I'll test and record the voltage under load.

    As far as the dimming lights getting better at higher rpm, I'm not sure. I'll have to test that too.

    A smaller amp would not be a consideration. I love it's power, and am confident I can solve my problems with the big3 wiring improvement, a higher output alternator, and a new battery.


    By the way, the big3 guide I found online said to install an additional 4 guage wire from alt + to batt + and to install an inline fuse on that wire, but it didnt mention what size of a fuse to get.

    Could someone suggest a size? I have a 120amp alternator and by that time will have a Deka 9AGM48 battery.

Page 3 of 3 FirstFirst 123

Similar Threads

  1. Review: M4-ATX 250 Watt Intelligent Power Supply
    By Bugbyte in forum The Review Palace
    Replies: 11
    Last Post: 12-21-2009, 09:52 AM
  2. What Power Supply for Laptop Install?
    By D3LTR33 in forum Newbie
    Replies: 6
    Last Post: 08-04-2008, 07:41 AM
  3. 2007 Scion TC Install
    By deeznudts in forum Worklogs
    Replies: 4
    Last Post: 06-10-2008, 12:03 AM
  4. Power for JL A6450/PC/future amp
    By roflcopter in forum Car Audio
    Replies: 3
    Last Post: 05-20-2008, 03:52 PM
  5. Please help with power issues!
    By 99AznAccord in forum Newbie
    Replies: 6
    Last Post: 02-20-2005, 12:29 AM

Bookmarks

Posting Permissions

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