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HU>Speaker Amp/Sub Amp.. no sub RCA. Only front and rear rca

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HU>Speaker Amp/Sub Amp.. no sub RCA. Only front and rear rca

This question is answered

So im finally getting around to upgrade my stereo in my rig. My current setup

Head unit -

http://www.pioneerelectronics.com/PUSA/Car/CD-Receivers/DEH-P5200HD

Subwoofer - 

http://www.pioneerelectronics.com/PUSA/Car/Subwoofers/Champion+Series/TS-W309S4

Subwoofer Amp - 

http://www.fliaudio.co.uk/manuals/1200.pdf <Mod Edit: Linked to Manufacturer's site. Please link to Crutchfield's Item Page or manufacturer's website. Thanks.>

And looking to buy speakers (two 5.25" and two 6x9") pair with an amp.

(currently my rig has four 6x9" speakers.. 3 of which work.. not sure how the are wired.. assuming its to the head unit using the wire harness. not RCAs)

 

My dilemma, my head unit has only front and rear RCA outputs (right and left. total of 4. as you can see in the link)

What can i do in my situation to make everything work?.. Im an extreme newb at car audio.. Ive been reading and trying to learn for the past 4 days as much as possible but i cant seem to find the right guidance. My plan is just to add the 4 new speakers and the speaker amp, on top of the current sub.

 

My question is how can i wire up the 2 amps from the head unit? My current amp for the sub DOES have a bass remote controller (although it sucks) so ive read somewhere that was neededish. Given i haven quite picked out a speaker amp (or speakers).. mainly because im unsure of what i need on it (low pass filter? or not needed cuz head unit has them?).. I included a link to the head unit so you can see the specs on it for a more specific answer.

 

Sorrry for the repeating.. im not quite sure really how to ask the question.. but ask me any question you have and i will reply asap so i can get this situation figured out.



[edited by: TigerHeli at 11:33 AM (GMT -5) on Thu, Apr 12 2012] http://www.sonicelectronix.com/item_36673_FLI-Audio-FL1200M-F2.html
Verified Answer
  • Yes, the high and lowpass filter in the head are recommended to use. You can set the rear/sub RCA preouts to 'sub' in the head audio settings, and use that for the sub amp. Use a 2 channel line output convertor on the rear speaker wire outputs from the head, or if you get a 4 channel amp with speaker level inputs, just use those for the rear channels, and the normal RCA patch cable for the front head RCA preouts/amp RCA inputs.

    Do you already have the head, amp, and sub ? There are better amp and sub pairings. I doubt that amp outputs what it claims. You need an amp that does 400 watts RMS to 4 ohms.

    What is the make, mofel, bodystyle, and trim of the vehicle you need 4 new speakers in ?



    [edited by: GLH at 1:45 AM (GMT -5) on Thu, Apr 12 2012]

    GLH Geeked

All Replies
  • Yes, the high and lowpass filter in the head are recommended to use. You can set the rear/sub RCA preouts to 'sub' in the head audio settings, and use that for the sub amp. Use a 2 channel line output convertor on the rear speaker wire outputs from the head, or if you get a 4 channel amp with speaker level inputs, just use those for the rear channels, and the normal RCA patch cable for the front head RCA preouts/amp RCA inputs.

    Do you already have the head, amp, and sub ? There are better amp and sub pairings. I doubt that amp outputs what it claims. You need an amp that does 400 watts RMS to 4 ohms.

    What is the make, mofel, bodystyle, and trim of the vehicle you need 4 new speakers in ?



    [edited by: GLH at 1:45 AM (GMT -5) on Thu, Apr 12 2012]

    GLH Geeked

  • Subwoofer amp is Class AB and has a 40A fuse - it should do about 300W RMS based on that, but that would be at 2-ohms.  I would expect it to do about half it's rated power at 4-ohms or roughly 200W RMS.

    Main amp if used for full-range speakers will not need an LPF, but an HPF would be useful.

    There are two features to look for in the main amp:

    • If you will be using the subwoofer mode RCA's on the head unit - you want an amp with speaker-level inputs - or you can just buy a LOC as GLH mentioned.
    • Alternately - since the sub has a remote knob (but it is a remote bass boost knob, not a remote level control), you could use the front and rear RCA's on the head unit to the main amp and get a main amp with RCA OUTPUTs to feed the subwoofer amp - not recommended with the type of bass remote you have, though.

    Hope This Helps!!!

    Anyone else have suggestions?

    2002 Ford Focus JVC KD-A815 Sony CDX-GT410u Sony XT-100HD HD Tuner Stock speakers, no amp, no subs

  • TigerHeli
    you could use the front and rear RCA's on the head unit to the main amp and get a main amp with RCA OUTPUTs to feed the subwoofer amp

    But then the HPF of the head would affect the subwoofer, or eliminate bass from it.



    [edited by: GLH at 2:20 AM (GMT -5) on Fri, Apr 13 2012]

    GLH Geeked

  • HU/Sub amp/Sub is all already in the vehicle.. which is a 1990 Daihatsu Rocky.. a black sheep among vehicles.. amp claims 400watt rms at 4 ohm.. and claims 600watts at 2ohm.. but i thought halving the ohms made it double power? but like i said im a newbie (which i MIGHT parallel later on with a matching sub [would that be safe? as the sub is rated for 4 ohms].. would be purchasing a new amp if so.. later on so the 2 ohm doesnt really matter on the amp currently)

     

    what would you recommend for speakers/speaker amp.. along with how you would set it up at this point... step by step would be fantastic =) . like i said before. im going with two 6x9 and two 5.25 speakers (due to fitment.. guna put the 5.25 in the door and it will barely clear the window so i cant go 6.5) not looking for something incredibly loud.. but im looking for a good overall sound. mostly listen to electronic music.. dubstep/techno.. with some rock mixed in. althought component speakers sound better all around the price is killing me.. looking to spend around 250-300 for it all. (wires/speakers/amps/distribution blocks. etc)

     

     

  • was looking at the fli audio range.. the integrator 9 and 5 (6x9 and 5.25) 

    6x9 claims.. 125rms, 4 ohm, 375peak.. each ($60 pair)

    5.25 claims.. 60rms, 4 ohm each, 160peak.. each ($30 pair)

    ive heard that fli is quite popular over in Britain but id go off experts recommendations obviously..

    as for a speaker amp.. i have no idea.. thats part of what im trying to figure out.

  • doors - http://www.crutchfield.com/p_065SE50/Boston-Acoustics-SE50.html?tp=105

    back panel - http://www.crutchfield.com/p_575R1693/Rockford-Fosgate-Prime-R1693.html?tp=105

    4 channel amp - http://www.crutchfield.com/p_777M4050/Sound-Ordnance-M-4050.html?tp=35782

    GLH Geeked

  • so i would set it up like this?

    sorry for my micro paint skills.. lol

    http://s292.photobucket.com/albums/mm24/ApriliaV4/?action=view&current=Untitled-2.jpg

     

    http://i292.photobucket.com/albums/mm24/ApriliaV4/Untitled-2.jpg

     

    <a href="http://s292.photobucket.com/albums/mm24/ApriliaV4/?action=view&amp;current=Untitled-2.jpg" target="_blank"><img src="http://i292.photobucket.com/albums/mm24/ApriliaV4/Untitled-2.jpg" border="0" alt="Photobucket"></a>

     

     

    not sure which link will work here so i just put em all on it

  • also for the 2 channel converter.. do i need a hi to low converter? or a low level.. or?

  • line out convertor - http://www.crutchfield.com/p_142LOC80/Scosche-LOC80.html

    GLH Geeked

  • GLH
    TigerHeli
    you could use the front and rear RCA's on the head unit to the main amp and get a main amp with RCA OUTPUTs to feed the subwoofer amp
    But then the HPF of the head would affect the subwoofer, or eliminate bass from it.

    Right, you would want a main amp with HPF's and would not want to use the ones in the head unit.

    Paint skills look correct.

    Hope This Helps!!!

    Anyone else have suggestions?

     

    2002 Ford Focus JVC KD-A815 Sony CDX-GT410u Sony XT-100HD HD Tuner Stock speakers, no amp, no subs

  • MoTaRdeD
    but i thought halving the ohms made it double power?

    Only on high-quality amps with a fully-regulated power supply.



    [edited by: J Ro at 6:37 PM (GMT -5) on Mon, Apr 23 2012] minor clarification. the best full-range class D amps may make no more power with half the impedance, yet are regulated... but are not fully-regulated. i like the term "intelligently regulated," but haven't seen anyone else use it.

    2002 Ford Focus JVC KD-A815 Sony CDX-GT410u Sony XT-100HD HD Tuner Stock speakers, no amp, no subs