+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 21

Reload Thread: Need help adding an amp (2 or 4 chan)

  1. #1
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member



    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Need help adding an amp (2 or 4 chan)

    I have a 2008 Pathfinder, I replaced the front dash tweeters with some Memphis audio tweeters that came with a crossover, i was told to just hook it up and stuff it under the dash... so i did. Man did they make a difference, but i assume they are wired in parallel to the front door speakers.

    Couple days ago i came across some new front door speakers (Polk db691 6x9's) ($20, BNIB!)

    Installed the Polk 6x9's and everything still sounds about the same, they are 4ohm compared to the factory speakers which are 2ohm. I'm guessing I am not seeing any performance because of the power loss between 2 and 4 ohm loads and them begin wired in parallel with the dash tweets.

    Question is i want o amp those 4 speakers. Do I buy a 2 channel amp and keep the tweets wired in parallel with the front door speakers, or do I get a 4 channel amp and separate the tweets from the door speakers?

    I know this is a noob question, and i have no idea what ohm load the tweets are but i know putting two 4 ohm speakers in parallel results in a 2 ohm load presented at amp.

    So, what do i do? And, would i keep the front tweets crossover box if i were to amp them (I assume I would.)

    I have a simple 1000/1 watt sub stage as well.

    Also, as far as keeping control of them fro the HU, do I run an RCA from the back of it to my new (undecided amp.) or can I jump from my JL 1000 from my sub stage.

    I just want to get the most out of these new 6x9's in my doors, actually i have lost some of my mid-bass, i'm guessing they are seeing about 10-15 watts maybe from the HU.

    What is the correct thing to do.

    Current HU is a Kenwood DDX 370

    Amp I am looking at is the JX 360/4, as i stated earlier i already have a JL sub amp so why not keep it the same.

    If there are better amp options please tell me, i'm in no way a fan boy of the main stream sheit, lemme know.

    Last question is, and this will be answered from my current question, but if i were to get a 4 channel amp could i amp my rear door speakers?

    Long question, I know. Appreciate any input. Won't be back online until late this evening.







  2. #2
    mylows10's Avatar
    mylows10 is online now Dc,tantric,singer,phd rep mylows10 is a Supporting Member of the forum!

    mylows10 is a Supporting Vendor of the forum!

    Join Date
    Sep 2009
    Location
    monterey , ca
    Age
    51
    Posts
    18,571
    Post Thanks / Like
    Images
    9
    Mentioned
    482 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Get a 4 channel. Amp the 6x9s and your rears tune the tweets off the deck power as they don't take much power. Also rcas from the back of the deck is best




    pioneer avhx 5500 dvd, gzpa 1.4000 x 2
    ab vfl 350.4 ,7 pc 2150 and a 150 ah power ware agm ,275 amp singer alt , 2nd one coming soon
    cdt 6.5 es 6 im mids,cdt es 010 tweets,es 02 mids ,mx1000 3 way x overs , sky high and stinger hpm o gauge wires ,also 2 tantric hdd 15's in a 9.5. ^3 ported no wall box 11.5 octo port.
    NOR CAL DB DRAG JUDGE
    http://www.dcsoundlab.com

  3. #3
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member

    Threadstarter


    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Quote Originally Posted by mylows10 View Post
    Get a 4 channel. Amp the 6x9s and your rears tune the tweets off the deck power as they don't take much power. Also rcas from the back of the deck is best
    Man are you right about the tweets, those dudes scream and are probably one of the best purchases (of wasted money) I have made.

    Explain in detail how to do this, down to the wire connections. I'm not a complete idiot (aeronautical engineer) I just want to know how to do it right and i can't remember how the back of my HU looked when installed it 6 months ago. tsm




  4. #4
    mylows10's Avatar
    mylows10 is online now Dc,tantric,singer,phd rep mylows10 is a Supporting Member of the forum!

    mylows10 is a Supporting Vendor of the forum!

    Join Date
    Sep 2009
    Location
    monterey , ca
    Age
    51
    Posts
    18,571
    Post Thanks / Like
    Images
    9
    Mentioned
    482 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    If your deck has 3 sets of rcas then your good. 2 sets of rcas from the deck in the frt and rear RCA outputs on the back of the deck to the 4 channel amp. Run wires from the wire harness from the behind the deck ( the harness that connects between the deck and cars harness) then those wires to the amps speaker output




    pioneer avhx 5500 dvd, gzpa 1.4000 x 2
    ab vfl 350.4 ,7 pc 2150 and a 150 ah power ware agm ,275 amp singer alt , 2nd one coming soon
    cdt 6.5 es 6 im mids,cdt es 010 tweets,es 02 mids ,mx1000 3 way x overs , sky high and stinger hpm o gauge wires ,also 2 tantric hdd 15's in a 9.5. ^3 ported no wall box 11.5 octo port.
    NOR CAL DB DRAG JUDGE
    http://www.dcsoundlab.com

  5. #5
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member

    Threadstarter


    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Quote Originally Posted by mylows10 View Post
    If your deck has 3 sets of rcas then your good. 2 sets of rcas from the deck in the frt and rear RCA outputs on the back of the deck to the 4 channel amp. Run wires from the wire harness from the behind the deck ( the harness that connects between the deck and cars harness) then those wires to the amps speaker output
    Hey, i'm sorry but you completely lost me here. I thought that if i was to run the front door speakers and he rear door speakers off the amp then the speaker wires would come out of the 4 chan amp, then the tweets would be ran out of the HU... Explain this in more detail please, i really appreciate it...

    Are you meaning just run the RCA's out of the deck to the amp? My HU is capable of that...




  6. #6
    mylows10's Avatar
    mylows10 is online now Dc,tantric,singer,phd rep mylows10 is a Supporting Member of the forum!

    mylows10 is a Supporting Vendor of the forum!

    Join Date
    Sep 2009
    Location
    monterey , ca
    Age
    51
    Posts
    18,571
    Post Thanks / Like
    Images
    9
    Mentioned
    482 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    You'll need to check the deck for 3 sets of RCA outputs. If you have 3 sets. Then 1 set is for the sub amp. The others are for frt and rear , so that you can add an amp for them. Now the speaker wire from the amp has to go to the speakers. The easiest way is to tap into the stock wires behind the deck by using the wiring harness you had to get for the deck to be installed. If you don't run the wires this way then you'll have to go thru the door jambs and boots which can be a pita The only other wire is the remote which you can jump from the other amps remote location Then jus split the power wire with a distro block and each amp will have their own ground




    pioneer avhx 5500 dvd, gzpa 1.4000 x 2
    ab vfl 350.4 ,7 pc 2150 and a 150 ah power ware agm ,275 amp singer alt , 2nd one coming soon
    cdt 6.5 es 6 im mids,cdt es 010 tweets,es 02 mids ,mx1000 3 way x overs , sky high and stinger hpm o gauge wires ,also 2 tantric hdd 15's in a 9.5. ^3 ported no wall box 11.5 octo port.
    NOR CAL DB DRAG JUDGE
    http://www.dcsoundlab.com

  7. #7
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member

    Threadstarter


    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Sounds legit, thanks. Although i have a separate run of 4ga from the battery to new amp ready, thought this was a must?




  8. #8
    keep_hope_alive's Avatar
    keep_hope_alive is offline Acoustics Engineer keep_hope_alive is a Supporting Member of the forum!



    Join Date
    May 2007
    Location
    Quad Cities, IL
    Posts
    5,917
    Post Thanks / Like
    Images
    28
    Mentioned
    158 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    the HU is listed in the first post
    Kenwood DDX370 DVD receiver at Crutchfield.com
    *3-band parametric equalizer with 8 preset EQ curves
    *high- and low-pass filters
    *subwoofer controls
    *speaker type setting
    *outputs: rear A/V output, 6-channel preamp outputs (4-volt front, rear, subwoofer)

    you don't need separate power runs but isn't hurting anything.

    you'll need six RCA cables to take advantage of the HU's outputs.

    what do you have for rear door speakers? stock or aftermarket?

    the main advantage of using the four channel amp to power the tweeters and 6x9's separately is for level control to help them blend. putting the tweeters (with included crossovers) on the same amp channel as the 6x9 will still result in them being too loud. running the tweeters off teh front HU channels may work out, but you'll live with more distortion from the HU.



    have you been helped by me? i'd love to know. shoot me a PM.

    My 2014 Accord build log: http://mobileaudioforum.com/forum/showthread.php?6722-KHA-2014-Accord-Sport-SQ-Factory-Integration
    *My 2001 Accord build log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/536049-2001-accord-ex-sedan-its-long.html
    *2005 Scion tC Build Log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/516096-2005-scion-tc-sq-hertz-audison-pioneer-build-log.html
    *1998 Astro Van Build Log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/567468-kha-does-spl-build-1996-astro-van.html

  9. #9
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member

    Threadstarter


    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    ^Thanks for the reply,

    The rear door speakers are stock. I follow you on the 4 channel but I'm lost at 6 RCA cables. I thought I would only need 2 sets (front & rear)... but now thinking about that it does not make sense because I am not amping the rear doors, just the tweets and the front doors.

    Man if you could explain what outputs on the back of the HU I am going to exactly need to plug into for this I wold greatly appreciate it. The sub stage is already done (was that 1 of the sets you were inculuding in the 6?) And another noob question, when you say six you mean sets that each have 2 ends on them like the set for my sub right? I had no idea I would need all that but it sounds great giving I can take more control of the speakers from the HU (which is what I want.)

    Just in conclusion, I am wanting to amp the front dash tweets and front door 6x9's. Somewhere I have read that after running a lot of RCA's out of the HU it will lose power... Will my rear speakers still be able to run off the HU? Thanks a lot KHA.




  10. #10
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member

    Threadstarter


    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Bump for little more help




  11. #11
    calebkhill's Avatar
    calebkhill is offline CarAudio.com Elite



    Join Date
    Dec 2012
    Location
    Phenix City, Alabama
    Posts
    1,101
    Post Thanks / Like
    Mentioned
    2 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Ok.....
    You have rcas coming from back of the hu.
    You also have speaker wire cunning from back of the hu.

    Run the front rcas to your 6x9 amp.
    Run the front speaker wires on the wiring harness to your tweets.

    Done

    It is different if you want to amp your tweets.

    I think your making this complicated.

    If i were you, is go ahead and start installing, and if you run into trouble, cone on here.

    If you can hook up your head unit, or even advd player to a tv, you should be able to do this.



    "When I listen to a stereo loudspeaker playback in my room and an auditory scene has formed in my mind, how would I know that what I hear is an accurate replica of an auditory scene that could be had at the recording venue? Or more generally, that this is an auditory scene that could have existed at all?"


  12. #12
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member

    Threadstarter


    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    ^Completely agree, I can install anything, I've just so happened to never have done a 4chan (or anything other than a mono) amp install. KHA mentioned I would need 6 runs of RCA's, I don't see how... I am doing what you are telling me to do as we type. Front doors off front chan on amp rear doors off rear chan on amp and teets off front chan from the HU. Done.

    Anything i am missing? I still want to know where the 6 sets of RCA's came from?




  13. #13
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member

    Threadstarter


    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Bump for anymore input, appreciate in advance...




  14. #14
    Staynlean's Avatar
    Staynlean is online now Senior VIP Member

    Threadstarter


    Join Date
    Mar 2013
    Location
    Memphis, TN
    Posts
    277
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Bump guys...

    Since my rear door speakers are stock should i just go with a 2chan amp?

    Meaning front dash tweets will be run off front chan HU power, 6x9 front door speakers will be run off amp ad rear door speakers will be run off HU as well...

    Is this logical?




  15. #15
    calebkhill's Avatar
    calebkhill is offline CarAudio.com Elite



    Join Date
    Dec 2012
    Location
    Phenix City, Alabama
    Posts
    1,101
    Post Thanks / Like
    Mentioned
    2 Post(s)

    Re: Need help adding an amp (2 or 4 chan)

    Idk, depends.
    Honestly I'd forget about those rear speakers, leave them unplugged.

    If i was you, I'd either find a power 4 channel for future upgrades, or a power 2 channel.
    Unplug the rears.
    Run tweets off hu, mids off amp.

    Have yourself a nice 2 way front stage to tune



    "When I listen to a stereo loudspeaker playback in my room and an auditory scene has formed in my mind, how would I know that what I hear is an accurate replica of an auditory scene that could be had at the recording venue? Or more generally, that this is an auditory scene that could have existed at all?"


  16. Likes Side Show liked this post
+ Reply to Thread
Page 1 of 2 1 2 LastLast

Similar Threads

  1. need help on an amp info
    By raverboy in forum Amplifiers
    Replies: 0
    Last Post: 07-03-2002, 05:39 PM
  2. Need help picking an amp!
    By wildhr in forum Amplifiers
    Replies: 4
    Last Post: 06-18-2002, 07:57 PM
  3. i need help wirring an amp
    By kyle.k in forum Subwoofers
    Replies: 5
    Last Post: 05-18-2002, 03:27 PM
  4. Need help picking an amp...
    By justchillin in forum Amplifiers
    Replies: 14
    Last Post: 03-29-2002, 09:08 PM
  5. Need help finding an amp
    By Unregistered in forum Amplifiers
    Replies: 4
    Last Post: 01-27-2002, 01:24 PM

Posting Permissions

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

1e2 Forum