Closed Thread
Results 1 to 12 of 12

Reload Thread: Bad distortion problem...

  1. #1
    Pepete's Avatar
    Pepete is offline Junior Member



    Join Date
    Feb 2002
    Location
    Canada
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Bad distortion problem...

    Hi, im new here so Hello everyone! Don't check my spelling or my general typing, cuz I'm from quebec, Canada, and not really good in english.

    I HAVE A PROBLEM with a kit I installed in one of my friend's car ... he told me: I want a clear sound with more bass than my stock radio/speakers can give ... So we did the stores!

    Speakers - Since he had 5"1/4, and nothing bigger than that would fit, I bought the same size, but more powerfull "Phoenix Gold" 5"1/4s

    Radio - He had not much money for that so I went for an ///Alpine 7856 CD receiver, 40x4w pre-amp... it plays amazingly well.

    Sub - He bought a Pioneer 10", the new 2002 one, and put it in a small sealed boxe. It also plays very well

    Amp - He bought a Pioneer GM-X562 (the power it gives is surprising ...) the amp's driving the sub only

    BUT!!! the problem is this: the 5"1/4 are tough and play well, but simply can't handle that much bass ... so they tend to distortion a bit a do stranges glitch sounds.... I installed all that stuff myself, and I know my instalation is good, but I'm not really a pro, since I was more playing with car audio in the 70's ... And the good old solution to distortion in speakers, which was to go buy bigger ones... isn't to consider here since my friend don't want to spend much more money ... so is there any other way I could make his sound better ? (the sub is playing clear, rich bass... it isnt the problem, nor is the amp, since it drives the sub only...) any help would be welcome. thanks in advance.







  2. #2
    Unregistered's Avatar
    Unregistered Guest



    high pass filter for the mids, it sounds like they are getting frequencies to low for them




  3. #3
    Pepete's Avatar
    Pepete is offline Junior Member

    Threadstarter


    Join Date
    Feb 2002
    Location
    Canada
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)

    high pass what ?

    Ok, I have to get a high pass filter for the 5"1/4s ... but as I said in my previous post, I was more playing with car audio in the mid 70's ... so back then there were no "high pass filter" what is is exactly ? how to use it ? where to get it ? How much does it cost ? I know that the principle of it is to limit the frequencies my 5"1/4s have to play ... but not more... please help me again

    thanks
    Last edited by Pepete; 02-28-2002 at 03:39 PM.




  4. #4
    Plater's Avatar
    Plater is offline Member



    Join Date
    Feb 2002
    Location
    Ont. Canada
    Posts
    53
    Post Thanks / Like
    Mentioned
    0 Post(s)

    High Filter

    Well go to your local electronics shop buy a 2 non-polarized capacitors and put them in series with the positive lead of each speaker. To calculated the value of the cap use this eq'n C = 1/((Ohms of speakers)*2*(cut off frequency probally around 150Hz)*(pie 3.14))

    With a speaker impedance of 4 ohms and a cutoff frequency of around 150Hz try to get a cap of around 265uF (micro Farads).




  5. #5
    Pepete's Avatar
    Pepete is offline Junior Member

    Threadstarter


    Join Date
    Feb 2002
    Location
    Canada
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)

    capacitors?

    Sorry, I dont get it, why get a capacitor when all I want is drive the diferent frequencies !?

    tell me, im lost!




  6. #6
    Unregistered's Avatar
    Unregistered Guest



    the reason for the cap is to block the low frequencies from 5 1/4" speakers. The frequencies below 150Hz will be blocked from the speaker. The subs will take care of them and the high frequencies will go to the 5 1/4" speakers

    The cap is a high pass filter




  7. #7
    Pepete's Avatar
    Pepete is offline Junior Member

    Threadstarter


    Join Date
    Feb 2002
    Location
    Canada
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)

    ok!

    Ok, now I understand!

    its clear !

    but Do I need 2 of them ? one on each 5"1/4 speakers ? or would a crossover do the same?




  8. #8
    Plater's Avatar
    Plater is offline Member



    Join Date
    Feb 2002
    Location
    Ont. Canada
    Posts
    53
    Post Thanks / Like
    Mentioned
    0 Post(s)
    the reason for the cap is to block the low frequencies from 5 1/4" speakers. The frequencies below 150Hz will be blocked from the speaker. The subs will take care of them and the high frequencies will go to the 5 1/4" speakers

    The cap is a high pass filter

    The reason that a cap works for a high pass filter is because the impedance(resistance) of the cap changes with frequency and as the frequency increases the resistance lowers allowing more signal to get to the speaker. So at the 150Hz point the cap is blocking half of the power from the speaker, that the speaker would get if the cap wasn't there. Increasing the cap value lowers the frequency at which half the power gets to the speaker and vice versa. Now the frequencies below 150Hz will still be there but they at a lower volume level compared to the rest of the signal.




  9. #9
    Plater's Avatar
    Plater is offline Member



    Join Date
    Feb 2002
    Location
    Ont. Canada
    Posts
    53
    Post Thanks / Like
    Mentioned
    0 Post(s)
    You need to put one on each speaker

    So buy two caps they should run you around 1.00 to 3.00 each.




  10. #10
    mrray13's Avatar
    mrray13 is offline uz some fegbags



    Join Date
    Dec 2001
    Location
    IL
    Posts
    3,633
    Post Thanks / Like
    Images
    16
    Mentioned
    0 Post(s)
    crutchfield.com and get two bass blockers. fairly cheap and they work well. not that plater is wrong, this is just more for us laymen who don't have electrical genius iq's..lol . a pair of 150 hz blockers are about $10U.S. (they are listed for 6" or bigger speakers but i don't think that matters much here). just another option.



    Quote Originally Posted by lilmaniac2
    Your circles look like something a HMO doctor would do to a **** job ....
    ^^^ speaking about cbfryman's jigsaw ability




    owner of Thread posts 11111 & 12345

    wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

  11. #11
    Join Date
    Jan 2002
    Location
    The XXX Lounge
    Age
    33
    Posts
    4,477
    Post Thanks / Like
    Mentioned
    0 Post(s)
    I'm gonna have to agree with mrray on this one. I have a pair of infinity 4's, so obviously the bass was a little to much for them. I ordered a pair of bass blockers from crutchfield and they sound so much better. I think I went with a cut-off of 900 hz. I believe they have 900,600, & 150. I think the 900 is for speakers up to 5 1/4, 600 for speakers up to 6 1/2, and 150 for 6x9's. It's very cheap and you should have no problem, very easy to install.




  12. #12
    Pepete's Avatar
    Pepete is offline Junior Member

    Threadstarter


    Join Date
    Feb 2002
    Location
    Canada
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)

    yeah! thanks

    Ok, I'll get 2 simple capacitors and install them to see how they perform, thanks alot everyone to have helped me.




Closed Thread

Similar Threads

  1. BAD Noise Problem - Baseball Bat??
    By Amokie in forum Wiring, Electrical and Installation Help
    Replies: 7
    Last Post: 08-18-2006, 05:47 PM
  2. bad alternator problem the whole time?
    By Twistid in forum General Discussion
    Replies: 2
    Last Post: 01-15-2006, 01:42 PM
  3. Please help, bad static problem!!
    By loudfivepoint0 in forum Wiring, Electrical and Installation Help
    Replies: 3
    Last Post: 03-04-2005, 08:19 AM
  4. Another bad Whining problem
    By danny_isr in forum General Discussion
    Replies: 3
    Last Post: 11-09-2004, 05:01 PM
  5. Help Trouble Shoot Distortion Problem!?
    By FAM4LIFE in forum Subwoofers
    Replies: 0
    Last Post: 02-20-2004, 08:55 AM

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum