Closed Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 19

Reload Thread: jl w6v2 high output box no good or setup wrong?

  1. #1
    hello12's Avatar
    hello12 is offline Junior Member



    Join Date
    Aug 2011
    Location
    Pacific Ocean
    Posts
    2
    Post Thanks / Like
    Mentioned
    0 Post(s)

    jl w6v2 high output box no good or setup wrong?

    Hi, I have a question regarding my setup or my jl 12" w6v2 high output box. I'm not the most knowledgeable about car audio but i know jl subwoofers are supposed to sound very nice (heard them before). I feel like my subwoofer is lacking sound quality or is supposed to sound better.

    My current setup is in a 01-05 honda civic, 75 amp stock alternator, no big 3, yellow optima battery
    Alpine 9884 HeadUnit
    Kicker KS60 6 1/2" front speakers
    Kenwood 6x9 rear speakers (forgot the model name)
    Alpine M1000 Mono Amp
    12" JL W6v2 High Output Box

    I've been told by a car audio expert/technician who sets up cars for car audio competitions that I should upgrade my car stereo because its preamp voltage is 2 volts. He also mentioned that my W6v2 High Output Box is draining the power from the subwoofer, and that I should get a custom made box, saying that the high output box was too big. I should also mention that I took out the trunk floor because the high output box was too big to fit in my car, so there is no flat surface but the sub is sitting flat and pointing straight towards the rear.

    I think I'd agree with getting more preamp voltage for a stereo, and possibly having a trunk floor for a flat surface, but I'm a little confused about the JL W6v2 High Output Box. Shouldn't the High Output Box sound very good? I just want to verify what is wrong with my setup and if I should upgrade the box. Thank you for any help.







  2. #2
    NoLoud4U's Avatar
    NoLoud4U is offline High Output SQ



    Join Date
    Apr 2011
    Location
    Va Beach, Va
    Age
    34
    Posts
    7,940
    Post Thanks / Like
    Mentioned
    51 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    2v preouts are fine. Take out the 6 x 9s and make sure the settings on the amp and HU are correct. You can cut a sheet of MDF to level out the floor but its only cosmetic.



    2014 Ford Fusion
    All stock everything.

  3. #3
    audioholic's Avatar
    audioholic is offline Moderator



    Join Date
    Aug 2003
    Location
    Parts Unknown
    Posts
    23,586
    Post Thanks / Like
    Mentioned
    37 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Quote Originally Posted by hello12 View Post
    Hi, I have a question regarding my setup or my jl 12" w6v2 high output box. I'm not the most knowledgeable about car audio but i know jl subwoofers are supposed to sound very nice (heard them before). I feel like my subwoofer is lacking sound quality or is supposed to sound better.

    My current setup is in a 01-05 honda civic, 75 amp stock alternator, no big 3, yellow optima battery
    Alpine 9884 HeadUnit
    Kicker KS60 6 1/2" front speakers
    Kenwood 6x9 rear speakers (forgot the model name)
    Alpine M1000 Mono Amp
    12" JL W6v2 High Output Box

    I've been told by a car audio expert/technician who sets up cars for car audio competitions that I should upgrade my car stereo because its preamp voltage is 2 volts. He also mentioned that my W6v2 High Output Box is draining the power from the subwoofer, and that I should get a custom made box, saying that the high output box was too big. I should also mention that I took out the trunk floor because the high output box was too big to fit in my car, so there is no flat surface but the sub is sitting flat and pointing straight towards the rear.

    I think I'd agree with getting more preamp voltage for a stereo, and possibly having a trunk floor for a flat surface, but I'm a little confused about the JL W6v2 High Output Box. Shouldn't the High Output Box sound very good? I just want to verify what is wrong with my setup and if I should upgrade the box. Thank you for any help.
    Let me guess, he has just the deck to sell you, and custom box too.

    Like said above, 2volt preamps is fine. Higher voltage pre outs simply help reduce the noise threshold in the system. So unless you are experiencing a buzzing or whining sound, it wont help to increase your signal voltage. And even if you do have noise that is audible with that 2volt signal, the problem is bad enough that it should be addressed directly, not attempted to cover over with a higher signal voltage. If that car audio expert is really an expert, he knows this, and is just trying to make a buck off you. If he doesn't know that, he isnt an expert.

    Your amplifier's gains are adjusted to compensate for signal voltage. Increasing signal voltage simply means you would be required to lower your gain adjustment. This is why gains are commonly referred to as 'sensitivity adjusters'. So knowing this, you can understand that a higher signal voltage wont make your system any louder, at all.



    No speaker, in the history of speakers, has ever been blown by too little power. Ever. I don't care what your friend told you, he's a dirty liar.


  4. #4
    kushy_dreams's Avatar
    kushy_dreams is offline The resident hippie



    Join Date
    Sep 2009
    Location
    twenty past four
    Posts
    4,091
    Post Thanks / Like
    Mentioned
    25 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Do a big 3 upgrade and add get an alternator or at least a 2nd battery....in that order. Those little jap econoboxes have super weak alternators/electrical systems....not good for high powered stereos.



    13 Dodge Dart Rallye 1.4T


    http://mobileaudioforum.com/forum/forum.php<

    BOYCOTT SKAR AUDIO! SHADY BUSINESS PRACTICES SHOULD NEVER BE ENCOURAGED!

  5. #5
    WheresTheButta's Avatar
    WheresTheButta is offline CarAudio.com Elite



    Join Date
    Mar 2005
    Location
    Cranford, NJ
    Age
    31
    Posts
    559
    Post Thanks / Like
    Mentioned
    19 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Quote Originally Posted by kushy_dreams View Post
    Do a big 3 upgrade and add get an alternator or at least a 2nd battery....in that order. Those little jap econoboxes have super weak alternators/electrical systems....not good for high powered stereos.
    I agree with this approach. You don't have sufficient electrical support for your amplifier, and that's what is holding you back. Upgrade your electrical and then go from there.

    I'd also like to agree with Audioholic - it sounds like the guy who is giving you advice is trying to sell you something you don't need.



    I haven't found the perfect stereo yet, but I'll keep searching!
    I have lots of references, but not on this site - contact me to ask about them.

  6. #6
    Bettr n' Revrse's Avatar
    Bettr n' Revrse is offline I do what I want



    Join Date
    Dec 2010
    Location
    Grand Junction, CO
    Posts
    16,839
    Post Thanks / Like
    Mentioned
    72 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Quote Originally Posted by kushy_dreams View Post
    Do a big 3 upgrade and add get an alternator or at least a 2nd battery....in that order. Those little jap econoboxes have super weak alternators/electrical systems....not good for high powered stereos.
    Its a W6 on an Alpine 1000 he is just fine for voltage Im sure lol...




    Western Rep.

    99 Honda CRV: (Always Changing) ___________ 79 F-150: Show Truck ________________
    -Head Unit: Eclipse CD7100________________ -Head Unit: Eclipse CD7100
    -Sub Stage: Sundown SD-2 8's sealed________ -Sub Stage: Looking
    -Mids/Highs: Deciding_____________________ -Mids/Highs: Scan Speak & Blaupunkt
    -Sub Amp: MMATS Hifi 6 channel____________ -Sub Amp: American Warrior Set (Zed Built)
    -Mid Amp: ^^^ 5/6 bridged at 1 ohm_________ -Mid Amp: ^^^

  7. #7
    dipitydoo's Avatar
    dipitydoo is offline CarAudio.com Elite



    Join Date
    Apr 2006
    Location
    St. Louis, MO
    Posts
    561
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    as previously mentioned, unless you are hearing noise with zero volume, your 2v hu is okay. the box should be fine as well, assuming that the sub was made specifically for that enclosure, jl does a pretty good job of building a properly tuned enclosure for their subs. i doubt most shops could make a signficantly better sounding overall box for your sub. sounds like the shops trying to see you some things. not sure what sound issues you are exactly experiencing, but you might have trunk metal rattling that may be degrading your sound. you could try putting the trunk carpet back in, or putting some sound deadening material in the trunk, or repositioning the sub box also, just to get you started.




  8. #8
    WheresTheButta's Avatar
    WheresTheButta is offline CarAudio.com Elite



    Join Date
    Mar 2005
    Location
    Cranford, NJ
    Age
    31
    Posts
    559
    Post Thanks / Like
    Mentioned
    19 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Quote Originally Posted by Bettr n' Revrse View Post
    Its a W6 on an Alpine 1000 he is just fine for voltage Im sure lol...
    he has a 75 amp alternator. If his 1000 watt amplifier was 100% efficient, it would draw 83 amps. That's above the capabilities of his tiny alternator, which is already expending much of its output to power the vehicle's systems and charge the battery.

    His amplifier is not 100% efficient, so at full tilt he will draw more than 83 amps. His electrical is less than what's required for that setup.

    Further, small gauge wire has more resistance and further hampers power delivery. Upgrading his wire will reduce the resistance and allow his electrical system to be more efficient. At the very least he should upgrade his wire and get another battery, but I'd recommend a better alternator too. This way when he inevitably upgrades in the future, he'll have enough juice to support it.



    I haven't found the perfect stereo yet, but I'll keep searching!
    I have lots of references, but not on this site - contact me to ask about them.

  9. #9
    audioholic's Avatar
    audioholic is offline Moderator



    Join Date
    Aug 2003
    Location
    Parts Unknown
    Posts
    23,586
    Post Thanks / Like
    Mentioned
    37 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Most amplifiers are around 80% efficient at full tilt. Both class A/B and class D (contrary to popular belief). So simply multiplying estimated current draw by 1.2 should give you a rough idea what the amp is capable of drawing from your charging system. Obviously this is a generic equation, and not amplifiers hold true to this, but its a pretty good rule of thumb.



    No speaker, in the history of speakers, has ever been blown by too little power. Ever. I don't care what your friend told you, he's a dirty liar.


  10. #10
    dipitydoo's Avatar
    dipitydoo is offline CarAudio.com Elite



    Join Date
    Apr 2006
    Location
    St. Louis, MO
    Posts
    561
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    from what i've seen, class d amps are in the 70's to 90's percent at full power, class a/b's are around 60's to 70's at full tilt, both dependent on load presented to the amp. where the real advantage comes in with class d amps is at lower power levels (which is typical when you play music and not test tones). at these levels, say 1/3 to 1/2, the drop in efficiency is much more significant in class a/b amps, anywhere in the 20's to 40's, whereas class d amps maintain their efficiency much better.

    this being said, i don't think that's the issue with the op's sq problem.




  11. #11
    audioholic's Avatar
    audioholic is offline Moderator



    Join Date
    Aug 2003
    Location
    Parts Unknown
    Posts
    23,586
    Post Thanks / Like
    Mentioned
    37 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Yes, class D amplifiers have their big efficiency advantage at low to moderate power levels. Once higher to maximum output levels are reached, their efficiency levels are similar to a class A/B.



    No speaker, in the history of speakers, has ever been blown by too little power. Ever. I don't care what your friend told you, he's a dirty liar.


  12. #12
    surreal's Avatar
    surreal is offline On my katy perry sht



    Join Date
    Jan 2010
    Location
    OK
    Posts
    615
    Post Thanks / Like
    Mentioned
    3 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Totally agreed with audioholic. Just to add in info, load on the amp will change it as well.



    I do stuff

  13. #13
    hello12's Avatar
    hello12 is offline Junior Member

    Threadstarter


    Join Date
    Aug 2011
    Location
    Pacific Ocean
    Posts
    2
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    Thank you for all the help, i actually saw the first two posts then my internet cut out. I actually ended up fixing the problem. I experimented around and found out that on the headunits sub level should be at 9 out of 15 instead of 15 out of 15 which i have used on all the other subs i have used. Everything sounds real amazing now whereas the 15 out of 15 didnt have the jl sound quality. Thanks for all the help, it really helped me narrow down that there was no problem with my system and allowed me to find a solution.




  14. #14
    Bettr n' Revrse's Avatar
    Bettr n' Revrse is offline I do what I want



    Join Date
    Dec 2010
    Location
    Grand Junction, CO
    Posts
    16,839
    Post Thanks / Like
    Mentioned
    72 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    You really think he is putting 1000 watts to a w6? No he isn't so his electrical is probably fine... I'm running a big belle at 1 ohm in my Honda




    Western Rep.

    99 Honda CRV: (Always Changing) ___________ 79 F-150: Show Truck ________________
    -Head Unit: Eclipse CD7100________________ -Head Unit: Eclipse CD7100
    -Sub Stage: Sundown SD-2 8's sealed________ -Sub Stage: Looking
    -Mids/Highs: Deciding_____________________ -Mids/Highs: Scan Speak & Blaupunkt
    -Sub Amp: MMATS Hifi 6 channel____________ -Sub Amp: American Warrior Set (Zed Built)
    -Mid Amp: ^^^ 5/6 bridged at 1 ohm_________ -Mid Amp: ^^^

  15. #15
    akheathen's Avatar
    akheathen is offline trianoacitol contraceptiv akheathen is a Supporting Member of the forum!



    Join Date
    Jan 2011
    Location
    Anchorage AK
    Age
    33
    Posts
    2,255
    Post Thanks / Like
    Mentioned
    22 Post(s)

    Re: jl w6v2 high output box no good or setup wrong?

    lol, remember that "sound quality issue" sound...... whenever you hear it, you are clipping/distorting, and that is the #1 cause of failure. avoid it like herpies. as for the class a/b, well, i can tell you at full tilt and the proper ohm load, they are almost the same, even the ones advertizing low efficiency, becuase there is a point in an a/b that the power supply is used by the rails, and that rail sag is not that bad. for instance, kicker zr series amps would be far over 80% efficient at 2.66v, because it will pass pretty much full current, yet not have substantial rail sag (output voltage drop, basically) yes, class d does have an efficient way of pulsing the putput at high frequenciy, thus keeping a higher charged output from a source voltage, but, really, it is only 5-15%max gain in efficiency over class a/b. also, remember many class a/b amps were rated conservative, as to keep the numbers low so you could push it to higher effeciency, and thus much more than rated power. honestly, 90% of the feeficiency comes strait out of how well the power supply is built, and has nothing to do with what class output it is.... and many factors i do not care to go into.
    back to topic-
    that being said, your high output box is genaric, really, not to say it may not be good, but i havve a feeling it is tuned a bit high, and if you had to pull your spare tire to fit it, you may be loosing out some by dropping it at the back of the trunk. a well built box, probably designed by someone on this site as a supporting vendor, could get you some better sound and output, but 'eh...... as for your power source.... yes, i have seen many hondas, and other imporyd, and they are not liberal on the main power cables.... just enough to support some stock low current bullshit. i would upgrade to at least a 4awg big 3 and make sure your grounding system is up to par. likely, it is good enough for a 40-60a load, if that.



    *IF I have forgotten to exchange feedback, please let me know*
    i buy broken amps....
    No, i will not "gift" paypal. please do not even make it awkward by asking. if the fees are an issue, I am usually inclined to add them. unless you have discount elsewhere, shipping is through usps flat rate, through usps parcel post, or through the roof..... i am in alaska. thanks
    -Heath H-

Closed Thread
Page 1 of 2 1 2 LastLast

Posting Permissions

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