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Old 03-01-2005, 05:47 PM   #1
ty420
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Default 10w6 in ported box with JL 250/1 amp

hey everybody I bought a 10w6v2 and had the custom ported box built to spec from the official web site it is a slot box. I am running a 250/1 on it. my question is , Is this not enough power, could it be hurting my sub, When i crank it up it makes a kind of pop noise or something (hard to explain noise).
is that what a 10w6 sounds like when it reaches peak power theres no way my 250/1 is maxing it out WHAT IS THAT NOISE AHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!
My brother went to OIART and said it could be port snort and said you should run more watts than the sub can handle and turn the amp down, not enough power could be damaging to the sub.
I just what it to work!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(gain is at +8)
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Last edited by ty420; 03-01-2005 at 05:53 PM.
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Old 03-01-2005, 05:53 PM   #2
djoye
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An older model 10W6 or a 10W6v2? I think you need AT LEAST 400 watts RMS to satisfactorily push that thing. I had 600 watts RMS on a 12W6v2 and it sounded great. 250 is really not enough.

Oh yeah, and not enough power can hurt the sub. The amp won't be able to crank out enough power to move the sub so the power just turns to junk noise when you turn it up and of course junk noise isn't good for sub woofers, heh.
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Old 03-01-2005, 05:55 PM   #3
ty420
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10 w6 the new one
is the 250/1 the reason for the noise? if not, what is it?
what do you mean junk noise like a pop noise or garbly bass
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Old 03-01-2005, 05:57 PM   #4
djoye
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I'd assume that the 250/1 is the problem. If the box is built to spec then there shouldn't be any noise from it. Make sure your + and - leads are connected right. If that doesn't solve anything then get a bigger amp.
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Old 03-01-2005, 05:57 PM   #5
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Old 03-01-2005, 06:00 PM   #6
djoye
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Quote:
Originally Posted by weitek
I wonder if quoting you raises my post count?

http://www.jlaudio.com/subwoofers/10w6v2.html

400 watts continuour power handling... I'd find a good 600 watt RMS amp. My single 12W6v2 got plenty loud on 600 watts. You could go with the JL 500/1, that should do the job for a single 10W6v2.
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Old 03-01-2005, 06:03 PM   #7
ty420
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Quote:
Originally Posted by weitek

cross posting is bad mmkay?
someone told me I was in the wrong forum


djoye - they put the sub in the box for me maybe they put the + and - crossed inside the box is it ok to check by switching them and pumping it up or would that be bad
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Old 03-01-2005, 06:09 PM   #8
djoye
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Quote:
Originally Posted by ty420
djoye - they put the sub in the box for me maybe they put the + and - crossed inside the box is it ok to check by switching them and pumping it up or would that be bad
Probably not a good idea, heh. I'd pull the sub from the box and look at the connections but if you don't feel like doing that then I'd switch the + and - on the outside and play it at low volume and then slowly raise the volume. May wanna listen closely to see if it sounds ok before you crank it. Be careful with it.

A good place for car audio info is http://www.caraudioforum.com but that forum seems to have something like a 150 user limit before it overload and craps out.
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Old 03-01-2005, 06:27 PM   #9
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per JL audio the 10w6v2 should opperate just fine on the 250/1. But since optimum is around 400, it would be better to run more. I wouldn't go any bigger than the 500/1. sounds like when it starts cranking your not getting enough juice.

With the gain up that high it sounds like you like to crank it. I'd pick up a 500/1 or getting something like RF X5.C or phoenix gold OCTANE-R 4.0:2 or xenon 400.1.



I run a 10w7 off the 500/1. no issues.

Last edited by OneManArmy; 03-01-2005 at 06:33 PM.
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Old 03-01-2005, 06:32 PM   #10
V6TurboTA
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My honest advice to you is for you to ask a pro to explain to you what distortion is. Go to any higher end audio retailer and just ask them everything you can think of... including what is distortion, what does it sound like, etc...

It will save you money in the long run.

~v6
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Old 03-01-2005, 08:08 PM   #11
ty420
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Thanks everyone< I am just frustrated with the service at my high end audio shop iv'e been in and out too many times. Thats why I just wanted to hear what everyone else had to say before they tell me how it is. They said my 250/1 was fine, maybe they just want me to come back for more. I agree with one man army that it just wants more juice. The poping noise is probably the sub grabing for more than the amp can give it (is that what cliping your amp is). thanks again. Ty
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Old 03-01-2005, 08:58 PM   #12
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You do not need to be pushing big power from a big amp to be getting a clipped, distorted signal that makes "popping" noises.
You can be clipping your HU signal or you can have your amp's gains too high.

Check the subsonic filter on your amp!
Make sure it is set correctly.
For some reason JL doesn't list the tuning frequency for the slot loaded box. Find out what it is and set subsonic accordingly.

If your shop installed all of this then yes you should be upset. All of your gains and subsonic should be set correctly. If not they did not do their job.
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Old 03-01-2005, 09:12 PM   #13
ty420
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-the filter freq. (hz) is set just below 65
it also has a selectable slope switch off/12db/24db (per octave) which is curently set in the off position
-no they didn't do their job
-yes i am upset, this is an expensive ongoing process

Last edited by ty420; 03-01-2005 at 09:20 PM.
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Old 03-01-2005, 10:52 PM   #14
pieces
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65 Hz for subsonic?
I think this may be the low pass you are looking at?
Your subsonic should be around 25-40 Hz depending on the tuning frequency of the box.

Usually there is no slope for subsonic filter... as you are specifically cutting the frequencies the box can't play.

Also, I forgot to say this before. Before you think about getting a new amp get the thing playing without clipping. Then, if it is not loud enough for you think about a new setup.

Good luck and be carefull it is really easy to smoke the voice coil on an improperly set up ported enclosure.
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Old 03-02-2005, 08:17 AM   #15
eubanks
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Just wanted to clear up a myth that was stated above. Too little power doesn't hurt a speaker.

Clipping, however, can. Theoretically people with a small amp might turn the gains up so high (searching for more output) that the amp ends up clipping, but the result has nothing to do with underpowering the speaker. Underpowering the speaker simply results in lower output.

That said, it is hard to say what is going on with your situation. As suggested I would check the subsonic filter on the amp, after you figure out the tuning frequency of the box. Aside from that, you could be clipping either the deck or the amp.

Good luck

PS - I'd be highly surprised if you don't get good output from that sub with only 250W. Vented boxes require less power than sealed boxes for a given driver, for a given amount of output.
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Old 03-02-2005, 09:57 AM   #16
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to resume everything;

too little power do not hurt. the problem is that with too little power, your sub don't get satisfactory loud without getting distortion and clipping from the amp. Clipping, however, is bad. if it don't hurt on a short term, it will at a long term.

250w rms on a 10W6v2 is maybe enough for the average music listener, but even ported, it won't flex a windshield or something like that. the 10W6v2 is rated at 400w rms. JL state that you can use as much as 800w rms on it if you know what you're doing. It can definately handle the power of a 500/1. or any other similary-powered amp that cost half of it price.
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Old 03-02-2005, 08:30 PM   #17
ty420
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-I still can't find the subsonic filter
-Here is the web site with a PDF of the jl 250/1
jlaudio.*com/amps/pdfs/250_1.pdf (minus the *)
amp is set as follows
output mode -full range
mode/slope -off
intrasonic filter -30 Hz.
input voltage -low
filter freq. -75-80
LF bost (Db) -+8+9

- still have no idea how it could posibly be making that pop noise theres no way im overpowering it
-still haven't tried to switch the leads
-yes it is lots of power but i feel im breaking it because i play it right to the point before that noise hapens. At a volume where my old pheonix gold 10" titanium in tuned ported box was fine at?
-weird eh?
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