I have a teknique 600 watt x2 bridged amp and a 12 inch solo barac L7 kicker sub (the square one) and it's not ported.. sometimes when the bass get's high, it almost sounds like it's being maxed out.. the sub is in a very very small box.. about a 1 foot by 1 foot cube.. I think my bass is being maxxed out because of the small size.. what do you guys recommend.. I port my sub? or should I just ditch the small ___ box and get a bigger box?

what I mean is that the low bass sounds really nice.. but when it gets to the higher bass, it's almost sounds like its not equalized correctly and its not being given enough space to sound correctly.. I think it has to do with the small box and it not being ported..what do you guys think?

 

if you go ported you will need a bigger box. if you try porting a box that is only 1 cu ft you'll have problems. i have a 1.5 cu ft ported box for my 10 and it should still be a little bigger. when you port a box you need to think about what frequency you want to tune the box to. the best is between 30-35hz's for a good mix of quality and volume. there is no possible way to tune a 1 foot box low enough(anywhere near 30-35hz's) to sound good and also be safe for the sub itself.

i think ported is the way to go though, you get so much more sound out of a ported box but the box has to be bigger. i have a single 10" alpine type-r(the old type-r not the newer one) with only 300 watts rms goin to it and i hit 124db's in my tc with just that. and it sounds good hitting those levels as well.

 

sealed boxes are better for the L7's I have heard them both an sealed is recommended, it really depends on the sub... also the solobarics require more volume than most subs because they are square, so you will want more than one foot...

 

sounds like you're at the small end of the spectrum when it comes to enclosures... the 12L7 requires .88 - 2.0 cu. ft. for a sealed box.. I'd try stuffing some polyfill into that box and see if that helps out, if it doesn't, You'll want to go to a bigger sealed box which will offer better low frequency extension but will lessen your power handling some (not like it'll hurt you since you only have 600 watts on it)...

also, do you have your low-pass crossover on the amp set correctly? it should be around 60-80Hz... another thing to look at is your method you used to set your gains. Did you just pick a spot and turn your gains there? They should be set in correspondence to the input voltage at the amp. Let me know and I'll help you work out some of your kinks..

 

what does bridged mean? im more of a home audio guy (simple rca/optical knowledge) so i dont really know what bridged means.. i assumed "bridged" meant that instead of it going 600 watts into 2 channels, its putting 1200 into 1.. if it is.. is that too many watts for a L7? or should I just get a smaller box?

If im going to open it to put the poly foam in, i might as well just get a bigger box to put it in.. i also have a 1.7farad cap too..

http://cgi.ebay.com/PERFORMANCE-TEKN...QQcmdZViewItem


I do believe ^^ is my amp.. i had Fry's Electronics install it with the most expensive monster cable they sold lol..and i wound up getting the cables/fuse for free.. anyways.. i dont mind getting a bigger box.. i have the next 4 days off so i can make a mission of it..

 

Do you know if you have a dual 2ohm sub or dual 4 ohm sub??

bridging is hooking 2 channels into one signal path. This doesn't always double the power, it depends on the impedence/resistance (ohms) of the voice coils of the subs and the method you use to wire them.

I would suggest getting a 1.5ft^3 enclosure for that subwoofer. Also, look at the adjustments on the amplifier and tell me what dials/switches you have and what those adjustments are set at. You might be able to improve something there.

 

http://www.hifisoundconnection.com/S...id/0/SFV/30046

not sure about the ohms.. thats the sub i have tho.. i can get a bigger box.. i can just go make one today..

 

i built a box for one 10L5 ported and it was 2.25cft. if you go ported for a 12L7 the box will have to be huge. you only get around a 3 db increase if you go ported. All you really need to do is get a bigger box, it will be like night and day if you get a sealed box that is built for that sub air space.

 

alright.. ima build a bigger box this weekend.. the one reason i went so small was because i wanted to have at least some space in the back of my car for 20 packs of beer or other things...

 

I think im going to get this box..

http://www.supercrewsound.com/shop/detail/11/363.htm

 

not trying to thread jack.. but trying to get a question answered without starting a new thread... cuz it's on topic....

any suggestions for a jl w6v2?

 

I'd not do that without knowing the specific tuning for the enclosure. If it's tuned too high (SPL), it's gonna sound like poo. Generally, a good tuning for a vented enclosure that'll keep it sounding good is around 30Hz. anything over about 35-37Hz tuning is going to lose SQ but probably gain overall SPL... once you get over 40Hz tuning, it's pretty much gonna sound like crap...

 

DOH!!! from reading the specs on your amp and sub your amp is only gonna be putting out about 350 watts (+-).... I would go with a sealed box then.....

 

wait, only 350 watts? hows that possible? it's a 1200 watt sub..

how can I tell how many watts it's actually putting out?

 

the watt rating of the sub is only what it is capable of handling. Depending on the OHM load that the sub is (dual 2 or dual 4) you can have different wattages being pushed by the amp into the sub. If you have a dual 2ohm sub, you can wire it in parallel to a 4ohm mono load and hook it to the amp to get about 480watts... if it's a dual 4ohm sub, then you'll have to run the amp at 4ohm stereo which will only give you 170per coil (= 340 to the sub)...

the impedance(ohm) of the sub is very important as it determines if an amp will work with that sub and how well an amp will work with that sub...