40th Birthday present

Looking around here, I realize her money could have gone much further than the JL equip...but after 20yrs of marriage I know better lol
JL is a fine product. Good sounding, reliable, and strong resale value. MSRP is a little rough, but if she bought at an authorized retailer you get worry free warranty at least.

 
Right on, great info.I dig your no BS approach on this forum.

For as little as I have here, you reckon I need to go further than the big 3 with an alternator?
I always like to upgrade the - from battery to the frame. What's there from the factory is typically barely even adequate for your stock electronics IMO. For the ease of install and cost of a lug rings and a couple feet of 1/0 gauge copper it can't hurt.

Beyond that I don't think you have anything to gain from upgrading from the alternator over.

 
Port is 26" x 2 5/8 x 13.5 + a piece of half round on each end.U mean cut some of that 26 off?

Will keep that in mind, thx for your input.
yeh i meant port area a tad smallish but yeah higher tuning will be louder i didn't run #'s but i'm sure u be safe to cut 3" off probably tune to 34hz or so, i like 35hz, all these guys like super low tuning and if u have 2 15's and listen to rap it's great but i just have 1 12

and listen to some old rock even tuned at 35hz some songs don't make sub move at all lol..

 
Right on Boomingrandpa, I feel where you're coming from & thank you.

I was just going by the specs that came with the woofers. Although the one place I did deviate was in the net volume of the enclosure. JL wanted 1.75 & from some comments on here about JL listing smallish reqs I added .2 ft3 per sub. I don't know how wise that was but I figure it's easier to shrink a box so...

 
yeh i meant port area a tad smallish but yeah higher tuning will be louder i didn't run #'s but i'm sure u be safe to cut 3" off probably tune to 34hz or so, i like 35hz, all these guys like super low tuning and if u have 2 15's and listen to rap it's great but i just have 1 12and listen to some old rock even tuned at 35hz some songs don't make sub move at all lol..
Subs like the JL are a bit more traditional than modern high power drivers and you often do need to tune quite low to get a good flat response. It's much easier to build a sub that performs that way if you don't need huge power handling.

If it's not a huge motor stiff suspension sub I'd model it before recommending tuning, otherwise I find low 30's too low for most of the forum boner stuff.

Right on Boomingrandpa, I feel where you're coming from & thank you.I was just going by the specs that came with the woofers. Although the one place I did deviate was in the net volume of the enclosure. JL wanted 1.75 & from some comments on here about JL listing smallish reqs I added .2 ft3 per sub. I don't know how wise that was but I figure it's easier to shrink a box so...
Good call, most companies recommend on the small side.

 
Omegakan, will do first thing in the morning. All the wiring is there so it's just a matter of a couple connections & thx.

This is for me, my 40th tomarrow, she bought the stuff for me, but yes, I imagine she'll like to listen a little & would be happy to know that it sounds good.

Boomin_Tahoe, I did not use spacers but I think that's a fine idea & will look into it.

MrFoca, much appreciated, I hope so too.

Kinda like a Christmas eve feeling as I turn in tonight looking forward to the hard work paying off tomarrow.

U guys make this stuff just that much more fun...great hobby & good people!

 
Well, after setting the gains using proper procedures & equipment I can say that I'm happy with the results.

I have a few more days of playing with different eq parameters but my first impression is that it is tuned lower than any previous dual 12 JL setup I've had in the past. Around 30-32 hz. It plays the lows foe sure, and is a welcomed addition, but due to power constraints(both voltage drop & wattage of the subs, it doesn't play as loud as id like at the 40hz range with authority.

This may be something that grows on me & my musical tastes may change as a result, or... I could tune the enclosure a little higher to gain some volume as I understand it's a tradeoff.

I'm not dissatisfied, it's just different than I'm accustomed too. Neither bad or good, time will tell.

Thoughts.

 
Well, after setting the gains using proper procedures & equipment I can say that I'm happy with the results.I have a few more days of playing with different eq parameters but my first impression is that it is tuned lower than any previous dual 12 JL setup I've had in the past. Around 30-32 hz. It plays the lows foe sure, and is a welcomed addition, but due to power constraints(both voltage drop & wattage of the subs, it doesn't play as loud as id like at the 40hz range with authority.

This may be something that grows on me & my musical tastes may change as a result, or... I could tune the enclosure a little higher to gain some volume as I understand it's a tradeoff.

I'm not dissatisfied, it's just different than I'm accustomed too. Neither bad or good, time will tell.

Thoughts.
Sadly you sort of pigeon holed yourself with that box into not having any options for pointing sub/port in a different direction or moving it around the cabin. Often just repositioning the sub/box can make a more dramatic difference than small variations in volume or tuning.... that said, you could try to shrink the volume of the box a bit to test higher tuning... it would be about the easiest way.

Also you may have miscalculated port length or are getting some loading along a wall or other hard surface that's making it tune lower than you aimed for.

 
Sadly you sort of pigeon holed yourself with that box into not having any options for pointing sub/port in a different direction or moving it around the cabin. Often just repositioning the sub/box can make a more dramatic difference than small variations in volume or tuning.... that said, you could try to shrink the volume of the box a bit to test higher tuning... it would be about the easiest way.
Also you may have miscalculated port length or are getting some loading along a wall or other hard surface that's making it tune lower than you aimed for.
Hispls, do u know of someone who wouldn't mind running the numbers of this enclosure for me?

At least then I would have a solid foundation in which to make educated decisions in this regard.

 
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