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Old 01-08-2009, 12:21 AM   #1
Brain Sturgeon Brain Sturgeon is offline
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Default The Official JL Audio Subwoofer Owners Thread

Please discuss your JL Audio subwoofers in this thread. You can include pictures, reviews, or any other comments regarding your subwoofer.

Manufacturer’s Website: http://home.jlaudio.com/products_sub....php?page_id=7

A tour of the JL Audio factory
http://forum.blu-ray.com/showthread.php?t=79916


Brain Sturgeon's New JL Audio Subwoofer:

So, in the never ending quest for Home Theater and audio Nirvana, I decided it was time for a sub upgrade.

I previously had a Velodyne DD-18 that I used as an LFE sub, and a B&W 800 ASW that I was using as a mono sub. I was running my mains (802D) full range, and they can effectively get to 35 Hz or so. This worked okay, although the older B&W sub was very much the weak link in the system.

I thought about getting another DD-18 as I really like the built in EQ in the sub. However, the price/performance ratio of this sub has deteriorated since its debut. It's still a great sub, but there are definitely better for the price.

I started looking at the top commercial subs out there (I just don't have the time to do a DIY sub), and these include the Danley DTS-20, eD A7-900, Epik Conquest, Seaton SUBmersives, SVS PB13-ultra, Genelec HTS6, Velodyne DD-1812, and the JL Audio Gotham, among others.

The Danley's form factor wouldn't work in my room as it is, and it doesn't do well in the aesthetics department (basically a long, black box). The big eD, Epik, and Seaton are a little better looking, but not by much-- basically large ported boxes. The SVS is a pretty sub, but a step below these others in performance. I've never heard the Genelec and don't know any dealers in my area. The Velodyne is a bit bigger than I would like, and the price/performance is not great as it is hideously expensive. Which leaves me with the JL, which I had on my radar anyway as I was wow'ed by Gothams in the past.

So, here she is at my front door today:



Just an absolute beast of a box-- every bit of 400#. It took four of us to wrestle this down to my theater while avoiding getting crushed by the thing...



Moving into position:



Almost there:



Final set up:




I'm going to run left and right subs through the Lexicon MC-12 and not run an LFE sub (LFE will just be rolled into the usual sub output). I'm going to run the 802's small (not full range) and cross them over @ 40 Hz, and use the THX 80 Hz crossover for the subs. I did the basic automatic setup and Room EQ through the Lex, and have got a lot more EQ'ing to do with the DD-18 and Gotham. It will be interesting to see if I can get these subs to play nice.

Early impressions in my system: The output of the Gotham is absolutely ungodly. It just smokes the DD-18, which is not a slouch in any way. This poses the problem of having to turn down the output of the Gotham, which I am doing with the Lex. Even so, I may have to reduce the gain of the Gotham manually on the sub itself to get it just right.

In very limited listening, the bass is incredibly powerful, palpable, and crisp, although I need to work on matching them with the 802D's a bit better as it feels a little too forward right now. Adjusting the EQ and crossover points will probably be in order. I had thought about going with two Gothams, but I'm glad I started with one as it is getting close to overwhelming the room at this point. I'll see how it is once I get the subs a little better dialed in-- I may or may not like how it matches with the Velodyne.

Anyways, fun stuff...

Last edited by Big Daddy; 01-22-2009 at 12:01 AM.
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Old 01-08-2009, 12:24 AM   #2
JasonR JasonR is offline
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Holy crap Brain!!! That is AWESOME!!!!!!!!!

We need a grill off shot!
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Old 01-08-2009, 12:37 AM   #3
crazyBLUE crazyBLUE is offline
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SPEECHLESS !!!

I CAN"T WAIT TO HEAR YOU"RE REVIEW BRAIN !!!!
Brent

Changing to 4K ~ Got the 60" TV & enjoying the 4K Blu-rays.
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Old 01-08-2009, 12:43 AM   #4
Big Daddy Big Daddy is offline
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You may have to adjust the placement of the subs. I am sure you are aware that room positioning is as important as the quality of the subs. I realize that it may ruin the aesthetics of your HT room, but try it and see what you will get. Start with the middle of the side walls or one in the front and one in the back.

Get 4 of those Gothams and I will move in to your house.
HT Room: Panasonic PT-AE8000, Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Yamaha-RX-A3010 Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83, Sony BDP-S790, Audio Technica Tuntable, Mitsubishi S-VHS, 2 Def. Tech. Super Towers w 15" subs, 1 Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Cadence Presence, 2 Bose 901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, Velodyne SMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 Power Conditioners.
Two-Channel Room: XiangSheng Tube Preamp., Carver TFM-45 Amp. (375 W/Ch), Behringer EPX4000 Amp., Onkyo CD player, Denon Turntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 Super Tweeters, 2 DIY Folded Horn Super Towers with 15" Sub., 1 Modified AA HD-SUB12
Family Room: Mitsubishi 73" Diamond Series TV, Yamaha DSP-A3090 Rec., DirecTV HD-DVR, PS3, Zvox Speaker, 1 DIY 12" Sub.
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Old 01-08-2009, 01:06 AM   #5
Slec Slec is offline
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Absolutely crazy, in an amazingly good way. The DD18 is a beast so I can't imagine what that Gotham is like.
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Old 01-08-2009, 01:31 AM   #6
aramis109 aramis109 is offline
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Man, when I saw your name and then the list, I was like, "please tell me he got the Gotham," and then I scrolled down and saw the pic. What a beauty. I'm even more jealous if that was possible. Take some more pics!

Panasonic TC-P50G10 1080p Plasma | Onkyo 805 | PS3 Slim | Xbox360 | Wii | APC H10 | Harmony One
Def Tech BP6B Fronts | Def Tech CLR 2002 Center| Def Tech BP2X Surrounds | PA-120 Subwoofer
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Old 01-08-2009, 01:34 AM   #7
prerich prerich is offline
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Infinity Comp Prelude P-FR, Infinity Comp Overture 1 - center & front hght and sides, Infinity fps-1000 rear and rear hght, Infinity Outrigger Jr. overheads, 2 AE AV15 Power Cube subwoofers, SVS 16-46 CS (X2) 2 DCM Subs (rear), Denon AVR-X4300H (front hght and Prepro), Yamaha MX-830 (rear hght), B&K 200.7 Reference Amp, Behringer NU4-6000 (subs),miniDSP 2X4, BD HTPC, Tube DAC, NAS 20tb , 16:9 110", Vivitek hk2288 4k proj, TCL Roku 4K TV.
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Old 01-08-2009, 03:24 AM   #8
SDBlu SDBlu is offline
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Brain Sturgeon is my HERO!
Sony 52XBR4
Sony PS4
Pioneer Elite VSX-44
Polk Audio Monitor 70 S-2
Polk Audio CS2
Axiom QS-8 Surrounds
APC H15//Blue Lynk Remote
ED A2-300 Sub
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Old 01-08-2009, 03:26 AM   #9
Brain Sturgeon Brain Sturgeon is offline
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Quote:
Originally Posted by JasonR View Post
Holy crap Brain!!! That is AWESOME!!!!!!!!!

We need a grill off shot!
Quote:
Originally Posted by aramis109 View Post
Man, when I saw your name and then the list, I was like, "please tell me he got the Gotham," and then I scrolled down and saw the pic. What a beauty. I'm even more jealous if that was possible. Take some more pics!
Here ya go...





The fit and finish are spectacular. Truly a work of art.

Quote:
Originally Posted by Big Daddy View Post
You may have to adjust the placement of the subs. I am sure you are aware that room positioning is as important as the quality of the subs. I realize that it may ruin the aesthetics of your HT room, but try it and see what you will get. Start with the middle of the side walls or one in the front and one in the back.

Get 4 of those Gothams and I will move in to your house.
Yup, I would love to do the subwoofer crawl sometime, but moving the Gotham around is an enormous PITA. Unfortunately, the room is a bit peculiar for acoustics in that there is no right wall (it opens into an atrium at the bottom of the stairwell) and the back wall is another 30' back from the back row. The room is about 17'x55'x8' with about 25' of length used for the theater room. I wish it were a purpose built room for audio, but that's my next theater...

I can't really place a sub on the left wall as the hearth is located there; so that leaves me with either their current positions, a position in front of and lateral to the mains, or a position behind the back row. I'm going to do a lot of tweaking with setting levels, EQ, and Extreme Low Freq trim in their current positions to see if I can get everything blended together. If I get frustrated, I will start rearranging things.

Four Gothams-- sheesh! After hearing the output of one in my room, I would fear for the rest of the home with quad Gothams...

I've got a copy of War of the Worlds coming in the mail tomorrow. We'll see how the "Lightning Strikes" and "Pods Emerge" scenes sound. I've also got the opening scene of Master and Commander on my list of scenes to hear...
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Old 01-08-2009, 03:29 AM   #10
JasonR JasonR is offline
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Thing of beauty! JL really knows how to do subs!
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Old 01-08-2009, 04:33 AM   #11
aramis109 aramis109 is offline
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Gawd, that pic is possibly illegal in 10 states due to their laws on pornography....


Seriously, congrats on your purchase. The ultimate in home theater gets the ultimate in subwoofers.

Panasonic TC-P50G10 1080p Plasma | Onkyo 805 | PS3 Slim | Xbox360 | Wii | APC H10 | Harmony One
Def Tech BP6B Fronts | Def Tech CLR 2002 Center| Def Tech BP2X Surrounds | PA-120 Subwoofer
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Old 01-08-2009, 04:42 AM   #12
jhoffs_cb7 jhoffs_cb7 is offline
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i bet that motherfer pounds so fing hard
god...i could only dream

what do you do for a living?
MITSU WD-60C8
CHEAP RCA SURROUND SOUND
1080p UPCONVERT

NEXT:BLU RAY PLAYER
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Old 01-08-2009, 11:39 AM   #13
MacDaddyOJack MacDaddyOJack is offline
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Brain, you just upgraded from a DD-18!!!

And you said it was a "little" upgrade

As if I didn't want to come see a movie in your theater before, now I really do....great setup and great pics!

Sony KDL-46V3000 1080p LCD
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SVS 20-39 PC+ Subwoofer

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Old 01-08-2009, 01:19 PM   #14
111111 111111 is offline
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Said it before and I'll say it again...My favorite HT period!

Brain,

Nice purchase mang! You need to invite all of us over for a demo someday.

Ray
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Old 01-08-2009, 06:05 PM   #15
Opips2 Opips2 is offline
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it's beautiful black gloss panio new the sub. I love your amazing the pictures!
It's beautiful in room lexury home theatre!

thanks review.
Hitachi 50" LCD HDTV |Harman Kardon AVR-254 |Oppo BDP-83|
PlayStation 3 60gb |Outlaw Audio Amplifier #7125 |eD subwoofer A5-350 |Axiom Audio Front speaker M80 v2 |PSB Image Surround S50 |Axiom Audio VP150 v2 Center speaker
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Old 01-08-2009, 06:11 PM   #16
BACsader BACsader is offline
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God I love the look of that sub. I bet is sounds even better. Do you think i could put one of those in my car? JK. Nice purchase. One day, I might be able to have a setup NEARLY as decent as yours.
Panasonic Plasma 1080p (TH-42FD18)Costco
Sony PS3/Panasonic DMP-BD60
Pioneer Elite VSX-03TXH
Acurus A100x3 Amplifier
Focal 706S Fronts/ Focal 700S Centre
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Old 01-08-2009, 06:19 PM   #17
Mr. HiDef Mr. HiDef is offline
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Nice upgrade Brain that is a thing of beauty
"Death smiles at us all. All a man can do is smile back."
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Old 01-08-2009, 06:25 PM   #18
Marine Mike Marine Mike is offline
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You have my dream home theatre, just an FYI!
"The word fan is an obsolete word to me. It means two thing: fantastic or fanatic. Or something that hangs on a ceiling or sits on a table and blows wind in your face." - Gary Busey
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Old 01-08-2009, 06:44 PM   #19
Footloose301 Footloose301 is offline
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No no no! That was supposed to be shipped here!

Fine. You win. I'll trade you my MFW-15 for the Gotham.
HOME THEATER IN THE MAKING
TV: Sony XBR75X900E
RECEIVER: Denon AVR-X6400H
PROTECTION: Panamax M5400-PM
SUBWOOFER: SVS PB16 Ultra
FRONT SPEAKERS: Klipsch RP-450C and R-28Fs
REAR SPEAKERS: Polk Audio T90e in the rear
BLU-RAY PLAYER: Xbox One X
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Old 01-08-2009, 07:03 PM   #20
aramis109 aramis109 is offline
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Quote:
Originally Posted by Footloose301 View Post
No no no! That was supposed to be shipped here!

Fine. You win. I'll trade you my MFW-15 for the Gotham.
Shoot, I'd love your MFW-15.

Panasonic TC-P50G10 1080p Plasma | Onkyo 805 | PS3 Slim | Xbox360 | Wii | APC H10 | Harmony One
Def Tech BP6B Fronts | Def Tech CLR 2002 Center| Def Tech BP2X Surrounds | PA-120 Subwoofer
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