Adding Additional SVS Sub

Sherardp
Sherardp Posts: 8,038
Just a quick question on adding an additional SVS PB12 Plus/2, anyone here running dual subs, if so is there anything I need to be aware of? Do I need any additional equipment to prevent cancellation etc?

I also saw the JL Audio Gotham G213sub, anyone have info(where to buy, how much they go for) on this product and if so how would it measure up to this svs sub. If I go JL audio then I will go for two Gotham Subs and sell my current SVS sub. Any help is appreciated.
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Post edited by Sherardp on

Comments

  • Schwingding
    Schwingding Posts: 363
    edited March 2007
    Cannot comment on the JL, just don't know. But I do have dual PB12 +/2s. I'm still trying to figure out how to really equalize them, but phase control has not been difficult. With both subs on and varying test tones, I adjust the phase knobs till the highest SPL readings are displayed. Leave them there.

    The room response of the two subs is remarkably different based on location! My asthetic tastes just won't allow me to stack them on top of each other, and having them in separate locations helps even out the sound. I also cannot tolerate huge bass traps in each corner, so other methods are required for bass control. SVS recommends stacking them on top of each other - no phase issues at all and a 6db boost.

    The method for calibrating them is well documented, and Eric or Ron from SVS will fill you in on it as well.

    Taming the peaks - well thats a different story. I have found a flatter response when setting one to 16Hz tune and the other to 20Hz. But I'm tired enough of messing with the PEQs and still having peaks that I'm going to buy a BFD in the next few weeks - with 24 filters available, I should be able to get that line damned near flat.

    Hope that helps some.
    HT/music rig
    Panasonic PX60U 50" plasma
    Yamaha 5990 AVR
    Onix SP3 tube amp
    bunch of Outlaw 2200 monoblocks
    DUAL SVS PB12+/2 subs :eek:
    Denon 3910 DVD/SACD/DVD-A
    DirecTV HR10-250 DVR
    Onix Strata Mini mains
    Mirage OM10 surrounds
    Polk CSi5 center
    Polk SC80 rear surrounds
    Samsung BDP1000 blu-ray player

    Bedroom rig
    Jolida SJ302a tube amp
    Denon 2910 universal player
    Onix Ref 1 monitors
    Velodyne minivee
  • Deadof_knight
    Deadof_knight Posts: 980
    edited March 2007
    phasing is a mother of a problem if you ask me
    :cool: " He who dies with the most equipment wins Right ? "

    Denon 3300 Adcom 535 BBe w/sub out 1 pr 4.6s 2 pr of 4 jrs Recent additions Samsung Lns-4095D LCD, Samsung hd-960 DVD, Monster HT-5000 Power center
    ,HPSA-1000 18" sealed DiY home sub.:D
    Black Laquer 1.2tl's w/ upgraded x-overs and Tweets BI-Amped with 2 Carver tfm-35's Knukonceptz 10ga cables
  • VR3
    VR3 Posts: 28,644
    edited March 2007
    Don't dismiss the VMPS Larger Subwoofer.

    It is essentially 1100 with a 1000 watt amp.

    Thats 118db at 20hz with dual Larger subs.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • Grimster74
    Grimster74 Posts: 2,573
    edited March 2007
    Hey Sherardp, don't hold me to this but I want to say the JL sub are somewhere around $2500-$3000/ea. I'm pretty sure I seen it in a Sound and Vision magazine. If I was going to spend that kind of cash, why not wait until the new Ultras come out and see what they have to offer. By the way, thanks for the package w/ the update Sony update disc, etc., can't wait for it to get here.
    Money Talks, Mine says Goodbye Rob!!!!
  • Ron Temple
    Ron Temple Posts: 3,212
    edited March 2007
    Grimster74 wrote:
    Hey Sherardp, don't hold me to this but I want to say the JL sub are somewhere around $2500-$3000/ea. I'm pretty sure I seen it in a Sound and Vision magazine. If I was going to spend that kind of cash, why not wait until the new Ultras come out and see what they have to offer. By the way, thanks for the package w/ the update Sony update disc, etc., can't wait for it to get here.
    Thats the Fathom pricing...I think the Gothams are north of $5Gs. Quite a few of the more well healed sub owners have gone for this unit (the f113 Fathom). It's supposed to be an excellent unit.

    Combo rig:

    Onkyo NR1007 pre-pro, Carver TFM 45(fronts), Carver TFM 35 (surrounds)
    SDA 1C, CS400i, SDA 2B
    PB13Ultra RO
    BW Silvers
    Oppo BDP-83SE
  • bassaholic
    bassaholic Posts: 315
    edited March 2007
    The flagship Gotham g213, weighing in a 305 pounds, incorporates a pair of JL Audio's 13.5-inch extreme-excursion drivers (specifically engineered for the Gotham) plus an amplifier capable of "3800 watts of short-term RMS power". And when they say "extreme-excursion drivers", they're not kidding. The newly designed woofers are said to be able to travel a full four inches from peak to peak, and the system can "deliver performance to well below 20 Hz in a typical home theater application." The smaller Fathom f113 (130 lbs.) features a single 13.5-inch woofer with a 2500-watt amplifier while the Fathom f112 (115 lbs.), the smallest of the trio, includes a single 12-inch woofer with a 1500-watt amplifier. JL Audio maintains that, thanks to the "dynamic advantages of their proprietary JL Audio woofers" and the built-in powerful switching amplifiers, with the Fathom subwoofers "listeners can expect full bandwidth down to 22 Hz and very high output while keeping distortion well below audible thresholds."

    All three models utilize what JL Audio calls Automatic Room Optimization (A.R.O.), a built-in feature that allows quick acoustic optimization of the subwoofer system in your listening room. Here's how A.R.O. is supposed to work: After you've paid someone to move all 305 pounds of the Gotham, for example, into position in your room all you do is connect the supplied microphone to the front panel and push the A.R.O. Calibrate button. Using a series of self-generated test tones, the sub's internal smarts measures frequency response at the listening position (assuming, of course, that's where you remembered to place the microphone), analyzes the output, and configures a filter to correct the noted low-frequency acoustic problems.

    While it's true that you should never judge a book by its cover or a subwoofer by its luxurious, hand-rubbed gloss-black finish, one look at the Gotham g213 creates instant desire. The illuminated output level control knob on the top begs you to take it to +15dB. And the option of running it as "master" or "slave" in a multiple Gotham system (the Fathoms are likewise linkable) is truly frightening. Until we get a chance to test one under real-world conditions, we'll have to reserve final judgement. At the moment, however, it looks as though the JL Audio folks have done their homework. The new subwoofers aren't expected to be available until the April/May 2005 timeframe. For the Gotham g213, be prepared to shell out $7,500. It will only be available in the high-gloss black finish. The Fathom f113 will run $3,000 in gloss black or $2,800 in matte black. The Fathom f112 will also be available in two finishes - gloss black and matte black - at $2,400 and $2,000 respectively.

    I''ll be accepting donations through July:)
    Pioneer SC-37
    RTiA9-fronts
    CSiA6-center
    RT55i-surrounds
    SVS PB13 Ultra & PSW650
    Monster Power 3250 amp
    Monster Power 2250 amp
    Monster Power HDP-2500 surge pro.



    Denon 3805,CS400i,RT25i's & FX500i's sitting in the basement collecting dust
  • Sherardp
    Sherardp Posts: 8,038
    edited March 2007
    Grimster74 wrote:
    By the way, thanks for the package w/ the update Sony update disc, etc., can't wait for it to get here.

    No probs Grim, I'll just wait on the new SVS, and decide from there.
    Shoot the jumper.....................BALLIN.............!!!!!

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