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  1. W

    Current best DIY subwoofer design?

    got a 12W7 for a song last year. installed it in a kappa perfect box. moved the 12VQ to a 1.3 cuft sealed cabinet. both subs are powered by an inuke3000, 1 sub per channel. also using a miniDSP as subsonic filter at the moment, no time to tinker and learn REW:D 12W7 sounded way better than the...
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    My Infinity Kappa Build

    nice build pmcenaney. i am interested in getting the peavey IPR 1600 DSP. does the DSP function of this amp equivalent to the miniDSP, most importantly the HPF or subsonic filter? does the IPR 1600 amp needs a bump box (art cleanbox or samson) to increase the voltage output of the receiver's...
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    The Crown XLS DriveCore Thread

    i'm glad to hear that 'coz the 809 and 818 are almost identical receiver so it should work fine as well.
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    The Crown XLS DriveCore Thread

    good if it accepts RCA without issues. have read before that some owners experienced low output due to low input signal coming off the receiver's sub out. what is the power requirement of an XLS1500 running at max load? i have a 3000 watts automatic voltage regulator (step down from 220 volts...
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    The Crown XLS DriveCore Thread

    the JL12W7 is a single 3-ohm sub hence, i will have to use 1 ch only as bridging the amp can go up to 4-ohm load only according to specs. the W7 works perfectly in a Simple Kappa Box with slight modification to accommodate the taller driver. it even out-performs the kappa perfect...
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    The Crown XLS DriveCore Thread

    clarification: what i meant about input voltage is the MAINS, from the default 110 volts to 220 volts.
  7. W

    The Crown XLS DriveCore Thread

    hi, is the crown XLS1500 input voltage user selectable? i plan to get one from amazon and use it overseas with 220 volts power outlet. does it really need a samson or art cleanbox to level match the XLS input from the receiver? i am using an onkyo 818 and not sure if the sub pre-out has enough...
  8. W

    Simple 12" Infinity Kappa VQ MidQ Plans

    here's my kappa 12d vq sub and JL w3v2 sub in a kappa box with grilles on here's the in-room freq response with the 2 subs using a home made mono amp
  9. W

    Simple 12" Infinity Kappa VQ MidQ Plans

    thanks for the tip but i live on the other side of the world. i still have another option to complete a dual simple kappa build setup by ditching the 12dvq and getting two used 12W7 but a bit out of my budget at the moment.
  10. W

    Simple 12" Infinity Kappa VQ MidQ Plans

    how about a 120.9 or a jl12w6v2 perhaps to pair with the 12dvq, will they work in a dual sub setup? also, are two identical passive subs ideal (individually enclosed) if only powered by an external mono amp? the amp is stable at 4 ohms with the 2 dual-4 subs in series-parallel.
  11. W

    Simple 12" Infinity Kappa VQ MidQ Plans

    thanks chris. i don't have the 13w6v2 yet but saw a used one selling for $215. i'm still scouting for another driver to complete a dual kappa sub project. i already have a 12dvq.
  12. W

    Simple 12" Infinity Kappa VQ MidQ Plans

    JL 13w6v2 can a JL 13w6v2 work in this cabinet? here's the T/S parameters: (Fs): 24.3 Hz Electrical “Q” (Qes): 0.464 Mechanical “Q” (Qms): 6.700 Total Speaker “Q” (Qts): 0.434 Equiv. Compliance (Vas): 3.94 ft3 (111.6 litres) One-way, Linear Excursion: 0.85 in. (Xmax)* 21.6 mm...
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    EP4000 or QSC RMX1450

    thanks chris. what i am trying to find out now which of the 2 amps can take 2-ohms load in stereo all day (not literally though) used in HT at reasonable listening level. the ep2500/4000 has been proven to power in stereo by some who uses a 12vq (4-ohms). but in my case i will be using a 12d...
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    EP4000 or QSC RMX1450

    ok, i will build the kappa box as per design. what i've seen in most of the kappa builds here are powered in stereo by an ep2500. that's 650 watts in 4-ohms (12vq). hence, the 600 watts bridge in 8 ohms of an rmx850 is already sufficient to pound the 12d vq. but what if i need a 2nd sub. i...
  15. W

    EP4000 or QSC RMX1450

    jeremy, suggestions noted. thanks
  16. W

    EP4000 or QSC RMX1450

    thanks mike:D well, i better stick with the single kappa sub i have right now. i also saw another used QSC RMX850 for only $190. should have enough juice to power the kappa 12d vq at 600 watts in 8-ohm bridge.
  17. W

    EP4000 or QSC RMX1450

    thanks guys on the feedback. looks like QSC is the amp of choice between this comparo. the amp is used and i have no idea of its history. if for instance the amp has undergone repairs, do you guys think it can still power a 2-ohm load in stereo? any tips on what to check when buying a used amp?
  18. W

    EP4000 or QSC RMX1450

    hi, i'm a noob who's been reading the kappa sub box design of avaserfi and is eager to build my first diy sub. at the moment i only have a used kappa 12d vq (dual 4). i will be buying an amp but still undecided which one to get. the 2 amps i am having trouble choosing are, a used QSC RMX1450...
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    Kappa 12DVQ LoQ Insert

    found a kappa 12d vq review from caraudiomag. the following are the dimensions of the insert. LoQ: Length = 2.875", Pole Vent Diameter = 1.0'' MidQ: Length = 1.875'', Pole Vent Diameter = 1.125'' Hence, I will have to send the LoQ insert to a machine shop to have it cut and increase the vent...
  20. W

    Kappa 12DVQ LoQ Insert

    thanks matt34. i will contact the local dealer in my place (philippines). but if the midQ insert is not available, can i possibly modify the loQ? i've sent an email to infinity regarding modifying but did not get a reply todate.
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