Modeled the Infinty Reference 1260W

Discussion in 'DIY Corner - Tips & Techniques' started by jinjuku, Feb 11, 2012.

  1. jinjuku Moderator

    jinjuku
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    This is an interesting sub for a whopping $56... Put this in with a 300 watt BASH amp for $120.

    Figure about $220 for the entire shabang including port. ~108dB at 20Hz.

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    Last edited: Apr 5, 2014
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  2. Moutee Junior Audioholic

    Moutee
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    How does it compare to the 120.9W? Chris (WmAx) said that it was a direct replacement with equal, if not more potential than the Kappa Perfect 12vq.
  3. jinjuku Moderator

    jinjuku
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    I would have to model it but I believe about 3 or so dB in favor of the 120.9w since it has more stroke.
  4. jinjuku Moderator

    jinjuku
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    I could see doing two of the 1262W (2 or 8 ohm). Wired for 2 ohm and an iNuke 1000DSP for $299.

    $112 in drivers, $300 in amp/sub management via DSP. Another $60 in MDF. $6 in terminal cups, $20 in paint and $20 vinyl veneer.

    So call it $520 and a day in the garage. There is nothing commercially touching this south of $1500 IMO.
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  5. mardelgo Junior Audioholic

    mardelgo
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    mmmm... very interested in building a pair of these:cool:... any posibilities to calculate the port dimensions with all the width of the box (easier to build...)

    [​IMG]
  6. jinjuku Moderator

    jinjuku
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    Not without making the port REALLY long.
  7. BoredSysAdmin Audioholic Warlord

    BoredSysAdmin
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    Speaking of port Jin, I have hard time understanding from the pdf spec how exactly port is implemented in your model. Could you provide a rough sketch ?
  8. jinjuku Moderator

    jinjuku
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    Fold the linear length however you wish. Much like the Kappa Perfect but shorter...

    You just need the length down the half height point to come out to the indicated length. The attached is from Andrews Kappa Perfect. But not as long obviously. It would only wrap the bottom and the cabinet back.

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    Last edited: Feb 17, 2012
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  9. BoredSysAdmin Audioholic Warlord

    BoredSysAdmin
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    I see. gotcha. thx
  10. mardelgo Junior Audioholic

    mardelgo
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    I have an oaudio 500w amp, what about 2 1262W (dual 4ohm), build two boxes and use 1 in each box, wired in series (4 ohm load) and power with 1 oaudio 500w amplifier? This way I can use the oaudio and also use the subs as a stands for my bookshelfs...:cool:
  11. jinjuku Moderator

    jinjuku
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    That would work.... You wouldn't be using them to their potential but if you already have the Amp it's a great way to get into a cost effective dual sub build.
  12. crypto Enthusiast

    crypto
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    jinjuku,

    Thanks for this. I'm interested in building two of these (but may go with the Kappa 120.9w). I have a couple questions.

    1) If building two, what are the pros / cons of a single iNuke 1000DSP versus two 300 watt BASH amps?

    2) Do you have a link to box build instructions?

    3) I am pretty sure that I'm getting a Denon 3312. Will this amp EQ the sub efficiently or will I still need an SPL meter?

    4) The Denon has two sub inputs. Would I just connect each sub to an input?
  13. jinjuku Moderator

    jinjuku
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    I would go with the Behringer. The DSP will allow for proper EQ to smooth out the frequency response.

    If using the iNuke 1000DSP get the 1262 model of driver and wire for two ohms. This will let the iNuke drive it properly (I believe 2 Ohm at 350 watts RMS).

    Much better solution than plate amps if speaker cable runs aren't a concern.
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  14. crypto Enthusiast

    crypto
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  15. jinjuku Moderator

    jinjuku
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    From their user guide....

    Attached Files:

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  16. crypto Enthusiast

    crypto
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    Thank you, jinjuku!
  17. Moutee Junior Audioholic

    Moutee
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    Does this subwoofer work better in a sealed or ported box, or is it versatile enough to be used in both?
  18. jinjuku Moderator

    jinjuku
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    It will get loud in a 1.2-1.5 sealed cubic foot box. Just not as low.
  19. crypto Enthusiast

    crypto
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    When pairing this up with the iNuke, what cables are needed to connect the amp to the sub and then the amp to the av?
  20. jinjuku Moderator

    jinjuku
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    From the sub-woofer output from AVR you will go RCA to XLR (male).

    From amp to speaker you will use Speakon terminated cables. Just get something like the cable linked and cut it in half/length. This will give you the two needed cables.

    Regular terminal cups on the sub is fine.
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