DIY semi-decent budget ($6/$700)

Habanero Monk
Habanero Monk Posts: 715
edited February 2013 in DIY, Mods & Tweaks
Ok after perusing and lurking about a bit I was looking at a builds using two Infinity Reference subs per box.

Seems to be a popular build right now and seems to maximize my Christmas gift to myself. I paid off my Yamaha amp so onto this now. The LSi9's sing but need something on the bottom.

Any suggestion (are there 12" Polk or other drivers I should look at). Also I could do two Dayton HF (but two and not four). Not sure what I am gaining or losing (volume obviously) but the Daytons individually are better but are they 2.5 times better? 10" drivers don't seem to save me much budget wise.
Post edited by Habanero Monk on

Comments

  • Face
    Face Posts: 14,340
    edited November 2012
    Your budget for drivers only?
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • Habanero Monk
    Habanero Monk Posts: 715
    edited November 2012
    No, $700 is kinda my top Drivers/amp. Wood is a non issue since I have some left over from remodling. Maybe another $50. From what I saw I was hoping to shoe horn it between 6/700.

    Maybe take advantage of a closeout or coupon from Guitar Center for an amp (or even used). Those guys were really helpful last time (the Akron Oh store). I guess it helped that they where slow.
  • Habanero Monk
    Habanero Monk Posts: 715
    edited November 2012
    Ok, I think I read your post wrong. $150/driver would be stretching it. $120 more in my mind. The Reference are $56'ish per. Figured two drivers per box wouldn't need be driven as hard. Saw this on AVS, Parts Express, Audioholics. Seems to be a lot of people building this.
  • Face
    Face Posts: 14,340
    edited November 2012
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • Habanero Monk
    Habanero Monk Posts: 715
    edited November 2012
    Wouldn't two 12"s be preferential to a single 15"? Or would the difference not be that much? The cost is $16-20 in favor of the 15" (if I build two boxes). What about the XLS that have seen mentioned. People seem to really like the sound quality (even compared to some really expensive gear) and it is a more affordable option.

    What would the sealed box size on the 15" be? The dual 12's are under 20" cubed. So that is nice. Compact enough given the driver surface area.
  • Face
    Face Posts: 14,340
    edited November 2012
    Multiple subs are preferred to singles due to flatter response, but two 15s fit in your budget, no?

    The XTi series has better DSP for crossovers and room correction.

    IIRC, just over 3ft3 for the 15s.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • Habanero Monk
    Habanero Monk Posts: 715
    edited November 2012
    So for ~$10 difference how will two 15" vs four 12" perform?
  • Face
    Face Posts: 14,340
    edited November 2012
    Four 12's in separate enclosures spread out would perform the best.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • Habanero Monk
    Habanero Monk Posts: 715
    edited November 2012
    I don't think I can do four locations (wouldn't that mean another amp?)
  • Face
    Face Posts: 14,340
    edited December 2012
    Depending on the placement, it doesn't have to mean you need another amp. Four would be optimum, but two is still better than one.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • Habanero Monk
    Habanero Monk Posts: 715
    edited December 2012
    After some due diligence I am going to go ahead with the two dual opposed. People are saying that two will give me some reasonable smoothness based on placement. More surface area than 15", lower distortion, better thermal dissipation and higher power handling, lower and probably no cabinet resonance.

    An Avs'er suggested the Behringer EPX 2000 and I can get one for $249 and put it in the closet with the Yamaha amp.

    So $220 in drivers, $249 in amp. Less than $500 which is great since I wanted to be closer to $600 than not. I can not believe what $470 can do. :cheesygrin:
  • Habanero Monk
    Habanero Monk Posts: 715
    edited February 2013
    Ok so I couldn't resist a good deal on two of the Kappa 120.9w's (open box for $89/per they had a few more and some other types). I figured for a few bucks more why not:

    sub.jpg


    3 lbs of fill and it is incredibly smooth. I have a pro-audio sound card and was able to use a 3rd channel (out of a total of four outs) and use the built in cross over function in it's mixer to sum L+R and then set the Xover at 100hz with a 24dB / Octave roll off.

    It's so seamless that you don't know it's there until you pull the plug on the 3rd channel and then you are going WOW.

    Now I know why so many people are building Jinjuku's dual opposed with these Infinity subs. Just an incredible value. I don't even think $1K would get you there commercially. I can always build another but one seems enough.
    sub.jpg 141.2K
  • FTGV
    FTGV Posts: 3,649
    edited February 2013
    Nice work.I have a pair of the older Ref 1242W's that I use for LFE duties.They are in small sealed box's and with some added EQ via an LT circuit to beef up the bottom a bit .They perform admirably for relatively inexpensive woofers.
  • Habanero Monk
    Habanero Monk Posts: 715
    edited February 2013
    Thank you.

    I finally got over my fear and really turned up the volume. I had the multi-picture frame knocked sideways. I literally bounced off center. Unbelievable. He did a great design. :D (emoticons seem not to be working)
  • zingo
    zingo Posts: 11,258
    edited February 2013
    Congrats and great looking sub!