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Thread: Mirrored B460s with custom slope-fronted 4345-ish tops (notional)

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    Senior Member grumpy's Avatar
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    Mirrored B460s with custom slope-fronted 4345-ish tops (notional)

    Anyone ever pondered something like this vs the std gorilla coffins?
    (think we're out of monkey coffin territory at this size)

    I'd be biamping anyway... easier to move around, and I like the modular concept.

    Mostly curious about 4345 vs B460 bass sound quality (big cab vs eq'd alignment).
    Experienced opinions encouraged. I have the theater 4645 18" boxes that have had both
    2245 and 2242s in them, but have not heard B460(s) -or- 4345s (e.g., used higher than the
    80Hz or so I've run the 4645s at).

    Tops can go with newer 12" (1200) or stock 10" (2122), 2"-exit CD+short horn+lens, ring radiator top (2403/4/5)
    (haven't yet heard Todd's 2402 lenses, but I have some 2402-5's somewhere also). 1st cut will likely adhere
    to stock(ish) 4345 complement.

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    Mirrored B460

    Frequently and with fondness!

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    Senior Member BMWCCA's Avatar
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    Quote Originally Posted by grumpy View Post
    Mostly curious about 4345 vs B460 bass sound quality (big cab vs eq'd alignment).
    Experienced opinions encouraged. I have the theater 4645 18" boxes that have had both
    2245 and 2242s in them, but have not heard B460(s) -or- 4345s (e.g., used higher than the
    80Hz or so I've run the 4645s at).
    Not sure I understood your comment. Of course you already know the 2245 in the 4345 is crossed at 290Hz.

    My 4345s provide prodigious amounts of bass—in my house, in my room.
    ". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers

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    There was a build of DIY mirrored B460s here not all that long ago, can'the recall the builder at the moment.

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    Senior Member grumpy's Avatar
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    Sorry, tried to stuff too much info into a small space. Appreciate the responses.

    As I'd be bi-amping, was interested in 2245 alignments in 8ft3 (B460 type volume)
    -and- running up to ~300Hz... deviating from 4345 further (seems it had been suggested
    that one could also go with an expanded volume box, ... perhaps not quite the 12ft3
    monster from the 1983 DIY article).

    Should be able to experiment/compare w/ old 4645 (3-port to play with) units and 5235
    in bump mode before ruining good wood

    edit: thanks JeffW... the noted article had indeed provided useful info and motivation!

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    Quote Originally Posted by grumpy View Post
    ......Mostly curious about 4345 vs B460 bass sound quality (big cab vs eq'd alignment).
    Experienced opinions encouraged. I have the theater 4645 18" boxes that have had both
    2245 and 2242s in them, but have not heard B460(s) -or- 4345s (e.g., used higher than the
    80Hz or so I've run the 4645s at).

    Tops can go with newer 12" (1200) or stock 10" (2122).......
    I use the 8 cubic foot 2245 (B460 clone) boxes from the GT diy article you mentioned, with a BX63A for the eq bump. I have listened to (but not lived with) 4345s. Not flaming the 4345 here, but my feeling right from the get-go was the 2245 runs up too high @ 290hz. Just my opinion. I suppose I'm saying I prefer the 2245 as a sub woofer. Since you're experimenting, perhaps the 12" woofers you mentioned (or maybe 15" E-145s?) could be used for mid-bass duty, and crossed over lower than the original 4345.

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    I kinda wanted to try a 2245/2206/4" CD /tweeter if needed set up at one time. Like 4350-ish but an 18" vs two 15s.

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    Senior Member grumpy's Avatar
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    Glad to have the inputs, thanks.
    Makes me happier with the modular decision

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    Senior Member RedCoat23's Avatar
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    Quote Originally Posted by JeffW View Post
    There was a build of DIY mirrored B460s here not all that long ago, can'the recall the builder at the moment.
    It was mine Jeff,

    Called B460 The Twins

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    Senior Member ivica's Avatar
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    Quote Originally Posted by JeffW View Post
    I kinda wanted to try a 2245/2206/4" CD /tweeter if needed set up at one time.
    Like 4350-ish but an 18" vs two 15s
    .
    Hi JeffW,

    Have You any "results", my interest is in that "way" ?


    Regards
    Ivica

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    Quote Originally Posted by ivica View Post
    Hi JeffW,

    Have You any "results", my interest is in that "way" ?


    Regards
    Ivica
    No, never pursued it.

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    Quote Originally Posted by RedCoat23 View Post
    It was mine Jeff,

    Called B460 The Twins
    Thanks for the memory jog!

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    Question

    Quote Originally Posted by JeffW View Post
    I kinda wanted to try a 2245/2206/4" CD /tweeter if needed set up at one time. Like 4350-ish but an 18" vs two 15s.
    You mean like this? I'm on it!


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    Party on! I was planning on a newer waveguide, but that's right in the ballpark

  15. #15
    Senior Member grumpy's Avatar
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    Fun set of raw drivers!

    Matching horizontal polars and sensitivity might be easier w/ another 2206 pair (?splayed or vertical)
    just thinking out loud... If multi-amping and ultimate volume isn't key, then just matching polars would still help. I do wonder how well the funky "broken dome"-looking physical modifiers work... as seen on recent portable jbl pa boxes, or if better left to non-critical listening applications.

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