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2x12" reflex

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king david View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote king david Quote  Post ReplyReply Direct Link To This Post Topic: 2x12" reflex
    Posted: 05 June 2013 at 3:56pm
anyone tried this design? what do you think?

http://www.lautsprechershop.de/index_hifi_en.htm?http://www.lautsprechershop.de/pa/d3300_2_k12_en.htm


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ceharden View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 05 June 2013 at 10:23pm
It's a bit basic. Yes it probably works but not difficult to make something a bit nicer.
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king david View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote king david Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2013 at 1:38pm
would try them with b&c 12pe32 and de250+me45...cut off at 2khz...
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king david View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote king david Quote  Post ReplyReply Direct Link To This Post Posted: 21 June 2013 at 3:55pm
tried that design, built a prototype...
best crossover was around 2,4khz, but the 2 x 12" dont play good that high, just one has more output than 2 from 1,2khz and above, they rock on 160-600hz but after that, its a trouble, so i buried the project and going to build a single 12 reflex tuned to 85hz and little less than 40 l., de250+me45 above that
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ceharden View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 22 June 2013 at 1:17am
I use 2x12" up to 1.4kHz without any problems but the drivers are as close together as possible.

With a 1" compression driver you're better off with 1x 12" so you've probably gone for the best solution.
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tatomarcelo View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tatomarcelo Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2013 at 1:14am
"..tried that design, built a prototype...
best crossover was around 2,4khz, but the 2 x 12" dont play good that high, just one has more output than 2 from 1,2khz and above, they rock on 160-600hz but after that, its a trouble, so i buried the project and going to build a single 12 reflex tuned to 85hz and little less than 40 l., de250+me45 above that..."
hello
 
I read your note, I wanted to consult you advise me bass reflex design for my two B & C 12PE32, which I combine with DE250
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Tony Wilkes View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tony Wilkes Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2013 at 2:00am
Simple, sell the comps, brilliant as they are they are not suitable for your requirements.

Then buy some BMS 4547 or 4550 and stick them on a Faital LTH102 and cross at 1.2k

Beware the soothsayer's that say this will not work :)

Pm me if you would like some help with the box

Tony
www.forteaudio.eu - BMS - db-Mark Processors - Lexon (SAE)
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king david View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote king david Quote  Post ReplyReply Direct Link To This Post Posted: 21 November 2013 at 1:12pm
very easy job, you have more chances

-you can build 2 boxes each one with 1 12pe32 and 1 de250
-you can build a 2x12 + de250 but while the 2x12 would be very strong til 1,2khz and the de250 would be very strong in the 2khz+ range, you will lose some output between 1,2khz and 2khz. since everyone wants best and no compromise, i would say dont do this
-you can follow tony wilkes advice, or go for biiger driver/horn like 1,4"
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