Front & rear end DUAL Back Loaded Horn + Bass Reflex Hybrid Enclosure - diyAudio
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Old 9th March 2009, 04:24 AM   #1
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Cool Front & rear end DUAL Back Loaded Horn + Bass Reflex Hybrid Enclosure

Hello everybody !!!

I search to build new SOUNDSTAGE and powerfull Loudspeaker.

Do you know if this design is possible ?

Is it possible to stuff the throat to reduce speed of sound to make very low frequency horn ?


Thanks in advance !

nicK


This loudspeaker is LINE ARRAY + DUAL BACK LOADED HORN front & rear END + BASS REFLEX HYBRID ENCLOSURE
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Old 9th March 2009, 09:47 PM   #2
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this is no joke !

Look at the picture to send me information if this design is possible or not PLEASE !!!

T H A N K S
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Old 9th March 2009, 10:06 PM   #3
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Default Re: Front & rear end DUAL Back Loaded Horn + Bass Reflex Hybrid Enclosure

Hi Nick,

Certainly an interesting design but I am wondering about two things.

1. The difference in the length of the horns. This will mean they will unload at different frequencies. This may, I said may clutter the sound. This can be cured by firing both openings forward.

2. It's a bit of a mystery what the porting into the horn will do. It may further complicate matters. How would you tune them? Also, I think you will lose the advantage of the back loaded horn of you vent the compression chamber.

I know I didn't answer your questions but it may be that you are trying too hard to get the most from them. Others will have to chime in here as I don't qualify as an expert.

Quote:
Originally posted by nickthevoice
Is it possible to stuff the throat to reduce speed of sound to make very low frequency horn ?
No, stuffing can only damp, it will not change the speed of sound. The frequency of the horn has to do with it's length and mouth size. It takes a very large horn to do low frequencies.
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Old 10th March 2009, 12:07 AM   #4
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You mentioned a good point . I loose the power for compression in the throat with this PORT (tuned at 50hz).
I take this at (Fostex FE126E enclosure)


Okay I accept to forgot the port !


In reality what's the difference in BLH
FRONT END vs REAR END ?


In my design it's the same four speaker Silverflute 5 inch tuned at the same frequency in BLH

MY GOAL IS CREATED POWERFULL SOUNDSTAGE LOUDSPEAKER


thanks

nicK
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Old 10th March 2009, 01:22 AM   #5
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FYI, venting the rear chamber is used to damp a peak in a (too small) horn's response. Design it right and you don't need it.

WRT to 'sound-stage', you typically want the four drivers in a square layout such as this as this Westrex FLH:

GM
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Old 10th March 2009, 01:26 AM   #6
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I think you got the scale wrong when you photoshopped that speaker into your living room
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Old 10th March 2009, 01:28 AM   #7
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WRT the horn terminus (mouth), folding to put the drivers in the terminus is as good as it gets for a BLH:

GM
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Old 10th March 2009, 01:43 AM   #8
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Quote:
Originally posted by Iain McNeill
I think you got the scale wrong when you photoshopped that speaker into your living room
I wish that was my living room. Anyway, those are 15" woofers. Here's the cinema configuration:

GM
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Old 29th April 2009, 05:38 PM   #9
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I don't understand why it's a problem to tune the speaker in two different frequency ?


This is my new design !!! HYBRID TQWT/BLH (5 inch silver flute)

TQWT tuned at 50hz other tuned at 30hz (if it's possbile)


I am looking to create loudspeaker can have a "strong soundstage" because I LOVE when the room behind loudspeaker is completely full of sound !

thankS

nicK
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Old 16th May 2009, 08:05 PM   #10
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Hello Nick,

in principle that looks like my double horns.
read the explanation in the middle of "about what"
membran movement cross setting and bass horn mouth distance.

GM, please tell me more about the pic. of the WRT.
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