Recommended 15" woofer for Open Baffle

[manninen]

More gladens, four of them per channel would do if you pass the driver.

 

[nicoch58]

there is a diyaudio sub forum for subwoofer '-)

 

[diycoyote]

This is plot which I generated using XIBaffle.xls

 

[Kjeldsen]

ripole...

I will try some different configurations slot loaded, simpel baffel, wings, U baffel, H baffle

 

[nicoch58]

This is plot which I generated using XIBaffle.xls

yep ! you can mix beta /alpha if you need go up ...

 

[TNT]

How about RCF MB15N301?

http://www.rcf.it/products/precision-transducers/neodymium-low-frequency-transducers/mb15n301

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[nicoch58]

at 40hz is 7db under the alpha

 

[Zoran]

This is plot which I generated using XIBaffle.xls

link for XIBaffle.xls ? please?

 

[Zoran]

there are some 18in units, with TS parameters friendly to OB design.
2 per channel please...😀

 

[diycoyote]

Goldwood GW-1858 has good opinion, but 18" is quite too big for me. Interesting idea is mix Alpha and Beta in one baffle, what do you think?

Link for XIBaffle spreadsheet:http://p10hifi.net/TLS/downloads/Xlbaffle.xls.zip

 

[Zoran]

thanks 🙂
maybe i dont know... but if You try mix with alpha and beta put beta closer one to the floor?
...
For my opp. 4 alphas per channel is the best option. And You can have wider range of central and HF units with that solid base...

 

[Zoran]

4 x alpha and beta with IIorder filter cooperation.
another xls in zip, You can use.

 

[RDLewis]

Check out this link, OBL-15 The Faital 15PR-400 always looked as if it had potential and now Troels seems to have proved it !

 

[RDLewis]

OBL-15
Trying again

 

[nicoch58]

the faital work only by Baffle Step Correction Circuit

Ps baffle is wide 85cm !! x 150cm !!

 

[diycoyote]

I used spreadsheet from Zoran (Thx🙂 and I put into datas for PRV and Faital. In summary I'm a bit confused because plot results is different than my 🙁
I comparison Beta vs PRV - PRV go lower but have less SPL, right?

 

[stijn001]

I use a Eminence 3015LF in an OB at the moment with good result. It's one of the most efficient I've seen which means it keeps up with without the need to bi-amp, (in my case) & cone breakup is far enough away to filter passively if xover is low enough.. Bass does extend below audible on a narrow baffle, but not with as much power as a dedicated sub-bass.

 

[stijn001]

Intresting spreadsheet. The 3015LF models quite well, more of less in line with my experience

An externally hosted image should be here but it was not working when we last tested it.

 

[Bare]

Human hearing (when pristine/healthy) is -60 db Down at 30 hz 😉

 

[nicoch58]

no need the hearing x 30hz '-)