Trying to pair a bass woofer for ja801/sm75-150 classic mid range
Because the tweeter and mid range are closed I can have more cabinet space or probably have the mid and tweeter mount on a narrow open baffle for better imaging
The cross over frequency between the mid and woofer shall be around 400hz.
Would dual mw19p in ML TL cabinet get the benifit of wo24 between 30hz and 100hz region. Or I should pair them with a different woofer
Because the tweeter and mid range are closed I can have more cabinet space or probably have the mid and tweeter mount on a narrow open baffle for better imaging
The cross over frequency between the mid and woofer shall be around 400hz.
Would dual mw19p in ML TL cabinet get the benifit of wo24 between 30hz and 100hz region. Or I should pair them with a different woofer
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Don't quite understand the question but the wo24p goes down v deep (mid 20s) but needs a large box volume
To get the most sonic value from the ja801/sm75-150 you will need 2" - 4" extra baffle width for edge bevels/rounds to reduce distortion. With a 600Hz crossover, you can smoothly reduce the baffle edge bevels to 0.5" next to the WO24 woofer. With the tweeter at 39" ear level, you should be able to get close to the 2.4cuft internal volume favored for a ported WO24 tuned to 27Hz.
Simply saying exploring the idea of using two mw19p to replace wo24, the reason because is helios wo24 could only achieve 28hz (theoretical limit) and I was wondering whether it is really a good idea to have dual mw19p ( @ 2ish cu ft cabinet to low 30ish f3 ) could replace wo24, so I could get the benefit of the accurate sonic behavior of MW19p.
I haven't seen an actual dual MW19p implemented, so I really need some pointers before start
For W = mw19p...
Run a Xdir simulation of a TM-WW baffle configuration with a 400Hz crossover between the TM--WW and you will see multiple lobes. ick... ick... ick...
Quarter wavelength separation goal: 400Hz = 34" wavelength = 8.5" quarter wavelength = ideal maximum M-W separation. SO, put the wo24 woofer close under to the sm75-150 midrange dome to get the best soundstage.
ATC production speakers put their sm75-150 dome midrange close to a single woofer.
Run a Xdir simulation of a TM-WW baffle configuration with a 400Hz crossover between the TM--WW and you will see multiple lobes. ick... ick... ick...
Quarter wavelength separation goal: 400Hz = 34" wavelength = 8.5" quarter wavelength = ideal maximum M-W separation. SO, put the wo24 woofer close under to the sm75-150 midrange dome to get the best soundstage.
ATC production speakers put their sm75-150 dome midrange close to a single woofer.
Attachments
thanks line source, I am trying to reproduce the multiple lob situation, for
400hz if my distance between the driver (c-c) at at 1/4 wave method 214.4mm looks okay but 1/2 wave method 428.8mm thing is not right
please see attached
PS :
1) is my C-C distance between shall be the center of mid drive to the mid point of the dual woofer
2) the cross over type shall use delund crossover ( or 4th order) so no pahse lag issue
400hz if my distance between the driver (c-c) at at 1/4 wave method 214.4mm looks okay but 1/2 wave method 428.8mm thing is not right
please see attached
PS :
1) is my C-C distance between shall be the center of mid drive to the mid point of the dual woofer
2) the cross over type shall use delund crossover ( or 4th order) so no pahse lag issue
Attachments
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TidBits
"The woodshop capability often sets the design direction."
---What tools can you use for edge bevels/rounds? complex angled cuts?
"A sealed enclosure is the only woofer design that can be made time accurate."
---Clever shaped sealed volumes + active crossovers = Square Waves
A Large diameter woofer with high Qts, in a Big sealed box, will produce excellent bass even with passive crossovers .... but imperfect square waves 🙁 🙁
"The woodshop capability often sets the design direction."
---What tools can you use for edge bevels/rounds? complex angled cuts?
"A sealed enclosure is the only woofer design that can be made time accurate."
---Clever shaped sealed volumes + active crossovers = Square Waves
A Large diameter woofer with high Qts, in a Big sealed box, will produce excellent bass even with passive crossovers .... but imperfect square waves 🙁 🙁
