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Multi-Way Conventional loudspeakers with crossovers

Open Source "Tower XL"
Open Source "Tower XL"
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Old 20th September 2018, 07:28 PM   #11
KaffiMann is offline KaffiMann  Norway
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Open Source "Tower XL"
Yes, I've been looking at some Faital woofers. They are pricy though. A decent matching mid also drains the wallet rather quickly, not to mention a good quality tweeter. Wow, I seem like "mr. Optimistic" himself all of a sudden...
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Old 20th September 2018, 07:36 PM   #12
Paul Vancluysen is offline Paul Vancluysen  Belgium
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Aatto,

The sims, all B4 alignments.

BMS 15N630
Cabinet = 125 L and tuned at 39 Hz, F3 = 40 Hz and sensitivity = 96 dB half space

Faital Pro 15FH520
Cabinet = 130 L and tuned at 39 Hz, F3 = 39 Hz and sensitivity = 96.5 dB half space

Eminence Kappa 15FLA
Cabinet = 145 L and tuned at 39 Hz, F3 = 40 Hz and sensitivity = 97.4 dB half space

The Eminence Kappa needs more volume, because of lower Qts and higher Vas. Highest sensitivity, 91.4 dB full space ... almost the 92dB full space.

The Faital has a high Qms = 10.25, interesting...

Last edited by Paul Vancluysen; 20th September 2018 at 07:42 PM.
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Old 21st September 2018, 02:43 PM   #13
Aatto is offline Aatto  United States
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So Eminence Kappa 15FLA is the winner so far.
this FaitalPro 15PR400 also looks good but need larger cabinet, Humble Homemade Hifi used it in Calpanos (200 liter tuned to 37Hz -3db. better priced than FaitalPro 15FH520.
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Old 21st September 2018, 02:50 PM   #14
EarlK is offline EarlK  Canada
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Quote:
Originally Posted by Aatto View Post
Achieving a high efficiency 8 ohm speaker with low extension is the main factor here and all falls under woofer's territory, so I suggest to start with possible woofer candidates.
I would suggest a poll is in order to see how many users will accept a 15" woofer > especially when a pair of 12" woofs would also ( more than ) deliver the SPL & extension requirements.

A pair of 12" woofers can offer more design flexibility ( ie; TMWW, > even a 3.5 arrangement ) and give a nicer looking tower ( IMHO )

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Old 21st September 2018, 03:00 PM   #15
Aatto is offline Aatto  United States
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totally agree about the looks and the fact that if we can achieve that with smaller woofer there's no need for a huge 15 incher, but finding a woofer even within 15 inch range to meet needed specs is not easy, 16 ohm woofer for a TMWW also not easy to come by, so what do you suggest ?
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Old 21st September 2018, 03:17 PM   #16
mbrennwa is offline mbrennwa  Switzerland
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Quote:
Originally Posted by EarlK View Post
I would suggest a poll is in order to see how many users will accept a 15" woofer > especially when a pair of 12" woofs would also ( more than ) deliver the SPL & extension requirements.

A pair of 12" woofers can offer more design flexibility ( ie; TMWW, > even a 3.5 arrangement ) and give a nicer looking tower ( IMHO )
We've had that discussion before. I fully agree with your, except that using two woofers means you'll have to find suitable 16 Ohm drivers. The choice is rather limited compared to the 8 Ohm world.
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Old 21st September 2018, 03:28 PM   #17
EarlK is offline EarlK  Canada
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Aatto, mbrennwa,

Right, I forgot you're currently set on a minimum 8 ohm impedance.

For my own purposes, I always allow 4 ohms as the minimum impedance.

You may find that others may accept that lower impedance choice ( POLL ? ), once they understand the trade-off realities ( when pursuing sensitivity ).


Last edited by EarlK; 21st September 2018 at 03:44 PM.
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Old 21st September 2018, 03:47 PM   #18
mbrennwa is offline mbrennwa  Switzerland
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You may find that others may accept that lower impedance choice ( POLL ? ), once they understand the trade-off realities ( when pursuing sensitivity ).
That was already covered in the poll of the "part II thread".
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Old 21st September 2018, 04:14 PM   #19
EarlK is offline EarlK  Canada
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Really?

I guess I missed some implied meanings that were baked into that poll (since there's no specific mention about impedance limits in any of the polling questions that I can see).

I now wonder how many others may be in the same boat (regarding confusion over "what's an allowable impedance curve").

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Old 21st September 2018, 04:23 PM   #20
Aatto is offline Aatto  United States
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Most of the specs are covered in the first post of this thread but please let me know if I missed something or if it is vague
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