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Multi-Way Conventional loudspeakers with crossovers

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Old 26th September 2012, 04:10 PM   #71
Pano is offline Pano  United States
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FWIW, I've also head the P.Audio 18" coax (no longer made) in a big BR box. It was prodigious, to say the least. The woofer is still made, sans the horn in the middle. It's an 18" driver than can actually be crossed up at 500Hz.

An 18" moves a lot of air and you can both feel and hear it. It does make a difference.
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Old 26th September 2012, 04:20 PM   #72
tinitus is offline tinitus  Europe
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Beyma 15P80Fe...looks like a new one
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Old 26th September 2012, 04:25 PM   #73
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Quote:
Originally Posted by Pano View Post
An 18" moves a lot of air and you can both feel and hear it. It does make a difference.
Can it also do the delicacy of low level home listening or is it all or nothing with an 18? I've created merry hell with 15's before and I know they work well in larger rooms. Would an 18 be bonkers?

Pano you mentioned the Blue Monster P-audio range. Is this one? P-Audio 15BM-500B 15" 500W Low Frequency Speaker Driver from P-Audio 121.03 IN STOCK (26 Sep 2012) I can only find drivers with BM in the product code. No mention of 'blue monster' thou

Altec 416's from GPA are an overshoot on spending 344.90 for a pair before shipping and they weigh 27lb packed - EACH!!!! then import taxes! In the Onken how high can they go?
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Last edited by JRKO; 26th September 2012 at 04:30 PM.
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Old 26th September 2012, 04:25 PM   #74
tinitus is offline tinitus  Europe
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to be honest, for myself personally I am getting tired of not being able to find the woofer I want

might 'give in' and decide to go for a 2way 100hz design, and a cheap TH sub
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Old 26th September 2012, 04:43 PM   #75
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Quote:
Originally Posted by JRKO View Post
Drivers need to be easily available in the UK or Europe at farthest to make the cost more viable (% transport cost to driver cost - ie 58% of above driver cost is getting it here)
Well, it does help if you actually mention that.

18Sound 15ND930, 10NMB420, ND1030, SEOS12 or 15. All made in the EU.
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Old 26th September 2012, 04:49 PM   #76
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Hmmm.... looks like P.Audio have changed the BM woofer line recently. They used to look just like the coax, without the compression driver on the back. Don't know how close the new is to the old.

Yes, some of these pro 18s can play very well at low levels. They are clean and low distortion drivers. They don't have to be brutes all the time.

The Onken with the 416-A was generally crossed circa 700 Hz. The 416 is one of the rare 15 inch woofers sounds good up to about 2 KHz.
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Old 26th September 2012, 04:52 PM   #77
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Dont give in!!!

Whats the practical difference between the 15MI100 I mentioned earlier and the 15P80Fe?

15MI100-------------------------------15P80Fe
72g-----------------mms--------------98g
24mm-------------xmax--------------26mm
48hz----------------fs-----------------41hz
0.28---------------Qts-----------------0.24
21.6---------------BL------------------22.9
101-----------dB/2.83v/m------------100.6

Heavier cone (+29g) means lower fs but Qts is lower meaning a comparably stronger magnet and high Spl despite heavier cone.

All told is the lower Fs the winning card?
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Old 26th September 2012, 05:31 PM   #78
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ah, small differences
biggest difference would probably be Xmax
and you got the Xmax specs wrong
those are the max Xmax before final damage banging against the back pole plate
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Old 26th September 2012, 05:39 PM   #79
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Quote:
Originally Posted by Brett View Post
18Sound 15ND930, 10NMB420, ND1030, SEOS12 or 15. All made in the EU.
Nice selection! There's not that much on 18Sound drivers on here. How are they regarded?

Also the use of neodymium magnets - they are the strongest permanent magnets and so a small magnet is used. Other than weight & size is there any other reason to pay more?

Quote:
Originally Posted by Brett View Post
Well, it does help if you actually mention that
Quote:
Originally Posted by JRKO View Post
Post 17 ........45.24..............222.18...........but 444 for 2 woofers is.............
tnx Brett
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Old 26th September 2012, 05:41 PM   #80
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well, there is one pro woofer I expect might be good for home use, and thats the 18FH500 from FaitalPro
for two main reasons
smallish 3" voice coil, and no double spider
using only one spider gives it lower Fs
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