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2nd December 2009, 05:42 PM
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#1 |
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diyAudio Member
Join Date: Dec 2008
Location: Sunny Sheffield now Barnsley
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Eminence omega pro 15 professional series (blue label)
Hiya chaps n chapesses, been away for a while.
I have an eminence omega pro 15 professional series bass driver thats been collecting dust for a while now. I used it in experimenting with large 3 way designs and had masses of fun with the severe thump this driver produced. My question is: can this badboy be used to create a vented subwoofer because although the unit is 15 years old it would be a shame to sell it on for peanuts. theres nothing physically wrong with the driver and has never really been hammered. These are the params I found for the driver and have never really built a sensible box for this driver, It's been a (muck about with) driver for all It's life. Resonant Frequency (fs) 33Hz DC Resistance (Re) 5.28 Coil Inductance (Le) 1.04mH Mechanical Q (Qms) 5.69 Electromagnetic Q (Qes) 0.33 Total Q (Qts) 0.32 Compliance Equivalent Volume (Vas) 258.5 liters / 9.1 cu. ft. Peak Diaphragm Displacement Volume 411cc Mechanical Compliance of Suspension (Cms) 0.25mm/N BL Product (BL) 17.5 T-M Diaphragm Mass inc. Airload (Mms) 94 grams Efficiency Bandwidth Product (EBP) 99 Maximum Linear Excursion (Xmax) 4.8mm Surface Area of Cone (Sd) 856.3 cm2 Maximum Mechanical Limit (Xlim) 12.2mm EDIT: My only point of concern would be the distinct lack of Xmax with this unit. I may have to bite the bullet and get a better mor up to date driver Thank you in advance Ric! 
Last edited by Village Plank; 2nd December 2009 at 06:09 PM. |
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2nd December 2009, 08:04 PM
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#2 |
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diyAudio Member
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box volume: 106 Liters
port tuning: 41.2 Hz (14cm diameter, 16.8cm long) For a BB3 tuning, safe to 150W [118dB(SPL)] before Xmax is predominant @ 62Hz. F-3 is 48Hz, F-10 is 34Hz. That'll work. Go build it
__________________
 Think out of the box
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2nd December 2009, 09:46 PM
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#3 |
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diyAudio Member
Join Date: Dec 2008
Location: Sunny Sheffield now Barnsley
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Thax davey, should be more than adiquate for most living rooms.
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2nd December 2009, 09:50 PM
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#4 |
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diyAudio Member
Join Date: Dec 2008
Location: Sunny Sheffield now Barnsley
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Thanx man, I've been a bit lazy, just got a new computer and not had time to get everything back on it.
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2nd December 2009, 09:50 PM
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#5 |
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diyAudio Member
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Data files for WinISD pro
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Think out of the box
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2nd December 2009, 10:08 PM
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#7 |
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diyAudio Member
Join Date: Dec 2008
Location: Sunny Sheffield now Barnsley
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Thank you so much
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28th January 2010, 09:01 PM
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#8 |
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diyAudio Member
Join Date: Dec 2008
Location: Sunny Sheffield now Barnsley
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Thanx again davey, Construction is complete and will post piccys soon. I'm still having trouble getting win isd to work properly.
The results of the build are breath taking. In testing, managed 135dB SPL @ 115 Hz. The whole thing weighs 167 LBS!!! (REEEEEAL heavy base plynth) Just waiting for my wallnut veneer and nitrocelluose laquer to arrive now. |
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