AE Speakers Dipole 15 or LO15 ? Need advice - diyAudio
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Old 29th March 2013, 02:34 PM   #1
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Default AE Speakers Dipole 15 or LO15 ? Need advice

I will upgrade my open baffle speakers from Eminence Beta15 to Accoustic Elegance Dipole15 or LO15. (One pair in each baffle)

The baffle is 29 inch wide
The room is 11 x 17 feet
I use fullrange drivers* from 100-150 hz so their mission is only bass
The bass amp is a custom 2x50 watt class A transistor (2x500 VA, 200.000 uF)
As active crossovers i have several options: First Watt B5, B4 and a pair of Antimode 8033SII

My goal is to have significant deeper bass than with Beta 15 but i am afraid for a muddy bass. Does anyone have experience with theese two mentioned AE drivers?

* Lowther PM6A, Seas Excotic, Fostex FE203En-S and at last, hopefully a Feastrex in the future I use First Watt F2J or F3 for the fullrange drivers.



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Dipole15:
AE Speakers --- Superb Quality, Unforgettable Performance, Definitely.

Difference between Dipole15 and LO15:
Acoustic Elegance • View topic - Open Baffle woofer options

First Watt B5:
FIRST WATT B5

First Watt B4:
http://www.firstwatt.com/pdf/prod_b4_man.pdf

Anti Mode 8033SII:
http://www.dspeaker.com/fileadmin/da...inemaSIIen.pdf
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Old 29th March 2013, 03:04 PM   #2
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Location: Cascais
Dipole15 (with foam surround)
LO15 (Lynn Olson) damped cloth accordion surround
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Old 29th March 2013, 05:10 PM   #3
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Yes. Correct

And do you have any idea of what i can expect in my setup / room?
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Old 29th March 2013, 06:00 PM   #4
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Hi superlian,
Nice setup you have, very clean, love the wood floor and the colors mates (French for matt colors). I have to say that I'm not an expert in OB.
ACOUSTIC ELEGANCE Dipole15 Qtsb --- 1.09, 88.1 dB/2.83V/m(2Pi), Fsb 18.8 Hz
ACOUSTIC ELEGANCE LO15 (Lynn Olson) Qtsb --- 1.00, 97.5 dB/2.83V/m(2Pi)higher SPL, Fsb 28.5 Hz
EMINENCE ALPHA 15 A Qtsb --- 1.56, 90.5 dB/2.83V/m(2Pi), Fsb 33.51 Hz
EMINENCE BETA 15 Qtsb --- 0.73, 93.0 dB/2.83V/m(2Pi), Fsb 28.54 Hz

Last edited by Inductor; 29th March 2013 at 06:28 PM.
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Old 29th March 2013, 06:18 PM   #5
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Location: Cascais
ACOUSTIC ELEGANCE Dipole15 - SPLFs 111.8 dB (2xdrivers parallel)
Power minim. amp
6.15 Ohms PSPL 78.4 W
Power minim. amp
6.15 Ohms/105 dB P105 16.2 W
ACOUSTIC ELEGANCE LO15 - SPLFs 116.4 dB (2xdrivers series)
Power minim. amp
6.20 Ohms PSPL 100.7 W
Power minim. amp
6.20 Ohms/105 dB P105 7.3 W
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Old 29th March 2013, 07:07 PM   #6
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THX

I know the technical specs very vell. My Q is if anyone have experience or know what i can expect with either Dipol15 or LO15?
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Old 29th March 2013, 07:15 PM   #7
OllBoll is offline OllBoll  Sweden
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If you don't plan to let the woofers play up high then the IB15 is an option. Even better would be if you modified the baffle such that the woofers also sit in a W-frame alignment or one driver inverted.

The good thing about the Dipole15 and LO15 is that they can play much higher than most 15 inchers but since you will only use them for low bass they might even perform worse than IB15 or TD drivers since excursion will be an issue. Underhung drivers perform worse when pushed to their limits than overhung if I remember correctly.
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Old 29th March 2013, 07:32 PM   #8
ScottG is offline ScottG  United States
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Quote:
Originally Posted by superlian View Post
I will upgrade my open baffle speakers from Eminence Beta15 to Accoustic Elegance Dipole15 or LO15. (One pair in each baffle)


My goal is to have significant deeper bass than with Beta 15 but i am afraid for a muddy bass. Does anyone have experience with theese two mentioned AE drivers?

Achieving more articulate bass is often a matter of Qe.. Still, when choosing between drivers with similar Qe - select the more efficient driver for more articulate bass. (..in this case it would be the LO15.)

Another method to achieve more articulate bass is either utilizing a "current" amplifier that reacts well to impedance variation near resonance, OR utilize a large LCR filter to "flatten" driver impedance at resonance.


Note: "muddy" bass is more often a condition imposed by standing waves in the room generating a "peaking" condition in freq. response - with a resulting extended decay.
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Last edited by ScottG; 29th March 2013 at 07:43 PM.
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Old 29th March 2013, 07:36 PM   #9
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A list of a few drivers for OB.
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File Type: jpg Sélection de HP pour baffles plans for 2xdrivers.jpg (384.6 KB, 1054 views)
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Old 29th March 2013, 08:43 PM   #10
Face is offline Face  United States
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Do you have any LF measurements of your current setup?
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