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-   -   pro driver sound with only 15 watts? (http://www.diyaudio.com/forums/subwoofers/227497-pro-driver-sound-only-15-watts.html)

panduro 10th January 2013 08:39 PM

pro driver sound with only 15 watts?
 
just looking for a bit of experience from those who knows :)

thinking of making a vented subwoofer 90L, fane 15xb driver(tuned to 27hz) to pair it with a couple of satelittes, xover at 80hz with minidsp and a 25W 4ohm tripath poweramp to power the sub.

modelling it in winisd gives me a good response(with cabin gain) and with a bit of boundery gain it should provide me with the wanted target spl. (which is only 100db as it is a system for a bedroom).
music= jazz and rock mostly.

I know power is cheap, but i'd like to do it the low power way if possible.

will a tripath ta2020 poweramp that wattage be able to make it sound well or do i need more power?

best regards

panduro

OscarS 10th January 2013 09:50 PM

I've always been a fan of Fane. My pops still has four Colussus from '91 and they are still all original and still pound the lows. :)

Have you considered a horn of some sort to boost the on-axis sensitivity of the 15xb? Are you familiar with horn modeling software like HornResponse or Akabak?

panduro 10th January 2013 10:09 PM

Hi oscar and thanks for your reply.

I like fane as Well, im running 12" fane cresendo guitar drivers as a midbass driver and 1" jbl compression drivers in my ht doing lr duty.
I know its a guitar driver, but done as a "satelite" speaker crossed at 1200hz it sounds very nice and dynamic as hell.

No expirience With horn moddeling.

Horns for bass freq are quite large arent they?

Mest regards

Panduro

JMFahey 11th January 2013 12:17 AM

I think 15W will be fine, considering it's a bedroom and you can't go very loud anyway.
Why complicate matters with a horn, doubly so because you don't have a lot of space, is beyond me.
If you want more SPL , upgrade amplification to 50W, 150W or 500W, the Sky is the limit. ;)
Watts are cheap anyway.
That said, 15W in a bedroom is fine.

OscarS 11th January 2013 12:48 AM

Oops....didn't see where it said it was gonna be a bedroom :p

The xb should have a sensitivity of around ~94 db/1w/1m, so 15W should get it up to around 105 dB. A standard ported alignment should suffice.

Inductor 11th January 2013 02:55 AM

Sadly Fane COLOSSUS 15XB doesn't go low (extension) with/than ~40Hz@-12dB with any alignment.
panduro,
I love the Fanes, but after saying that, who told you to pick that woofer? Maybe for a (PA) rock concert is just fine.

OscarS 11th January 2013 03:27 AM

Quote:

Originally Posted by Inductor (Post 3320584)
Sadly Fane COLOSSUS 15XB doesn't go low (extension) with/than ~40Hz@-12dB with any alignment.
panduro,
I love the Fanes, but after saying that, who told you to pick that woofer? Maybe for a (PA) rock concert is just fine.

You sure about that, chief?

http://i169.photobucket.com/albums/u...e/fanexbFR.jpg

169L, Fb=34Hz. Using T/S parameters from: http://www.fane-international.com/do...15XB_Specs.pdf


I'd say that goes plenty enough for jazz/rock.

Inductor 11th January 2013 04:33 AM

1 Attachment(s)
OscarS, thanks. I notice some parameters are different in the database (not made by me and maybe an old driver v.). So I will check again with the new T/S.
Edit: Anyway I looked at the PREDICTED BASS RESPONSE on your link and what I said it's not far-fetched.
Quote:

thinking of making a vented subwoofer 90L, fane 15xb driver(tuned to 27hz)

Inductor 11th January 2013 04:58 AM

2 Attachment(s)
As a way of checking I simulated the 2 alignments for the same driver.
1. FANE COLOSSUS 15XB v.2012, VB = 86.6 L, FB = 35.2 Hz, 92.2 dB2.83Vm. F3=52Hz F6=39Hz F12=28Hz
2. FANE COLOSSUS 15XB v.2012, VB = 169.0 L, FB = 34.0 Hz, 92.2 dB2.83Vm. F3=36Hz F6=31Hz F12=25Hz

Inductor 11th January 2013 05:06 AM

Quote:

Originally Posted by OscarS (Post 3320615)
You sure about that, chief?

OscarS, please next time you work a simulation check the displacement of the cone. How much do you have for max displacement? (169L) (Theres something wrong with mine)


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