Stuffing

ghisdal · 29th December 2006, 09:42 PM

Hi,

I'm building Bob's folded ML TQWT using FE167E driver.

I'm having some problems with the stuffing. I'm used to meters and not feet, so could someone tell me how much polyfill they used per speaker?

Preferably in pounds or kilogram.

Thanks,
Glenn

Scottmoose · 29th December 2006, 10:45 PM

0.25 lbs ft^3. Roughly 0.5lbs of the stuff per cabinet. Chances are you'll want to adjust this to suit your own system / room / taste, so take this as an approximate guide.

ghisdal · 31st December 2006, 07:30 AM

Quote:

Originally posted by Scottmoose
0.25 lbs ft^3. Roughly 0.5lbs of the stuff per cabinet. Chances are you'll want to adjust this to suit your own system / room / taste, so take this as an approximate guide.

Hi,

I've used the amount you recommended. I find the bass a little thin but very exact. The driver only has 30 min of usage. Should I start fiddling with the amount of stuffing already, or should I give them the 100-150 hours of burn in first.

Will the bass output improve during this time?

Scottmoose · 31st December 2006, 10:12 AM

Get the drivers to Xmax a few times and let them settle down first. MLTLs have a somewhat different presentation in the bass to regular vented cabinets -they're usually rather more accurate as they lack the boom reflex can suffer from, which is often a bit of a shock to the system. If you're still finding things a bit light, initially remove some damping material from the lower portion of the cabinet only.

mark02131 · 1st January 2007, 07:54 PM

There is a handy website called onlineconversion.com where you can convert just about anything you want like inches to cm or lbs to Kilo's It really helps me maybe it can help.

http://www.onlineconversion.com/

29th December 2006, 09:42 PM	#1
ghisdal diyAudio Member Join Date: Nov 2006	Stuffing Hi, I'm building Bob's folded ML TQWT using FE167E driver. I'm having some problems with the stuffing. I'm used to meters and not feet, so could someone tell me how much polyfill they used per speaker? Preferably in pounds or kilogram. Thanks, Glenn

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29th December 2006, 10:45 PM	#2
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	0.25 lbs ft^3. Roughly 0.5lbs of the stuff per cabinet. Chances are you'll want to adjust this to suit your own system / room / taste, so take this as an approximate guide.

31st December 2006, 10:12 AM	#4
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Get the drivers to Xmax a few times and let them settle down first. MLTLs have a somewhat different presentation in the bass to regular vented cabinets -they're usually rather more accurate as they lack the boom reflex can suffer from, which is often a bit of a shock to the system. If you're still finding things a bit light, initially remove some damping material from the lower portion of the cabinet only.

1st January 2007, 07:54 PM	#5
mark02131 diyAudio Member Join Date: Nov 2005 Location: Boston, MA	There is a handy website called onlineconversion.com where you can convert just about anything you want like inches to cm or lbs to Kilo's It really helps me maybe it can help. http://www.onlineconversion.com/

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