XBL^2 motor for IB

[jsluk]

Hi, I saw this mentioned in an earlier thread that DIY cable's new 15" sub woofer will use this motor. It's not my intention to start a battle regarding which motor design is better. But is there a big advantage to use XBL^2 motor as compare to current designs? Thanks.

[diycable]

The advantage of XBL^2 motors is that you can design them to achieve a flat BL curve over the range of stroke. It also uses a shorter coil so you generally have less inductance.

But.... your question is very general. There has been other methods used to achieve flat BL but they are not common in most drivers on the market. For example, TC used a design that worked very well in the LMS series.

Traditional motors with overhund/underhung have worked for years with at least passable results and the use of an XBL^2 motor alone does not make a driver necessarily better. Its sort of like advertising that your engine has a "four valve head" and "variable valve timing". Those factors can improve the engine design but it takes more than just those characteristics to have a good engine.

The entire driver design, not just the motor are important for good performance.

[carvernut]

diycable said:

Its sort of like advertising that your engine has a "four valve head" and "variable valve timing". Those factors can improve the engine design but it takes more than just those characteristics to have a good engine.

i'll take my big block 454 over a little 1.8litter VTEC 16 valve variable cam timing engine any day of the week ;D

no placement like displacement ;D

maybe i'm just old fashioned but i'll just use a lot of large diameter drivers for maybe the same results as two of these new xbl^2 drivers... but i'll be darned i'll have bragging rights of looking more impressive! ;D

no matter how much horsepower that 1.8 VTEC puts out... it's NEVER gona sound as good as the roar of american muscle big blocks!


hehe stereo's and cars are my two biggest weaknesses ;D

[diycable]

carvernut said:

diycable said:

Its sort of like advertising that your engine has a "four valve head" and "variable valve timing". Those factors can improve the engine design but it takes more than just those characteristics to have a good engine.

i'll take my big block 454 over a little 1.8litter VTEC 16 valve variable cam timing engine any day of the week ;D

no placement like displacement ;D

maybe i'm just old fashioned but i'll just use a lot of large diameter drivers for maybe the same results as two of these new xbl^2 drivers... but i'll be darned i'll have bragging rights of looking more impressive! ;D

no matter how much horsepower that 1.8 VTEC puts out... it's NEVER gona sound as good as the roar of american muscle big blocks!


hehe stereo's and cars are my two biggest weaknesses ;D

Ha! All analogies fall apart at some point. The XBL^2 motors typically ARE the big bore full displacement beasties. ;-)

You could use variable valve timing and 4 valve heads on a good ole fashion piece of American iron. It isn't a technology that is limited to rice-burners.

[carvernut]

ugh no thx... regular heads are bad enough let alone variable timing cams... wish that you could use four valve heads with the stock bottom end but i don't think there would be any way you could jury rig it... minus using timing belts or chains like how VTEC's work on the front

[brad]

carvernut said:

ugh no thx... regular heads are bad enough let alone variable timing cams... wish that you could use four valve heads with the stock bottom end but i don't think there would be any way you could jury rig it... minus using timing belts or chains like how VTEC's work on the front

www.araoengineering.com/ ... Who needs any extra timing chains? If you're willing to pony up 10 G's you, too, can have over 500 cfm of intake flow at .600 lift. Lots of flow there, but I will stick with my AFR heads.

By the way, you did know that VTEC stands for "virtually torqueless economy car", right ...