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what are BL, XMAX, QTS, QES on subs (what do they mean)


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so i was on the "cone area" thread and seen Ray say the first thing she looks for in a sub is "BL first then XMAX then QTS and QES then watts" and i would like some one to elaborate on that and why those matter and what they mean (the simple version) i really appreciate it since i will be purchasing new subs tomorrow either AB HD1822 or Obsidian 18 D2 or AQ HDC3 those are what i have narrowed it down to.

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As I understand it (I am sure an expert could provide more accurate/better description) -

BL - How strong the motor force is of the speaker

XMAX - Max distance the cone can travel

QTS/QES - The mechanical and electrical amount of control/dampening in the speaker aka the brakes to stop the cone going one way and send it the other.

2010 Mazda 3s 2.5L

Pioneer DEH-X9600BHS

Knu OFC 1/0 

SS Platinum AGM / XS Power XP750

Alpine PDX F-4 / Morel Maximo 5 + Coax 5

IA 10.1 / SSA XCON 12 

 

 

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Sorry no can do a vs thread it is against da rulez.

2010 Mazda 3s 2.5L

Pioneer DEH-X9600BHS

Knu OFC 1/0 

SS Platinum AGM / XS Power XP750

Alpine PDX F-4 / Morel Maximo 5 + Coax 5

IA 10.1 / SSA XCON 12 

 

 

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VS threads are not allowed

Neither is rent-a-modding -_-

BL is the force-current ratio. If you know the BL and the Re you can find the motor force by using bl^2/Re. That's why dual 2 and dual 1 coils have different Bl values. But if you calculate the motor force they are the same

Xmax is how much the coil can move, one way, before it leaves the gap. Generally your maximum usable excursion

Qts is a function of Qms and Qes. A combination of mechanical and electrical dampening

Qms is a mechanical dampening

And Qes is an electrical dampening.

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Just stating a rule not trying to be a mod I'll leave that up to you bro.... since you already got warned for it haha

Just trying to keep it useful before it gets locked or deleted...

2010 Mazda 3s 2.5L

Pioneer DEH-X9600BHS

Knu OFC 1/0 

SS Platinum AGM / XS Power XP750

Alpine PDX F-4 / Morel Maximo 5 + Coax 5

IA 10.1 / SSA XCON 12 

 

 

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