hello
i have a pair of jbl 150-4c in hart field cabinet, uhmm i can not get much low bass out of it , i try to figure out how to improve the bass section , let say , around 500hz cross
i cannot get much parameter or spec of its driver
any suggestion ,
crossover rebuilt/mod , cabinet improve/mod
are welcome and considered
thank you for your help and opinions
i have a pair of jbl 150-4c in hart field cabinet, uhmm i can not get much low bass out of it , i try to figure out how to improve the bass section , let say , around 500hz cross
i cannot get much parameter or spec of its driver
any suggestion ,
crossover rebuilt/mod , cabinet improve/mod
are welcome and considered
thank you for your help and opinions
You could just give them to me. 😛
Maybe use the device from Dayton that measures its parameters via USB.
Maybe use the device from Dayton that measures its parameters via USB.
Hello
Here is a link I can't think of another site to get more info. How are they placed in the room?? They are a corner horn and need to be there. Also consider their age that driver in original good condition is very rare so do not over drive it by trying to get much output below 40hz. Get a sub for LFE. Do you have any pictures of the driver??
Rob🙂
HARTSFIELD
Here is a link I can't think of another site to get more info. How are they placed in the room?? They are a corner horn and need to be there. Also consider their age that driver in original good condition is very rare so do not over drive it by trying to get much output below 40hz. Get a sub for LFE. Do you have any pictures of the driver??
Rob🙂
HARTSFIELD
Drivers for a similar horn gain BW all have similar enough basic T/S specs, so this one in theory is close enough, hence you might get 35 Hz with good room gain, otherwise ~40 Hz is about it, same as the Klipsch.
http://www.jblproservice.com/pdf/Thiele Small Parameters/Theile Parameters.pdf
MODEL FS QTS QMS QES VAS EFF PE XMAX RE LE SD BL MMS FLUX
E145 35 0.25 6 0.26 274.7 4.3 150 7.11 5.7 1.6 0.090 16.1 55 0.97
As previously noted, a high SQ sub system is required to fill in below this point, i.e. highly damped to ~match the horn's high damping or servo controlled.
That, or sell it/them for big $$$ and build/buy new and skip using folded corner horns as they get really big really quick below ~40 Hz unless truncated for woofer array loading.
GM
http://www.jblproservice.com/pdf/Thiele Small Parameters/Theile Parameters.pdf
MODEL FS QTS QMS QES VAS EFF PE XMAX RE LE SD BL MMS FLUX
E145 35 0.25 6 0.26 274.7 4.3 150 7.11 5.7 1.6 0.090 16.1 55 0.97
As previously noted, a high SQ sub system is required to fill in below this point, i.e. highly damped to ~match the horn's high damping or servo controlled.
That, or sell it/them for big $$$ and build/buy new and skip using folded corner horns as they get really big really quick below ~40 Hz unless truncated for woofer array loading.
GM
I agree with selling them for $$$. You will never appreciate them like a true collector and you will get similar result from the cheaper drivers with less history, and stronger glue.
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