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Smallish cabinet for Jbl GT3-12
Smallish cabinet for Jbl GT3-12
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Old 19th June 2019, 08:19 PM   #11
GM is offline GM  United States
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Quote:
Originally Posted by TroelsM View Post
As far as I understand, it would be difficult to cover the whole 50-180Hz with a 4th order BP?

kind regards TroelsM
Your < two octaves is doable, just not with this driver, especially at high SQ in the allotted bulk as you've found out. You want a lower Qt driver with a 50 EBP.

The attached ~177 L sim looks fabulously flat, so probably won't perform well in a typical HIFI/HT app, but the high Qt requires a high compression ratio [CR] to control its relatively weak motor, so might 'grenade' if given much power and why one should avoid high Qt drivers in BP4 alignments.

GM
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File Type: txt JBL_GT3_BP4.txt (1.0 KB, 3 views)
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Old 20th June 2019, 06:22 AM   #12
TroelsM is offline TroelsM  Denmark
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Quote:
Originally Posted by BP1Fanatic View Post
In my model, I still reached 180hz with a 130hz lowpass in Filter Wizard.
Yes, the output did reach that high. Sorry. I was thinking about something else.

Kind regards TroelsM
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