Hi all...
By looking at the TS parameters, How can we estimate how much EQ (low end boost) a sealed subwoofer driver can handle??
Let's say a 12" sealed subwoofer has an F3 of 30hz.
By applying EQ we try to boost the low end and try to push the F3 down to 25hz or even 20hz.
But how to estimate how much low-end boost a driver can withstand?? What TS parameters decide it ?? Is it possible to simulate this EQ in softwares like winisd or Bass Box 6 etc ??
Any suggestions are greatly appreciated.
Thanks In advance!!
Audfrknaveen
By looking at the TS parameters, How can we estimate how much EQ (low end boost) a sealed subwoofer driver can handle??
Let's say a 12" sealed subwoofer has an F3 of 30hz.
By applying EQ we try to boost the low end and try to push the F3 down to 25hz or even 20hz.
But how to estimate how much low-end boost a driver can withstand?? What TS parameters decide it ?? Is it possible to simulate this EQ in softwares like winisd or Bass Box 6 etc ??
Any suggestions are greatly appreciated.
Thanks In advance!!
Audfrknaveen
That would probably be the rated input power (Pe) and Xmax.
Power handling also has a time component. You can put 1kW into a tweeter for a few milliseconds, for example.
For each octave that you wish to reduce the corner frequency using boost (like the LT, etc.) you will need 12dB more power (12dB is 4 times more power) to EQ the response up to the same level (SPL).
For each octave lower you wish to go, the driver will need 4 times the excursion to reach the same SPL level. For example, a 12 inch driver at 50Hz must move about 3mm to produce 100dB SPL at 1m, but at 25Hz it must move 12mm to produce 100dB.
Here is an online excursion calculator:
Piston Excursion calculator
Power handling also has a time component. You can put 1kW into a tweeter for a few milliseconds, for example.
For each octave that you wish to reduce the corner frequency using boost (like the LT, etc.) you will need 12dB more power (12dB is 4 times more power) to EQ the response up to the same level (SPL).
For each octave lower you wish to go, the driver will need 4 times the excursion to reach the same SPL level. For example, a 12 inch driver at 50Hz must move about 3mm to produce 100dB SPL at 1m, but at 25Hz it must move 12mm to produce 100dB.
Here is an online excursion calculator:
Piston Excursion calculator
Slight correction: +3dB is double the power, so +12dB will be 16x power. 4x voltage.
Chris
Hi Chris...thanks for the correction, I understood which direction I have to think.
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Dear GM the link you shared is immensely usefull. Thank you so much for the support !!!
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Whatever little I learnt is from generous people in forums like these. Whatever basic speakers or subwoofers I made its all because of help from nice people around. Thankful to all of you for my entire life !!