Reply to thread

Message

<blockquote data-quote="Papermaker85" data-source="post: 8578299" data-attributes="member: 572595">if you have a woofer you can test it out plot frequency response gras/ excursion/actual input power and how the various parameters contribute to your measurements.For example understanding how QMS and CMS as well as KMS curves(the stiffness over stroke) affect frequency response both above and below tuning and how the driver mechanically unloads when you change tuning port area and box size.take for example these two driversDUAL 1 | DUAL 2FS&nbsp; &nbsp; 32.8 HzRE&nbsp; &nbsp; 0.9|1.8QMS&nbsp; &nbsp; 6.61QES&nbsp; &nbsp; 0.30QTS&nbsp; &nbsp; 0.29MMS&nbsp; &nbsp; 326gCMS&nbsp;&nbsp; 0.718SD&nbsp; &nbsp; 810cm^2VAS&nbsp; &nbsp; 66.1 lSPL&nbsp; &nbsp; 90.8dBBL&nbsp; &nbsp; 20.1 N/A | 28.4N/AXMAX 34mm (One Way)RMS&nbsp; &nbsp; 2500WDC sounds XL Sd791.00 cm²Vas&nbsp; &nbsp; 66.02 litersCms&nbsp; &nbsp; 0.07 mm/NFs&nbsp; &nbsp;&nbsp; 34.3BL&nbsp; &nbsp; BL 22.73 N/ARe&nbsp; &nbsp; 3.98 OhmLe&nbsp; &nbsp; 5.2mHQms&nbsp; &nbsp; 16.55Qes&nbsp; &nbsp; 0.516Qts&nbsp; &nbsp; 0.5Xmax&nbsp; &nbsp; &nbsp; 26 mm89.0 dBi can&#039;t get the correct format!!</blockquote>

[QUOTE="Papermaker85, post: 8578299, member: 572595"] if you have a woofer you can test it out plot frequency response gras/ excursion/actual input power and how the various parameters contribute to your measurements. For example understanding how QMS and CMS as well as KMS curves(the stiffness over stroke) affect frequency response both above and below tuning and how the driver mechanically unloads when you change tuning port area and box size. take for example these two drivers DUAL 1 | DUAL 2 FS 32.8 Hz RE 0.9|1.8 QMS 6.61 QES 0.30 QTS 0.29 MMS 326g CMS 0.718 SD 810cm^2 VAS 66.1 l SPL 90.8dB BL 20.1 N/A | 28.4N/A XMAX 34mm (One Way) RMS 2500W DC sounds XL Sd 791.00 cm² Vas 66.02 liters Cms 0.07 mm/N Fs 34.3 BL BL 22.73 N/A Re 3.98 Ohm Le 5.2mH Qms 16.55 Qes 0.516 Qts 0.5 Xmax 26 mm 89.0 dB i can't get the correct format!! [/QUOTE]

Verification