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<blockquote data-quote="TJ Cornish" data-source="post: 82078" data-attributes="member: 162">Re: JBL SRX / QSC PL236 underpowered?The appropriate ratio of tops to subs varies wildly dependent on the genre of music and the preference of the operator.&nbsp;The 718 probably has a high-pass filter (also known as a low cut filter) at 31Hz.&nbsp; This is at the low end of the frequency range the 718 can handle.&nbsp; The crossover point would be 80Hz, 90Hz, 100Hz, etc., depending on your preferences - the high end of the range you&#039;d want your 718s to reproduce.&nbsp; As to the &quot;can they handle higher frequencies?&quot; question - must subs will happily work up to at least 300Hz with great efficiency.&nbsp; There are sound quality consequences to this (which is why crossover points are usually 80Hz - 120Hz), but you&#039;re not going to hurt the speaker.I would not assume your DriveRack PA is set up ideally.&nbsp; It might be worth your time to post your location and see if you can hire someone to help you tune and set up your system for a few bucks.</blockquote>

[QUOTE="TJ Cornish, post: 82078, member: 162"] Re: JBL SRX / QSC PL236 underpowered? The appropriate ratio of tops to subs varies wildly dependent on the genre of music and the preference of the operator. The 718 probably has a high-pass filter (also known as a low cut filter) at 31Hz. This is at the low end of the frequency range the 718 can handle. The crossover point would be 80Hz, 90Hz, 100Hz, etc., depending on your preferences - the high end of the range you'd want your 718s to reproduce. As to the "can they handle higher frequencies?" question - must subs will happily work up to at least 300Hz with great efficiency. There are sound quality consequences to this (which is why crossover points are usually 80Hz - 120Hz), but you're not going to hurt the speaker. I would not assume your DriveRack PA is set up ideally. It might be worth your time to post your location and see if you can hire someone to help you tune and set up your system for a few bucks. [/QUOTE]

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