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Limiting a full range driver

My speakers, Reference 3A NEFES, have 2 full range 8" drivers. My question; is it better to limit the frequencies to 100 Hz and higher. My thinking is that the lower, sub 100 Hz signals interfere with the midrange too much with their larger cone movements. Or, is there no benefit to cutting out these frequencies?

koestner
deep_333
2,444 posts
 

I think 250 Hz is a little too high to cross a main speaker at. Around 100 Hz is usually the upper

You didn’t know?? The Rythmik FM8 is no ordinary sub. It is a special sub designed to wipe the tears/alleviate the struggles of his full range driver.

koestner OP
740 posts
 

I am considering a miniDSP SHD Studio, all digital with no converting to analog, and then sending out to 2 DACs (OKTO DAC 8 to main speakers / Schiit Modius to my 2 15" passive subs). Amplifiers are Benchmark AHB2 for mains and a Crown Class D (750 WPC) to the subs. All on AES/EBU and balanced.

erik_squires
17,554 posts
 

Well, the usual recommendation to avoid subwoofer localization and enhance the ability to put it elsewhere is to keep the low pass filter somewhere below 120 Hz.  I haven't heard any other methods.

erik_squires
17,554 posts
 

OP:  Sounds like a good idea, but, this is key, be ready to measure your results.  Once a speaker/subwoofer gets into a room throw the specs out the window and pretend you know nothing about the performance of the speaker, because without measurements you really don't.  The room changes everything so while I think your approach to using digital miniDSPs is sound I also think you'll need to carefully gauge the setting and for that you'll need a mic and software.

onhwy61's avatar
onhwy61
5,440 posts
 

It's an 8" driver and it can handle but low frequencies without distress.  If you really want to set a low limit you should aim for a 60Hz or less.  Do you really want your 15" subs handling the upper bass region?

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