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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
1,302 posts
 

Get a pair of rythmik FM8 8inch dual driver subs and limit your full range speaker to 250 hz. Your full range driver will stop crying and thank you from the bottom of its heart.

erik_squires
16,021 posts
 

Hi OP,

Doppler distortion is a real thing, but usually the room interferes more.  It's worth understanding if your bass is smooth enough before going much further.

The quick answer is you can put a high pass filter in front of your amp, which is just a single capacitor at the right value for the amp impedance. 

I think 250 Hz is a little too high to cross a main speaker at.  Around 100 Hz is usually the upper bound, 60 Hz the lowest I'd normally recommend, but the idea that adding a subwoofer AND utilizing a high pass filter on your mains is sound, especially if you have room modes which you want to use an EQ to tame.  This way you put the EQ in line with the sub only.

Also, check out the AM Acoustics room mode simulator which will help you understand how bad your room modes are as well as give you ideas for the best placement.

deep_333
1,302 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.

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