Has anyone run midbass down to 130hz, then subs???

[djn]

I have been designing a pair of midbass horns and to get the look and size I want I end up with no lower than 130hz. I have two great subs and two fair HT subs. All can run up to 180hz. So, will crossing over at 130hz then to subs still give me good sounding bass??? Cheers.

[TheSeekerr]

Probably. You'll be able to localise bass that high, though, so it may be necessary to have the subs physically close to the mains to get good integration.

[djn]

Right now, I run the two front subs in the corners but I can move them out. I just talked to a friend that has a Behringer 2496 three way active crossover and he will bring it over has it has a function to cut the midbass at 130hz and I can run the subs up to 130hz. I'll see how it sounds.

[doug20]

I have done this with my PHL1120/Neopro5i speaker for a couple of years. It has a natural roll off at around 200Hz and I have a bass bin that runs from 60Hz to 200Hz, I could run that bass bin lower if I ported it but I also have a good subwoofer system.

The DCX is perfect for that sort of setup.

[bjorno]

Hi djn,all

If you cross over below 250 Hz (250 Hz at – 20 dB level or more compared to the mains) and the subs are frontally located, IME, no localization que is expected provided the bass boxes mechanically built quality are good, but then there is more to consider:

b

[doug20]

That is an interesting picture, do you have a link so I can read it?

[bjorno]

Hi doug20,

Time for me to go enter my bed...

AES E-Library: Vertical Localization of Sound from Multiway Loudspeakers

AES E-Library: Localization and Image Size Effects for Low Frequency Sound

b

[doug20]

Thanks, too bad I have to pay for them

[bentoronto]

With lively tweeters, all the music seems to come from them.

I've been happy with 140 Hz steep electronic crossovers and mixed bass for 45 yrs.

About the experiments in localization, that's very different than music listening. Easy enough to localize woofers when they are the only source and there's no easy way to control from artifacts (the tiniest whiff of higher-frequency sound will immediately let you point to the woofer source - if nothing else is playing).

Whatever the downside of mixing bass and/or putting the woofer(s) somewhere besides under the midrange, you are still far better off developing a great single woofer than splitting your cash two ways.

Scientific footnote: few people know that you have some power of localization with ONE ear alone.

[markus76]

Originally Posted by djn

I have been designing a pair of midbass horns and to get the look and size I want I end up with no lower than 130hz. I have two great subs and two fair HT subs. All can run up to 180hz. So, will crossing over at 130hz then to subs still give me good sounding bass??? Cheers.

Not a certain speaker concept but a room optimized setup of (multiple) subwoofers will give you good sounding bass. See http://harman.com/EN-US/OurCompany/T...ions/13680.pdf

Best, Markus