Need help with speaker using 3 Hi-Vi B3S's

The Paulinator · 30th January 2006, 08:16 AM

It's a long story, but for purely cosmetic purposes I need to make a few speakers, each using 3 HiVi B3S drivers, and nothing else. Anybody have any good suggestions on how I can make that work and sound good? I obviously only want to run one of them all the way to the top octave, but I'm not as experienced with more complicated crossover systems.

cotdt · 30th January 2006, 08:32 AM

I tried it... didn't work very well because the midbass is very distorted and bass is nonexistant. But pass 300hz it is an amazing driver, especially for the price. Consider it a midtweeter rather than a fullranger.

The Paulinator · 30th January 2006, 04:25 PM

Actually, I forgot to mention that I will be using them in a home theater setup with a subwoofer, with an active crossover probably set at 120hz, just to keep them out of that troublesome reigon.

The Paulinator · 30th January 2006, 04:27 PM

Did you use any filtering when you did it, like the notch filters that Zaphaudio recommends, or just straight?

cotdt · 30th January 2006, 04:29 PM

Quote:

Originally posted by The Paulinator
Actually, I forgot to mention that I will be using them in a home theater setup with a subwoofer, with an active crossover probably set at 120hz, just to keep them out of that troublesome reigon.

OK, that will work. I thought you didn't have a sub

sreten · 30th January 2006, 05:05 PM

Hi,

the easiest way to use 3 drivers is to implement baffle
step compensation and crossover at the same time.

Two drivers in parallel are +6dB compared to one driver,
so use a simple 1st order series c/o, the frequency being
determined by baffle width.

so two drivers || for mid bass, one driver for mid & treble.

You'll also need the 8K notch filter for the mid/treble driver.

/sreten.

30th January 2006, 08:16 AM	#1
The Paulinator diyAudio Member Join Date: Jan 2002 Location: Spfld, OR	Need help with speaker using 3 Hi-Vi B3S's It's a long story, but for purely cosmetic purposes I need to make a few speakers, each using 3 HiVi B3S drivers, and nothing else. Anybody have any good suggestions on how I can make that work and sound good? I obviously only want to run one of them all the way to the top octave, but I'm not as experienced with more complicated crossover systems.

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30th January 2006, 08:32 AM	#2
cotdt diyAudio Member Join Date: Oct 2005	I tried it... didn't work very well because the midbass is very distorted and bass is nonexistant. But pass 300hz it is an amazing driver, especially for the price. Consider it a midtweeter rather than a fullranger.

30th January 2006, 04:25 PM	#3
The Paulinator diyAudio Member Join Date: Jan 2002 Location: Spfld, OR	Actually, I forgot to mention that I will be using them in a home theater setup with a subwoofer, with an active crossover probably set at 120hz, just to keep them out of that troublesome reigon.

30th January 2006, 04:27 PM	#4
The Paulinator diyAudio Member Join Date: Jan 2002 Location: Spfld, OR	Did you use any filtering when you did it, like the notch filters that Zaphaudio recommends, or just straight?

30th January 2006, 05:05 PM	#6
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, the easiest way to use 3 drivers is to implement baffle step compensation and crossover at the same time. Two drivers in parallel are +6dB compared to one driver, so use a simple 1st order series c/o, the frequency being determined by baffle width. so two drivers \|\| for mid bass, one driver for mid & treble. You'll also need the 8K notch filter for the mid/treble driver. /sreten.