Hi,
I am using the LX-mini speakers as surrounds in my home theater. I would like to build a center channel with the Seas Prestige FU10RB H1600-04 4" Full Range plus an open baffle midrange about 6-7 inches.
I would like recommendations for an open baffle midrange 6-7” for 80hz to 1000hz. Impedance is not a concern.
I will use the Lx-mini crossover sold in the diyaudio store and the 80hz high pass built into my preamp/processor. I know it won’t exactly match the midrange, but
I can optimize that in the future.
I can’t use the Lx-mini Seas L16RN-SL (H1480) 6" Aluminum Cone Woofers because I don’t have room for the enclosures.
I am using the LX-mini speakers as surrounds in my home theater. I would like to build a center channel with the Seas Prestige FU10RB H1600-04 4" Full Range plus an open baffle midrange about 6-7 inches.
I would like recommendations for an open baffle midrange 6-7” for 80hz to 1000hz. Impedance is not a concern.
I will use the Lx-mini crossover sold in the diyaudio store and the 80hz high pass built into my preamp/processor. I know it won’t exactly match the midrange, but
I can optimize that in the future.
I can’t use the Lx-mini Seas L16RN-SL (H1480) 6" Aluminum Cone Woofers because I don’t have room for the enclosures.
Hmm, 'says' it's suitable for a 10 L cab/80 Hz, so if that 10 L was unfolded to a flat baffle reshaped to a 7" width too big?
GM
GM
Would you please help me understand “unfolding to a flat baffle”. I am not experienced with open baffle design.
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Open baffle center channel doesn't make any sense. Usually center channel speakers are located above or below the TV and near or against the same wall. That serves to make the voices appear to coming from the TV picture.
On the other hand open baffle speakers need to be moved way out into the room in order to sound right. At least 3 feet, and more is better.
Even worse, open baffle will expand the sound stage and make it seem larger than life. And that's exactly the opposite of what you want from a center channel. You want it to localize the voices so they seem to come realistically from the people in the picture.
On the other hand open baffle speakers need to be moved way out into the room in order to sound right. At least 3 feet, and more is better.
Even worse, open baffle will expand the sound stage and make it seem larger than life. And that's exactly the opposite of what you want from a center channel. You want it to localize the voices so they seem to come realistically from the people in the picture.
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Don't the surround speakers do that anyway, wouldn't you end up with a larger than life soundscape with the voices always coming from a central position? I don't know if that's preferred or not.
LX-minis are cardioid in the midrange bandwidth, peaking around 700 to 1,000Hz, I believe. See the Linkwitz LXmini design page.
The 4" is in phase with the 6" to the front and out of phase in the rear. The combination of the two drivers operating out of phase cancel to the rear throughout the crossover frequency range (e.g. noise cancelling.)
The destructive frequency interference also creates a narrow horizontal pattern to the front -- somewhat like a waveguide?
An open baffle radiation pattern is different. It is equal to the front and the back. Consequently, OBs can be more sensitive to room placement -- you normally pull them out in to the room away from the walls.
So, is your center channel going to be placed 3 feet in front of your TV? If not, you might not want an OB. Instead, you might want cardioid. Or you might want fully enclosed. Or you might want to mount it flush into your wall.
For a center channel, you might want to build a Linkwitz Pluto converted into a standard enclosure (aka, woofer assisted wideband or a two way with lower crossover frequency at 1,000Hz) then place it on your wall above, below, or even to the side of your TV. The Ventriloquism Effect will take care of moving the voices to the center of the screen.
Decide where you want to position your center channel then that will help you decide which enclosure style to use based on the adjacent boundaries.
The 4" is in phase with the 6" to the front and out of phase in the rear. The combination of the two drivers operating out of phase cancel to the rear throughout the crossover frequency range (e.g. noise cancelling.)
The destructive frequency interference also creates a narrow horizontal pattern to the front -- somewhat like a waveguide?
An open baffle radiation pattern is different. It is equal to the front and the back. Consequently, OBs can be more sensitive to room placement -- you normally pull them out in to the room away from the walls.
So, is your center channel going to be placed 3 feet in front of your TV? If not, you might not want an OB. Instead, you might want cardioid. Or you might want fully enclosed. Or you might want to mount it flush into your wall.
For a center channel, you might want to build a Linkwitz Pluto converted into a standard enclosure (aka, woofer assisted wideband or a two way with lower crossover frequency at 1,000Hz) then place it on your wall above, below, or even to the side of your TV. The Ventriloquism Effect will take care of moving the voices to the center of the screen.
Decide where you want to position your center channel then that will help you decide which enclosure style to use based on the adjacent boundaries.
