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1 Sub or 2 for X-Over at 80hz
1 Sub or 2 for X-Over at 80hz
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Old 6th February 2018, 11:18 AM   #21
bentoronto is offline bentoronto  Canada
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1 Sub or 2 for X-Over at 80hz
Back to the OP question. Funny thing, took me a decade before going to stereo because I felt I'd rather have a single high quality speaker rather than two medium quality speakers for stereo.

Likewise, since there's no loss in playing a mixed-bass signal, maybe one large, low-playing sub would be better than two compromise subs?

B.
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Old 6th February 2018, 11:22 AM   #22
globalplayer is offline globalplayer  Germany
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Sure.
But I would want 2 anyway.
In case I would blow one I still have a "spare".
Also I could listen to those old stereo "bass" mixed records like intended.
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Old 6th February 2018, 12:49 PM   #23
DonVK is offline DonVK  Canada
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I use 2 subs, that I've tried crossed at 80Hz-100Hz at various times (currently 90Hz). They are different designs (BR, BP6) and different sizes (10", 12"). Both are using the same mono signal and I can't tell where the drivers are, its omnidirectional.

Two subs will provide more even bass in your room if they are setup properly. I have measured it and walked around to hear it. IMO 2 subs are a better than a single larger sub, and they can be mono.

Last edited by DonVK; 6th February 2018 at 12:51 PM. Reason: stereo
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Old 6th February 2018, 01:10 PM   #24
scottjoplin is offline scottjoplin  Wales
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Ideally the subs should be within 1/4 of the wavelength of the crossover frequency from the main speakers, in your case just over 1 metre. Although at such a low frequency it probably won't matter that much
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Old 6th February 2018, 01:39 PM   #25
DonVK is offline DonVK  Canada
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I would agree from acoustics principle.

However LF in a room is hard to control and when I played around with phase and sometimes phase correction (FIR) I heard very little difference. I don't seem to be sensitive to it.
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Old 6th February 2018, 01:46 PM   #26
scottjoplin is offline scottjoplin  Wales
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Yes, it's just to minimise interference at crossover, but at that frequency the room has more of an influence with odd phases all around
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Old 6th February 2018, 02:08 PM   #27
DonVK is offline DonVK  Canada
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I have wondered if the "evenness" that I experience is actually multiple waves disoriented in various ways from the room and the mic /ear is averaging them so phase is less important than frequency.

Last edited by DonVK; 6th February 2018 at 02:11 PM. Reason: not random in stochastic manner, but various from geometry
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Old 6th February 2018, 02:51 PM   #28
scottjoplin is offline scottjoplin  Wales
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Probably. I had my WAW set up crossed at 130Hz LR4 and measured a dip there at my listening position but couldn't hear one. Was the mic registering something at one point in space, but my two ears were hearing something else?
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Old 7th February 2018, 12:54 PM   #29
Think is offline Think  Netherlands
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1 Sub or 2 for X-Over at 80hz
Quote:
Originally Posted by tribute View Post
Hi, I want to add a sub or maybe two to my system crossing over a say 80hz. At this frequency can you still define stereo. If not I should be able to get away with one sub, however if you can still hear stereo then I guess I need 2. Cheers
2 small subs will sound better then 1 big one and always play them mono. As far as I know, the only usefull usage of stereo subs are really big live events. YouTube
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Old 7th February 2018, 01:46 PM   #30
lsiberian is offline lsiberian  United States
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2 small subs will sound better then 1 big one and always play them mono. As far as I know, the only usefull usage of stereo subs are really big live events. YouTube
Just remember it's a lot easier to upgrade 1 big sub to 2 big subs than 2 small subs to 2 big ones.
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