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Dayton Audio RSS315HF-4 12" Reference HF Subwoofer 4 Ohm
what is the optimal enclosure size for ported sub?
i have this sub in a 5.1 cf box w/ 4 by 11 port. the combonation of the box & sub is too heavy. looking for something smaller like 3 cf or so. if you know the answer, can you give me the box size and port to use for optimal enclosure size
For this driver in a 3.0ft³ ported enclosure, your 4" port should be roughly doubled in length. Approximately 21-22" according to BassBox 6 Pro, referenced below for your convenience.
Date published: 2011-07-10
Would swapping this speaker for the original found in a Dayton Sub-120 150 watt be a resonable upgrade for better sound?
Yes, it would. I believe this subwoofer box is sealed, and in it the RSS315HF-4 will be at a Qcb of approximately .770, with an F3 of about 36Hz. -6db at about 29Hz, and -10db at about 23Hz.It would be a bit under powered with this sub's amp, but it's an efficient subwoofer driver, and will likely play at a level more than good enough for most of your music and movie requirements.I own this driver myself, and find it very musical.
Date published: 2013-07-05
HO or HF for 2 cu ft sealed cabinet with SA240 amp?
I have the amp and cabinet, now I don't know which subwoofer would be a better choice. It will be used for movies and TV in our theater room which is 12'x21'.
Definitely the HF woofer. And definitely stay with sealed. The HO woofer doesn't look good in the airspace or in a sealed cabinet. The HO also needs a lot more power to get moving.This driver looks very good in 2 cu ft sealed and is flexible enough to move up or down a good bit (depending on if the amp will be inside the box taking up space). The response stays smooth down to about 1.6 cu ft and still looks good with as much as 2.5 cu ft. Two feet appears to be pretty close to the sweet spot though and with the amp you are running it will produce a lot more (and better) sound that one might expect.Looks like a good choice to me.
Date published: 2013-05-27
Open or closed for best musical response?
I will use this unit in a 3-way system where I would like to cross it over at around 250Hz, which is a bit higher than usual I suppose.To make this driver sound as "musical" as possible, is it best to go for a closed enclosure or is there no difference really with a ported enclosure besides the lower frequency extension?
Assuming an adequately large sealed enclosure (let's say larger than 1.8ft, 2.3-2.8 would be ideal) vs. a vented enclosure tuned to 20hz (this would want to be big, 4-6 cubic feet) you get the obvious extension of low end - which is pretty significant below 40hz.The other effects of a ported enclosure (vs. sealed) will be port response phase, and the group delay between the driver and the enclosure or port's resonance. Down to around 38hz the group delay is actually better (lower) on a large vented enclosure - owing to the larger size of the enclosure and its "leak" (the port) - but this delay starts getting long under 30hz. Most wouldn't consider that a problem, because the duration of the wave itself is fairly long at these frequencies so relative to wave duration, group delay doesn't actually increase much at all (%)Phase, again remains superior on a ported configuration to below 28hz, down past that is an obvious phase shift - not one that will affect musicality.In summary, if I had 4 or more cubic feet to play with I'd definitely choose a large, low velocity port tuned around 21hz , because it would exhibit cleaner response above 40hz and drastically more response below 40hz with very little coloration.
Date published: 2013-10-22
Would you recommend as a woofer
I may use this driver as a woofer rather then a sub-woofer. It would be crossed over at 300Hz. Would you recommend it?
300hz is well within it's usable range, I think they'll work great.
Date published: 2012-07-31
Whats the Big Difference?
Is there really a big difference between this and the Dayton Audio RSS315HO-4 12" Reference HO Subwoofer 4 Ohm?
The HF (high fidelity) subwoofers feature a two layer voice coil that has very low inductance and a lighter cone for music applications.The HO (high output) subwoofers feature a thicker cone and a four layer voice coil for high power home theater applications. They also work very well in small sealed enclosures.
Date published: 2011-05-08