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What do you think of this SB34NRX75-16 open baffle woofer?
So, I know very little about open baffle woofers but have been trying to learn for the last few weeks. This woofer is intended for open baffle use - low Fs, high Qts and pretty high sensitivity (86db but at 16ohms clearly intended to be used in pairs). I don't find much on the typical forums so I don't expect anyone has actually heard one, but based on T/S parameters, frd and zma do you think this is a particulalry good driver for open baffle? Good but not worth the price? Or nothing special anyways? Any comments/opinions appreciated!
https://www.madisoundspeakerstore.com/approx-12-woofers/sb-acoustics-sb34nrx75-16-12-woofer-16-ohm/
Comments
Not worth the price compared to some car audio woofers.
I used a pair of Beyma 12BR70s ($155 each @US Speaker) in an open back design and was quite happy with the results https://usspeaker.com/beyma 12BR70-1.htm
You might also look at the SB Audience open baffle woofers. The 15 looks great on paper -
https://www.madisoundspeakerstore.com/sb-audience-pro-sound/sb-audience-bianco-15ob350-15-open-baffle-woofer/
Not worth the price. All the above mentioned are on point.
I think I'd go with the SB Audience 15" that Tom linked. If your room is a smaller to normal sized listening room I think one 15" per side should be quite nice. For reference the listening room at DIY Iowa is 3 times larger than what I consider normal. If your room is substantially larger you may need a pair per side. Since their Qts isn't very high I think active XO and EQ is your friend.
A good comparison is SD times xmax. High qts helps with the roll off for passive alignments. You can plug the SD and xmax into Linkwitz spl_max.xls to do comparisons. Hot set up imo is 6 of these per side https://www.parts-express.com/GRS-15PF-8-15-Paper-Cone-Foam-Surround-Woofer-292-415?quantity=1
But I'm shooting for 100 dB at 30 Hz
Thanks for all the input everyone. I won't try to design an OB speaker until late 2023/24 so will read up on a lot and have time to figure out a driver. [ @PWRRYD - yeah, you knew I was thinking of OB because of those sweet speakers of Hifiside's in Iowa.) The reason I asked about the SB34's is that there is a quad of them on eBay for $295 a pair which is about 40% off and $147.50 a piece. If the response was that they looked great, although maybe pricey, then I'd consider jumping on the deal.
That definitely makes them a better choice, at that price. Still, no replacement for displacement.
What are some car audio woofers with good amounts of Vd and higher Qts suited for sealed enclosures or OB?
GRS 12SW-4
29.6 Hz Fs
0.98 Qts
8.5 mm xmax
$33.23/each (Qty 4)
Two per side in an H frame could yield some nice OB bass if the room isn't huge.
(mini hijack)
I picked up 4x Celestion 15"s for cheap a while ago:
Fs - 50.4hz
Qts - .57
Xmax - 3.5mm
Thinking of using them with some W8-2145s to try out OB.
low xmax.. Any chance this might work ok in a small room with 2x per side?
By that point I might be dabbling with a minidsp hd anyway.
Most car audio subs are low Q, which lend themselves to active setups where you can EQ the crap out of them. As a bonus, they're usually built to take a beating.