Site Links
Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
Quick Links
Categories
Please review the site Rules, Terms of Service, and Privacy Policy at your convenience. Rules, TOS, Privacy
Get familiar with the reaction system: Introducing the Reaction System
SLS-830667 as a woofer in a 3 way?
Has anyone used this as a woofer in a 3 way?
I’m planning to cross over to a coaxial, probably 200-300Hz. Box volume is 20L; and it can be sealed or vented. But since this project involves enlarging a pre-existing woofer hole; it’s a one way street once I do that.
Wondering if others have used this woofer. What was your experience?
Comments
I haven't but I did just recently get a pair with the intentions of building a stand mounted 3-way. It seems well suited to a crossover point up to 600+ hz, so it may be able to pair to a dome mid that I have on the shelf. Good luck with your plans!
In my novice experience, the SLS line is a great all arounder. I particularly have experience with the 830946 and it does fantastic sub bass to midbass, if i remember ~400-500. I would think the 8” variant would be just as great, especially in the band you are intending.
Plugging the numbers into WinISD.. 20liters seems rather small for it in a vented arrangement. Giving an F3 of 44-47hz and an upper bass hump 2-3db depending where you tune the port. Sealed yields an F3 52.5hz
Crossing over that low opens up other options.
GRS 8SW-4HE in 20 liters Sealed yields an F3 of 40hz. Vented, tuned to 25hz yields an F3 of 29hz with a hump under 1.5db. Heck in that arrangement the GRS is gaining SPL in the region the Peerless is dropping out.
I know F3 isn't everything, The Peerless could plain sound better (I don't know) and the GRS isn't exactly eye candy by comparison. Then you have 4 vs 8ohm
The GRS is very flat out to over 1K and anchors a 3-way just fine. However, the Peerless does have a shorting ring so should theoretically have lower distortion. It also has higher advertised Xmax.
Still, a pair of the GRS wired in series solves the impedance concern and will offer greater output capability than the Peerless for just a few dollars more all-in.
It is good having options. I had to restrain myself from buying a couple of the Peerless.
We are talking about the 8SW-4HE not 8SW-4 right? HE has rated linear xmax of 10.8mm vs the peerless 8.41mm.
I remember you measured 8SW-4 extending past 1k, but I wasn't aware the HE would do that.
I was talking about the plain Jane grs 8", not the HE. Sorry for the confusion!
Just circling back on this- I acquired a pair and took some in box measurements- here is some data-
Sensitivity on the low side, on the upside seems suitable for a sealed box, and can handle a LR2 low pass at up to 400Hz.
Not dissimilar to when Klang & Ton tested it almost 20 years ago. That’s some kind of amazing consistency…
Hello. Would you be willing to share some details on this build? I am interested in using this woofer for a similar application
This driver was used as a drop-in for a spare test enclosure I had laying around to meet a true midrange coaxial that could only go down to ~400Hz. But after full baffle step compensation, and only 1 woofer per side I wasn't happy with the low voltage sensitivity 81dB/2.83V for a passive design, and the sealed box bass extension.
If you wanted a sealed box I feel that the 830668 10" is the sweet spot of the SLS range.
For 20L sealed or vented I would go with something else eg. B&C 8BG51
I now believe that a single 8" woofer for a sealed box offers offers limited advantages over a 6.5" vented box...which may explain the ubiquity of the latter.
Thank you for your response! Did your use case not give you much room gain? I wouldn't expect to have to do full bsc in most instances. I am hoping to pair them with TC9FD, which are already pretty low sensitivity, so I'm ok with a few db. TC9FD also has pretty limited power handling, so I won't need much output from the 830667. For mating to the TC9, it seems like a great match to me, considering I would like something sealed. Besides low sensitivity and limited bass, were there any other drawbacks in your experience? Also curious if you tried higher crossover points. I see in the graphs you provided it has rising distortion at 700Hz, so I'm a bit wary, but would be nice to take some of the load off of the tc9
@bryguy I got most of the way through a build with those two (+a tweeter). But something about it I just haven't been impressed with. So I have yet to actually button it up. I realy should though. I suspect it is an issue with the hard corners on the side causing some diffraction effects in the midrange. That and I can only wire up one of these big prototype crossovers at a time so the bass doesn't get augmented by the other speaker.
https://diy.midwestaudio.club/discussion/2380/peerless-based-8-3-way-build/p1
I'm crossing them at about 500hz. Resulting distortion is plenty below the 40db down point from my measurements so seems to be a non-issue down there.
Nice build! I'll definitely keep an eye on that thread if you ever resume development. If not I might be interested in buying some of those drivers off you
>
A low pass of 400Hz is fine.
My room is around 3000cu ft. And my listening distance is over 10ft. I like to keep my speakers clear of walls. So I prefer close to full BSC.
I'm also accustomed to twin 12" woofers, so there's that. So yeah, hardly a far comparison.