Peerless 830586 8" SLS Shielded Woofer
Was: $35.00 EA
Save 31%
Special Price: $24.00 EA (1-3)
$21.68 EA (4+)
Sku 299-246: In Stock
Perfect woofer for equalized sealed box designs. Stamped steel frame with generous ventilation and minimal airflow restriction. 1-1/2" two-layer copper voice coil with 1" winding. Shielded magnet, 4 ohm impedance. Buyout, limited quantities. Specifications: *Power handling: 125 watts RMS/250 watts max *VCdia: 1-1/2" *Le: 0.97 mH *Impedance: 4 ohms *Re: 3.4 ohms *Frequency response: 45-2,000 Hz *Fs: 45 Hz *SPL: 85 dB 1W/1m *Vas: 0.72 cu. ft. *Qms: 6.19 *Qes: 0.96 *Qts: 0.83 *Xmax: 8 mm *Dimensions: A: 8-3/16", B: 7", C: 4-1/4".
Premium sculpted stamped steel chassis
Vented pole piece and under-spider venting
Treated long-fiber paper cone with rubber edge
Oversized felt dust cap
2-layer front gasket
Bumped backplate permits maximum linear excursion
Magnetically shielded
Was: $35.00 EA
Save 31%
Special Price: $24.00 EA (1-3)
$21.68 EA (4+)
Sku 299-246: In Stock
Perfect woofer for equalized sealed box designs. Stamped steel frame with generous ventilation and minimal airflow restriction. 1-1/2" two-layer copper voice coil with 1" winding. Shielded magnet, 4 ohm impedance. Buyout, limited quantities. Specifications: *Power handling: 125 watts RMS/250 watts max *VCdia: 1-1/2" *Le: 0.97 mH *Impedance: 4 ohms *Re: 3.4 ohms *Frequency response: 45-2,000 Hz *Fs: 45 Hz *SPL: 85 dB 1W/1m *Vas: 0.72 cu. ft. *Qms: 6.19 *Qes: 0.96 *Qts: 0.83 *Xmax: 8 mm *Dimensions: A: 8-3/16", B: 7", C: 4-1/4".
Premium sculpted stamped steel chassis
Vented pole piece and under-spider venting
Treated long-fiber paper cone with rubber edge
Oversized felt dust cap
2-layer front gasket
Bumped backplate permits maximum linear excursion
Magnetically shielded
Peerless 830586 8" SLS Shielded Woofer
Was: $35.00 EA
Save 31%
Special Price: $24.00 EA (1-3)
$21.68 EA (4+)
Sku 299-246: In Stock
Perfect woofer for equalized sealed box designs. Stamped steel frame with generous ventilation and minimal airflow restriction. 1-1/2" two-layer copper voice coil with 1" winding. Shielded magnet, 4 ohm impedance. Buyout, limited quantities. Specifications: *Power handling: 125 watts RMS/250 watts max *VCdia: 1-1/2" *Le: 0.97 mH *Impedance: 4 ohms *Re: 3.4 ohms *Frequency response: 45-2,000 Hz *Fs: 45 Hz *SPL: 85 dB 1W/1m *Vas: 0.72 cu. ft. *Qms: 6.19 *Qes: 0.96 *Qts: 0.83 *Xmax: 8 mm *Dimensions: A: 8-3/16", B: 7", C: 4-1/4".
Premium sculpted stamped steel chassis
Vented pole piece and under-spider venting
Treated long-fiber paper cone with rubber edge
Oversized felt dust cap
2-layer front gasket
Bumped backplate permits maximum linear excursion
Magnetically shielded
FYI, A TL simulation:
b
Attachments
As supplied, the Qes is too high, but I think if I knock off the bucking magnet, things may improve....
In theory, Qes will increase...........
GM
As supplied, the Qes is too high....
Maybe, maybe not, only one way to know for sure........
GM
Attachments
I thought the bucking magnet *decreased* the BL slightly, and that you get in increase in the field when you dispense with it. But certainly not by enough to make a speaker more horn-friendly....
IME, adding a magnet either did nothing or slightly lowered Qes, ergo taking it off may increase it, but I agree that it probably won't be enough to audibly affect the design. That said, there was a small Audax that could be had either way and the shielding dropped it almost 20% IIRC, but I've never seen anywhere this much on the 8"-up drivers I've messed with and finally settled for using cold rolled steel (CRS) sheet in the cab to shield larger, more powerful drivers.
GM
Well, we'll find out soon enough. I will measure a driver, then knock off the bucking magnet and remeasure. If they're not useful without the magnet, I'll send them out to live on the shelf of useless woofers I have out in the shop....
Might be a few more days though - I'm plenty busy with other projects.
Might be a few more days though - I'm plenty busy with other projects.
Maybe, maybe not, only one way to know for sure........
GM
Oh - I agree that it was worth a look - that is why I bought them.
This driver is not bad by any stretch, it just has its limitations.
Well, we'll find out soon enough. I will measure a driver, then knock off the bucking magnet and remeasure. If they're not useful without the magnet, I'll send them out to live on the shelf of useless woofers I have out in the shop....
Might be a few more days though - I'm plenty busy with other projects.
I thought I was the only one with a speaker addiction....
My name is littlemike, and it's been 3 days since my last speaker purchase....
HI MIKE !!
I thought I was the only one with a speaker addiction....
My name is littlemike, and it's been 3 days since my last speaker purchase....
HI MIKE !!
Hi Jim.
It hasn't been three days.....
There are more boxes coming too - but that is another project.
PA-style tapped horn bass on the cheap - if it all works out. In simulation-land with fairy-tale parameters, I get >100 dB with a watt from 30 Hz to >120 Hz from a pair of $20 12" drivers, and the model says the drivers reach excursion limits at just about the same time as thermal limits.
Downsides? It is a BIG enclosure for a pair of 12s, and it all hinges on manufacturer parameters currently - I'll get actual driver measurements soon (probably Tuesday). I'll measure the M&K's at the same time.
In theory, Qes will increase...........
GM
And - theory would be correct. Measurements attached.
So - in an nutshell, leave the magnets on...
Attachments
Turns out that the specs were reasonably close to the listed ones. The driver is a Parts Express buyout, item number 299-246, which is a Miller & Kreisel badged Peerless 830586 8" SLS Shielded Woofer.
They'll work well enough in a tapped horn - with or without the magnet. They don't take a lot of power before excursion gets silly when asked to play low, and the cabinet gets pretty big. I've got other stuff to do, so I will not be playing with them any time soon.
They'll work well enough in a tapped horn - with or without the magnet. They don't take a lot of power before excursion gets silly when asked to play low, and the cabinet gets pretty big. I've got other stuff to do, so I will not be playing with them any time soon.
I wonder how these compare to the other MCM 8" that everybody seem to use as a cheap option for building front loaded and tapped horns - as far as being used in a horn is concerned. I heard these SLSs are great in car doors though, if you can fit one...
Completely different drivers - the MCM has more motor and a much lower Fs than the SLS. The SLS is a great IB driver, and will likely wind up in the doors of my truck
Completely different drivers - the MCM has more motor and a much lower Fs than the SLS. The SLS is a great IB driver, and will likely wind up in the doors of my truck
Yeah I hear you, the MCM does have much more motor and xmax, but thats the thing, I always thought high FS drivers are better suited for horn loading, yet everybody on a budget seems to base their bass horns on the MCM. I think I have read somewhere that FS should be about a little less than double the freq you want the horn to be tuned at?
Anyway, right now the dayton 8" on half price looks much more interesting to play with :
Dayton SD215-88 8" Shielded DVC Subwoofer | Parts-Express.com
Yeah I hear you, the MCM does have much more motor and xmax, but thats the thing, I always thought high FS drivers are better suited for horn loading, yet everybody on a budget seems to base their bass horns on the MCM. I think I have read somewhere that FS should be about a little less than double the freq you want the horn to be tuned at?
Anyway, right now the dayton 8" on half price looks much more interesting to play with :
Dayton SD215-88 8" Shielded DVC Subwoofer | Parts-Express.com
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i cant believe you recommenced that dayton driver... seriously
Yeah I hear you, the MCM does have much more motor and xmax, but thats the thing, I always thought high FS drivers are better suited for horn loading, yet everybody on a budget seems to base their bass horns on the MCM. I think I have read somewhere that FS should be about a little less than double the freq you want the horn to be tuned at?
Anyway, right now the dayton 8" on half price looks much more interesting to play with :
Dayton SD215-88 8" Shielded DVC Subwoofer | Parts-Express.com
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Look at the frame on that driver - those will be really hard to front-mount.
May or may not be an issue, but worth knowing ahead of time.
@90210
To each their own, not everyone needs 140 dB from their subs, and sometimes a $15 driver is just right for the application. It is a lot easier to learn and experiment when the cost of the driver leaves a bit of change from a $20.
your not alone,
me and loud speakers have a serious obscene relationship, and my stuff is overwelming my garage, and house. but my small home theater is pretty bad ***. And i dont even have to use the dual 18 cabs in the garage , lol. peace. just too much fun. gotta strap the house to the foundation soon.
me and loud speakers have a serious obscene relationship, and my stuff is overwelming my garage, and house. but my small home theater is pretty bad ***. And i dont even have to use the dual 18 cabs in the garage , lol. peace. just too much fun. gotta strap the house to the foundation soon.
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- would these be ok in a tapped horn or folded, any ideas, i got two the price is good