Anyone have experience with they SBA SB15 5x8 woofer?
https://www.madisoundspeakerstore.c...ics-sb15sfcr39-4-5x8-paper-cone-woofer-4-ohm/
I am considering a narrow (e.g. appox 6-7" wide) tower 3 way, with an SBA tweeter at 4k, and the Scanspeak 10F for the mid down to around 300. The SB15 seems like a great option for the low end to fit nicely on the front panel, and 89db sensitive for the 4ohm version.
I love the long racktrack design. It reminds me of the Linn Keltiks I heard back in 1999. Those speakers still live in my memory.
That dip at 50hz tho. Is that something to be concerned about?
https://www.madisoundspeakerstore.c...ics-sb15sfcr39-4-5x8-paper-cone-woofer-4-ohm/
I am considering a narrow (e.g. appox 6-7" wide) tower 3 way, with an SBA tweeter at 4k, and the Scanspeak 10F for the mid down to around 300. The SB15 seems like a great option for the low end to fit nicely on the front panel, and 89db sensitive for the 4ohm version.
I love the long racktrack design. It reminds me of the Linn Keltiks I heard back in 1999. Those speakers still live in my memory.
That dip at 50hz tho. Is that something to be concerned about?
I used it in a WAW with the 10F in a build for a friend. I didn't spend a whole lot of time with the finished build but it had a nice amount of thump even in ~20L sealed. I'm doing another build with the 5x8 as the woofer in a 3way, 41.5L ported this time, but it's still a flat pack.
The 50Hz dip is in all the SB measurements.
Below is the WAW design. I don't have any good pictures from the build. This is the best I had, long before they were done obviously.
The 50Hz dip is in all the SB measurements.
Below is the WAW design. I don't have any good pictures from the build. This is the best I had, long before they were done obviously.
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Thank you! Wonderful insight.
Btw, I am envious of your collection of drivers in that picture to play with and compare. Are those Relevators? How did the 10F+SB5x8 compare in contrast to those other speakers?
Also, that is a very interesting crossover configuration. It will take me some time to mentally process what is going on there. Much more complex than a simple 2nd order Bessel/Butterworth/LR. I am still at the beginners stage for crossover design. What led you down this route, vs a simple 2nd order bessel?
Like I said, I didn't spend a whole lot of time with the finished WAW. I was kind of rushing to get them done before Christmas.
The Revelator line is great and you're not going to get that kind of performance out of the SB PFC line but the PFC drivers are killer for the money imo. By comparison the Revelators pull so much nuance out of source material and can multi-task really well.
In my experience comparing ScanSpeak to SB
ScanSpeak (Revelator) drivers are more punchy and realistic.
SB (and Satori) are very smooth.
The crossover is 2nd order acoustically, it started as LR2 at 600Hz and moved a little as I adjusted everything.
If you're just starting:
1 - When people talk about crossover slopes, they mean acoustic slopes not electrical slopes.
2 - The driver's responses look very different once they're on a baffle. The responses get peaky, especially in the 800-1200Hz range when the baffles are skinny. The crossover needs to deal with this.
3 - Impedance is not constant 4 or 8 ohms
4 - Because of 1-3 the crossover component values are not textbook values.
The Revelator line is great and you're not going to get that kind of performance out of the SB PFC line but the PFC drivers are killer for the money imo. By comparison the Revelators pull so much nuance out of source material and can multi-task really well.
In my experience comparing ScanSpeak to SB
ScanSpeak (Revelator) drivers are more punchy and realistic.
SB (and Satori) are very smooth.
The crossover is 2nd order acoustically, it started as LR2 at 600Hz and moved a little as I adjusted everything.
If you're just starting:
1 - When people talk about crossover slopes, they mean acoustic slopes not electrical slopes.
2 - The driver's responses look very different once they're on a baffle. The responses get peaky, especially in the 800-1200Hz range when the baffles are skinny. The crossover needs to deal with this.
3 - Impedance is not constant 4 or 8 ohms
4 - Because of 1-3 the crossover component values are not textbook values.
Yeah, for this experiment with the 10F, I cant justify the cost of the Revelators. The SBA drivers seem to be great price performance options. These speakers will just be for fun.
For my main speakers, I love a good standard two-way. With the Revelators, I just wish they offered a 17W (170mm) to fit my existing cabs (which use a version of the vifa 17 / now Ss Classic 6.5").
Thank you for the rest of your comment as well. Those points definitely help me think about my design. I really do need to order a measurement mic.
I used the 8 ohm version in a little woofer for a sub out on a micro system. Better than expected and went deep enough for the application.
For sealed I used Vb=16 litres and vented Vb=23 litres Fb=37Hz.
For sealed I used Vb=16 litres and vented Vb=23 litres Fb=37Hz.
I use a pair of those in my car, the front speakers where a generous 6x9 and with some mod I manage to get those sb in place.
For what is worth they sound much better than every car 6x9 I've used before.
For what is worth they sound much better than every car 6x9 I've used before.