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Silver Flute W17RC38-08 vs SB Acoustics SB16PFCR25-8
I haven't modeled these out to directly compare, but I thought I'd ask for any input/preferences. Preferably if you have used or heard both, but even just opinions based on parameters is appreciated.
For use as dual woofers in a slim TMWW 3-way, probably crossed over around 350 Hz. F3 of 40Hz or lower is target.
Which woofer for a slim TMWW
- Silver Flute W17RC38-08 or SB16PFCR25-8?9 votes
- Silver Flute W1744.44%
- SB16PFCR55.56%
Comments
Can the silver flute even meet your f3 goal with that low Qts? Or do they tend to measure differently than specs?
Per Madisound a pair of the SBs can do 39hz f3 in 50liters. Should be able to slim it up a little and still get around 40hz.
I just modeled them and I don't think so.
I had looked at Fs and Vas quickly and posted the tread and poll, but now that I model them it looks like F3 of 55Hz is about the best I could do. For a 2-way that would be fine, and I hear these sound really nice, but to me there is no point in a TMWW three-way that only has an F3 of 55Hz (even if using 6.5 inch woofers).
My SB16PFCR's (two-way) measured pretty close to spec. I have them in 20L with an F3 below 45Hz.
I voted SB for mostly the same reason. The SB is a solid driver that has a clear path to hit the 40 Hz target. I haven't heard the Silver Flute in a long time. It's always been considered a good value and easy to work with, more as a midwoofer in a small, vented two way than as a woofer in a 3-way. The main advantage I see with the Silver Flute is the larger voice coil diameter, but the better ventilated frame of the SB might wash that out.
If I was looking for a budget driver playing in the range you are specifying, I would probably pick the Dayton DC160 over either of those.
Sehlin Sound Solutions
Yeah, Drew was right. See the post right above yours, we posted at pretty much the same time.
My tweeter and midrange will be SB Acoustics, so I was looking to keep the woofers from Madisound.
The Peerless 830657 is a sleeper candidate.
Sehlin Sound Solutions
The SB16 is a really nice sounding mid-woofer, but while I've used it in bass reflex test builds I don't know what its F3 is.
Paul Kittinger kindly designed me a two way MLTL with calculated F3 of 38Hz. It was for the 'square' version but the specs look the same. Only the swear word output - not in the specs - should be different to the round one.
I just made one test box out of scrap to mess around with, but the crossover (someone else's design) I used hadn't been designed for that cabinet. I imagine that the 'real' F3 would depend on stuffing the cabinet exactly to Mr K's specifications, which I probably didn't do.
Geoff
Modeled the SB (WinISD) and was able to get 40hz f3 with 1.5cf (42.5l). Should make for a rather compact looking tower.
830657 will do 40hz for half the price since it is on sale at Madi right now, but needs near 1cf larger enclosure to do it.
Yes, that is the goal. I have made TMWW with dual 8's and dual 10's but not the trendy "slim" towers with 6-1/2's.
You have these in your collection already?
I have a pair of SB16PFC on hand and do not have any Silver Flutes.
I'll go contrary and vote for the SF. I know they wont dig as deep, but my experience with the cheap SB has been less than impressed.
Two things I have read that make me want to at least buy the SF and test them...
The Qts is likely to measure higher than mfg specs (but this is from a really old thread, like 2012)
I can probably maybe decrease Fs/increase Qts a little with some kind of cone treatment (the Wet Look or Mod Podge).
One the bright side, buying a pair of $36 woofers to measure isn't a deal breaker - it's not like I'm trying to decide between Accutons and Ellipticors.
I do really like the SB16PFC in my two-way. One of my best speakers is where I sliced the SB16PFC - as practice on a $36 woofer before I sliced my PM180s.
I really like the silver flute. I used it in a bookshelf build, and really like it. I got a 42hz f3 in a .6 cubic foot box per my measured specs. I would be another vote for the silver flute.
Do you still have those measured specs available?
I've never used them myself but have heard them (one of Arlis' projects?) and thought they sounded good.
@a4eaudio , I have 2 measurements below. I can't remember how much break in time I gave them. I also added in the WINISD response of both. Both were .6 cubic feet, one was tuned to 39hz and the other tuned to 40hz.
I did these about 4 years ago. I still have them in my garage. I do know they will do high thirty hertz in room.
I've used both and prefer the sq of the Flutes.
I had Madisound do a LEAP crossover for the SF 6.5 and a buyout SEAS tweeter. That was 20 years ago when I was just getting into this hobby. They have very little BSC (maybe 2 dB) because I was too green to even know what BSC was. But excluding that, I've always thought they sound much better than the price of the drivers. I also have the 4 ohm versions in my car doors for the past 8 years and they have held up surprisingly well.
Any chance you have measured T/S parameters sitting around? If actuals are more like Johnny5jz than mfgs, then these might work. I'd love to use them, as that would be a little more unique than SBA.
Sorry, I don't.