I'm looking for a 8-10 inch woofer that will be working in active separate bass module crossed between 200-600 hz depending on swappable mid-high modules and go down to at least f3 40 hz.
The goal is to achieve fast,musical bass that is dynamic at the lowest listening levels. I guess im looking for a driver that has high Qms , low Qts and low Mms ?
So far i've found following drivers for bass reflex enclosure :
SB Acoustics SB23NRXS45-8 ( paper cone)
SB Acoustics SB23NbACS45-8 = SB23NACS45-8 ( alu cone )
SB Acoustics 8” SB20PFCR30-8 = SB20PFC30-8 ( paper cone )
wavecor WF223BD01/02
SEAS PRESTIGE H1252-08 L22RNX/P
SEAS CA22RNY
SEAS CA22RNX
SEAS L22RN4X/P
Seas CD22RN4X
Dayton Audio RS225P-8
Dayton Audio RS225-8
for sealed enclosure :
SEAS CA26RFX
L26RFX/P
SB_Acoustics 12" SB34NRX75-6
SB_Acoustics 12" SB34NRXL75-8
Peerless SLS 10
DAYTON AUDIO RS270-8 10
Could someone that has exerience with these drivers make a brief comparison between them and tell me which one would be the best ? Im especilly interested in SB23 paper vs aluminum. Also will a bigger and heavier
driver in sealed enclosure have better and faster bass at low volume than lightweight driver in BR enclosure provided they have same f3 ?
Some people say SBA woofers are fast and some say the opposite. Which is true ?
The goal is to achieve fast,musical bass that is dynamic at the lowest listening levels. I guess im looking for a driver that has high Qms , low Qts and low Mms ?
So far i've found following drivers for bass reflex enclosure :
SB Acoustics SB23NRXS45-8 ( paper cone)
SB Acoustics SB23NbACS45-8 = SB23NACS45-8 ( alu cone )
SB Acoustics 8” SB20PFCR30-8 = SB20PFC30-8 ( paper cone )
wavecor WF223BD01/02
SEAS PRESTIGE H1252-08 L22RNX/P
SEAS CA22RNY
SEAS CA22RNX
SEAS L22RN4X/P
Seas CD22RN4X
Dayton Audio RS225P-8
Dayton Audio RS225-8
for sealed enclosure :
SEAS CA26RFX
L26RFX/P
SB_Acoustics 12" SB34NRX75-6
SB_Acoustics 12" SB34NRXL75-8
Peerless SLS 10
DAYTON AUDIO RS270-8 10
Could someone that has exerience with these drivers make a brief comparison between them and tell me which one would be the best ? Im especilly interested in SB23 paper vs aluminum. Also will a bigger and heavier
driver in sealed enclosure have better and faster bass at low volume than lightweight driver in BR enclosure provided they have same f3 ?
Some people say SBA woofers are fast and some say the opposite. Which is true ?
SB_Acoustics 12" SB34NRXL75-8
-best >400 Hz. (..though 600 Hz is still OK.)
It's a stunningly good driver (..even if it is a 12" and not one of their 10"s - which aren't as good), but it requires a fair bit of volume to get the right compliance and desired resulting sound.
SB Acoustics SB34NRXL75-8 | HiFiCompass
If you want something that's subjectively "faster" (transient "snap"), then look to more efficient drivers with similarly low Qe. (..and the problem there is spl-limitations because they usually have lower x-max and of course higher Fs.)
-best >400 Hz. (..though 600 Hz is still OK.)
It's a stunningly good driver (..even if it is a 12" and not one of their 10"s - which aren't as good), but it requires a fair bit of volume to get the right compliance and desired resulting sound.
SB Acoustics SB34NRXL75-8 | HiFiCompass
If you want something that's subjectively "faster" (transient "snap"), then look to more efficient drivers with similarly low Qe. (..and the problem there is spl-limitations because they usually have lower x-max and of course higher Fs.)
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This IMO is an arguement in favour of a 4-Way, using a big subwoofer to handle those frequencies below 80Hz, more so now that plate amplifiers are reasonably priced, and there can be the added bonus of digital manipulation etc:
thanks for responses . I got SB23NRXS45-8 so far. Next i'll want to try the alu version as it's capable of going lower about 5 hz than paper. I would love to try the 12 inch one sealed but i cannot afford such a large cabinet in my current room , 50 litres is as far i can go.
Hi,
What Qe should not be reached to keep the transcient/snap feeling you talk about ScottG, please ?
Same conclusion with active amp. ?
An experienced diyaudio fellow advised me for near needs than the poster a 8" & 31 Fs on the datasheet with my limited budget but has a high Qe ? Will it be a snail ? : Seas P21RE/P H0942-08 Woofer. H0313 2015 remake
What Qe should not be reached to keep the transcient/snap feeling you talk about ScottG, please ?
Same conclusion with active amp. ?
An experienced diyaudio fellow advised me for near needs than the poster a 8" & 31 Fs on the datasheet with my limited budget but has a high Qe ? Will it be a snail ? : Seas P21RE/P H0942-08 Woofer. H0313 2015 remake
or horn a 3" lcone ike I would like to acheive (if I suceed to draw a horn according diyaudio advices)... SCANSPEAK 10FF/8425G00, best bargain ever but limited spl at Xmax (so need MTM or a horn/waveguide)
..it's not just Qe, it's also efficiency (or rather sensetivity). In particular look to higher force Bl drivers with lower mass.
In this respect there is no "limit" per se. You could have a driver like the Eminence Delta 15B with a *Qe of about .7 but with an average 97 db at 150 Hz with a 14 ohm load - that's very "snappy". Note that it's Mms is about 64 grams BUT it's a 15" driver so for its Sd it's a very low mass driver. There is a price though, very low linear excursion and Fs that doesn't extend low.
https://www.parts-express.com/pedocs/specs/290-419--eminence-delta-15b-spec-sheet.pdf
In addition to all of this is the Vas and the type of enclosure and its volume for that type of enclosure (larger volume is better, regardless of enclosure type). Finally, there is the way the amplifier interacts with the amplifier. IF it's a low-output impedance amplifier (typical solid-state) then you'll want series LCR to flatten the driver's in-box impedance at resonance.
*and because it has such a high Qe - Vas is high, requiring a VERY large enclosure.
Same conclusion with an active amp.
That Seas unit is not a great driver for this quality. 😱 I won't be a "snail" though - IF Mms is near 20 grams for an 8" then that's not to bad. (..and while I very much like the reverse roll surround, this is a quality I'd look for in a midrange.)
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diyiggy:
How high in freq. do you need to go with this driver? (..and what sort of low-pass?) Also, will it be active? UK supplier?
I *might* have a good suggestion for you.
How high in freq. do you need to go with this driver? (..and what sort of low-pass?) Also, will it be active? UK supplier?
I *might* have a good suggestion for you.
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Is it for me ? If yes : +F3: 750/800 hz BUT if I can horn the 3" mid I already have (87 db/2.83V there -8 ohms). If I can horn it it could be lower F3. The mid I already have is the SS 10F8424G00. It basicly need a horn or a waveguide to a spl reenforcment : if a horn can be designed then I will go towards such 15" à la Faital Pro but if I use it raw, I would like max 40 liter box included stuffing 20% rising volume. Hence the cheap Seas (don't want to spend that much for a 3 W monitor).
..bummer.
My suggestion would get you up to as much as 200 Hz. ..BUT it's inexpensive (even in the UK) and has a lot of "punch" for a fairly small volume enclosure. BEST if used ACTIVE (and it's 4 ohms) and 8".
Might pair nicely with the Seas unit though (..Seas as a midbass-midrange driver), as a sub <100 Hz. Probably many other drivers that would work for the midbass-midrange as well.
My suggestion would get you up to as much as 200 Hz. ..BUT it's inexpensive (even in the UK) and has a lot of "punch" for a fairly small volume enclosure. BEST if used ACTIVE (and it's 4 ohms) and 8".
Might pair nicely with the Seas unit though (..Seas as a midbass-midrange driver), as a sub <100 Hz. Probably many other drivers that would work for the midbass-midrange as well.
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