Subwoofer for B3S system

BMD · 17th March 2006, 08:10 PM

I just ordered all of the parts to build a pair of b3s's (zaph's design). Now I'm trying to find the parts for the subwoofer.

I have no problem starting from scratch, but I have an unused Jensen JS-800 8" subwoofer. The sound quality is awful, but for $50 I got the subwoofer, a MTM center, two TM L/R's and two M satellites. (this was before I cared about sound quality). I am pretty sure the 8" driver from the jensen is useless, but is the 100 watt plate amp still good?

I know you guys dont like using existing cabinets, but just in case i could save time, it is a 12" x 12" x 15" with .5" MDF any use?

I am looking for 8" driver recommendations, or anything that will match the b3s's. The final product is going to be used for computer speakers in a dorm room.

Thank you,

BMD

(P.S. Happy St. Patrick's Day!)

phidauex · 17th March 2006, 09:10 PM

Take a look at this thread, a mini sonotube subwoofer with the Tang Band W8-740C 8" subwoofer: TB W8-704C mini Sonosub...

It would be right up your alley. I would NOT reuse the enclosure, but the amplifier would be fine to use, and a Sonotube enclosure is not tricky to build.

Another driver to consider would be the MCM 55-2421, which is a noname 8" subwoofer with similar specs to the Tang Band (but is a little cheaper). Its been popular because of its decent specs, and low price.

peace,
sam

cotdt · 18th March 2006, 04:50 AM

why 8's? i say go for a pair Dayton RSS315HF! Should work great for a 2-way system and they can cross over very high for a 12" woofer.

BMD · 18th March 2006, 02:15 PM

Unfortunatly the #1 concern with these subwoofers is their size, followed closely by price. Right now i'm between the Tang Band W8-1363SA or the ascendant audio assassin 8. I want to spend around $50 for the driver.

peter_m · 30th December 2007, 05:19 PM

Sorry to revive this old thread but I also am finishing B3S and need to start looking at the sub... I want something cost effective, not horrible in sound quality and to be crossed high at 150hz... Any suggestions?

Should I go for a sub or a just a large woofer?

What about these?

http://www.mcminone.com/product.asp?...me=MCMProducts

http://www.partsexpress.com/pe/showd...number=264-854

http://www.partsexpress.com/pe/showd...number=295-550

http://www.partsexpress.com/pe/showd...number=295-490

http://www.partsexpress.com/pe/showd...number=295-315

http://www.partsexpress.com/pe/showd...number=295-320

EDIT: also interesting http://www.billfitzmaurice.com/T18.html

planet10 · 30th December 2007, 06:33 PM

Some of those are pricey enuff that you could be considering the CSS SDX7. We are playing with them in conjunction with the µFonken with the 3" Fostex FF85j. Our current experimental unit is, i believe, being limited by the cheap plate amp. We are going to build another to try different amps.

I'm also working on tweaking the driver for better performance.

dave

peter_m · 30th December 2007, 06:47 PM

I'm sure the more I spend, the more I get in return... but I really want to keep it low... 100$ is too much... at that price I would spend a little more for the Dayton RS 12" and a bigger amp but that would be another project all together... Keep in mind that this sub is to be matched to the 12$ Hivi B3S...

peter_m · 30th December 2007, 11:11 PM

Update... a few more options:

http://www.apexjr.com/speakerstuff.html

Eosone 12" or Apex Jr Super 8"

Ron E · 31st December 2007, 04:00 AM

Quote:

Originally posted by peter_m
Sorry to revive this old thread but I also am finishing B3S and need to start looking at the sub... I want something cost effective, not horrible in sound quality and to be crossed high at 150hz... Any suggestions?

There aren't too many (sub)woofers that _won't_ go to 150Hz. Just stay away from high inductance drivers.

IF you have B3S's you can maybe hit 100dB on a good day so you don't really need much for a sub, IMO, unless you are the type who likes to have the bass boosted 40dB above the midrange. IMO a decent 8" woofer with a 40Hz cutoff is good enough, but a 12" isn't out of the question if you just have to have 20Hz.

This isn't rocket science. You could use a Cabasse or several other types if you like the inverted dome shape of the HiVi's.

peter_m · 31st December 2007, 09:27 AM

Has anyone worked with this: http://www.mach5audio.com/product_in...84c6dab21fc73b

It looks interesting but would appreciate feedback from actual users...

or this one: http://www.edesignaudio.com/edv2/pro...products_id=29

30th December 2007, 06:33 PM	#6
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	Some of those are pricey enuff that you could be considering the CSS SDX7. We are playing with them in conjunction with the µFonken with the 3" Fostex FF85j. Our current experimental unit is, i believe, being limited by the cheap plate amp. We are going to build another to try different amps. I'm also working on tweaking the driver for better performance. dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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17th March 2006, 08:10 PM	#1
BMD diyAudio Member Join Date: Mar 2006 Location: Oneida, NY	Subwoofer for B3S system I just ordered all of the parts to build a pair of b3s's (zaph's design). Now I'm trying to find the parts for the subwoofer. I have no problem starting from scratch, but I have an unused Jensen JS-800 8" subwoofer. The sound quality is awful, but for $50 I got the subwoofer, a MTM center, two TM L/R's and two M satellites. (this was before I cared about sound quality). I am pretty sure the 8" driver from the jensen is useless, but is the 100 watt plate amp still good? I know you guys dont like using existing cabinets, but just in case i could save time, it is a 12" x 12" x 15" with .5" MDF any use? I am looking for 8" driver recommendations, or anything that will match the b3s's. The final product is going to be used for computer speakers in a dorm room. Thank you, BMD (P.S. Happy St. Patrick's Day!)

17th March 2006, 09:10 PM	#2
phidauex diyAudio Member Join Date: Jan 2006 Location: Boulder, CO	Take a look at this thread, a mini sonotube subwoofer with the Tang Band W8-740C 8" subwoofer: TB W8-704C mini Sonosub... It would be right up your alley. I would NOT reuse the enclosure, but the amplifier would be fine to use, and a Sonotube enclosure is not tricky to build. Another driver to consider would be the MCM 55-2421, which is a noname 8" subwoofer with similar specs to the Tang Band (but is a little cheaper). Its been popular because of its decent specs, and low price. peace, sam

18th March 2006, 04:50 AM	#3
cotdt diyAudio Member Join Date: Oct 2005	why 8's? i say go for a pair Dayton RSS315HF! Should work great for a 2-way system and they can cross over very high for a 12" woofer.

18th March 2006, 02:15 PM	#4
BMD diyAudio Member Join Date: Mar 2006 Location: Oneida, NY	Unfortunatly the #1 concern with these subwoofers is their size, followed closely by price. Right now i'm between the Tang Band W8-1363SA or the ascendant audio assassin 8. I want to spend around $50 for the driver.

30th December 2007, 05:19 PM	#5
peter_m diyAudio Member Join Date: May 2007	Sorry to revive this old thread but I also am finishing B3S and need to start looking at the sub... I want something cost effective, not horrible in sound quality and to be crossed high at 150hz... Any suggestions? Should I go for a sub or a just a large woofer? What about these? http://www.mcminone.com/product.asp?...me=MCMProducts http://www.partsexpress.com/pe/showd...number=264-854 http://www.partsexpress.com/pe/showd...number=295-550 http://www.partsexpress.com/pe/showd...number=295-490 http://www.partsexpress.com/pe/showd...number=295-315 http://www.partsexpress.com/pe/showd...number=295-320 EDIT: also interesting http://www.billfitzmaurice.com/T18.html

30th December 2007, 06:47 PM	#7
peter_m diyAudio Member Join Date: May 2007	I'm sure the more I spend, the more I get in return... but I really want to keep it low... 100$ is too much... at that price I would spend a little more for the Dayton RS 12" and a bigger amp but that would be another project all together... Keep in mind that this sub is to be matched to the 12$ Hivi B3S...

30th December 2007, 11:11 PM	#8
peter_m diyAudio Member Join Date: May 2007	Update... a few more options: http://www.apexjr.com/speakerstuff.html Eosone 12" or Apex Jr Super 8"

31st December 2007, 09:27 AM	#10
peter_m diyAudio Member Join Date: May 2007	Has anyone worked with this: http://www.mach5audio.com/product_in...84c6dab21fc73b It looks interesting but would appreciate feedback from actual users... or this one: http://www.edesignaudio.com/edv2/pro...products_id=29