First time designing a sub, please check my work - Page 4

SkinnyBoy · 18th August 2003, 02:41 PM

hey you're the idiot... I mean nice person... who was trying to palm those things off on ebay for $95.. lol ahum.. hello.. hehe

EDIT:
what size port did you use?

postman · 18th August 2003, 02:44 PM

Hehhe yes that was me

Bit of creative wording here and there never hurt anyone

Still a mighty fine sub for the price, considering a regular consumer would spend more than 500 on a sub of similar performance.

Didnt sell it so im making another and keeping em

edit :

Looking back on my winisd project, the box is actually 40 litres tuned to 37hz. Port was 85mmx243mm.

SkinnyBoy · 18th August 2003, 02:47 PM

hmm.. ok lol

I guess I should start saving now... lol what would people reccomend for cheapish, good mid/woofers and tweeters to match up with these "subs"?? thanx... lol I don't wanna go out and spend $30AU on a 4inch woofer when I am only spending $45 on an 8inch sub..

postman · 18th August 2003, 02:50 PM

Im pretty sure mass.com.au, has specials on vifa and peerless woofers/midranges/tweeters all the time. You can pick up some half descent drivers for like 15 each.

SkinnyBoy · 18th August 2003, 02:54 PM

thats good... but how do I know what they have on special?

postman · 18th August 2003, 04:08 PM

Theyre got a section on the site called bargain basement or something.

SkinnyBoy · 18th August 2003, 11:41 PM

you wanna make a bet? lol show me...

SkinnyBoy · 19th August 2003, 12:14 AM

I think I may have a problem (another one, not so obvious

) how can I get 100-150watts into a 4ohm speaker with +- 25 volt rails...??? assuming the amp can swing the output to within 2volts of each rail, thats a 46volt swing... into 4 ohms that eqautes to 66watts.... can't be too expensive either... and I would really like to use ICs.... ofcourse the 4ohms isn't constant, it would probably drop... lets say 3 ohms... thats still only 88watts... perhaps the amp could swing to 1 volt from each rail... 48volts on the output.... 96watts... does anything I am saying even make sense... I'm bored.. school is sooooooo boring..

18th August 2003, 02:44 PM	#32
postman diyAudio Member Join Date: Nov 2002 Location: Sydney Australia	Hehhe yes that was me Bit of creative wording here and there never hurt anyone Still a mighty fine sub for the price, considering a regular consumer would spend more than 500 on a sub of similar performance. Didnt sell it so im making another and keeping em edit : Looking back on my winisd project, the box is actually 40 litres tuned to 37hz. Port was 85mmx243mm. __________________ meh

18th August 2003, 02:50 PM	#34
postman diyAudio Member Join Date: Nov 2002 Location: Sydney Australia	Im pretty sure mass.com.au, has specials on vifa and peerless woofers/midranges/tweeters all the time. You can pick up some half descent drivers for like 15 each. __________________ meh

18th August 2003, 04:08 PM	#36
postman diyAudio Member Join Date: Nov 2002 Location: Sydney Australia	Theyre got a section on the site called bargain basement or something. __________________ meh

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18th August 2003, 02:41 PM	#31
SkinnyBoy Banned Join Date: Nov 2002 Location: Adelaide, Australia	hey you're the idiot... I mean nice person... who was trying to palm those things off on ebay for $95.. lol ahum.. hello.. hehe EDIT: what size port did you use?

18th August 2003, 02:47 PM	#33
SkinnyBoy Banned Join Date: Nov 2002 Location: Adelaide, Australia	hmm.. ok lol I guess I should start saving now... lol what would people reccomend for cheapish, good mid/woofers and tweeters to match up with these "subs"?? thanx... lol I don't wanna go out and spend $30AU on a 4inch woofer when I am only spending $45 on an 8inch sub..

18th August 2003, 02:54 PM	#35
SkinnyBoy Banned Join Date: Nov 2002 Location: Adelaide, Australia	thats good... but how do I know what they have on special?

18th August 2003, 11:41 PM	#37
SkinnyBoy Banned Join Date: Nov 2002 Location: Adelaide, Australia	you wanna make a bet? lol show me...

19th August 2003, 12:14 AM	#38
SkinnyBoy Banned Join Date: Nov 2002 Location: Adelaide, Australia	I think I may have a problem (another one, not so obvious ) how can I get 100-150watts into a 4ohm speaker with +- 25 volt rails...??? assuming the amp can swing the output to within 2volts of each rail, thats a 46volt swing... into 4 ohms that eqautes to 66watts.... can't be too expensive either... and I would really like to use ICs.... ofcourse the 4ohms isn't constant, it would probably drop... lets say 3 ohms... thats still only 88watts... perhaps the amp could swing to 1 volt from each rail... 48volts on the output.... 96watts... does anything I am saying even make sense... I'm bored.. school is sooooooo boring..

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