Mike-Hatheway
Auditioning
- Joined
- Oct 29, 2002
- Messages
- 5
Hey,
I got turned on to the Partsexpress NSB buyout speakers by this thread: hometheaterforum.com/htforum/showthread.php?s=&threadid=198386. So on impulse (can be a bad thing, I know) I bought eight of them and some tweeters in hopes of making a very cheap, decent set of what will more than likely become shop speakers. Here are the links to the drivers:
Woofers (if you can call them that )
partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=269-570
Tweeters
partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=269-702&scqty=2
The tweeters are pretty bad, I know. But I have some ELF 1.5's (no tweeter) and don't notice too much to be lacking from the music, so I figured I would just buy some cheap speakers (staying with the project theme) and see if I could integrate.
I figured I would either put these in a TMMMM or MMTMM arrangement. I came up with some manageable dimensions and found I could get a maximum box volume of 1.125 ft^3, this will be ported to around 60Hz.
At first I was not going to include a crossover of any kind, but seeing as I've never designed my own crossover (only built them from schematics included in designs) I thought that this would be the perfect project to start the learning process with, something with few reprecussions if I screw it up.
My main questions are these. Any input on the design I have come up with? Any suggestions on what to change about it? Second, as far as a crossover goes what do you guys reccomend (remember these are meant to be a very cheap project, I have much larger things on my plate at the moment that require most all of my funds). Third, I think I figured out how to wire these to a 7.2 Ohm load, but I could be completely off base, I will include a picture If I can, so you guys can tell me if I'm doing it right.
Here's a link to the picture:
web.engr.oregonstate.edu/~hathewam/post.GIF
Ok, here's the very crappy picture of the wiring. Basically I split the woofers up into groups of two. Two 8 ohm woofers wired in parallel, and two in series. The two sets of woofers are then wired in parallel with each other giving I think a 3.2 ohm load. This is then wired in series with the 4 ohm tweeter to give a 7.2 ohm load. Does this look right? Thank you very much for any input or advice you can give.
Mike
Argh, no links until a certain post count I see. Sorry people but you'll have to copy past the links :/.
I got turned on to the Partsexpress NSB buyout speakers by this thread: hometheaterforum.com/htforum/showthread.php?s=&threadid=198386. So on impulse (can be a bad thing, I know) I bought eight of them and some tweeters in hopes of making a very cheap, decent set of what will more than likely become shop speakers. Here are the links to the drivers:
Woofers (if you can call them that )
partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=269-570
Tweeters
partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=269-702&scqty=2
The tweeters are pretty bad, I know. But I have some ELF 1.5's (no tweeter) and don't notice too much to be lacking from the music, so I figured I would just buy some cheap speakers (staying with the project theme) and see if I could integrate.
I figured I would either put these in a TMMMM or MMTMM arrangement. I came up with some manageable dimensions and found I could get a maximum box volume of 1.125 ft^3, this will be ported to around 60Hz.
At first I was not going to include a crossover of any kind, but seeing as I've never designed my own crossover (only built them from schematics included in designs) I thought that this would be the perfect project to start the learning process with, something with few reprecussions if I screw it up.
My main questions are these. Any input on the design I have come up with? Any suggestions on what to change about it? Second, as far as a crossover goes what do you guys reccomend (remember these are meant to be a very cheap project, I have much larger things on my plate at the moment that require most all of my funds). Third, I think I figured out how to wire these to a 7.2 Ohm load, but I could be completely off base, I will include a picture If I can, so you guys can tell me if I'm doing it right.
Here's a link to the picture:
web.engr.oregonstate.edu/~hathewam/post.GIF
Ok, here's the very crappy picture of the wiring. Basically I split the woofers up into groups of two. Two 8 ohm woofers wired in parallel, and two in series. The two sets of woofers are then wired in parallel with each other giving I think a 3.2 ohm load. This is then wired in series with the 4 ohm tweeter to give a 7.2 ohm load. Does this look right? Thank you very much for any input or advice you can give.
Mike
Argh, no links until a certain post count I see. Sorry people but you'll have to copy past the links :/.