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General Car Audio
Center channel MTM for Logitech Z-5500.
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<blockquote data-quote="bustaplz" data-source="post: 5962947" data-attributes="member: 567655"><p>I actually put together the TL for my spare RE SR10. I did some experimenting and ended up with it being about 7.75' long and tapered from 12.5" down to ~8" diameter at the end. It's not perfect by any means and I don't have enough polyfill to really experiment with stuffing it, but the transmission line design has convinced me. It has transient response closer to a sealed box than a ported box and massive output from 28hz-45hz compared to the ported box. A 37hz tone will move things around the room and anything from 30-45 will vibrate clothes. I'm actually very suprised by how well it works, I may try to build a quality folded line with a larger driver in the future and do it right. But for something made out of cardboard and a couple pounds of duct tape, it's really amazing. I calculated the tuning and it sits right at 36-37hz(well above Fs) and I've noticed that there is a STEEP drop from 45hz-60hz and another peak a bit above that. It's very strange and has a completely different sound than I am accustomed to, but it's also got a very natural sound down low. I really didn't think a cheap 10" sub off 188w could ever exert the amount of low end force that this does.</p><p></p><p>Unfortuneatly, the Z-5500 sub amp channel is crossed over WAY too high, but I can't do a whole lot about that. I'll probably end up with a 7.1ch receiver and a good plate amp in the future so maybe I can do some more experimenting with TL designs. I just wish it wasn't so GOD **** BIG. I have the woofer end sitting in a chair, and the open end sitting on a table in the corner of my room. It's the best placement I could find besides laying it on the floor behind my desk chair. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif</p></blockquote><p></p>
[QUOTE="bustaplz, post: 5962947, member: 567655"] I actually put together the TL for my spare RE SR10. I did some experimenting and ended up with it being about 7.75' long and tapered from 12.5" down to ~8" diameter at the end. It's not perfect by any means and I don't have enough polyfill to really experiment with stuffing it, but the transmission line design has convinced me. It has transient response closer to a sealed box than a ported box and massive output from 28hz-45hz compared to the ported box. A 37hz tone will move things around the room and anything from 30-45 will vibrate clothes. I'm actually very suprised by how well it works, I may try to build a quality folded line with a larger driver in the future and do it right. But for something made out of cardboard and a couple pounds of duct tape, it's really amazing. I calculated the tuning and it sits right at 36-37hz(well above Fs) and I've noticed that there is a STEEP drop from 45hz-60hz and another peak a bit above that. It's very strange and has a completely different sound than I am accustomed to, but it's also got a very natural sound down low. I really didn't think a cheap 10" sub off 188w could ever exert the amount of low end force that this does. Unfortuneatly, the Z-5500 sub amp channel is crossed over WAY too high, but I can't do a whole lot about that. I'll probably end up with a 7.1ch receiver and a good plate amp in the future so maybe I can do some more experimenting with TL designs. I just wish it wasn't so GOD **** BIG. I have the woofer end sitting in a chair, and the open end sitting on a table in the corner of my room. It's the best placement I could find besides laying it on the floor behind my desk chair. [IMG]//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif[/IMG] [/QUOTE]
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Center channel MTM for Logitech Z-5500.
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