GM has a good idea to suspend the tweeter except the G3 outside dimensions are 2.91"W x 6.61"H x 3.54"D. It is a huuuuuuge tweeter.
Another possibility for the OP is to suspend the G3 over one of his TangBand W8-2145 as it is 8.77" dia.
Another possibility for the OP is to suspend the G3 over one of his TangBand W8-2145 as it is 8.77" dia.
If I went the suspension route, I will go with a smaller dome. Choices, choices, suspending the G3 is going to cover much of the mids. A different dome wont blend with my mains and surrounds.
On a related note, I came up with this schematic for a crossover. I am a novice at crossover design.
Any ideas ?
On a related note, I came up with this schematic for a crossover. I am a novice at crossover design.
Any ideas ?
An externally hosted image should be here but it was not working when we last tested it.
Oops!
Obviously I didn't look, but it still can be suspended over a 6x9 if an elliptical cone phase plug made of clay or similar is stuck to its rear, just may need some digital delay. Ditto over the TB except conical.
GM
Obviously I didn't look, but it still can be suspended over a 6x9 if an elliptical cone phase plug made of clay or similar is stuck to its rear, just may need some digital delay. Ditto over the TB except conical.
GM
DOH! Ribbon tweeters like the Aurum cantus G3 have a wide horizontal dispersion, but a very limited vertical dispersion. For the best high frequency reproduction, it is critical that the G3 is horizontal at ear height. Not at "stomach level" below a HT flat panel.
SO, one final pitch...... 12" high box with [trimmed-faceplate SB29RDC tweeter] on top of the [no-whizzer W8-2143], with a clever box design which allows both F3=66Hz superior-transient sealed volume plus simple conversion to F3=36 deeper-bass Q=0.7 ported volume.
Cut the whizzer cone off of one W8-2143 and purchase one $43 SBacoustics SB29RDC dome tweeter which has proven performance with a LR4 1,500Hz crossover required for the W8. To reduce height, cut off a portion of the SB29 plastic face plate and, if necessary, mount toward the top-side of the W8-2143 in order to fit into the 12" high box.
Xsim used Frd and Zmd for large box as a first guess.
SO, one final pitch...... 12" high box with [trimmed-faceplate SB29RDC tweeter] on top of the [no-whizzer W8-2143], with a clever box design which allows both F3=66Hz superior-transient sealed volume plus simple conversion to F3=36 deeper-bass Q=0.7 ported volume.
Cut the whizzer cone off of one W8-2143 and purchase one $43 SBacoustics SB29RDC dome tweeter which has proven performance with a LR4 1,500Hz crossover required for the W8. To reduce height, cut off a portion of the SB29 plastic face plate and, if necessary, mount toward the top-side of the W8-2143 in order to fit into the 12" high box.
Xsim used Frd and Zmd for large box as a first guess.
Attachments
I am really lost here, are you suggesting two W8's one in a sealed cabinet and one in a vented cabinet ?
Absolutely! Obviously, it would need to be tilted as required to get the desired coverage angle.
When used, the CC speaker is the most critical one in a HT system plus at least the mains ideally need to match in the speech BW, so ideally both the tweeter and mid driver in the mains need to be used or at least the tweeter when it's a ribbon, WG/horn or similar, so without a WG on the SB29 to get a 'close enough' polar response to the G3 this seems a poor choice overall and even then I find it hard to believe that any sort of dome tweeter will emit the kind of 'heart attack fast' presentation of a ribbon or proper compression horn.
GM
I saw a wooden ladle this morning. It would be quite trivial to mount a small tweeter in the front part of the ladle and mount the handle part on top of the speaker. This would make me a cheap coaxial. I tried an experiment last night, by mounting the Tweeter in front of the W8's using a clamp. While the imaging is great and the speaker blends well with my mains, the speaker also sounds muffled. Like someone has a cupped hand in front of it. I believe this is due to the large size of the tweeter itself covering ~ 40% of the woofer surface. For a coaxial to work in my case, I will probably need a mini tweeter like the Dayton AMT. I ordered a pair of SB29 via madisound. If they dont work, they can always be unloaded on ebay.
Placing the tweeter on side with a highpass at 2500 and the W8 running full range, the sound is quite a bit cleaner, but the soundstage is all over the place.
Placing the tweeter on the side and crossed over to the woofer at 1500 sounds even better, however the soundstage is still strange. On top of that, certain parts seem "shouty" or over emphasized. I dont have a way to test/plot a response curve. It just seems vocals are a wee bit emphasized in the wrong way. Cutting the wheezer cone is probably the answer to that. But I wont be able to reattach it if it didnt sound good.
A bit about my current speaker placement. My home theater is in a room with an open ceiling. The ceiling is around 18ft tall and a projector screen covers half of the wall from top. My home made Av rack is about 28 inches tall and 68 inches wide. The center speaker sits on top of this AV rack. Adding 12 inches of speaker height (MTM laying side ways) the tweeter is directly in line with the listeners ears. I think I have the ideal placement for a center speaker. But it also seems like I am able to pick up on the tiniest issues with the center speaker.
Placing the tweeter on side with a highpass at 2500 and the W8 running full range, the sound is quite a bit cleaner, but the soundstage is all over the place.
Placing the tweeter on the side and crossed over to the woofer at 1500 sounds even better, however the soundstage is still strange. On top of that, certain parts seem "shouty" or over emphasized. I dont have a way to test/plot a response curve. It just seems vocals are a wee bit emphasized in the wrong way. Cutting the wheezer cone is probably the answer to that. But I wont be able to reattach it if it didnt sound good.
A bit about my current speaker placement. My home theater is in a room with an open ceiling. The ceiling is around 18ft tall and a projector screen covers half of the wall from top. My home made Av rack is about 28 inches tall and 68 inches wide. The center speaker sits on top of this AV rack. Adding 12 inches of speaker height (MTM laying side ways) the tweeter is directly in line with the listeners ears. I think I have the ideal placement for a center speaker. But it also seems like I am able to pick up on the tiniest issues with the center speaker.
- Status
- Not open for further replies.