rigma Posted January 16, 2007 Share Posted January 16, 2007 Doc, did you ever finish this design? I have a spare K400 and a center like you are looking at would work fine in my set up. I can not fit a LaScala on top of the TV, but could this design. rigma Quote Link to comment Share on other sites More sharing options...
DrWho Posted January 16, 2007 Author Share Posted January 16, 2007 I never got dimensions back on the Altec horn - so "no"... But really - the design is effectively finished. The geometry of the cabinet doesn't matter as long as the internal volume is maintained and the drivers are mounted as close to each other as possible. The only other consideration is that you keep the internal port mouth away from boundaries inside the cabinet. If you have measuring equipment available, then I would cut the ports too long - which will put the tuning point too low. And then you can shorten at will to account for any unpredicted behavior. I suppose you could do this by ear too. I'm not good at drawing designs, but I suppose I could whip something up...I might get around to it later tonight or tomorrow. Quote Link to comment Share on other sites More sharing options...
rigma Posted January 16, 2007 Share Posted January 16, 2007 I never got dimensions back on the Altec horn - so "no"... But really - the design is effectively finished. The geometry of the cabinet doesn't matter as long as the internal volume is maintained and the drivers are mounted as close to each other as possible. The only other consideration is that you keep the internal port mouth away from boundaries inside the cabinet. If you have measuring equipment available, then I would cut the ports too long - which will put the tuning point too low. And then you can shorten at will to account for any unpredicted behavior. I suppose you could do this by ear too. I'm not good at drawing designs, but I suppose I could whip something up...I might get around to it later tonight or tomorrow. Doc, I have Altec 511 horns also which may be better anyway due to the length being 14" flange to flange vs. 22" for the K400. That would also allow 2-way operation using the 902 drivers. What woofers, volume and ports do you think would work good with this option. I can draw it up. rigma Quote Link to comment Share on other sites More sharing options...
DrWho Posted January 16, 2007 Author Share Posted January 16, 2007 What MF/HF section are you using for your mains? (assuming khorn bottoms?) On the first page of the thread I mentioned the Eminence Delta Pro-12:http://www.eminence.com/proaudio_speaker_detail.asp?web_detail_link=DELTA%20PRO-12A&speaker_size=12&SUB_CAT_ID=1 http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=290-510&ctab=2#Tabs And then two baffle layouts were proposed: And: (as inspired by EAW) Both are drawn to scale actually. In both cases, the net internal volume is 5 cubic feet and there are two 4" diameter ports, each 2" long. In that latter picture, the ports could probably even be installed to the insides of the slots, allowing the cabinet to be narrower - but also requiring it to be deeper too. Quote Link to comment Share on other sites More sharing options...
jwc Posted January 16, 2007 Share Posted January 16, 2007 marion What is your space "size" for the center channel? Quote Link to comment Share on other sites More sharing options...
rigma Posted January 18, 2007 Share Posted January 18, 2007 JC, This is where it needs to fit. rigma Quote Link to comment Share on other sites More sharing options...
DrWho Posted January 18, 2007 Author Share Posted January 18, 2007 oh wow, that's a tight space... how far away is the listening position and what is the height of the TV? Is this going to be used as a center between your Jubilees? If so, I would recommend going with the K510 tweeter with the K69 driver similar to what sfogg is doing. It would be a better tonal match and smaller than any of your alternatives. And then you might want to consider a different woofer selection too...but I haven't thought that far ahead [] Quote Link to comment Share on other sites More sharing options...
rigma Posted January 18, 2007 Share Posted January 18, 2007 oh wow, that's a tight space... how far away is the listening position and what is the height of the TV? Is this going to be used as a center between your Jubilees? If so, I would recommend going with the K510 tweeter with the K69 driver similar to what sfogg is doing. It would be a better tonal match and smaller than any of your alternatives. And then you might want to consider a different woofer selection too...but I haven't thought that far ahead [] Yes once the Jub's are done they will be the front speakers and the Khorns will be the rear. The TV is 64" tall and 64" wide and the listening position is 15" back. Yea, I thought about the K510 & 69 it just I already have the Altec 511 but I guess I could easily sell them. If the K510 is the best option then that is what I will do. rigma Quote Link to comment Share on other sites More sharing options...
rigma Posted January 18, 2007 Share Posted January 18, 2007 I am still toying with the idea of fliping the room 90 deg and if I do that I could put a LaScala on top. I will work on a drawing of the room and post it here for input. rigma Quote Link to comment Share on other sites More sharing options...
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