Kvn_W Posted July 13, 2021 Report Share Posted July 13, 2021 Believe it or not, I bought back my CD-9's this week! I missed those beauties and the gentleman decided to part with them, so I jumped on the opportunity to bring them back home. Does anyone have the crossover diagram for that model? I want to compare it to the other 3-driver models like the CD-8 or Model 3. Thanks! Quote Link to comment Share on other sites More sharing options...
Kvn_W Posted July 13, 2021 Author Report Share Posted July 13, 2021 Oh... in my quest for knowledge, I found a full-color CD series brochure, if someone wants to update the library. 🙂 Allison CD Series Brochure.pdf Quote Link to comment Share on other sites More sharing options...
newandold Posted July 14, 2021 Report Share Posted July 14, 2021 That’s a great story! I’m nearly certain I have the schematic on my main computer….will look tonight or tomorrow. I also have a copy of that brochure, though mine is pretty beat up from where it came! Bill Quote Link to comment Share on other sites More sharing options...
newandold Posted July 15, 2021 Report Share Posted July 15, 2021 On 7/13/2021 at 8:42 AM, Kvn_W said: Believe it or not, I bought back my CD-9's this week! I missed those beauties and the gentleman decided to part with them, so I jumped on the opportunity to bring them back home. Does anyone have the crossover diagram for that model? I want to compare it to the other 3-driver models like the CD-8 or Model 3. Thanks! https://groups.io Go here. Search “Allison Speakers” and join that group, if you would like to get the schematic. Guaranteed somebody there has it, or it’s in the files section, or both. Thought I had it, but came up dry. Bill Quote Link to comment Share on other sites More sharing options...
Kvn_W Posted July 15, 2021 Author Report Share Posted July 15, 2021 I'll give that a try. Thanks! Quote Link to comment Share on other sites More sharing options...
LesE Posted July 15, 2021 Report Share Posted July 15, 2021 I happen to have a copy. Quote Link to comment Share on other sites More sharing options...
Kvn_W Posted July 15, 2021 Author Report Share Posted July 15, 2021 Thanks for that! Wow, it confirms a suspicion I had, that the bass section of the 9's are electrically identical to the 3's. I had thought maybe there would be some series resistance added to the 3's woofer to balance out corner loading, but that's not the case. Quote Link to comment Share on other sites More sharing options...
newandold Posted July 15, 2021 Report Share Posted July 15, 2021 12 minutes ago, Kvn_W said: Thanks for that! Wow, it confirms a suspicion I had, that the bass section of the 9's are electrically identical to the 3's. I had thought maybe there would be some series resistance added to the 3's woofer to balance out corner loading, but that's not the case. Perhaps that’s because the “loading” energy from the floor is similar to the corner loading. I have a Sonos system in my kitchen that I tuck in the corner for the same reasons the Three is in there (inspired)! The results are indeed quite dramatic Quote Link to comment Share on other sites More sharing options...
newandold Posted July 15, 2021 Report Share Posted July 15, 2021 47 minutes ago, LesE said: I happen to have a copy. Les, So glad you came up with that here! (one stop shopping). The Classic Speaker Pages is superior in every way to that other site and all the big New England players are here (AR) etc. Years ago I appealed to the moderator to move everything here and I was met with extreme resistance….borderline hostility. Oh well, an agenda there for sure Bill Quote Link to comment Share on other sites More sharing options...
LesE Posted July 15, 2021 Report Share Posted July 15, 2021 39 minutes ago, newandold said: Les, So glad you came up with that here! (one stop shopping). The Classic Speaker Pages is superior in every way to that other site and all the big New England players are here (AR) etc. Years ago I appealed to the moderator to move everything here and I was met with extreme resistance….borderline hostility. Oh well, an agenda there for sure Bill Hey Bill, I must have grabbed this from the Allison group at some point. Most likely from the old Yahoo site. I pop into the new groups.io every now and then just to find out what those guys are up to. That platform seems to work for them and that's cool but I agree that modern forums such as CSP are a more effective and convenient way to communicate. Cheers, Les. Quote Link to comment Share on other sites More sharing options...
newandold Posted July 15, 2021 Report Share Posted July 15, 2021 8 minutes ago, LesE said: Hey Bill, I must have grabbed this from the Allison group at some point. Most likely from the old Yahoo site. I pop into the new groups.io every now and then just to find out what those guys are up to. That platform seems to work for them and that's cool but I agree that modern forums such as CSP are a more effective and convenient way to communicate. Cheers, Les. Last thing I did with them was just a few months ago….Dave Moran had someone who felt he could replicate the Allison tweeter and supply them to the group….. needed a “ template” so I sent him a dead Allison tweeter to assist in the process. Haven’t heard back yet as to any progress on that….. Quote Link to comment Share on other sites More sharing options...
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