jjptkd Posted February 2, 2018 Share Posted February 2, 2018 I've got a rare set of k-61 horns that have the 1-3/8 threaded insert for the mid drivers and have a set of soldered lug k-55v's bolted on and in my Chorus II's. As I suspected this was a huge improvement to the overall sound and balance of the speaker. These horns are hard to find but with an adapter to the stock horns it could be possible to do. I've been talking with a seller on eBay that sells the 4 bolt to 1-3/8 adapter basically female to male version like used in the KLF drivers and he already has the male to female version but would need to drill the right holes to make it work. Maybe there is something already out there that would work? I don't know but if you own Chorus II's this may be worth your time to investigate. https://www.ebay.com/itm/Altec-Lansing-EV-JBL-University-Horn-Adapter-Fits-Driver-511-811-Atlas-1-3-8/111706796911?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160727114228%26meid%3D1373248b5d98411ea0b30ccabe744662%26pid%3D100290%26rk%3D1%26rkt%3D4%26mehot%3Dpp%26sd%3D111706796911%26itm%3D111706796911&_trksid=p2060778.c100290.m3507 1 Quote Link to comment Share on other sites More sharing options...
jjptkd Posted February 3, 2018 Author Share Posted February 3, 2018 I sent the seller on eBay detailed pictures with measurements of the k-61 horn as he requested last night but have not heard back from him yet. I have not done any further research on adapters, it is possible there is already something out there and cheaper that already works? Quote Link to comment Share on other sites More sharing options...
Maximus89 Posted February 3, 2018 Share Posted February 3, 2018 So they made the stock CHII mid horn with the right thread for the A55-G? Crites sent me a part used for adapter but he doesn't know if it fits in the cabinet with the A55G installed...there looks to be a good 4 inches of space with the stock horn and driver so i dont see why not: Selenium ADF 25-25 bolt on adapter. Wonder if you have to make new holes in this as well? Quote Link to comment Share on other sites More sharing options...
jjptkd Posted February 3, 2018 Author Share Posted February 3, 2018 1 hour ago, Maximus89 said: So they made the stock CHII mid horn with the right thread for the A55-G? Yes, it was used in Pro Klipsch applications like the KP-301 II and a few others. Quote Crites sent me a part used for adapter but he doesn't know if it fits in the cabinet with the A55G installed...there looks to be a good 4 inches of space with the stock horn and driver so i dont see why not: Selenium ADF 25-25 bolt on adapter. Wonder if you have to make new holes in this as well? Yes, there is room but you will need to drill new holes in the adaptor. Someone here has already done it, I was trying to find the thread detailing the info but couldn't find it. Quote Link to comment Share on other sites More sharing options...
Maximus89 Posted February 3, 2018 Share Posted February 3, 2018 58 minutes ago, jjptkd said: Yes, it was used in Pro Klipsch applications like the KP-301 II and a few others. Yes, there is room but you will need to drill new holes in the adaptor. Someone here has already done it, I was trying to find the thread detailing the info but couldn't find it. I think i remember that thread. Someone who put it in Forte II's but i think he had different horns also. Was it @SWL? Quote Link to comment Share on other sites More sharing options...
SWL Posted February 3, 2018 Share Posted February 3, 2018 Nope.... wasn't me.Sent from my SM-G950U using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
jjptkd Posted February 3, 2018 Author Share Posted February 3, 2018 Last page of this thread has the info for the horn adapter with pictures: 1 Quote Link to comment Share on other sites More sharing options...
Maximus89 Posted February 3, 2018 Share Posted February 3, 2018 14 minutes ago, jjptkd said: Last page of this thread has the info for the horn adapter with pictures: looks like he had to drill his own holes of the adapter, that right? Quote Link to comment Share on other sites More sharing options...
jjptkd Posted February 3, 2018 Author Share Posted February 3, 2018 54 minutes ago, Maximus89 said: looks like he had to drill his own holes of the adapter, that right? Yes that is correct that's why I was trying to find something a little more plug and play. The drivers on the k-61 are a 4 bolt pattern, most adapters I've seen are 2 and 3 bolt. I know the ones in the eBay listing are expensive that's why I was hoping someone knew of another ready made option but if I can get him to drill the correct holes to make the adapter work I think it would be the best option so far; its as thin as possible and should be perfectly centered. 1 Quote Link to comment Share on other sites More sharing options...
geoff. Posted February 4, 2018 Share Posted February 4, 2018 This is exciting! Nice work. It could also be used on a K-601 or K-701. If there is room... Am I ever glad I have held on to my Forte ii’s. Are the output levels of the K-55’s and K-61’s the same? Quote Link to comment Share on other sites More sharing options...
jjptkd Posted February 4, 2018 Author Share Posted February 4, 2018 1 hour ago, geoff. said: This is exciting! Nice work. It could also be used on a K-601 or K-701. If there is room... Am I ever glad I have held on to my Forte ii’s. Are the output levels of the K-55’s and K-61’s the same? Thanks! In the forte II's I had there wasn't any room for an adapter on the stock horn, it pretty much almost touched the back of the cabinet already. My Chorus 1's with the 601 horn is the same way and I suspect the Quartet is probably too. This mod is pretty much unique to the Chorus II. I believe the k-55's are roughly on average down in output about 2db compared to the k-61's, not really too noticeable. Quote Link to comment Share on other sites More sharing options...
jjptkd Posted February 6, 2018 Author Share Posted February 6, 2018 On 2/3/2018 at 2:21 PM, Maximus89 said: looks like he had to drill his own holes of the adapter, that right? Ok so I just got a response back from the eBay seller, he has an updated listing of the adapter in the first post and has included k61 in the title. I've sent him all the measurements and thread type so these are pre-drilled with the same threads that are used on the stock drivers so you can reuse the same screws to attach these to the horn. Price is up there quite a bit higher than other options but these are high quality, plug and play and about as perfect a fit as you're going to get. https://www.ebay.com/itm/Altec-Lansing-EV-JBL-University-Horn-Adapter-Fits-Driver-511-811-Atlas-1-3-8-K61/122954183309?hash=item1ca0a3f28d:g:-mYAAOSwPc9WuMEj:sc:USPSPriorityFlatRateBox!98028!US!-1 2 Quote Link to comment Share on other sites More sharing options...
Maximus89 Posted February 6, 2018 Share Posted February 6, 2018 Ok so I just got a response back from the eBay seller, he has an updated listing of the adapter in the first post and has included k61 in the title. I've sent him all the measurements and thread type so these are pre-drilled with the same threads that are used on the stock drivers so you can reuse the same screws to attach these to the horn. Price is up there quite a bit higher than other options but these are high quality, plug and play and about as perfect a fit as you're going to get. https://www.ebay.com/itm/Altec-Lansing-EV-JBL-University-Horn-Adapter-Fits-Driver-511-811-Atlas-1-3-8-K61/122954183309?hash=item1ca0a3f28d:g:-mYAAOSwPc9WuMEj:sc:USPSPriorityFlatRateBox!98028!US!-1Wow! That’s great news! Have you ordered one? I’ll wait to hear from you on if it works and if it should work for the A55G as well as the K55. Hope he didn’t just say he did it but only updated the text Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
jjptkd Posted February 6, 2018 Author Share Posted February 6, 2018 1 minute ago, Maximus89 said: Wow! That’s great news! Have you ordered one? I’ll wait to hear from you on if it works and if it should work for the A55G as well as the K55. Hope he didn’t just say he did it but only updated the text I haven't ordered any, honestly $80 for adapters is a bit more than I'm comfortable spending when there's a few significantly cheaper options for the DIY'er type like myself. I just ordered the cheapest set of ABS adapters I could find for experimenting, don't really need them myself as I have threaded horns already. If I can get the cheaper sets to work and they seem like a good option I'll post my findings maybe offer to pass them on to someone here who might need them at cost? https://www.ebay.com/itm/2-Pack-Procraft-LHW-3-Horn-Adapter-Female-1-3-8-18-TPI-Threads/281461602951?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 3 Quote Link to comment Share on other sites More sharing options...
jjptkd Posted February 9, 2018 Author Share Posted February 9, 2018 Ok so I got my cheapy plastic adapters and got them fitted in about 10 minutes, turned out better than I hoped. I really like these, first off because they are cheap and secondly they seem to be made out of the same material only a lot thicker than the horns. Also, when you screw the k-55 into place the end of the driver sits pretty much flush with the edge so no big gaps. I've got these installed and have been playing some tunes, they sound great. All totaled with a trip to the hardware store for screws and washers and what not adapters cost about $10. 2 Quote Link to comment Share on other sites More sharing options...
Deang Posted February 9, 2018 Share Posted February 9, 2018 That’s a really nice fit. Quote Link to comment Share on other sites More sharing options...
Maximus89 Posted February 9, 2018 Share Posted February 9, 2018 @Born2RockU When you upgrade your KHorns to A-55G's sell me your K-55's so i can try this on my Chorus II's because i don't think i can afford the A-55Gs right now. You have one extra k-55 from the La Scala you already made switch to A-55G right? Quote Link to comment Share on other sites More sharing options...
absolve2525 Posted February 10, 2018 Share Posted February 10, 2018 Cool and cheap adapters! I ordered a pair to have around. Quote Link to comment Share on other sites More sharing options...
CANT Posted February 10, 2018 Share Posted February 10, 2018 Please see my response in the aforementioned Forte II thread for applicable issues Quote Link to comment Share on other sites More sharing options...
Born2RockU Posted February 10, 2018 Share Posted February 10, 2018 3 hours ago, Maximus89 said: @Born2RockU When you upgrade your KHorns to A-55G's sell me your K-55's so i can try this on my Chorus II's because i don't think i can afford the A-55Gs right now. You have one extra k-55 from the La Scala you already made switch to A-55G right? SURE ! ... its a deal ! How many K-55's ya need total ? Quote Link to comment Share on other sites More sharing options...
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