iteched Posted May 21, 2014 Share Posted May 21, 2014 HI Guys, I'm almost done rebuilding an old 1956 Klipschorn. The crossover network is finished (old K-500-5000), the old Stevens woofer has been rebuilt....and I'm about ready to start on the woodwork. Since I only have one unit I would like to use a tube based mono amplifier to drive it. I think 5 - 15 watts should be fine. The problem I'm running into is finding a tube amp designed for 16 ohm speakers. Any recommendations? Thanks! Ed Quote Link to comment Share on other sites More sharing options...
swapface Posted May 21, 2014 Share Posted May 21, 2014 I don't know much about tube amps but I picked up an old Challenger CHA 10 which I am told is basically a Bogen PA amp. It can be configured to handle 4, 8, 16 ohm speakers. I am sure there are other 50/60 era amps that allow the same kind of configuration. I hooked it up to a of KG 1.5 and was quite impressed with the sound considering it was designed for PA applications. Perhaps something like that will be a inexpensive place to start. Quote Link to comment Share on other sites More sharing options...
mike stehr Posted May 22, 2014 Share Posted May 22, 2014 HI Guys, I'm almost done rebuilding an old 1956 Klipschorn. The crossover network is finished (old K-500-5000), the old Stevens woofer has been rebuilt....and I'm about ready to start on the woodwork. Since I only have one unit I would like to use a tube based mono amplifier to drive it. I think 5 - 15 watts should be fine. The problem I'm running into is finding a tube amp designed for 16 ohm speakers. Any recommendations? Thanks! Ed Brook 2A3 push-pull. Quote Link to comment Share on other sites More sharing options...
iteched Posted May 22, 2014 Author Share Posted May 22, 2014 HI Guys, I'm almost done rebuilding an old 1956 Klipschorn. The crossover network is finished (old K-500-5000), the old Stevens woofer has been rebuilt....and I'm about ready to start on the woodwork. Since I only have one unit I would like to use a tube based mono amplifier to drive it. I think 5 - 15 watts should be fine. The problem I'm running into is finding a tube amp designed for 16 ohm speakers. Any recommendations? Thanks! Ed Brook 2A3 push-pull. That is a neat amp - and found some neat history about it. Finding one that works might be an adventure. :-) Quote Link to comment Share on other sites More sharing options...
briney Posted May 23, 2014 Share Posted May 23, 2014 You could build one. Heyboer has all the transformers. Quote Link to comment Share on other sites More sharing options...
briney Posted May 23, 2014 Share Posted May 23, 2014 (edited) Something like this. Edited May 23, 2014 by briney Quote Link to comment Share on other sites More sharing options...
joessportster Posted May 23, 2014 Share Posted May 23, 2014 HI Guys, I'm almost done rebuilding an old 1956 Klipschorn. The crossover network is finished (old K-500-5000), the old Stevens woofer has been rebuilt....and I'm about ready to start on the woodwork. Since I only have one unit I would like to use a tube based mono amplifier to drive it. I think 5 - 15 watts should be fine. The problem I'm running into is finding a tube amp designed for 16 ohm speakers. Any recommendations? Thanks! Ed You do realize you can use an amp rated for 8 ohms with no problem right ? Quote Link to comment Share on other sites More sharing options...
beeker Posted May 23, 2014 Share Posted May 23, 2014 Something like this. That is a very nice amplifier! Quote Link to comment Share on other sites More sharing options...
djk Posted May 24, 2014 Share Posted May 24, 2014 One rack space, (about 40KW total) Quote Link to comment Share on other sites More sharing options...
mustang guy Posted May 24, 2014 Share Posted May 24, 2014 I really like my Fisher 80-AZ monoblocks. I'm running them with KT66 tubes and they sound incredible. I need one more EL37 tube to make 4, and I will be swapping the KT66's out. Quote Link to comment Share on other sites More sharing options...
seti Posted May 24, 2014 Share Posted May 24, 2014 Something like this. Is that based on the Brook 12A schematic? Quote Link to comment Share on other sites More sharing options...
briney Posted May 25, 2014 Share Posted May 25, 2014 Is that based on the Brook 12A schematic? Yes. It's pretty much an exact clone. Quote Link to comment Share on other sites More sharing options...
kuisis Posted May 25, 2014 Share Posted May 25, 2014 I have a a 54 and 56 Khorn. I run them running with two MC250's in mono. They sound great. What finish do you have on yours, Mine is Prima Vera Lacquer. Quote Link to comment Share on other sites More sharing options...
Taz Posted May 25, 2014 Share Posted May 25, 2014 McIntosh mc30 works well as power amp. And it is a mono block.. Quote Link to comment Share on other sites More sharing options...
iteched Posted May 26, 2014 Author Share Posted May 26, 2014 (edited) Thanks for the continued recommendations. 1. Regarding using an 8 Ohm amp - It was my understanding that its best (with tube amps) to have matching impedance. Please correct me if I'm wrong. 2. I have no problems building an amp (I have several guitar pedal projects on the bench at the moment but they will be done soon). If I'm wrong with #1 above then there are many kits to choose from or just build from the above mentioned schematic. I have a friend in Garland, TX that is a tube "genius" (he has a whole house FULL of tube radios - it is NUTS what he has) that can help if I build one from scratch. 3. The current finish on mine appears to be a "golden oak" type color. However, due to YEARS of sitting in an open mechanics shop its deteriorated quite a bit. Luckily there are no rotted areas. I'm about to build a rig to hold the speaker on its back so I can start prepping it for re-finishing. I'm still debating the color. I like cherry, redwood, or perhaps a satin black. Here are some pics showing the unit right after I rescued it. You can see the years of dust buildup. I think I posted these here before about a year ago - please forgive the repost: http://i260.photobucket.com/albums/ii40/iteched/Projects/IMG_0519_zps7c1f146f.jpg http://i260.photobucket.com/albums/ii40/iteched/Projects/055_zps56013412.jpg http://i260.photobucket.com/albums/ii40/iteched/Projects/054_zps7261be60.jpg http://i260.photobucket.com/albums/ii40/iteched/Projects/052_zps5b5dbbb9.jpg http://i260.photobucket.com/albums/ii40/iteched/Projects/053_zps46df7ba1.jpg http://i260.photobucket.com/albums/ii40/iteched/Projects/056_zpsf0fb2971.jpg Edited May 26, 2014 by iteched Quote Link to comment Share on other sites More sharing options...
Cal Blacksmith Posted May 29, 2014 Share Posted May 29, 2014 Cool iteched, your speaker is only a month older than I am, I wonder how hard it would be to find a PAIR (ok, numbers will not be matching) that were made on my birthday, that would be really cool but really hard to find! Quote Link to comment Share on other sites More sharing options...
iteched Posted June 1, 2014 Author Share Posted June 1, 2014 I think its pretty neat that this particular speaker is still made today - and in the same place. Crazy cost though - $4,500 each....that is a lot of cash. Quote Link to comment Share on other sites More sharing options...
Usedmilwaukie Posted November 1, 2020 Share Posted November 1, 2020 What did you do to rebuild your crossover I have a 1956 Khorn as well. Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted November 2, 2020 Moderators Share Posted November 2, 2020 @seti Do you remember what he used on the crossover? Quote Link to comment Share on other sites More sharing options...
Ceptorman Posted November 2, 2020 Share Posted November 2, 2020 2 hours ago, Usedmilwaukie said: What did you do to rebuild your crossover I have a 1956 Khorn as well. You do realize that the OP hasn't been on here in over 6 years? But others can help. Quote Link to comment Share on other sites More sharing options...
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