Thanks to Jcande and 100ohms for the answers ... why don't you post a picture of your creations? it would be nice to see what you were able to do, maybe even with some photos "in construction" would not be bad.
Even the DIY construction of an ARU would be interesting to know through the images.
Unfortunately, some of you have guessed: for me Covid meant the almost complete end of DIY moments in "hifi", I had to postpone everything to better times, but I am pleased to note that for someone else the DIY-life continues. 😉
Greetings and best wishes from Italy, with great esteem for all of you
Landrupp
Happy New Year and...
...back to Templer's Coral Horn Clone (should we call it the TCHC?)
About the driver's parameters:
Am I wrong, or this post can help you/us: https://www.diyaudio.com/forums/ful...-80-201-measured-parameters-3.html#post878953 (I assume Axiom 201 and 301 have (almost) identical parameters, being that the only difference is one more ring on the magnet).
About the design:
A more general remark, and - please - forgive me if I sound a little bit too amateurish here, but I have a feeling that this horn appllication is forgiving when it comes to dimensional variations (within limits).
My thinking:
• this enclosure was first developed for the Coral Beta 10 and Beta 8 (with two sizes) and it sounds great (I listened to both hooked to very good AN 300B Quest and they keep up with years of upgrades on these amps and the DAC feeding them);
• The internal volume in all the applications is affected by magnet size, presence or absence of tweeter and crossover, protruding magnets and dampening;
• I have this speaker (in a slightly enlarged version) playing the RFT and it sounds great too (photos are in my post above);
• Chris T. first put a Tannoy coaxial (Gold) in an enlarged cabinet, sounded great (my assumption: 12 inch Reds and HPD's would have sounded good as well);
• same Chris put a Goodmans 201 - same enclosure, sounded even better;
• again, he built the same cabinet for Twin Axioms;
• ...but he put THE Goodmans Axiom 80 in same it - sounded best to him (even though this is a 10-inch driver with a different construction).
• the bass extension seems not to be affected by the presence or absence of the "tongue", see towards the end of this article:
In all cases the bass extension was to about 30hz after which it rolls off abruptly.
My conclusion? This is a very forgiving cabinet design. </ducking for flak>
OT:
Anyone that has the 201 or the 301 should try them bare, just for kicks. I did, they sound impressive ;-)
...back to Templer's Coral Horn Clone (should we call it the TCHC?)
About the driver's parameters:
Am I wrong, or this post can help you/us: https://www.diyaudio.com/forums/ful...-80-201-measured-parameters-3.html#post878953 (I assume Axiom 201 and 301 have (almost) identical parameters, being that the only difference is one more ring on the magnet).
About the design:
A more general remark, and - please - forgive me if I sound a little bit too amateurish here, but I have a feeling that this horn appllication is forgiving when it comes to dimensional variations (within limits).
My thinking:
• this enclosure was first developed for the Coral Beta 10 and Beta 8 (with two sizes) and it sounds great (I listened to both hooked to very good AN 300B Quest and they keep up with years of upgrades on these amps and the DAC feeding them);
• The internal volume in all the applications is affected by magnet size, presence or absence of tweeter and crossover, protruding magnets and dampening;
• I have this speaker (in a slightly enlarged version) playing the RFT and it sounds great too (photos are in my post above);
• Chris T. first put a Tannoy coaxial (Gold) in an enlarged cabinet, sounded great (my assumption: 12 inch Reds and HPD's would have sounded good as well);
• same Chris put a Goodmans 201 - same enclosure, sounded even better;
• again, he built the same cabinet for Twin Axioms;
• ...but he put THE Goodmans Axiom 80 in same it - sounded best to him (even though this is a 10-inch driver with a different construction).
• the bass extension seems not to be affected by the presence or absence of the "tongue", see towards the end of this article:
.
In all cases the bass extension was to about 30hz after which it rolls off abruptly.
My conclusion? This is a very forgiving cabinet design. </ducking for flak>
OT:
Anyone that has the 201 or the 301 should try them bare, just for kicks. I did, they sound impressive ;-)
I also built a couple of horns with the help of a carpenter friend. The starting point was Coral-Beta 10 design, but made a little bigger according to Chris Templar and TNT. The material is 38mm HDF with oak veneer and castors underneath for better movability. They weigh just under 100 Kg each and are very stable. First I tried with Tannoy 12 ”and then with Goodman's Axiom 201 which was in my ears better in reproduction than Tannoy. Nowadays I play with Klangfilm KL L-307 which fits in the smaller room I listen to.
Please show us some photos of your horns, 1669El...
....and also – can you please tell us, how did you do to fit the larger magnet of the Axioms?
....and also – can you please tell us, how did you do to fit the larger magnet of the Axioms?
Good! what changes did you make to the original Coral / Templer measurements to be able to install the axiom 201 speakers? do you have a dwg, pdf or other file to share?
anyway thanks for your comment, happy 2021
I just used the measurements from Chris Temple and his sketch on the TNT site. I do have some pictures from the assembly but unsure how to show my pictures I took from that moment.
This is the best I can do for pictures.
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https://www.facebook.com/photo?fbid=2621302848161845&set=a.2621301611495302
https://www.facebook.com/photo?fbid=2621302978161832&set=a.2621301611495302
https://www.facebook.com/photo?fbid=2621303221495141&set=a.2621301611495302
I will post the images here again.
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https://www.facebook.com/photo?fbid=2621302848161845&set=a.2621301611495302
https://www.facebook.com/photo?fbid=2621302978161832&set=a.2621301611495302
https://www.facebook.com/photo?fbid=2621303221495141&set=a.2621301611495302
I will post the images here again.
I am sorry for all this mess. Please clean up the thread so it will only show the pictures in one way or another!
I understand that the great thickness of the panels helped you to insert the 201 simply by making a deeper cabinet with the same internal dimensions of the horn duct ...
Also, I think the magnet squeezed the insulation panel you put in the first chamber of the duct ... or am I wrong?
great work yours, i think mine will be something cheaper, but i share rokiki's opinion: it looks like a cabinet with a very tolerant scheme regarding the possible drivers to mount on it
thanks for the photos, sorry you don't have a project drawing to show us.
great!
Also, I think the magnet squeezed the insulation panel you put in the first chamber of the duct ... or am I wrong?
great work yours, i think mine will be something cheaper, but i share rokiki's opinion: it looks like a cabinet with a very tolerant scheme regarding the possible drivers to mount on it
thanks for the photos, sorry you don't have a project drawing to show us.
great!
Sorry no drawings left. The foam on some of the pictures was never used. A 12" driver is big and the 10,5" Klangfilm can breathe easier in my ears.
Horn is great but there is also sweet sound out of O.B. system. In my mono-rigg I use Klangfilm KL-L405 14" and two Audax 15" bass-drivers for that deeeeep church organ tones. This panel is made out of solid Swedish oak and weighs a ton! Great sound out of Audion 300b and/or 2A3 tubes.
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wow...
...thank you, 1669EI those are nice open baffles and a nice cabinet for the 201, very thick wood. Great of you to share. Unfortunately, I cannot see any of the facebook links from the previous postings, I get a "content unavailable" message.
Staying within the Axiom 201 topic: the person that sold the drivers to me suggested one possible way to enjoy them without breaking the bank: aim towards building the 12500cu enclosure recommended by Goodmans but build the fronts first and use them as open baffle until you decide whether you want to go to the cabinet or stay OB. Obviously you are past this moment 🙂
If you would be so kind and comment on one thing: you mentioned that "The foam on some of the pictures was never used". You mean you used the goodmans driver without the foam material?
The reason I am asking is that Chris Templer mentioned in an email that dampening the wall behind the driver is a must because of the reflections.
...thank you, 1669EI those are nice open baffles and a nice cabinet for the 201, very thick wood. Great of you to share. Unfortunately, I cannot see any of the facebook links from the previous postings, I get a "content unavailable" message.
Staying within the Axiom 201 topic: the person that sold the drivers to me suggested one possible way to enjoy them without breaking the bank: aim towards building the 12500cu enclosure recommended by Goodmans but build the fronts first and use them as open baffle until you decide whether you want to go to the cabinet or stay OB. Obviously you are past this moment 🙂
If you would be so kind and comment on one thing: you mentioned that "The foam on some of the pictures was never used". You mean you used the goodmans driver without the foam material?
The reason I am asking is that Chris Templer mentioned in an email that dampening the wall behind the driver is a must because of the reflections.
About the foam in the enclosure is that there was never really room for that. After testing the issue of reflections there was little difference in my ears.
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Well, I did not try the Axiom 201 in an O.B. set up but that would be interesting. In my mono O.B. the Klangfilm 405 14" sound very good. I do have two tweeters on hand but my ears are 70-years old so the highs are lost anyway.
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thanks again for the beautiful pictures and congratulations again
can you tell me what your ratings were? sounds very good as templer wrote?
what do you remember about the sound?
and after changing the drivers, what sound did you get?
can you tell me what your ratings were? sounds very good as templer wrote?
what do you remember about the sound?
and after changing the drivers, what sound did you get?
As Chris wrote, the Tannoy are left behind in favour for the Axiom. For me they sounded very nice in a big room of 40 square meters but now in less than half that size the Klangfilm 307, 10,5" sounds the best. I get plenty of bass thanks to the big lip at the bottom of the horns as the connect better to the floor and increase the lower tones.
