ok
yes JMLC270 is 12-15cm wider dia than same in traktrix
whats listening distance?
I think the JMLC full rollback horns are the smoothest sounding horns of all
apart from some CD horns, which have other issues
whatever "floats our boats".....
best
Leif
btw an ATR tape machine I see there?
Great questions about the tapped horn, let me answer them as much as I can. This is the design on volvotrer for a full size 20hz tapped horn. I attach the drawing with dimensions.
One of them is enough if you are using it like I do. Two would be better and four in every corner would be the best providing the flattest response with the least distortion. At the same time 4 tapped horns would mean 4 amps and many more meters of cables which can cause a lot of other audible problems on a 109db efficient system.
Keep in mind, with most of the music it is working very minimally. The way I use it is between 18hz and 40hz. Most visitors can not hear it working even when they are standing right in front of it! I built it out of 30mm mdf, it is rock solid with no resonance at all but is very very heavy.
It does not effect the r-l balance. However, when you start crossing higher, problems start appearing one by one. For me, the limit is around 60hz and even with that, there has been some detrimental effects. At 60hz the sound can not match the rest of my system, still it does not tip the balance. Localization starts either when you go over 80hz or with too much volume, so much so that it overwhelms the rest of the system.
I have a hypex amp and crossover with it. The crossover has a phase rotary knob. I took about 20 different measurements to find out what is close to best and then I minimally adjusted it from my hearing spot.
@audioquattr
I am using Eminence Kappa 3015LF, the hypex amp is the ds 2.0 plate amp for subwoofers specifically. It has 18db crossover, notch eq with gain, rotary phase alignment and a subsonic filter 24db at 12hz. The volume is set to less than half of full volume, about 11 o clock. it is 100watts at 8ohm.
Nice woofer, good sensitivity aswell.
Thanks for all the info.
I have used the dsp hypex the last few years. Now using the Fusion n-core, like them for subs.
I can't see it very good on the picture, is the opening on top (i mean starting from about 2m's from the floor) of the basshorn?
Great questions about the tapped horn, let me answer them as much as I can. This is the design on volvotrer for a full size 20hz tapped horn. I attach the drawing with dimensions.
One of them is enough if you are using it like I do. Two would be better and four in every corner would be the best providing the flattest response with the least distortion. At the same time 4 tapped horns would mean 4 amps and many more meters of cables which can cause a lot of other audible problems on a 109db efficient system.
Keep in mind, with most of the music it is working very minimally. The way I use it is between 18hz and 40hz. Most visitors can not hear it working even when they are standing right in front of it! I built it out of 30mm mdf, it is rock solid with no resonance at all but is very very heavy.
It does not effect the r-l balance. However, when you start crossing higher, problems start appearing one by one. For me, the limit is around 60hz and even with that, there has been some detrimental effects. At 60hz the sound can not match the rest of my system, still it does not tip the balance. Localization starts either when you go over 80hz or with too much volume, so much so that it overwhelms the rest of the system.
I have a hypex amp and crossover with it. The crossover has a phase rotary knob. I took about 20 different measurements to find out what is close to best and then I minimally adjusted it from my hearing spot.
Thank you very much for letting us watchOne last photo before I replace the TAD woofers and the tapped horn with the new open baffle servo bass system.
You can also see the new diffusers on top of my record cabinets.
What a beautiful room . Enjoy!One last photo before I replace the TAD woofers and the tapped horn with the new open baffle servo bass system.
You can also see the new diffusers on top of my record cabinets.
What kind of amps are you using for your bass modules Kodomo san. What frequency do you cross.One last photo before I replace the TAD woofers and the tapped horn with the new open baffle servo bass system.
You can also see the new diffusers on top of my record cabinets.
I am using class d German made monoblocks by AVM audio to drive the tad woofers which play from 40hz to 110hz.What kind of amps are you using for your bass modules Kodomo san. What frequency do you cross.
Excellent looking room btw.
Kind regards,
Tang
I am using class d German made monoblocks by AVM audio to drive the tad woofers which play from 40hz to 110hz.
I use a class d subwoofer amp to drive the tapped horns which play the lowest octave, 20hz to 40hz.
The new servo based system has 3 gr-research servo woofers on h frame open baffles on each side. They will be driven by their own special made servo amps which are class ab. This will cover 20hz to 110hz all by itself. One less channel for me