Sorry, but I think that I did not understand your question. Anyway, don't be confused. These are two completely different horn calculations for h and v. Here you only see the horz. horn. I had the idea to blend the two horn profiles some days ago and it worked quite nicely just after having programmed it.
Ignore my last post. Judged by the shape of construction wave fronts, more specifically at the mouth edge, it has to be the horizontal.
The JMLC HVDiff is right at the biggest dimensions I'd like to go. I see you were speculating more versions with roll overs, and what not. I think if I were to choose this horn for creation that I'd like the "mini roll-back or lip to a terminated mouth horn" that you brought up about applying to the jericho and shark.
I've heard that type of solution (foam, towels, etc) in other few places. I could characterize the lossy surface then add it to the model. I would prefer a surface less prone to contact damage.
The original "jericho" would be a good candidate for some CAD modifications to see the impact of adding a round over or some mouth treatment.
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Pretty impressive frequency response of a field coil compression driver with Aluminum diaphragm.
Measurements taken at the throat of the driver, without horn, 1/24 octave spectra with a 16 Ohms diaphragm at 1 Watt (4.0 Volts RMS) sweep sinusoidal signal from 200Hz to 22,000Hz.
One driver would buy you 3 pairs of Axi2050 though.
Measurements taken at the throat of the driver, without horn, 1/24 octave spectra with a 16 Ohms diaphragm at 1 Watt (4.0 Volts RMS) sweep sinusoidal signal from 200Hz to 22,000Hz.
One driver would buy you 3 pairs of Axi2050 though.
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AE TD12 + XR1564 + ND4015Ti2 (Tin Coated).
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This accompanying statement is from the website:
"Measurements taken with color identifying curves at the following field coil applied potentials:
Orange 10V
Green 20V
Blue 25V
Red 30V (do not apply higher than 31Volts potential for continuous use)
The driver may be operated with a field coil voltage from 24 to 30 Vdc.
Operating preferred voltage 28 Volts DC
The magnetic field strength is directly proportional to the power applied to the field coil up to saturation where an increase of power to the field coil won't increase the strength of the magnetic field and all that extra energy will be wasted as heat. In this configuration the best compromise is at 28 Volts dc, keeping the heat generation at a minimum with a very flat and high efficiency output throughout the audio response of the driver, extending very well up to he higher frequencies. This frequency response is rarely accomplished with permanent magnet drivers.
The frequency response clearly deteriorating as the power to the coil is reduced specially at the top end of the frequency spectrum as shown in the orange colored curve, the response is very similar with 28 to 30 Volts applied, only showing a relatively small increase of output at the frequency extremes at higher Voltages."
Those curves look too good to be true, yet I don't think these are beyond what's possible.
At almost $6000 each it should outperform just about any similar sized driver.
I.e. the response of a S2 (without distortion figures) is also very impressive and better than 90% of the pro audio stuff.
The same goes for WE and some RCA drivers.
The plots are probably normalized and the green curve clearly shows mass break(up) at 4 and >8k.
At almost $6000 each it should outperform just about any similar sized driver.
I.e. the response of a S2 (without distortion figures) is also very impressive and better than 90% of the pro audio stuff.
The same goes for WE and some RCA drivers.
The plots are probably normalized and the green curve clearly shows mass break(up) at 4 and >8k.
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No problem, these jmlc Iwatas have their own beauty! The most interesting question is, although, what is between the driver and the horn? Is this a very long linear section?
I guess you do. Even though many S2 addicts (Romy et al.) argue not to use it >6000hz, I know of at least one high-end loudspeaker manufacturer who told me it's fine up to 17k.
I hold this guy's opinion the highest regard.
At the same time we have to bear in mind that a S2 is not an Axi2050.
Why are the units in the graph dbv for an acoustic measurement?? You can't defy physics,
JBL Technical Notes Volume 1 Number 8
Rob
