JBL obviously decided to gloss over specific details for the final specsheet in order to make the product 'look' better, more believable or: less stupid.
100dB sensitivity and (-10dB) 35Hz-18kHz 4pi, max. continuous SPL: 124dB...
100dB sensitivity and (-10dB) 35Hz-18kHz 4pi, max. continuous SPL: 124dB...
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My friend bought DE360 and I printed STH 12", he also bought Dayton waveguide. He preferred Dayton for timbre and STH for imaging. He didn't like HF - lack of power on maraca instruments so gave me DE360 that collects dust and bought Daytons.
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It could be informative to see the polars. I think it would show that this is not a particularly good way how to do it - the termination seems too abrupt. Maybe (just my conjecture) for bigger horns there is a less detrimental effect but in this case it wouldn't surprise me if the result was not very good. A smaller waveguide in a rounded baffle could do a better service.
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So far I haven't figured out how to do it. The whole profile is very different for a different throat.Marcel, do you have an idea about exchngable throat? Different throat size leads to different length where contours are tangent.
It could be informative to see the polars. I think it would show that this is not a particularly good way how to do it - the termination seems too abrupt. Maybe (just my conjecture) for bigger horns there is a less detrimental effect but in this case it wouldn't surprise me if the result was not very good. A smaller waveguide in a rounded baffle could do a better service.
Dear Marcel I can print new one if you send me file. That waveguide was early STH. Project enclosed.
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My friend bought DE360 and I printed STH 12", he also bought Dayton waveguide. He preferred Dayton for timbre and STH for imaging. He didn't like HF - lack of power on maraca instruments so gave me DE360 that collects dust and bought Daytons.
Ah Yes, I forgot about those
Which crossover was used between the DE360 and the (I suppose) 6 or 8" woofer?
The 3-way with ring- and mid-dome is another project?
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The DSA315 is virtually resonance-free up to nearly 4 kHz, which is not bad for a 12" woofer. Then is starts to ring (an aluminum cone) but that should be high enough to be filtered out sufficiently - I hope.
- This is one of the many woofers I have lying around here. It may still end up in some direct radiating three-way.
- This is one of the many woofers I have lying around here. It may still end up in some direct radiating three-way.
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I'm interested in short tappered TL for such drivers - like Sanders and Jazzman use.
Oh, I'm already cured from that ...I'm interested in short tappered TL for such drivers - like Sanders and Jazzman use.
The DSA315 is virtually resonance-free up to nearly 4 kHz, which is not bad for a 12" woofer. Then is starts to ring (an aluminum cone) but that should be high enough to be filtered out sufficiently - I hope.
- This is one of the many woofers I have lying around here. It may still end up in some direct radiating three-way.
Did you mount it in a cab/baffle to get an impression of the sound signature?
Thick rubber rol surround + metal cone may lack midrange snappiness and 'paper' warmth.
I have to admit, the plots look promising and the motor structure appears to be properly engineered.
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Ah Yes, I forgot about those
Which crossover was used between the DE360 and the (I suppose) 6 or 8" woofer? The 3-way with ring- and mid-dome is another project?
1,2kHz (Behringer). Same project that replaced STH waveguide with DE360.
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