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Multi-Way Conventional loudspeakers with crossovers

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Old 16th October 2019, 07:17 AM   #501
Ro808 is online now Ro808  Netherlands
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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...
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Last edited by Ro808; 16th October 2019 at 07:33 AM.
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Old 17th October 2019, 10:40 AM   #502
jzagaja is offline jzagaja  Poland
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Marcel, do you have an idea about exchngable throat? Different throat size leads to different length where contours are tangent.
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Old 17th October 2019, 03:29 PM   #503
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Does anybody have experience with B&C DE360 or DE111 and XO @ 1200-1500Hz?
The response of the DE360 looks exceptionally clean.
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Last edited by Ro808; 17th October 2019 at 03:43 PM.
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Old 17th October 2019, 05:05 PM   #504
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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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Old 17th October 2019, 05:53 PM   #505
mabat is offline mabat  Czech Republic
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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.

Last edited by mabat; 17th October 2019 at 06:02 PM.
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Old 17th October 2019, 05:55 PM   #506
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Quote:
Originally Posted by jzagaja View Post
Marcel, do you have an idea about exchngable throat? Different throat size leads to different length where contours are tangent.
So far I haven't figured out how to do it. The whole profile is very different for a different throat.
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Old 17th October 2019, 06:13 PM   #507
jzagaja is offline jzagaja  Poland
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Quote:
Originally Posted by mabat View Post
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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Old 17th October 2019, 06:32 PM   #508
Ro808 is online now Ro808  Netherlands
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Quote:
Originally Posted by jzagaja View Post
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?

Last edited by Ro808; 17th October 2019 at 06:34 PM.
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Old 17th October 2019, 06:39 PM   #509
mabat is offline mabat  Czech Republic
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I have the DE360 and plan to build some smaller waveguides for them to be put into an enclosure. But I'm very (very) slow these days regarding anything practical so you'd have to wait or design it yourself.

A nice pair, 10" + 18":
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Old 17th October 2019, 06:41 PM   #510
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BTW, this is an equalized frequency response of 12" Dayton DSA315-8 placed in a box:
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