Also it has been mentioned to use a Full range 3 inch driver for highs.
Your crossover point now moves from 2500 down to 200 Hz
You can get incredibly good performance, and greatly simplify the design and cost of the crossover.
Majority of the typical impedance compensation can be eliminated by using a series crossover.
Quite literally one cap and one coil.
Assuming the typical 6 dB drop below 200/250 Hz
Additional compensation is also not needed.
Would be the reason for the 200 Hz crossover point.
And the loss is made up by proper driver selection.
assuming a 3" driver around 80 to 82 dB
and a 6.5" to 8" around 85 to 88 dB
The driver sensitivity will provide the 6 dB compensation
Your crossover point now moves from 2500 down to 200 Hz
You can get incredibly good performance, and greatly simplify the design and cost of the crossover.
Majority of the typical impedance compensation can be eliminated by using a series crossover.
Quite literally one cap and one coil.
Assuming the typical 6 dB drop below 200/250 Hz
Additional compensation is also not needed.
Would be the reason for the 200 Hz crossover point.
And the loss is made up by proper driver selection.
assuming a 3" driver around 80 to 82 dB
and a 6.5" to 8" around 85 to 88 dB
The driver sensitivity will provide the 6 dB compensation
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I would caution against such a low crossover point for a small 2" or 3" fullranger. They often have a rising distortion profile, and by 500Hz or so it is getting much higher than the level higher up in the passband. Of course you have to measure the driver to know this characteristic. But by crossing over somewhere above 500Hz the driver can be used where it performs best. Also, you might want to apply more baffle step correction below 500Hz, and that is better handled by the next lower driver than the fullranger.
if it stays true to the title of this thread, having 1st order acoustic slope on any tweeter will require many2 parts.
I sometimes work my way backward reading threads and was wondering why nobody mentioned the t34b... it was in the first post!
So the Peerless DA32TX00-08 is too big then how about the ETON 28 HD 2? It has a low fs and is just about the same size as the t34b.
https://audioxpress.com/article/test-bench-eton-29hd2-magnesium-ceramic-28mm-dome-tweeter
There is a very large format tweeter produced by Scan Speak, the D3806/8200. Dome is 38mm:
https://www.madisoundspeakerstore.c.../scanspeak-classic-d3806/8200-00-1.5-tweeter/
I once heard a 2 way system that used it back in the early 2000s and you could really "hear" the narrowing dispersion, which by the datasheet seems to already be happening as low as 4kHz. Honestly I would choose a small fullranger (2" or 3") over such a large dome.
https://www.madisoundspeakerstore.c.../scanspeak-classic-d3806/8200-00-1.5-tweeter/
I once heard a 2 way system that used it back in the early 2000s and you could really "hear" the narrowing dispersion, which by the datasheet seems to already be happening as low as 4kHz. Honestly I would choose a small fullranger (2" or 3") over such a large dome.
