Is it possible to cover the whole spectrum, high SPL, low distortion with a 2-way?

You could clone it.
With DSP the XO is a piece of cake.

This is the Bullfrog "Active Kit" by the way.
The amp is modded (stripped), which is clearly visible and for the comp. driver a small German 2x10 Watt Class A amp is built into the case of the Monacor power amp. The Class A draws power from the same power supply.
 

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Slightly cheaper alternative 15" coaxial with 3" compression driver.
This would be my preference.

Frequency range 40-18000 Hz
Recommended Fc 1200 Hz
Power handling 400 + 80 W
Max power 800 + 160 W
Sensitivity 99 + 107 dB
Voice coil diametre 3 + 3.00 inch
Dispersion 40° x 60°
Fs 38 Hz
Re 5.1 ohm
Qts 0.28
Qes 0.3
Qms 5.8
EBP 127
EBP criteria Vented box
VAS 246 L
ƞ 3.7 %
Xmax 4.5 mm
Xvar 6 mm
Mms 82 gr
Le 0.9 mH
BL 17.8 Txm
Flux density 1.15T / 1.9 T
Basket Aluminium
Fil bobine Copper + Aluminium
Diaphragm former material Titane
Voice coil former Glass fiber


15HCX76-8+8.gif


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Another interesting coax from an Eastern European manufacturer.
In a stage monitor test, including monitors with the B&C and RCF drivers, this coax was praised for its hifi sound quality.

2.8" diaphragm in the comp. driver and the woofer facilitates fullrange applications in a big cab > last image shows the driver in 190L, Fb @ 28Hz.
Doesn't go very loud though.
 

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Solid gold capacitor explains the ridiculous cost:scratch1:

The guy uses special woods for his cabinets, at least that's what he pretends.
Still, his designs are not only ridiculously expensive, but not very cleverly designed either.
An 18" with a small horn on top, that's intended to be used with 10 or 12" woofers.
Not saying it can't work, but it's definitely not the kind of engineering you'd expect for 60k.
At least the horn appears to be mass loaded/damped in it's own enclosure.


An externally hosted image should be here but it was not working when we last tested it.



The Living Voice Vox series aren't exactly cheap either, but those are completely hand built, including nearly all components.
Besides, those are integrated designs; every part is either designed or optimized for the end product.
This Tobian 18H consists of a bunch of COTS components (worth €1500) in an impressive looking enclosure.
 
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What I can't understand is all the effort in that enclosure shape an then the horn is mounted to the backside of the baffle in a way that does definitely cause diffraction. This is one more hint showing that with high-end expensive looks are sometimes more important than technically correct construction.

Regards

Charles
 
diyAudio Moderator
Joined 2008
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Thank you daemon, all I want is a tweeter that I can use down to 200Hz. Is it too much to ask?

There's much ado now, with patents and stuff. So it's time to keep common sense locked in. I don't want a coax that pretends to be better than an equivalent multiple entry horn that I could build myself.