I have to disappoint you, the diaphragm is nothing special.
I would go as far to say it's the weak spot in the driver.
Attachments
These are from the Martion Bullfrog. Probably (semi) anechoic conditions (Stereo Magazin).
I agree with you. This is a bass-shy loudspeaker and should be used with subs, as I already stated a few pages ago.
In some rooms it may touch 60Hz -6dB or so, but that's about it.
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More marketing BS:
"Coaxial drivers are perfect point sources. This one is even better. A 1.5 inch compression driver made entirely from titanium with a pure titanium membrane fires into a horn that is crafted from special fibers and offers a perfect radiation with no unwantanted sweet spot and a crystal clear sound due to its practically vibration free material. The horn sits in the middle of a glorious 15inch bass driver made from poplar wood fibres, acoustically treated to minimize reflections."
It accompanies this loudspeaker, that uses the same RCF coax.
Hilarious specs:
Efficiency: 100 db SPL/1W/1m
Frequency Range: 29 Hz – 22.000 Hz
This guy soaks both diaphragm and cone in Shellac... works wonders
Nevertheless, I read some some show reports in which the highs are described as 'stingy'.
Anybody with a little knowledge of loudspeaker technology, or audio in general, ought to steer clear from high-end culture.
High-end, with a few exceptions, is targeted at people with - preferably lots of - cash to burn and a 'black-box syndrom' to cherish.
"Coaxial drivers are perfect point sources. This one is even better. A 1.5 inch compression driver made entirely from titanium with a pure titanium membrane fires into a horn that is crafted from special fibers and offers a perfect radiation with no unwantanted sweet spot and a crystal clear sound due to its practically vibration free material. The horn sits in the middle of a glorious 15inch bass driver made from poplar wood fibres, acoustically treated to minimize reflections."
It accompanies this loudspeaker, that uses the same RCF coax.
Hilarious specs:
Efficiency: 100 db SPL/1W/1m
Frequency Range: 29 Hz – 22.000 Hz
This guy soaks both diaphragm and cone in Shellac... works wonders
Nevertheless, I read some some show reports in which the highs are described as 'stingy'.
Anybody with a little knowledge of loudspeaker technology, or audio in general, ought to steer clear from high-end culture.
High-end, with a few exceptions, is targeted at people with - preferably lots of - cash to burn and a 'black-box syndrom' to cherish.
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59.500,00 €\Paar, Frequency Range: 24 Hz – 22.000 Hz Tobian Soundsystems | Standmonitor 18FH | KlangLoft - Ihr HiFi Studio mit Leidenschaft zur Musik und Technik
OK, I thought this horn driver is what the 1.4" initially referenced: https://www.diyaudio.com/forums/att...l-low-distortion-2-a-bullfrog_old-drivers-jpg
GM
GM
The 18" in that 60 grand a pair Tobian 2-way might as well be a RCF anyway, assuming this guys prefers to buy from a single manufacturer and thus receive considerable discounts.
Currently, RCF's line-up lacks an 18" with M-roll surround and ribless cone. However, the good 'ol budget L18P300 fits the picture perfectly.
Currently, RCF's line-up lacks an 18" with M-roll surround and ribless cone. However, the good 'ol budget L18P300 fits the picture perfectly.
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At first glance you'd think Altec 288/291. The terminals are different though.
The top (underside in the pic.), including the terminals, looks like vintage JBL.
Funny thing is, about a 1.5 ago I was close to buying a set of vintage drivers that looked exactly like this.
Even though these were almost free of charge I let them pass, because the dias were gone.
Some time later I coincidently stumbled upon the driver online, but can't recall the brand now. It'll pop up sooner or later.
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I know you are right. At first sight/thoughts its nice to imagine that everything I could want can be put into such a tight coaxial package. I am happy with the product I am in progress with now =)
Just received an email, my 16ohm AE TD15M order is being processed...no idea what that means but!, they'll be here when they get here =)
Can you believe that I still haven't settled on verticle vs horizontal lol! If I do it right I'll be able to reconfigure it, at will.
I did conclude that a front cover is mandatory. Too much money to stand in front of a 2 year old. When I leave for work, I can put the door on, put my keyboard away, all is well. =/
Thanks! Last time I paid attention, 18 Sound was a startup with a few relatively inexpensive woofers, but quite the lineup now, though unfortunately saw no 1.4" to sub/replace Altec/GPA.
I don't get out much, so thanks for listing the Duevals; looks like something I'd like to audition, but apparently no USA outlet.
GM