Hello does anyone know the s/t of the RCF L8CX200 coaxial driver or where to get them? I found them for 70 bux at
http://www.savinglots.com/djequipment1.asp?subcat=Speakers&RPC=1000
and I think these are the drivers inside the Mackie cx81.
But I dont know..
Cheers!
http://www.savinglots.com/djequipment1.asp?subcat=Speakers&RPC=1000
and I think these are the drivers inside the Mackie cx81.
But I dont know..
Cheers!
They looked interesting, until I saw the published FR. Seems like the HF unit isn't particularly well integrated, but at least it has a mylar diaphram, which is a big plus for me. Haven't used them, so might sound OK in practice. My interest was piqued to see if I could use them in my bass guitar rig.
I also found a few places in the US that were a couple of $ cheaper.
I also found a few places in the US that were a couple of $ cheaper.
graph?
hey there did you see something i did not?
where?
thanks
Brett said:They looked interesting, until I saw the published FR
hey there did you see something i did not?
where?
thanks
Re: graph?
http://www.rcf-precision.de/pdf/L8CX200.pdfholger honda said:hey there did you see something i did not?
where?
thanks
Mackie does use RCF stuff in their products, and they also own RCF or they merged or something- they are part of one group.
A lot of pro stuff seems to have some pretty screwy response curves. Maybe this one is just a bit more honest. The fact that its pretty sharp spikes rather than rounded reinforces this.
I wonder how this sounds vis a vis the Radian 8" coax at $340
Or the 10" Eminence coax Adire uses in their monster PA box w/ an 18" woofewr
A lot of pro stuff seems to have some pretty screwy response curves. Maybe this one is just a bit more honest. The fact that its pretty sharp spikes rather than rounded reinforces this.
I wonder how this sounds vis a vis the Radian 8" coax at $340
Or the 10" Eminence coax Adire uses in their monster PA box w/ an 18" woofewr
Seems like any time the HF unit fires through the cone, as in the typical coax, you see a truly bizarre response plot, though I must admit this one looks like a malfuntioning HF. Jeez, what a mess.
Way better off with a two way. The 8" portion looks pretty good, actually.
I've heard the big Altec 604, 605, and some Tannoy, so I know coax can be done well.
Tim
Way better off with a two way. The 8" portion looks pretty good, actually.
I've heard the big Altec 604, 605, and some Tannoy, so I know coax can be done well.
Tim
Beyma
I did find another 8" coax that looks better. Probably cost more, too.
Click on the pdf file.
http://profesional.beyma.com/ENGLISH/producto.php
Never heard it, but certainly better response(smoothed?).
Tim
I did find another 8" coax that looks better. Probably cost more, too.
Click on the pdf file.
http://profesional.beyma.com/ENGLISH/producto.php
Never heard it, but certainly better response(smoothed?).
Tim
Tim Moorman said:Seems like any time the HF unit fires through the cone, as in the typical coax, you see a truly bizarre response plot, though I must admit this one looks like a malfuntioning HF. Jeez, what a mess.
Tim
How about the coaxes that use a small horn instead of using the bass driver as an extention of the horn. Anyone heard these?
This is what i mean. i think these are pretty cheap too.
http://www.paudio-europe.com/products/db_1_6.htm
about half way down. Altec i beleave did this as well.
Hey guys, you have to scroll down on the link , but there they are!
I think Tannoys and some Altecs did this in the past. Some highly regarded drivers.
The rap against them I believe is that you get resonances from the areas between the back of the horn and the woofer cone.
How about something like these but with a conical type horn?
Maybe we could make our own from these models, but unscrew the rectangular horn and substitute the conical?
I guess this probably doesn't help... If the horn diameter could be
smaller , maybe, but I was thinking it could be mounted in a cylinder/ phase plug type thing the diameter of the voice coil.
So the opening of the horn could be about 4" . Anyone know the cut off frequency for a 4" horn?
Paudio makes some good stuff I think....
I think Tannoys and some Altecs did this in the past. Some highly regarded drivers.
The rap against them I believe is that you get resonances from the areas between the back of the horn and the woofer cone.
How about something like these but with a conical type horn?
Maybe we could make our own from these models, but unscrew the rectangular horn and substitute the conical?
I guess this probably doesn't help... If the horn diameter could be
smaller , maybe, but I was thinking it could be mounted in a cylinder/ phase plug type thing the diameter of the voice coil.
So the opening of the horn could be about 4" . Anyone know the cut off frequency for a 4" horn?
Paudio makes some good stuff I think....
>I think Tannoys and some Altecs did this in the past. Some highly regarded drivers.
====
Altec did. AFAIK, all Tannoys just use the cone as the 'horn'.
====
>The rap against them I believe is that you get resonances from the areas between the back of the horn and the woofer cone.
====
Yes, that was one of their problems, but their later designs got around this by making a large enough horn to lower the XO point enough that it is not an issue and horn load the main cone to get the best blend in the XO BW: http://www.lansingheritage.org/html/altec/specs/pro-speakers/9864.htm
====
>So the opening of the horn could be about 4" . Anyone know the cut off frequency for a 4" horn?
====
~13560"/pi/4" = ~1079 Hz, though its pathlength will determine the LF corner/roll off rate, with a 1/4WL considered to be the acceptable minimum.
GM
====
Altec did. AFAIK, all Tannoys just use the cone as the 'horn'.
====
>The rap against them I believe is that you get resonances from the areas between the back of the horn and the woofer cone.
====
Yes, that was one of their problems, but their later designs got around this by making a large enough horn to lower the XO point enough that it is not an issue and horn load the main cone to get the best blend in the XO BW: http://www.lansingheritage.org/html/altec/specs/pro-speakers/9864.htm
====
>So the opening of the horn could be about 4" . Anyone know the cut off frequency for a 4" horn?
====
~13560"/pi/4" = ~1079 Hz, though its pathlength will determine the LF corner/roll off rate, with a 1/4WL considered to be the acceptable minimum.
GM
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Loudspeakers
- Multi-Way
- 8 inch RCF coax