|Multi-Way Conventional loudspeakers with crossovers|
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|9th January 2013, 10:03 PM||#1|
Join Date: Feb 2010
Looking for different designs with ER18RNX alt. CA18RNX and a Seas tweet.
I am looking for different designs that is using theese seas drivers.
It seems to deliver quite good performance for the cost, even better than the CA18RNX that i was going to use from the beginning.
The speaker desing i am interested in are a full register speaker, likely a 2,5/3 way matched to a Seas tweeter.
Are there any designs out there that i am able to copy?
Or is it wizer to go with the CA18RNX insted as ithere are a handfull designs using those drivers?
Is the difference in distortion even noticable when these drivers are put in a box?
I recall that i in someplace read that distortion measurement on a single driver is quite useless, as when it is put in a system with another driver and differenet boxes, measurements no longer are useful?
I mean, there are so many things that can cause distortion in a system so is it even useful to look at distortion measures on a single driver?
If it is, is the difference between Ca18 and ER18 noticable?
What are your thougths on these drivers?
I am primarily looking for a design using good quality drivers so that i can build a already existing ddesing first, and then later experiment on my own when my knowledge on speakerdesigning is a little bit more existing
I was originally set on building Zaphs Waveguide TMM, but then when i realised there were some problems regarding getting hold of the waveguide i thought it would be a good idea to ask for some advise on good designs.
I am almost set on a SEAS only design, but i might change my mind if i get any good suggestions.
The system has to be capable of high SPL, thats why i am looking on 2,5 and 3 way systems. I like the idea of huge headroom, thus is high spl capability important.
Of course, distortion is a high priority too.
Price for drivers, around 500$
Thanks in advance, M.
|11th January 2013, 12:08 AM||#3|
Join Date: Feb 2002
Location: Western Sydney
I have the ER18RNX in 24L tuned to the low 40s (with notch filter on the xover), Its a nice sounding, analytical speaker, but somewhat lacking in the low end, Looking at how Troels used the CA18RNX in the PMS, I expect it would be similar.
To my mind, the CA18RLY is a fuller sounding & more natural speaker & easier to crossover, but needs a larger box (I'm using 38L tuned to the low 40s, with the excellent 22TFF tweeter, currently my favourite system)
Impedance varies with frequency, use impedance plots of your drivers and make crossover calculations using the actual impedance of the driver at the crossover frequency
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