what is best
hi wilbur. thanks for your post. as advise to a newbe what would you consider best?
oliver
hi wilbur. thanks for your post. as advise to a newbe what would you consider best?
oliver
Ah now, come on 🙂
Can't say that, then not divulge just cuz it might start the cats howling again 😀
Tapered line array edge proposed wiring (fade out)
dear all,
i was hoping to get an answer to this as i will start wiring this week 🙂
many thanks
oliver
dear all,
i was hoping to get an answer to this as i will start wiring this week 🙂
many thanks
oliver
hi guys, i just wanted to report back that thanks to your input, i managed to come up with a wiring scheme for my curved CBT line array (based on jim griffins papers and open us navy research).
the wiring scheme is attached. i wired the top two speakers in parralel to further reduce output at the edge introducing a fourth level to the tapered design.
other wiring options using this principle are also possible.
after hooking them directly up to the amp with no EQ or correction of the design induced drop in higher frequencies, sound was of course pretty horrible at first.
after i connected them to my dsp and applying necessary ajustments, it got much, much better and i came to appreciate the advantages of the design.
most importantly, i noticed very little room resonances that had needed heavy EQing in my actual 4 way system. others already said it, sound stage is wide, and the music seems more detached from the speakers than with other designs. all in all extremely pleasant and i think my future main system will include speakers with that design.
bass goes down to 30hz but after falling off from 100hz downward. i use 21 2.5“ speakers and the speakers are close to 2m high.
treble also less sparkling than from my RT pro 2 ribbons which i love on my current system. but both issues were to be expected.
so i proceeded as planned: i cut the CBT off below 100hz where my sub takes over. very beneficial as it greatly reduces excursion on the small drivers. i couldnt do without the earth-shaking sub performance from my 21“ sub any more. it adds so much to the depth of the soundscape. i also cut the array off above 10k where the signal goes to the ribbons in my other speakers. i feel, this gives me the best of the CBT compensating for the shortcomings of this fullrange design.
this will obviously need some refinement as the off axis location of the tweeters is not great but the issue of limited importance as it concerns just the signal above 10K.
but even with very little tweaking, i am very pleased by the sound of this rig. the only real issue is how to best inegrate the tweeters into the system. sub under 100hz seems easy. i may explore some small coaxial speakers to be mounted at the centre of the speaker or just put the ribbons there. not 100% faithful to the original design but i suppose it would work well enough for my ears.
very exciting experience. thanks to all of you and above all to jim griffin whose great papers pointed us to this excellent speaker design.
all the best
oliver
the wiring scheme is attached. i wired the top two speakers in parralel to further reduce output at the edge introducing a fourth level to the tapered design.
other wiring options using this principle are also possible.
after hooking them directly up to the amp with no EQ or correction of the design induced drop in higher frequencies, sound was of course pretty horrible at first.
after i connected them to my dsp and applying necessary ajustments, it got much, much better and i came to appreciate the advantages of the design.
most importantly, i noticed very little room resonances that had needed heavy EQing in my actual 4 way system. others already said it, sound stage is wide, and the music seems more detached from the speakers than with other designs. all in all extremely pleasant and i think my future main system will include speakers with that design.
bass goes down to 30hz but after falling off from 100hz downward. i use 21 2.5“ speakers and the speakers are close to 2m high.
treble also less sparkling than from my RT pro 2 ribbons which i love on my current system. but both issues were to be expected.
so i proceeded as planned: i cut the CBT off below 100hz where my sub takes over. very beneficial as it greatly reduces excursion on the small drivers. i couldnt do without the earth-shaking sub performance from my 21“ sub any more. it adds so much to the depth of the soundscape. i also cut the array off above 10k where the signal goes to the ribbons in my other speakers. i feel, this gives me the best of the CBT compensating for the shortcomings of this fullrange design.
this will obviously need some refinement as the off axis location of the tweeters is not great but the issue of limited importance as it concerns just the signal above 10K.
but even with very little tweaking, i am very pleased by the sound of this rig. the only real issue is how to best inegrate the tweeters into the system. sub under 100hz seems easy. i may explore some small coaxial speakers to be mounted at the centre of the speaker or just put the ribbons there. not 100% faithful to the original design but i suppose it would work well enough for my ears.
very exciting experience. thanks to all of you and above all to jim griffin whose great papers pointed us to this excellent speaker design.
all the best
oliver
