I'm spitballing a plan for adding midrange taps to a B52/QSC clone waveguide using a Faital HF10AK, with Faital 12PR320 as the woofer, direct radiating.
This will be used for PA service. I'm already happy with the sound of this cabinet but I want to take it to the next level.
I have some Celestion TF0410MR and I'd like to use them. I've read many, many posts about this driver, but I am still undecided about whether I should be using 2 or 4 of them in this design.
No doubt 4X would be great but is it overkill? Fitting them on the horn will be a challenge but 2X looks to be much simpler, and of course less holes in this lovely sounding horn.
Then again, they are only 1mm Xmax and won't be seeing any horn loading at their low end. I'm imagining a 350-400Hz XO, 4th order.
Also I want to make a bare-bones passive XO for the mid/high transition to conserve amp and DSP resources. Would that be a fairly simple task for this particular setup? I sheepishly admit I've never built a passive crossover before...
This will be used for PA service. I'm already happy with the sound of this cabinet but I want to take it to the next level.
I have some Celestion TF0410MR and I'd like to use them. I've read many, many posts about this driver, but I am still undecided about whether I should be using 2 or 4 of them in this design.
No doubt 4X would be great but is it overkill? Fitting them on the horn will be a challenge but 2X looks to be much simpler, and of course less holes in this lovely sounding horn.
Then again, they are only 1mm Xmax and won't be seeing any horn loading at their low end. I'm imagining a 350-400Hz XO, 4th order.
Also I want to make a bare-bones passive XO for the mid/high transition to conserve amp and DSP resources. Would that be a fairly simple task for this particular setup? I sheepishly admit I've never built a passive crossover before...
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I did something similar to this: https://www.diyaudio.com/community/threads/bm-d446-on-ph-4220.335062/
I would advise 4 mids and moving the XO frequency up a bit. Depends on the genre what driver runs out of headroom first but at least it won't be the mids if you use 4.
I would advise 4 mids and moving the XO frequency up a bit. Depends on the genre what driver runs out of headroom first but at least it won't be the mids if you use 4.
I've used one of them with very good success on a SEOS15, which is similar to that horn. One is plenty (and then some) for home use, the midrange output had to be attenuated so the tweeter and woofers could keep up. Though for PA I'd probably go with 2. I'd try to minimize the number of ports into the tweeter throat myself, but for PA use probably 4 drivers would be a good tradeoff. Look at what the sensitivities and power handling are going to be for the tweeter and woofer and keep in mind that most of the SPL needed for PA music will likely be in the bass.
nice setup! you crossed to the woofer at 500Hz - was that the best for directivity? i was hoping to keep the CTC spacing at <1/3 lambda but maybe a bit of lobing is beneficial to the overall pattern?
I tried 400Hz and 500Hz and couldn't hear a difference so went with 500Hz as the 15" has more power handling. In the 400-500Hz region the mids and the 15" have around the same sensitivity but the 15" has much more power handling so the overall speaker should be louder with the higher crossover point. I want to get H and V polars to revise the processing/crossover but its waiting on me completing building a turntable. I also tried LR24 and LR48 and couldn't hear or measure a difference so went with LR48.
at some point I will try two of these TF0410MR in the horn and see how far I can take the SPL. at 99-100db sensitivity and 120W program power each it looks like a pair could make it to 120db peak, which would be enough, but Xmax/distortion could be the deal breaker.
as for the mid/high XO, I am hoping I can use low-slope passive filters to get good summation and use DSP for the rest. if I need to use passive 4th order electrical slopes and notch filters I figure may as well add another active channel, or more likely shelf the project since I would need to make 6 conductor cables and get another amp. tryna keep this project easy on my wallet.
as for the mid/high XO, I am hoping I can use low-slope passive filters to get good summation and use DSP for the rest. if I need to use passive 4th order electrical slopes and notch filters I figure may as well add another active channel, or more likely shelf the project since I would need to make 6 conductor cables and get another amp. tryna keep this project easy on my wallet.