hi all,
first 3 way crossover design here so im looking for guidance
the tweeter is 1x beyma cp21/f which is 8 ohms - 105dB 1/@1m
the midrange drivers are 2x B&C 6nsm51-8 in parallel for a 4 ohm load "100 dB, Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance"
the mid bass drivers are 2x faital 10pr320-8 in parallel for a 4 ohm load 95dB 1w @1m
in practice these are some of my favorite drivers.. but I've always run them with active crossovers. I was thinking maybe I could try this and save on amp channels and DSP..
now im noticing the sensitivity is a little spread out, so maybe some L pads needed? that's fine if required..
for the HF I'd like to low pass it @20kHz @24dB / octave
mids x over to HF I'd like to hand off @4kHz with a 12dB / octave slope
Mid range to mid bass X I'd like to hand off @500Hz with a 12dB / octave slope
Low cut I'd like to roll off @45Hz with a 24dB / octave slope
and somehow, I'd like to gain match it all!
not saying I can't just go online and look up a 3 way calculator and how to make a bunch of L pads and filter circuits but im sure there are people here with much more experience doing this that I can ping off of
appreciate it " tips hat "
first 3 way crossover design here so im looking for guidance
the tweeter is 1x beyma cp21/f which is 8 ohms - 105dB 1/@1m
the midrange drivers are 2x B&C 6nsm51-8 in parallel for a 4 ohm load "100 dB, Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance"
the mid bass drivers are 2x faital 10pr320-8 in parallel for a 4 ohm load 95dB 1w @1m
in practice these are some of my favorite drivers.. but I've always run them with active crossovers. I was thinking maybe I could try this and save on amp channels and DSP..
now im noticing the sensitivity is a little spread out, so maybe some L pads needed? that's fine if required..
for the HF I'd like to low pass it @20kHz @24dB / octave
mids x over to HF I'd like to hand off @4kHz with a 12dB / octave slope
Mid range to mid bass X I'd like to hand off @500Hz with a 12dB / octave slope
Low cut I'd like to roll off @45Hz with a 24dB / octave slope
and somehow, I'd like to gain match it all!
not saying I can't just go online and look up a 3 way calculator and how to make a bunch of L pads and filter circuits but im sure there are people here with much more experience doing this that I can ping off of
appreciate it " tips hat "
Just looked at the manufacturers data for your tweeter, beyma cp21/f.
They recommend 5KHz second order minimum, so you are not giving it an ideal work load @4Khz, but if you don't play too loud you may get away without adding detectable distortion to the sound.
What is your design goal, is it for use for use in a small commercial space, home theatre, or stereo listening. What layout are you looking at have you simulated box sizes yet.
Possibly vertical aligned WWMTM or WWMMT.
Passive components are not cheap items anymore, but I suppose if you have to buy a new DSP and amp that wouldn't be cheap either.
In fact and maybe this is what you were suggesting is DSP and amp bass channel, plus DSP and amp mid tweeter channel? So you would need a passive Xover for just the mid and tweeter elements?
They recommend 5KHz second order minimum, so you are not giving it an ideal work load @4Khz, but if you don't play too loud you may get away without adding detectable distortion to the sound.
What is your design goal, is it for use for use in a small commercial space, home theatre, or stereo listening. What layout are you looking at have you simulated box sizes yet.
Possibly vertical aligned WWMTM or WWMMT.
Passive components are not cheap items anymore, but I suppose if you have to buy a new DSP and amp that wouldn't be cheap either.
In fact and maybe this is what you were suggesting is DSP and amp bass channel, plus DSP and amp mid tweeter channel? So you would need a passive Xover for just the mid and tweeter elements?
They recommend 5KHz second order minimum, so you are not giving it an ideal work load @4Khz, but if you don't play too loud you may get away without adding detectable distortion to the sound.
I've used them down to 3.5 before pretty loud.. but certainly you are correct about the suggested low cut of the tweeter.
What is your design goal, is it for use for use in a small commercial space, home theatre, or stereo listening. What layout are you looking at have you simulated box sizes yet.
Small vinyl setup for a Cafe with pretty looking wood speakers
What layout are you looking at?
It is vertical aligned WWMMT
have you simulated box sizes yet?
Yes
Passive components are not cheap items anymore, but I suppose if you have to buy a new DSP and amp that wouldn't be cheap either.
Like anything a lot of it comes down to what quality / price bracket you are in. But the simplicity and price of one larger amp with a well designed crossover is something I would like to work on executing. Trying avoid the can of worms here and stay focused on the crossover
In fact and maybe what you were suggesting is DSP and amp bass channel, plus DSP and amp mid tweeter channel? So you would need a passive Xover for just the mid and tweeter elements?
Negative, just trying to stay on track with three way crossover methodology. I appreciate your consideration though
I suppose I might do best by just ordering the parts and getting going. What are people's typical methodology for this? No more than what I am about to do? Use the calculators and try different parts while slowly honing in towards perfection?
I've used them down to 3.5 before pretty loud.. but certainly you are correct about the suggested low cut of the tweeter.
What is your design goal, is it for use for use in a small commercial space, home theatre, or stereo listening. What layout are you looking at have you simulated box sizes yet.
Small vinyl setup for a Cafe with pretty looking wood speakers
What layout are you looking at?
It is vertical aligned WWMMT
have you simulated box sizes yet?
Yes
Passive components are not cheap items anymore, but I suppose if you have to buy a new DSP and amp that wouldn't be cheap either.
Like anything a lot of it comes down to what quality / price bracket you are in. But the simplicity and price of one larger amp with a well designed crossover is something I would like to work on executing. Trying avoid the can of worms here and stay focused on the crossover
In fact and maybe what you were suggesting is DSP and amp bass channel, plus DSP and amp mid tweeter channel? So you would need a passive Xover for just the mid and tweeter elements?
Negative, just trying to stay on track with three way crossover methodology. I appreciate your consideration though
I suppose I might do best by just ordering the parts and getting going. What are people's typical methodology for this? No more than what I am about to do? Use the calculators and try different parts while slowly honing in towards perfection?