The recommended frequency range of this woofer/midrange driver is 60 - 3500 Hz.
https://www.falconacoustics.co.uk/downloads/Seas/e0044_datasheet.pdf
The graph substantiates that 3500 Hz would be a good choice of crossover frequency
https://www.falconacoustics.co.uk/downloads/Seas/e0044_datasheet.pdf
The graph substantiates that 3500 Hz would be a good choice of crossover frequency
thanks for the reply...so the crossover I'm using now, cut at around 1.7khz, is definitely wrong?
Not wrong, but the crossover frequency need not be so low as far as the midwoofer is concerned.
However, I guess the optimum cross also depends on which tweeter you are using.
However, I guess the optimum cross also depends on which tweeter you are using.
Ah! So the operating range of the tweeter is 2,500 Hz - 30,000 Hz.
It has a low resonance frequency of 470 Hz so I would use a 2nd order filter operating no lower than 2,000 Hz -2,500 Hz.
EDIT: 3,500 Hz still looks good to me.
Of course, there is a mathematical art to combining woofer with tweeter and that's where the experts might chime in with their simulation software!
It has a low resonance frequency of 470 Hz so I would use a 2nd order filter operating no lower than 2,000 Hz -2,500 Hz.
EDIT: 3,500 Hz still looks good to me.
Of course, there is a mathematical art to combining woofer with tweeter and that's where the experts might chime in with their simulation software!
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Without measuring your acoustics with a microphone, we can only guess.
I usually also look at the nonlinear distortion of the speakers, this makes it much easier to choose the crossover frequency.
Ok thank you.
Unfortunately I don't have the diagram now, I'll write you the values:
Hp: serie 4,7 ohm- 8,2uF
parallel 0,300mH - 2,2uF-3,3ohm (series)
Lp: series 1,5mH
parallel 10uF
Unfortunately I don't have the diagram now, I'll write you the values:
Hp: serie 4,7 ohm- 8,2uF
parallel 0,300mH - 2,2uF-3,3ohm (series)
Lp: series 1,5mH
parallel 10uF
Your high pass filter would appear to be 3rd order (18 db/octave), i.e., capacitor in series followed by a parallel coil, followed by a capacitor in series.
In that case, your existing 1.7 kHz crossover point certainly won't damage your tweeter.
in fact with the components that I posted you the crossover frequency was around 2.2khz, then I changed it to zaph and it dropped to 1.7khz, making the voices more present.
If you use it as a two way with limited power input, you should be just fine with the crossover. You could see how long this works well, if you had distortion measurements of the tweeter.
On the other hand, if you add a subwoofer and a low cut for the combination, you can have a lot more SPL and the tweeter will have problems. With 2.500 Hz x-over you should have a speaker that is fine in both cases. I don't see any advantage for 1.700 Hz. Both tunes will sound just fine.
I will not comment on the Zaph thing, I can not really understand these values. Sure changing crossover parts will result in some audible difference, but only measurements can show what has happened.
On the other hand, if you add a subwoofer and a low cut for the combination, you can have a lot more SPL and the tweeter will have problems. With 2.500 Hz x-over you should have a speaker that is fine in both cases. I don't see any advantage for 1.700 Hz. Both tunes will sound just fine.
I will not comment on the Zaph thing, I can not really understand these values. Sure changing crossover parts will result in some audible difference, but only measurements can show what has happened.
In that circuit, C1, L2 and C4 form a 3rd order high pass filter - the other components will be there to tweak the tweeter's response.
On balance, particularly if the combination sounds good to you, you may be best to leave well enough alone!
excuse me, do you mean that I might be better off leaving the values I thought of instead of the zaph ones?
thank you!
thank you!
Thanks for your kind reply.
In my inexperience, the way I know to increase the crossover frequency by acting on the midwoofer is to lower the coil value
but then in doing so I remember that, when I tried, the area around 1khz was too prominent. is there another way to do it?
thank you
It is not possible to answer your question. It all depends on the response of the midrange or tweeter. Take a look at the on-axis and off-axis response curves of your drivers in your box/baffle. You'll want to aim for a smooth off-axis response (dispersion).
You said the crossover you were currently using "cut at around 1.7khz" and that's the one to which I was referring.
