Hi,
I'm trying to make a 2-way project with a crossover:
Wavecor WF168WA01 (4 Ohm)
and
Wavecor TW030WA05 (4 Ohm)
HP70 reflex tube, 10 cm long.
project file (Boxsim): project.zip (4.BPJ)
Do you have any ideas what could be improved here?
THX
I'm trying to make a 2-way project with a crossover:
Wavecor WF168WA01 (4 Ohm)
and
Wavecor TW030WA05 (4 Ohm)
HP70 reflex tube, 10 cm long.
project file (Boxsim): project.zip (4.BPJ)
Do you have any ideas what could be improved here?
THX
Attachments
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The woofer needs to be cut off more steeply, in my opinion. Not sure what you try to achieve with the LCR element parallel to the woofer. You probably need an (additional) parallel cap here.
Also, the tweeter may not be placed ideally with similar distances to three baffle edges (don't ask how i know .... I made the same mistake!).
Also, the tweeter may not be placed ideally with similar distances to three baffle edges (don't ask how i know .... I made the same mistake!).
some more comments - please just consider them irrelevant, if you are aware of these items 🙂 :
if you dampen the port and the area behind the driver, as it is done in your simulation file, you lose a lot of bass output. basically you are turning your bass reflex box into a aperiodic box. also, did you consider making the enclosure bigger (~27 l) and tuning it to around 50 Hz?
where did you get the frequency response data from?
the polar response data may be a bit optimistic (see tweeter). but that is just my completely arbitray feeling, based on the difference if you use geometric data for polar response of drivers.
woofer acoustic origin 66 mm behind baffle seems to be too much.
same for the tweeter (9 mm behind baffle).
keep in mind that depending on the measurement data this offset may be already included in the measurement.
I'm not entirely sure about phase data. good matching of 2nd order x-over with same driver polarity is uncommon.
my quick and dirty proposal for the box (26 litres, tuned to 52 Hz, no dampening behind driver and in the port) and the crossover.
the energy response has a slight dip at 2,5 kHz which can be pleasing.
if you dampen the port and the area behind the driver, as it is done in your simulation file, you lose a lot of bass output. basically you are turning your bass reflex box into a aperiodic box. also, did you consider making the enclosure bigger (~27 l) and tuning it to around 50 Hz?
where did you get the frequency response data from?
the polar response data may be a bit optimistic (see tweeter). but that is just my completely arbitray feeling, based on the difference if you use geometric data for polar response of drivers.
woofer acoustic origin 66 mm behind baffle seems to be too much.
same for the tweeter (9 mm behind baffle).
keep in mind that depending on the measurement data this offset may be already included in the measurement.
I'm not entirely sure about phase data. good matching of 2nd order x-over with same driver polarity is uncommon.
my quick and dirty proposal for the box (26 litres, tuned to 52 Hz, no dampening behind driver and in the port) and the crossover.
the energy response has a slight dip at 2,5 kHz which can be pleasing.
Attachments
Thank You! 🙂
"where did you get the frequency response data from?"
wavecor.com/html/database.html
WF168WA01 frequency response
WF168WA01 impedance response
TW030WA05 frequency response
TW030WA05 impedance response
Thx
"where did you get the frequency response data from?"
wavecor.com/html/database.html
WF168WA01 frequency response
WF168WA01 impedance response
TW030WA05 frequency response
TW030WA05 impedance response
Thx
Sharp corners create diffraction... which is like reflections... you need to "squint".... round them off with r=20mm?
//
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ok, these do not include polar data, if I'm not mistaken.
if you use boxsim2 be sure to chose option polar response based on geometry, because you don't have polar frequency measurements.
see german version in the screen shot below...
Attachments
You have an excess of tweeter output between 1.5 and 2.5 KHz (more or less). This "knee" is responsible of the bump in the combined FR at crossover point.
The woofer slope needs to be steeper after 3KHz.
Every coils has a DCR, and you have to input it in the simulator.
Path difference between a 6" mid and a tweeter is in the order of 3-4 cm.
Ralf
For the best sounding speaker pay special atention to the phase, phase from the bass and tweeter need to be as much close to each other, as very close from one to the seccond it will sound better, you have done it allready prety good from 500 to the 1.5k and from 1.5k to the rest, you just need to corect a region from the 200 to the 500 since there you have 90 degree and thats a region for dynamics, if you corect that right you will hear dynamic sound like comming from the tweeter region. Also you have bump bout 4db at 1.75k, maybe better idea move only tweter cross freq to 2k! This is the best sounding speakers I have ever had in my home, might help you figure out some things like phase which in my opinion is much much important
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Before 500 Hz the tweeter is more than 40dB quieter than the woofer, aiming for a phase alignment here is useless.
Ralf
Ralf
It seems you don't know what phase is.
Besides that, on the OP simulation at 350 Hz the tweeter is 40dB and the woofer 90dB, for a difference of 50dB. If there the drivers are perfectly in phase or 90deg apart the point is that you won't hear the tweeter at all at a normal listening distance with the woofer connected.
Ralf
It seems I have my own point of view, that doesn’t mean we have to agree. In this way when done, it fits together nicely without mistakes at least for me.