Hi as my first loudspeaker I am building a "clone" of the qualio-iq speaker.
There are much information about the speaker on their website and from test.
I can't find out where the resistor and one of the capacitors goes. It looks like they site on the midrange
Some pictures of the new and updated filter taken from the website
There are much information about the speaker on their website and from test.
I can't find out where the resistor and one of the capacitors goes. It looks like they site on the midrange
Some pictures of the new and updated filter taken from the website
Over coil on midrange its one resistor 18 Ohm, change the capacitor on midrange to move the separation on 600Hz and the crossover point to tweeter its 7kHz
You also have a resistor for the tweeter, it is mounted outside near the speaker sockets. Qualio sells different values of this resistor for personal settings
Hi Martin.
How are these coming along? I'm thinking of doing the same.
Question......
What is the value of that C4 cap on the schematic?
How are these coming along? I'm thinking of doing the same.
Question......
What is the value of that C4 cap on the schematic?
It is really hard to reverse-engineer the crossover based on the description and images. I assume, that the images are not 100% correct or just for illustration purposes (not soldered), because the 220uF cap and 2mH coil combo does not make sense to me. The 220uF Cap needs to be swapped with the 42uF. Then we're getting a 550Hz low-pass for the woofer. The first order band-pass is missing the resistors IMHO. Here 220uF and an 1Ohm (just example) would give us a 720Hz on the low side and with the 18Ohm resistor along with the 0,39mH a 7,3 kHz on the high side.
I'm also skeptical about the 6,8uF, because we would need to drop the L2 to around 0,05mH to a achieve at least 8,6kHz.
Are you able to provide me with your measurements? I could try to find out proper parameters.
(there is a small error in the plan, please look at the v3 in my next reply)
I'm also skeptical about the 6,8uF, because we would need to drop the L2 to around 0,05mH to a achieve at least 8,6kHz.
Are you able to provide me with your measurements? I could try to find out proper parameters.
(there is a small error in the plan, please look at the v3 in my next reply)
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… I looked again to the first image and saw the 4th cap (rear left) which seems to have the same size a the 6,8 Cap.
This would makes sense because 2 times 6,8 uF in a row equals 3,4 uF and together with the 0,12 mH coil we would get a 7,9 kHz cross. 🙂 tada.
Once we have a better value for the 1 Ohm resistor (1,1 Ohm would probably do the trick), we're pretty much there gents
This would makes sense because 2 times 6,8 uF in a row equals 3,4 uF and together with the 0,12 mH coil we would get a 7,9 kHz cross. 🙂 tada.
Once we have a better value for the 1 Ohm resistor (1,1 Ohm would probably do the trick), we're pretty much there gents
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Another try: Please forget the resistors in the mid-woofer cross. This was wrong. I still dont know what the 18Ohm is for
Actually this would be my (starting) solution based on the values I could get.
Still the 220uF and the 390mH does not makes sense. Some better values for the mid driver can bee seen here my pic.
Also the 18 Ohm resister does not do much, however If I would have the measurements, I could find out.
Where did you get all the values of the components? I cannot see them in the picture.
All SB drivers are the 4 Ohms versions.
Still the 220uF and the 390mH does not makes sense. Some better values for the mid driver can bee seen here my pic.
Also the 18 Ohm resister does not do much, however If I would have the measurements, I could find out.
Where did you get all the values of the components? I cannot see them in the picture.
All SB drivers are the 4 Ohms versions.
perhaps the 18hom resistor in serie is here to raise both the low Qts of the driver and the impedance ?
do you have build it ? i will probably make my own version soon with a diferent bass driver and active crossover ..
do you have build it ? i will probably make my own version soon with a diferent bass driver and active crossover ..
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On the photo it looks like the resistor bridges a coil, which would flatten the first order low pass of the mid.
Anyhow. I ordered all the parts and with accurate measurements I will be able to calculate and build the crossover. Stay tuned…
Anyhow. I ordered all the parts and with accurate measurements I will be able to calculate and build the crossover. Stay tuned…
for the mid are you going to use the Satori MW16P or the MR16P ? i wonder how this drivers could go donwn to 200hz with their low Qts for OB
But Qts is really only relevant near resonance. The Satori 16s have a resonance around 30 Hz. Qts will make no difference to the midrange response.
I ordered the MW16PNW-4. the response in the upper frequencies look more even to me and I read good things about them. Lets see how they measure.
The baffle prototype and the AMT is already waiting 😀
great i have ordered the AMT two and hesitate with the MR16PWN-8 as my amp prefer higher impedance ..
I have giving up on this project, I suck at DIY.
Am in the process of selling all the drivers and the cabinets
Am in the process of selling all the drivers and the cabinets