I have four 4x8 sheets of Owens Corning 703 2" thick that I can make into a four foot long tunnel to measure my drivers in. Is that overkill?
Also, I'm going to do some studying today as I don't really know what a FRD or ZMA file is or where to find them or how to make them.
Once you provide some .FRD + .ZMA files I'm sure someone will take a crack at creating a different crossover for you.
.FRD file is a frequency response file ( as captured using your UMIK-1 microphone along with REW (and then exported from REW as an .frd file )).
.ZMA file is an exported impedance file ( created by your DATS system when hooked up to your horn/driver combo , +/or your woofer mounted within your enclosure > each,, measured separately without any passive components in line/place ) .
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How do your current crossovers not meet your sonic expectations ?
They sound good but I just "assume" they might sound better.
Once you provide some .FRD + .ZMA files I'm sure someone will take a crack at creating a different crossover for you.
.FRD file is a frequency response file ( as captured using your UMIK-1 microphone along with REW (and then exported from REW as an .frd file )).
.ZMA file is an impedance file ( created by your DATS system hooked up to your horn/driver combo , + your woofer mounted in enclosure > each measured separately without any passive components in line/place ) .
Great Earl. I'll get to measuring.
Dennis,
A good start here would be to display a frequency response of the system ( with existing crossovers ) as measured ( on-axis to the Edgar horn ) at 1 Meter and then again at 2 Meters.
- You can simply "zip" the .mdat file ( which is an REW file extension ) then up-load + attach it to your post ( if that's any easier for you ) .
A good start here would be to display a frequency response of the system ( with existing crossovers ) as measured ( on-axis to the Edgar horn ) at 1 Meter and then again at 2 Meters.
- You can simply "zip" the .mdat file ( which is an REW file extension ) then up-load + attach it to your post ( if that's any easier for you ) .
I am very satisfied with these in their current configuration just think it's time to build the crossovers they deserve. I'm not looking to change the components.
I am not going to give up. Third order tweeter xover helps low frequency from harm to the tweeter better than first order. I depends on xover Hz, tweeter design, and SPL output if needed or not.
Your use of resistors to pad down mid/tweeter is a choice, I use/prefer autotransformers for this in my crossovers. But the way you appear to use the resistors bungles up the capacitors value for blocking low frequencies.
in the schematic the caps show as polarized but I've never seen a polarized cap in a crossover.
1st Order Normal Polarity
5000 Hertz / 625 Hertz
4 Ohm Tweeter / 16 Ohm Mid / 8 Ohm Woofer
0 db Bandpass Gain, Spread = 8 : 3 octaves
Parts List
Capacitors
C1 = 7.95 uF
C2 = 17.93 uF
Inductors
L1 = 0.45 mH
L2 = 2.04 mH
1st Order Normal Polarity
5000 Hertz / 625 Hertz
4 Ohm Tweeter / 16 Ohm Mid / 8 Ohm Woofer
0 db Bandpass Gain, Spread = 8 : 3 octaves
Parts List
Capacitors
C1 = 7.95 uF
C2 = 17.93 uF
Inductors
L1 = 0.45 mH
L2 = 2.04 mH
Attachments
Good Eye Dennis!
That capacitor symbol is for a polarized capacitor.
How To Read a Schematic
Another reason ( I suppose ) to not place to much trust in those sites.
That capacitor symbol is for a polarized capacitor.
How To Read a Schematic
Another reason ( I suppose ) to not place to much trust in those sites.
Hi all. I was working on my GM70 amp for a bit but now my garage is toooo hot (between 105 and 98 in the summer) to work out there so I am back on this crossovers.
One thing I thought as I got back into this project is if I have a 4ohm tweeter, a 16ohm mid-horn, and a 8ohm woofer, do I just average that out to determine what tap I should use on my amp??? I have 4, 8, and 16 ohm taps.
One thing I thought as I got back into this project is if I have a 4ohm tweeter, a 16ohm mid-horn, and a 8ohm woofer, do I just average that out to determine what tap I should use on my amp??? I have 4, 8, and 16 ohm taps.
Hi all. sorry I had to drop out. A medical condition knocked me out for 8 months, but the docs figured it out and now I'm back.
First, I'm going to use my 3-way active crossover to determine the xover points I like best, then I'll take the measurements and post them here.
I haven't been in my listening room for 8 months. It feels great to get back into it.
First, I'm going to use my 3-way active crossover to determine the xover points I like best, then I'll take the measurements and post them here.
I haven't been in my listening room for 8 months. It feels great to get back into it.
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