I understand that. I already had it hooked up that way so I could break in the drivers a little. i will proceed to the rest of the measurements.
xrk971,
My cabinet set up and measurement plan did not give me good results. I need to redo my cabinet and then set up my measurement rig again. I am sorry for the delay. Howard
My cabinet set up and measurement plan did not give me good results. I need to redo my cabinet and then set up my measurement rig again. I am sorry for the delay. Howard
hdspeakerman,
There is software that can convert *.jpeg into FRD and ZMA files for using in crossover design applications:
need help using SPL TRACE to create FRD and ZMA files -
Techtalk Speaker Building, Audio, Video Discussion Forum
Maybe try it out and let us know if it works?
There is software that can convert *.jpeg into FRD and ZMA files for using in crossover design applications:
need help using SPL TRACE to create FRD and ZMA files -
Techtalk Speaker Building, Audio, Video Discussion Forum
Maybe try it out and let us know if it works?
Progress Slowed
My apologies to the folks interested in this project. I had amplifier problems and also health issues in my family. I got some guidance from John Hollander over at Parts Express on the preparation of the files needed for crossover work. We used Jeff Bagby's Blender and Response Modeler and I believe we have good files that I will post. I have tried to come up with a good crossover but I am not very experienced. Maybe someone here can make it work. I have listened to the speaker I built quite a bit and enjoy it, even with no crossover.
My files are .frd and .zma. I get a message that they are invalid. What do I need to do?
My apologies to the folks interested in this project. I had amplifier problems and also health issues in my family. I got some guidance from John Hollander over at Parts Express on the preparation of the files needed for crossover work. We used Jeff Bagby's Blender and Response Modeler and I believe we have good files that I will post. I have tried to come up with a good crossover but I am not very experienced. Maybe someone here can make it work. I have listened to the speaker I built quite a bit and enjoy it, even with no crossover.
My files are .frd and .zma. I get a message that they are invalid. What do I need to do?
I think you can attach .zip files, so just put both into a folder and zip it up.
There is a 1.8MB limit I think on file size for upload. An FRD or ZMA file should not be that large (they are essentially a 2 column ascii data file maybe 2000 lines long) - what are your file sizes?
The .frd files are 16KB and the .zma are 12kB.
I tried making a .dxo file from Xsim that is 54kb but I can't get it to upload.
I tried making a .dxo file from Xsim that is 54kb but I can't get it to upload.
The box is 12 inches tall by 7 inches wide. The AC130f1 is centered and mounted 1 inch from the top of the cab. The distance from the top of the cab to the center of the AC130f1 is 4 inches. The FR58 is centered and its center is 4.5 inches from the bottom of the cab. The offset between the two drivers was 1.47 inches.
Just rename them with a .asc file extension. That’s an allowed file extension.
File-frd.asc
file-Zia.asc
File-frd.asc
file-Zia.asc
Using the files you provide above, here is my first cut at the XO, at a nice FAST frequency of 600Hz. I was not able to make it a transient perfect - as I had to invert the tweeter. However, that may have something to do with the drivers acting electro-acoustically like a 2nd order crossover despite being 1st order electrically. You can tweak it from here - but this would actually sound pretty good. I am not sure why the FRD has such a big peak at 170Hz as the AC130F1 is really quite smooth. The Xsim DXO file is uploaded as .ASC. Rename to .DXO to use in Xsim.
Schematic:
Frequency and Acoustic Phase:
Imepdance and Elect Phase:
Schematic:
Frequency and Acoustic Phase:
Imepdance and Elect Phase:
Attachments
Last edited:
Here is a XO at 1kHz, which might give a little more power to be delivered from the woofer as a midbass. There is a high impedance peak near 90Hz that I have not dealt with yet... But here are standard Parts Express part numbers for all the components.
Schematic for 1kHz XO:
Freq Response:
Impedance:
I have a question, what is your box alignment? Sealed or bass reflex? The peak at 170Hz might be result of too small a box and not enough damping.
Schematic for 1kHz XO:
Freq Response:
Impedance:
I have a question, what is your box alignment? Sealed or bass reflex? The peak at 170Hz might be result of too small a box and not enough damping.
Attachments
You can use the Dayton 3mH coil if desired, should not affect Xo too much.
Dayton Audio 3.0mH 18 AWG Perfect Layer Inductor Crossover Coil
Dayton Audio 3.0mH 18 AWG Perfect Layer Inductor Crossover Coil
The box is sealed. I believe it is the same box I used for the Continuums. It is 12" H x 7" wide x 8 3/4" deep. The woofer is mounted 1" from the top of the box. I wonder if that could have anything to do with the peak at 170 hz.
I am pretty sure I have enough parts to build the crossover and see how it sounds. as I said earlier, I liked the way it sounded with no crossover. I will let you know how it sounds.
I am confused by your schematic for the FR58. I can't tell which is + and which is -.
The + comes off the bottom of the driver but them down by the R4 there is a ground. I am having trouble wiring things up correctly.
The + comes off the bottom of the driver but them down by the R4 there is a ground. I am having trouble wiring things up correctly.