For context I have built a test enclosure for a 3-way speaker design. I am planning on using three ScanSpeak Discovery drivers: 8” woofer, 7” mid and 1” tweeter.
I have used WinISD to model the ported chamber for the woofer and used the Madisound’s suggested volume for the mid/tweeter in a sealed chamber on a shared baffle. The box is lined with ¾” sound dampening material from Parts Express. The port is a 3” round port who’s length was calculated using WinISD.
I now have all three drivers in the enclosure and a separate set of binding posts for each driver. I have a UMIK-1 mic, a Focusrite Scarlett, a Windows PC and a Yahamha receiver hooked up to measure the frequency responses.
I already used the DATS V3 to get the impedance sweeps with the drivers in the enclosure. I ran my sweeps and even did sweeps of the ported woofer chamber with the port open and with it stuffed.
Now I am trying to determine the correct procedure, or a truncated one, to measure the individual frequency responses to create .frd files for crossover modeling in Xsim.
So far, I have taken measurements of the three drivers individually by placing the UMIK-1 one inch from the center of the driver cone, then measuring the response at 0, 15,30, and 45 degrees (by rotating the tower speaker and leaving the mic in the same position).
I have not taken measurements of the port yet. Now I am wondering what other distance I should use. I was thinking that using the one meter distance might be the next set of measurements. Since I don’t have a crossover network – does it make sense to use this distance, or should I stay closer to the drivers to get the raw driver output? This is my main question.
This speaker weighs 66 pounds, so getting it 6 feet up in the air outside is going to be a challenge and I live in a pretty ambiently noisy part of the suburbs. Plus, I’m not to the point of testing a crossover network and a “completed” speaker. I need. frd and .zma files to start modeling crossovers.
Your suggestions would be greatly appreciated and any links to other articles or videos would be a huge help.
Thank you!
George
Drivers being used:
ScanSpeak Discovery D2608/9130 1" Textile Dome HDS Tweeter
Scanspeak 18W/8434G-00 Discovery, 7" Midwoofer
Scanspeak 22W/8534G00 Discovery 8" Woofer with a 3 inch diameter port by 8" long.
I have used WinISD to model the ported chamber for the woofer and used the Madisound’s suggested volume for the mid/tweeter in a sealed chamber on a shared baffle. The box is lined with ¾” sound dampening material from Parts Express. The port is a 3” round port who’s length was calculated using WinISD.
I now have all three drivers in the enclosure and a separate set of binding posts for each driver. I have a UMIK-1 mic, a Focusrite Scarlett, a Windows PC and a Yahamha receiver hooked up to measure the frequency responses.
I already used the DATS V3 to get the impedance sweeps with the drivers in the enclosure. I ran my sweeps and even did sweeps of the ported woofer chamber with the port open and with it stuffed.
Now I am trying to determine the correct procedure, or a truncated one, to measure the individual frequency responses to create .frd files for crossover modeling in Xsim.
So far, I have taken measurements of the three drivers individually by placing the UMIK-1 one inch from the center of the driver cone, then measuring the response at 0, 15,30, and 45 degrees (by rotating the tower speaker and leaving the mic in the same position).
I have not taken measurements of the port yet. Now I am wondering what other distance I should use. I was thinking that using the one meter distance might be the next set of measurements. Since I don’t have a crossover network – does it make sense to use this distance, or should I stay closer to the drivers to get the raw driver output? This is my main question.
This speaker weighs 66 pounds, so getting it 6 feet up in the air outside is going to be a challenge and I live in a pretty ambiently noisy part of the suburbs. Plus, I’m not to the point of testing a crossover network and a “completed” speaker. I need. frd and .zma files to start modeling crossovers.
Your suggestions would be greatly appreciated and any links to other articles or videos would be a huge help.
Thank you!
George
Drivers being used:
ScanSpeak Discovery D2608/9130 1" Textile Dome HDS Tweeter
Scanspeak 18W/8434G-00 Discovery, 7" Midwoofer
Scanspeak 22W/8534G00 Discovery 8" Woofer with a 3 inch diameter port by 8" long.