Rob B.
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Thread Starter
- Joined
- Dec 17, 2025
- Posts
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More
- Preamp, Processor or Receiver
- Dayton audio KABD-4100
- Other Speakers
- HiVi F5 5" Bass/Midrange &
Dayton Audio DC28FT-8 1-1/8" Silk Dome Truncated Tweeter
Hi all, 1st time posting but been a lurker for awhile.
Years ago I built a ported stereo boombox 21"x11"x9" with 2 x 5" bass/mid & 2 x 1" silk dome tweeters, used a KAB 250 amp, passive 2500 crossovers & L-pad and was happy with the results. All drivers in the same enclosure no divider. Box is 3/4" pine, built like a tank, and been taken all over the place with me to work sites, camping, party's etc.
I've recently been trying to recreate this with the KABD-4100 and the Sigmastudio DSP but can't get the sound right and see a lot of phase issues in REW, though not really around the crossover area.
I'm new to DSP's and want to make sure I've understood what I've read as far as setting delays for the drivers, and your input would be greatly appreciated.
-Start with no x-over or eq and measure each driver individually, using one of the tweeters as a reference in the measurement.
-Should I then do the same using the other tweeter? Or will the result be the same as the other 3 drivers delay will all sync to the 1st tweeter used as reference.
-Then check all with the x-over on?
-If I then do nearfield and on axis measurements to try for a quasi-anechoic chamber plot, do I have the x-over on or off again, and by combining the NF and on axis plot will that mess with phase again?
I won't be able to take new measurements until after the holidays (tree and furniture removal), but just wanted to know if this approach works for the single enclosure w/4 drivers, or should I be doing something else.
Thanks and Happy Holiday's!
Years ago I built a ported stereo boombox 21"x11"x9" with 2 x 5" bass/mid & 2 x 1" silk dome tweeters, used a KAB 250 amp, passive 2500 crossovers & L-pad and was happy with the results. All drivers in the same enclosure no divider. Box is 3/4" pine, built like a tank, and been taken all over the place with me to work sites, camping, party's etc.
I've recently been trying to recreate this with the KABD-4100 and the Sigmastudio DSP but can't get the sound right and see a lot of phase issues in REW, though not really around the crossover area.
I'm new to DSP's and want to make sure I've understood what I've read as far as setting delays for the drivers, and your input would be greatly appreciated.
-Start with no x-over or eq and measure each driver individually, using one of the tweeters as a reference in the measurement.
-Should I then do the same using the other tweeter? Or will the result be the same as the other 3 drivers delay will all sync to the 1st tweeter used as reference.
-Then check all with the x-over on?
-If I then do nearfield and on axis measurements to try for a quasi-anechoic chamber plot, do I have the x-over on or off again, and by combining the NF and on axis plot will that mess with phase again?
I won't be able to take new measurements until after the holidays (tree and furniture removal), but just wanted to know if this approach works for the single enclosure w/4 drivers, or should I be doing something else.
Thanks and Happy Holiday's!
