Addicted to Fun and Learning
- Sep 27, 2019
- Milwaukee, Wisconsin, USA
Gotcha. I didn't see any mention of a very small enclosure.Two 8" (each) in a sub enclosure which double serves as a stand? Did you do the math assuming the same width and depth as the R3 has?
I'm not a DIY wizard like some on here, but I know enough to be dangerous.
I just plugged in a decent 8" sub like the JL audio 8W3. Here are a few quick sims making a lot of assumptions.
The only way to fix the likely anemic enclosure is playing with EQ. With a ported/vented design, cubic volume makes a Helmholtz resonator... resonate. If it's sealed, EQ is really the only option.
Try something like below, and do not have the bass overlap without a ~80Hz linkwitz-riley crossover between the R3 and the subs. Otherwise, the overlap may be a cancellation nightmare. If they are actually speaker stands, you can cross them over much higher, like up to 120Hz without any directivity issues.
Your max SPL of the subs from 25-80Hz should be about 30dB higher than the R3's with less distortion.
Light grey = ported 1cuft
Dark Grey = sealed 1cuft
Red = ported 5cuft
Green = sealed 1cuft with EQ