Do you have the ability to measure with a microphone and/ or a spectrum analyzer? That would make things a lot easier.
0.3 ms delay is like 10 cm distance, 1 ms delay is about 34 cm difference. The delay based on length difference is only a rough rule of thumb.Subs are almost always delayed a bit physically (as a result from the
design), so you might actually have to delay the kicks a bit, instead of
the subs. Tops are generally delayed the most and kicks bit. Normally you would use delay on the tops and use a 3 way crossover and
not overlap different cabinets in the same frequency range.
Hi, Mr. Cubo
I have built 2 of cubo kick 15 few months ago, I love the design and it sounds so good to me.
One thing confusing me, the kick sound wasn't punchy when I set the frequency from 90-200hz(as suggested), crossed at 100hz, but the punchy sound appeared when I tuned up to 300hz.
My cubo kick sits between mini scoop and MT121(TDA ver.), I slightly change the width from 62mm to 60mm.Dose it make sense tune up to 300hz? Or maybe my setting was wrong? Please advice me.
The entire kick range is about 80 - 300 Hz, so it's not uprising in itself that going from 200 to 300 Hz adds more punch to the kick. You're now getting pretty much the entire kick range from a single cabinet. I'm from the school of thought that if something works don't try to fix it, so If this new frequency range does work for you that's good. It can also mean that your current setup (including the MT121) needs a bit of fixing.
In the view of an entire system you would expect that 200 to 300 Hz to add the same amount of punch coming from the MT121 instead of the Cubo Kick 15 (while that's going up to 200 Hz). If it doesn't it's either because the MT121/ driver combo doesn't deliver, or there are some processing/ phase issues around the crossover region. If it does add the same amount of punch coming from the MT121 that's also good.
Do you have dampening material in the rear chamber of the Cubo Kick 15?
Thank you for the advice!!
I'll keep the kick range from 90-300hz, but sometimes the MT121 doesn't sound right.
Like you said, maybe the combo doesn't deliver, I need more time to play around with frequency and crossover.
I use foam in the rear chamber, it's very useful, I can see the 2226's cone moving a lot more then without dampening.