Hi,
I own JBL Nano K8 active powered 2 way speaker. It has 8 inch woofer driver ported probably at somewhere ~45Hz I assume.
Now, I want to add a sealed subwoofer. I was thinking about making an opamp based active crossover with a shallow slope of 6dB per octave at 100Hz low pass for the subwoofer
and 6dB per octave high pass for the JBL Nano K8. I believe that this will give me overlap around 100hz where all, JBL and sub are working together. The sub is going to sit very close to one of the mains so the sub will not reveal its location. By crossing the JBLs at 100Hz I effectively make them sealed as the port will not receive anything due to 100Hz crossover. I feel by shutting the port I will get better transient response and also relieve the 8 inch driver of much of bass leading to a better overall system. Please review my choices.
Thanks in advance,
WonderfulAudio
I own JBL Nano K8 active powered 2 way speaker. It has 8 inch woofer driver ported probably at somewhere ~45Hz I assume.
Now, I want to add a sealed subwoofer. I was thinking about making an opamp based active crossover with a shallow slope of 6dB per octave at 100Hz low pass for the subwoofer
and 6dB per octave high pass for the JBL Nano K8. I believe that this will give me overlap around 100hz where all, JBL and sub are working together. The sub is going to sit very close to one of the mains so the sub will not reveal its location. By crossing the JBLs at 100Hz I effectively make them sealed as the port will not receive anything due to 100Hz crossover. I feel by shutting the port I will get better transient response and also relieve the 8 inch driver of much of bass leading to a better overall system. Please review my choices.
Thanks in advance,
WonderfulAudio
Overlap is preferred if you can swing the positioning. Plugging your ports is another possibility.
I wouldn't worry as much about hearing the subs than using their position to get good summing.
I wouldn't worry as much about hearing the subs than using their position to get good summing.
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I overlap using the multi-sub configuration as described by Geddes and others. I wouldn't call it as simple as that, but guides have been produced. Your method is going to be partly based on overlap with spatial considerations (or else it wouldn't be flat).. so as I see it, learning that method wouldn't be a bad thing.
https://gedlee.azurewebsites.net/Papers/multiple subs.pdf
https://gedlee.azurewebsites.net/Papers/multiple subs.pdf