Hello everyone.
I would like to create my own stereo system from the WONDOM JAB3+ 2x50 W amplifier board. I have 4 speakers, 2 woofers and 2 twitter (see image), which supposedly support 50 W. These speakers were part of iLoud Micro Monitor.
I'm not sure how 4 speakers are connected to this JAB3 amplifier so that the frequency separation is correct. Could you tell me how to connect the 2 woofers and the 2 twitters to JAB3? Will I have to use a separate circuit to separate the frequencies? Could you give me a diagram with simple instructions?
Regards.
I would like to create my own stereo system from the WONDOM JAB3+ 2x50 W amplifier board. I have 4 speakers, 2 woofers and 2 twitter (see image), which supposedly support 50 W. These speakers were part of iLoud Micro Monitor.
I'm not sure how 4 speakers are connected to this JAB3 amplifier so that the frequency separation is correct. Could you tell me how to connect the 2 woofers and the 2 twitters to JAB3? Will I have to use a separate circuit to separate the frequencies? Could you give me a diagram with simple instructions?
Regards.
The tweeter and woofer drivers in the iLoud speakers were bi-amped, i.e., fed from separate amplifiers.
Therefore, you should remove all the original wiring shown in your image in post #1 above and connect the bass driver terminals directly to the output terminals of your amplifier board.
Then connect the tweeter driver terminals to the bass driver terminals, but with a 2.2 uF plastic film capacitor inserted between the positive bass driver terminal and the positive tweeter terminal.
High pass filter for tweeter driver
This will allow only high frequencies to reach the tweeter and act as a basis for further experimentation with frequency separation, AKA crossover, circuits.
Try this first and return if the results are unsatisfactory.
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I've now looked more closely at the WONDOM JAB3+ 2x50 W amplifier board:
https://www.audiophonics.fr/en/ampl...ooth-50-dsp-adau1701-2x50w-4-ohm-p-15063.html
It's a tad more versatile than I first thought!
https://www.audiophonics.fr/en/ampl...ooth-50-dsp-adau1701-2x50w-4-ohm-p-15063.html
It's a tad more versatile than I first thought!
Thank you. I can assure you that you've drawn the scheme correctly and beautifully! 😎
Preventing the low frequencies from damaging the delicate tweeter is essential, and is the minimum amount of frequency separation you have to do.
Designing a more sophisticated crossover circuit would require us to know the specifications of the low and high frequency drivers - which we don't!
P.S. Should the tweeter turn out to be too loud, you can insert a resistor of 10 watt power rating in series with (in line with) the capacitor.
The resistance value required will depend on how much you need to tame the tweeter, but a good starting point for experimentation would be 3.9 ohm.
Obviously, increasing/decreasing the resistance value will increase/decrease the amount of taming.
Preventing the low frequencies from damaging the delicate tweeter is essential, and is the minimum amount of frequency separation you have to do.
Designing a more sophisticated crossover circuit would require us to know the specifications of the low and high frequency drivers - which we don't!
P.S. Should the tweeter turn out to be too loud, you can insert a resistor of 10 watt power rating in series with (in line with) the capacitor.
The resistance value required will depend on how much you need to tame the tweeter, but a good starting point for experimentation would be 3.9 ohm.
Obviously, increasing/decreasing the resistance value will increase/decrease the amount of taming.
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