Hello
I got an idea today about using pc software to separate sound frequencies at a certain point then for testing using left and right channel for each frequencies group with a dual channel IC amp(TDA 7297).
I know I would have to lower the volume of the tweeter compared to the woofer and find the right spot, is there anything I have forgotten or maybe just don't know that I didn't mention ?
Edit: Could the difference in volume amplification be calculated based on the impedance difference of a tweeter and woofer or is it more complicated ?
Also would it cause some kind of distortion if the frequencies cut was a certain number (like 1000Hz so 999Hz goes to woofer but 1000Hz goes to tweeter) or does it need to be done gradually as to lower the volume on the woofer going beyond 1000Hz.
Is it better doing it this way compared to a passive crossover?
Thanks
I got an idea today about using pc software to separate sound frequencies at a certain point then for testing using left and right channel for each frequencies group with a dual channel IC amp(TDA 7297).
I know I would have to lower the volume of the tweeter compared to the woofer and find the right spot, is there anything I have forgotten or maybe just don't know that I didn't mention ?
Edit: Could the difference in volume amplification be calculated based on the impedance difference of a tweeter and woofer or is it more complicated ?
Also would it cause some kind of distortion if the frequencies cut was a certain number (like 1000Hz so 999Hz goes to woofer but 1000Hz goes to tweeter) or does it need to be done gradually as to lower the volume on the woofer going beyond 1000Hz.
Is it better doing it this way compared to a passive crossover?
Thanks
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It can be better. Passive crossovers are often used to equalize the drivers, as well as
cross them over. Active crossovers won't do this unless this is designed into the filter circuit.
cross them over. Active crossovers won't do this unless this is designed into the filter circuit.
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So except the volume matching I would have to equalize the drivers as passive crossovers would, could this equalization be done by transforming the sound signal in a certain way that would make my speakers sound the best they can.
If so doesn't that mean that with a microphone and a simple program it could automatically make a digital equalization perfect for the room and speaker distortions and it would be much more accurate than a passive crossover because of the standard values and component distortions.
If so doesn't that mean that with a microphone and a simple program it could automatically make a digital equalization perfect for the room and speaker distortions and it would be much more accurate than a passive crossover because of the standard values and component distortions.
Well that saves me a lot of work then, do you maybe know the name of the software they are using ?
This is called bi-amping, multi-amping. It has been done for many, many decades.
The XOs get put in front of the amplifiers and can be passice RC, LC, buffered versions of the same, and more commonly store bought as either op-amp circuits, or now, very versatile DSP XOs. Each has advantages, disadvantages, and very often much easier to get reasonable performance out of a pair of diy speakers.
Because man people use integrates, receivers, or don’t want multiple amps, it is, still, a niche market.
M-Time Developments
I most often design my 2-ways for use with a 1st order PLLXO (all WAW where the “tweeter” is XOed at 150-400 Hz), but am eagerly awaiting the arrival of the Nelson Pass B4-like active jFET XO.
dave
The XOs get put in front of the amplifiers and can be passice RC, LC, buffered versions of the same, and more commonly store bought as either op-amp circuits, or now, very versatile DSP XOs. Each has advantages, disadvantages, and very often much easier to get reasonable performance out of a pair of diy speakers.
Because man people use integrates, receivers, or don’t want multiple amps, it is, still, a niche market.
M-Time Developments
I most often design my 2-ways for use with a 1st order PLLXO (all WAW where the “tweeter” is XOed at 150-400 Hz), but am eagerly awaiting the arrival of the Nelson Pass B4-like active jFET XO.
dave
Regardless of which way you do this, you should be able to achieve results to the limit of your acoustic design. There is no underlying problem with accuracy, or distortion with these different ways to cross.