Sorry but I don't need that.
I have a 4 channel source and I want to put a low-pass and a hi-pass active filter on each channel.
Then take the tha signal from the 4 hi-pass filters and use them as an input for the 4 channel TDA amplifier - for the satelites of the audio system.
Then I will have another 4 signals from tha low-pass filters, that I want to mix them and use this signal for a mono amplifier that will drive the woofer.
I don't know how to mix the signals.
{Another question: It is OK to saparate like this:
woofer <400Hz
each satelite >100Hz (the speaker will be a full range, 10cm diameter)}
I have a 4 channel source and I want to put a low-pass and a hi-pass active filter on each channel.
Then take the tha signal from the 4 hi-pass filters and use them as an input for the 4 channel TDA amplifier - for the satelites of the audio system.
Then I will have another 4 signals from tha low-pass filters, that I want to mix them and use this signal for a mono amplifier that will drive the woofer.
I don't know how to mix the signals.
{Another question: It is OK to saparate like this:
woofer <400Hz
each satelite >100Hz (the speaker will be a full range, 10cm diameter)}
I have recently completed my 2.1 system with active crossover and digipots, its like this:
stereo inputs goto Priceton Technology PT2388 preset equalizer, after that to PGA2310, then a buffer of OPA627/BUF634, after that two channels goto OPA549 based gainclones, also they goto active crossover 8th order, after that its output if fed to DRV134 and 2 OPA541s, and thats about it.I ll try to upload project details soon for other so that they could use it for themselves.
All u ll need to do is add input for another 2 channels and ur 4.1 will be up and running.
stereo inputs goto Priceton Technology PT2388 preset equalizer, after that to PGA2310, then a buffer of OPA627/BUF634, after that two channels goto OPA549 based gainclones, also they goto active crossover 8th order, after that its output if fed to DRV134 and 2 OPA541s, and thats about it.I ll try to upload project details soon for other so that they could use it for themselves.
All u ll need to do is add input for another 2 channels and ur 4.1 will be up and running.
adi81bv said:Sorry but I don't need that.
I have a 4 channel source and I want to put a low-pass and a hi-pass active filter on each channel.
Then take the tha signal from the 4 hi-pass filters and use them as an input for the 4 channel TDA amplifier - for the satelites of the audio system.
Then I will have another 4 signals from tha low-pass filters, that I want to mix them and use this signal for a mono amplifier that will drive the woofer.
I don't know how to mix the signals.
{Another question: It is OK to saparate like this:
woofer <400Hz
each satelite >100Hz (the speaker will be a full range, 10cm diameter)}
First you need to understand how a 4 channel shunt mixer works.
Find it on the internet.
Your 4 output channels go to the 4 inputs of each high pass filter
and in parallel to that the 4 inputs of the mixer. The output of
the mixer goes to your low pass filter then onto the sub.
(Unless you want different c/o frequencies on each
channel, then you would need 4 low pass filters)
Overlapping (Assymetric) crossovers can work,
depends on the case and the slopes used.
/sreten.
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