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Ok That means I could use the schematic with the following parts which seems to be about 7.6 times gain
so 600w*2=1200
then find the square root= 35v
I forgot that you are using simple stereo to mono resistors that cut the signal level a little so increase the 68k to about 100k.
It is a standard but all recordings and laptops do not follow it. Some are higher and others are lower. Gain does not need to be accurate because you have a volume control to adjust levels.so most laptops and would produce up to 316mV with low distortion?
A crossover uses active filters so that the cutoff is sharp. The RCs in the preamp create a gradual cutoff that is poorly defined then you have lows and mids or mids and highs adding and producing a peak in the frequency response. The phase at cutoff is also important to avoid adding levels or cancellation at the crossover frequency. The lowpass cutoff filter must match the highpass filter feeding the mids. The lowpass filter feeding the mids must match the highpass filter of the highs.Should I use preamp to cut frequency for the amplifier or should I allow the preamp to send high and low frequencies and then build an an active cross over separately to do that?
What else did you expect?but they dont seem accurate to me
Hi,
50k, 1uF
fc = 1 / (2 x Pi * R * C) = 1 / (2 x 3.14 x 50k x 1u) = 3.18 Hz.
What else did you expect?
Klaus
You probably want 20Hz to be flat without any reduction.
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