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#1
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What makes a mix buss sound good?
I have been thinking about about analog mixers. I understand
(somewhat)the electronics behind good pre's and eq's, but wonder what makes a good mix buss. A design I saw on a cheaper board is a resistor on the output of each channel connecting to the mixbuss amplifier. What in the design (besides quality components) sets a cheaper board apart from a good console? Is there a diference in the way the channels are summed? Or is it just a better line amp? |
#2
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What makes a mix buss sound good?
Eric Bartlett wrote:
I have been thinking about about analog mixers. I understand (somewhat)the electronics behind good pre's and eq's, but wonder what makes a good mix buss. A design I saw on a cheaper board is a resistor on the output of each channel connecting to the mixbuss amplifier. What in the design (besides quality components) sets a cheaper board apart from a good console? Is there a diference in the way the channels are summed? Or is it just a better line amp? 1. Passive vs. active summing designs. 2. Component quality 3. Quality of the make-up gain amp at the end, as well as the quality of whatever summing amps are used. 4. The buss drive amplifier stages. If you have big amps with a lot of current drive, you can use smaller valued summing resistors on a passive buss and therefore get lower noise. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#3
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What makes a mix buss sound good?
"Eric Bartlett" wrote in message
om I have been thinking about about analog mixers. I understand (somewhat)the electronics behind good pre's and eq's, but wonder what makes a good mix buss. The major concerns are dynamic range and frequency response. A design I saw on a cheaper board is a resistor on the output of each channel connecting to the mixbuss amplifier. What in the design (besides quality components) sets a cheaper board apart from a good console? Improved sound quality often comes from keeping internally-generated distortion, noise and externally-generated interference pickup to a minimum. Is there a difference in the way the channels are summed? While passive mix buses seem to rule, it would be possible to do an active mix bus driven by amplifiers that have a relatively high output impedances. With passive mix buses each signals being mixed passes through a relatively large resistor going into the bus, so the output sage of the amplifier for each input has to swing a large voltage, even if very little signal from that input is required. If the amplifier itself had a high output impedance, the voltage swing at its output would be minimized. Or is it just a better line amp? It seems that the most attention is paid to the quality of the circuitry driving each input to the mix bus, as well as the amplifiers that buffer it out. One feature of better equipment is more headroom, usually obtained by powering the amplifiers with higher voltages like +/- 24 volts, which of course demands that the active and passive components be able to handle such voltages. |
#4
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What makes a mix buss sound good?
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#6
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What makes a mix buss sound good?
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#7
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What makes a mix buss sound good?
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