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Saudade · 23rd February 2004

quote from other thread:
_____________________________________________

"Joe Malone (of JLM audio) suggested you can mix 'outside the box' simply by jigging up a resistor bank from the 8 or so analog outputs and mixing them to the analog input. Here is a quote:
quote:
------------------------------------------------------------------------
Neve bussing is very easy to do. But even easier below to get you started.
How to make the simplest 16channel balanced passive buss mixer with 32 x 1k or 2.2k resistors.
1. Mix all DAW outputs as left & right mixes (Drums, Bass & keys ,etc)
2. Connect every DAW output XLR pin 2(Jack tip)& XLR pin 3 (Jack ring)to one end of a 1k or 2k resistor.
3. Join other end of all Left output pin 2’s resistors together and the same for all left pin 3. Do the same for the right. This now gives you a balanced left and right mix which is down 18dB. Using Digi001 for an example with it’s +18dBM max output. You will have a balanced mix at about 0dBM. Run this into your Tape or DAT or back into your DAW. (Digi001 push up the soft faders in Pro tools about 18dB so those two inputs clip at about 0dBM). This gives you a place at the DAW outputs to insert analog gear as well as a balanced passive mix which is only used in the most expensive mixers. All fading & panning is done still inside the DAW so it is remembered next time you return to that song. Doing the Neve bussing will give you passive Fading and Panning which will improve things again but you will have to manually remember the setting like the good old days. "

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Don't quite understand the part about doing the panning inside the DAW.......

I can pan inside my DAW, but this passive summing mixer will ALWAYS assign each input into the centre position instead of hard left or right. I am under the impression that no matter how I pan, every input will still end up in the “Center” position when summed into the L/R outputs! This is because each input's tip and ring (pins 2 & 3) are always connected to both the left and right busses. Why else would a Folcrom have switches that lets you choose L, R, C or none?

Anyone knows how I can work around the problem? I was thinking of buying a Folcrom but it is still too expensive for me since I am just a hobbyist in the quest of “good sound” for my home setup. I figured considering the low cost, I should try building one first and if it works well enough I can make do with it until I have money to splash on a Folcrom......

The other thing is, in the above DIY summing mixer, would I need to always connect 16 inputs? Would disconnecting any inputs or sending no signal to some inputs affect the impedance/loading or stuff? Sorry I am an electronics idiot......

One last thing, which online shop would you guys recommend to get the parts (resistors etc) and what brands are good?

Thanks a million......

23rd February 2004	#1
Saudade Lives for gear Joined: Feb 2004 Location: Birthplace of the Soundblaster Posts: 633 Thread Starter	DIY Summing Mixer Part 2 quote from other thread: _____________________________________________ "Joe Malone (of JLM audio) suggested you can mix 'outside the box' simply by jigging up a resistor bank from the 8 or so analog outputs and mixing them to the analog input. Here is a quote: quote: ------------------------------------------------------------------------ Neve bussing is very easy to do. But even easier below to get you started. How to make the simplest 16channel balanced passive buss mixer with 32 x 1k or 2.2k resistors. 1. Mix all DAW outputs as left & right mixes (Drums, Bass & keys ,etc) 2. Connect every DAW output XLR pin 2(Jack tip)& XLR pin 3 (Jack ring)to one end of a 1k or 2k resistor. 3. Join other end of all Left output pin 2’s resistors together and the same for all left pin 3. Do the same for the right. This now gives you a balanced left and right mix which is down 18dB. Using Digi001 for an example with it’s +18dBM max output. You will have a balanced mix at about 0dBM. Run this into your Tape or DAT or back into your DAW. (Digi001 push up the soft faders in Pro tools about 18dB so those two inputs clip at about 0dBM). This gives you a place at the DAW outputs to insert analog gear as well as a balanced passive mix which is only used in the most expensive mixers. All fading & panning is done still inside the DAW so it is remembered next time you return to that song. Doing the Neve bussing will give you passive Fading and Panning which will improve things again but you will have to manually remember the setting like the good old days. " -------------------------------------------------- Don't quite understand the part about doing the panning inside the DAW....... I can pan inside my DAW, but this passive summing mixer will ALWAYS assign each input into the centre position instead of hard left or right. I am under the impression that no matter how I pan, every input will still end up in the “Center” position when summed into the L/R outputs! This is because each input's tip and ring (pins 2 & 3) are always connected to both the left and right busses. Why else would a Folcrom have switches that lets you choose L, R, C or none? Anyone knows how I can work around the problem? I was thinking of buying a Folcrom but it is still too expensive for me since I am just a hobbyist in the quest of “good sound” for my home setup. I figured considering the low cost, I should try building one first and if it works well enough I can make do with it until I have money to splash on a Folcrom...... The other thing is, in the above DIY summing mixer, would I need to always connect 16 inputs? Would disconnecting any inputs or sending no signal to some inputs affect the impedance/loading or stuff? Sorry I am an electronics idiot...... One last thing, which online shop would you guys recommend to get the parts (resistors etc) and what brands are good? Thanks a million......