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more info and other stuff later.....
a few pics to check out

i forgot to take a pic of the shunt resistors, i will later.....
its my little mess, still gotta put the case back together,
its a tight fit!

well, i successfully built a box. its 4 stereo channels (4 left and 4 right) then i made 2 with pan toggles (so when its up its center, when down its left, or right depending on channel) i did this with a 3pdt toggle. ( one input and 2 selectable outputs) so the middle 2 poles were the input from TR...

thanks for the reply. my goal was to use different preamps too. i can still use one to add the 23db of makeup gain. i just wont have to drive it as hard. but, in driving a preamp hard, the sound changes and you get a different tone. so, i may go back to the 10k resistors. i would rather have to turn...

yup, i put the k after the 385, that was a mistake. well, if i dont use the mutes or the panning, wiring is much easier, plus i get more channels. might even be cheaper. but if they have rotary 4p3t, it might be possible. i think i will go with the switched TRS jacks, it will eliminate the need for ...

new math and schematic 10K/24)200 / (10K/24) - 200 10k divided by 24 = 416.7 416.7 x 200 = 83333.3 83333.3 divided by 216.7 = 384.6 so a 385 shunt on outputs? i changed the resistors to 5k so then it would change the equation correct? i changed the 20k to 10k because i thought- 2 x 10 = 20 2 x 5 = 1...

ok, im changing my design, no more pan switches. it will cost too much and be a pain to do for all 14 inputs. the 4P3T toggles are about $11 each from mouser. so im just gonna make it with more channels. i will use the 5 pin TRS jacks and switch the contacts for a off. i found some jacks at the elec...

i think i will use the 5k resistors, so i have to use different shunt amount correct? now on he TRS thing. i cant find a 5 connection jack. i thought they were just 3 pole connectors. i was hoping to use something like these. http://www.speakerrepair.com/ebaypics/q_pan_trs-top.jpg im gonna take a tr...

oh wow, thanks for the info. i need to read it a few times over again to take it all in. i plan on doing all TRS connections, i have a good amount of patch cables so i can save money by using them. oh, how would i wire the TRS to switch? i was just going to make some dummy plugs to do this. but if i...

after looking at the schematic again, i would put the
230 resistor across the output.

it says below in more text that the output of the mixer is 200 ohms.
so would this include the resistor amount or is this amount without the resistor?

oh wow, did we just do all this math for nothing?

thanks again

its ok, i welcome all the help i can get. so, in the 1228 figure. 20,000/14 = 1428.57 1428.57 - 200 = 1228.57. (20K/14)200 / (20K/14) - 200 = rx first part- 20,000 divided by 14 = 1428.57 1428.6 x 200 = 285,720 second part- 20,000/14 = 1428.57 1428.57 - 200 = 1228.57. 285,720 / 1228.6 = 232.557 so i...

ok, i did something wrong here, doh! ok, im lost now. oh, do i love math :( so i would multiply 20k x 14 ? i thought "/" meant divide. i divided 20k by 14, i got 1.43. then i multiplied 1.43 times 200, i got 286. so now im here- (286 / 20k/n) - 200 286 divided by 1.43, got 200 200 - 200 is ZERO! ok,...

thanks for the reply. the linked schematic is great, just what i was looking for! i think i got it now. i forgot to mention the preamp part at the end of the chain. im a little confused on the ouput impedance formula. i haven't done math like this since high school, which was 16 years ago. i feel li...

thanks for the response. yeah, i made the mistake of putting the pan right when it should of been pan left. i designed the schematic from here- http://www.forsselltech.com/schematics.shtml its the first link under, "Summing Buss Schematics" i modified it. each channel would have a switch to bridge t...

ok, so i have been searching around the web. found lots of info. from what i gathered, i came up with this. website references- http://www.gearslutz.com/board/so-much-gear-so-little-time/67680-my-diy-summer-done.html http://en.wikipedia.org/wiki/Switch http://www.prodigy-pro.com/diy/index.php?topic=...

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