Whirlwind MIX-5 Benutzerhandbuch

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CONTROLS AND CONNECTIONS 
 
1.  Channel Volumes control input signals over a range of 
60dBm attenuation at full off to 20dBm of gain at full on. 
 
2.  Pan Pots (Mix 5 Stereo only) are dual pots with center 
detent, providing over 65dB of stereo isolation from left to 
right channel. The center deten t allows convenient and 
accurate setup, feeding signal equally to both channels. 
 
3.  Aux Input Pot  controls the rear panel RCA input jacks. 
Input signals are actively summed in the Mix 5 Mono, and 
maintain stereo separation in the Mix 5 Stereo. Again, with 
a range of -60 to +20dB of gain, the Mix 5 Aux input will 
interface easily with most types of gear.  
 
4.  Master Volume Pots (one for Mix 5 Mono) determine 
the amount of signal from the summing amps that is fed to 
the output drivers and the meters. These also have a gain  
range of -60 to +20dBm. 
 
5.  LED dB Indicators  are precisely calibrated in 3dB 
increments and span a range of  -15 to + l2dBm, measured 
unbalanced with the input switch in Line mode, at either 
the 1/4” output or the XLR output. (Add 6 dB for balanced 
output). 
 
6.  Phantom Power for each of the four input XLR jacks 
is activated by the rear panel pushbutton switch. Status is 
indicated by the front panel LED. Each channel is 
individually filtered to eliminate crosstalk through the 
supply rail. The Mix 5 supplies l8VDC with current 
limiting resistors chosen to ensure that the phantom supply 
will not fall below the AES minimum specification of 
l2VDC at a 5.2mA current draw. Most condenser type 
microphones draw between 1 and 3mA and will operate 
from 12 to 48VDC. 
 
7. Power Switch 
connects AC to the transformer primary 
and the LED indicates that the unit is receiving power. 
Both sides of the AC line are switched and a mains fuse is 
located on the circuit board inside the unit. 
 
8. Input 1/4” T RS and XLR Jacks are AC-coupled 
through phantom blocking capacitors with pin 2 positive, 
wired to tip, pin 3 negative, wired to ring, and pin 1 
common, wired to sleeve. Audio ground is not connected to 
chassis ground. 
 
9.  Input Mic/Li ne Switch is engages an active circuit t hat 
applies 20dB of gain when in the Mic position. This gain is 
applied to both input jacks. For most input signals the Out 
or Line position will be appropriate. 
 
10.  Output Male  XLR Jack (left for stereo) is balanced  
with pin 2 positive, pin 3 negative and pin 1 audio ground. 
For unbalanced operation use pins 1 and 2 leaving pin 3 
UNCONNECTED. To internally lift pin 1 from common, 
open the unit and cut jumper JMP84. 
 
11. Output Mic/ Line Switches affect only the XLR output 
jack(s) by inserting a 20dB pad across pins 2 and 3 when in 
the Mic position. 
 
12. Output 1/4” TRS Jack delivers the same signal as the 
XLR but has a separate driver circuit providing complete 
isolation from the XLR output. May be used either 
balanced with a TRS plug or unbalanced with a TS plug. 
Tip is positive, ring is negative and sleeve is audio ground. 
This jack can drive high impedance headphones directly, 
although one side is out of phase. A properly wired adapter 
cable can provide monitoring capabilities. 
 
13. Output 1/4” TRS Jack is connected to the right output 
and is identical to #12 above for the Mix 5 Stereo. It 
provides a second active isolated TRS output in the Mix 5 
Mono. 
 
14. Output Male  XLR Jack and Mi c/Line Switch  appear 
only on the Mix 5 Stereo and operate identically to #10 and 
#11 above, providing the right channel output. To internally 
lift pin 1 from common, open the unit and cut jumper 
JMP85. 
 
15.  Power Cord has a standard 15 amp plug for l20VAC 
and has no plug on the Mix 5MX or Mix 5sX 230VAC 
export models. Black is line, white is neutral and green is 
earth.