Whirlwind MIX-5 Benutzerhandbuch

 
 

 
All of the XLR and 1/4” input and output jacks are 
active, electronically balanced circuits. The input 
section and all critical gain sections of the Mix 5 use 
the same IC for gain as top professional mixing 
boards. This IC,  along with careful  component 
selection and PC board layout, enables the Mix 5 to 
achieve professional quality signal reproduc tion. All 
the gain controls o n the Mix 5 (Channe l Gain, Aux 
and Master) have a range of -60 to +20dBm. With the 
input and output  switches in the L ine position and 
both the channel and master volume controls at the 
same settings, u nity gain is approximately at the 9 
O’clock knob position, 10dB gain at 12 O’clock, and 
15dB gain at 3 O’clock. At the 5 O’clock position the 
unit provides 35dB of gain. The Mic position of the 
input switch provides another 20dB for a total of 
55dB of gain. This feature allows the Mix 5 to 
adequately mix equipment with a wide range of audio 
level outputs. 60dB of attenuation in the Off position 
allows the Mix 5 to adequately “turn off” line level 
signals at the Mix 5 inputs. 
 
The output sectio n of the Mix 5 was d esigned to 
accommodate any configuration – line or mic level; 
XLR or ¼”; balanced or unbalanced. Each channel’s 

output jacks are i ndividually b uffered so that usi ng 
any combination of the outputs at any impedance will 
not affect the other outputs. With the Mic/Line switch 
in the Mic position, the XLR output is reduced 20dB  
(this switch does not affect the 1/4” jacks). The Mix 5 
uses an H-Pad resister network at the XLR to 
maintain the signal to noise ratio, regardless of the 
position of the Mic/Line switch. For the XLR 
outputs, if ground  lifting of pin 1 is desired, jumpers 
JMP 84 and JMP 85 inside the unit can be clipped. 
Then, in Line mode pin 1 of the XLR is completely 
lifted and in Mic mode the XLR’s pin 1 is ground 
isolated and referenced to pins 2 and 3. If unbalanced 
operation is desired from the XLR outputs, pin 2 is 
hot, pin 1 is ground, and pin 3 should be left 
UNCONNECTED. 
 
The Mix 5 utilizes a dual primary power transformer 
that is configured with internal jumpers for 120 VAC 
60Hz or 230 VAC 50Hz operation. There is an 
internal fuse on t he hot side of the  AC cord, and the 
power switch make s and breaks bot h the hot and 
neutral legs of the AC cord.