Sound Level; Wire Connections - Alto Professional TX12 Guia Del Usuario

Sound Level

Permanent hearing loss may be caused by exposure to extremely high noise levels. The U.S.
Occupational Safety and Health Administration (OSHA) has specified permissible exposures to
certain noise levels. According to OSHA, exposure to high sound pressure levels (SPL) in
excess of these limits may result in hearing loss. When using equipment capable of generating
high SPL, use hearing protection while such equipment is under operation.
Hours per day SPL (dB) Example
8 90
6 92
4 95
3 97
2 100

Wire Connections

You can wire your XLR or 1/4" TRS cables as balanced or unbalanced. Here are some
examples:
Tip Ring
Sleeve
Determine the wiring configuration you need for your application and audio connections:
Balanced
Unbalanced
Small gig
Train
Subway train
High level desktop monitors
Classical music concert
Tip Ring
Sleeve
Hours per day SPL (dB) Example
1.5
1
.50
.25 or less
(Pin3)
Tip
Sleeve
(Pin1, linked to Pin3)
Tip
Ring
Sleeve
1
2
3
Tip
Ring
Sleeve
Tip
Ring
Sleeve
Tip
Sleeve
1
2
3
Tip
Sleeve
Tip
Ring
Sleeve
Tip
Sleeve
Tip
Ring
Sleeve
1
2
3
4
102 Riveting machine
105 Machine factory
110 Airport
115 Rock concert
(Pin2)
(Pin3)
(Pin1)
Tip
Ring
Sleeve
1
2
3
1
2
3
1
2
3
1
2
3
Center
Screen
Tip
Sleeve
Tip
Ring
Sleeve
Center
Screen
Center
Screen
1
2
3
(Pin2)