Mackie FRS1700 Owner's Manual - Loudspeaker Cable
14
FRS Series Amplifiers
FRS Series Amplifiers
Appendix B: Connections, math and stuff
1/4" TS Phone Plugs and Jacks
“TS” stands for Tip-Sleeve, the two connections
available on a mono 1/4" phone jack or plug. They
are used for unbalanced signals.
1/4" TS Unbalanced Wiring
Sleeve = Shield
4IP(OT
NL4 Connectors
When using the NL4 outputs in stereo or mono modes,
WIRETHE.,CONNECTORSASSHOWNBELOW
Stereo and Mono NL4 Connection
For other NL4 wiring configurations, see the hookup
DIAGRAMSONPAGESAND
Loudspeaker Cable
Note: Because of the high output capability of the
amplifier, use only Class 3 (CL3) cable.
Use loudspeaker
cables with a
minimum conductor
SIZEFORTHELENGTH
you need, as listed in
these tables.
4HISWILLMINIMIZE
power losses to less
than 0.5 dB. The
cable lengths listed
are “up to” lengths.
For in-between
lengths, use the next
larger conductor
gauge. Using
larger than the
RECOMMENDEDCONDUCTORSIZEISALWAYSPERMISSIBLE
5SINGSMALLERTHANRECOMMENDEDCONDUCTORSIZEWILL
result in higher power losses.
2
2
3
1
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
SHIELD
COLD
HOT
3
2
1
SLEEVE
TIP
SLEEVE
TIP
RING
RING
TIP
SLEEVE
RING
SLEEVE
TIP
TIP
SLEEVE
TIP
SLEEVE
Minimum AWG 4 ohm 8 ohm
18
10 ft
25 ft
16
25
50
14
25
75
12
50
125
10
100
200
Min Metric WG 4 ohm 8 ohm
12
3 m
8 m
14
8
15
16
8
25
20
15
40
25
30
60
COLD
HOT
1+
1+
1–
1–
2–
2+
Use a high-quality 3-conductor shielded cable to
connect the signal between the signal source (mixing
CONSOLEEQUALIZERETCANDTHEBALANCEDINPUTSTO
the amplifier. If you are using unbalanced inputs, use a
HIGHQUALITYCONDUCTORSHIELDEDCABLE(EREARESOME
COMMONAUDIOCONNECTORSANDTHEIRINTERNALWIRING
XLR Connectors
XLR connectors are commonly wired as follows
(according to standards specified by the Audio
%NGINEERING3OCIETY
XLR Balanced Wiring
Pin 1 = Shield
0IN(OT
0IN#OLDn
1/4" TRS Phone Plugs and Jacks
“TRS” stands for Tip-Ring-Sleeve, the three
connections available on a stereo 1/4" or balanced
phone jack or plug. TRS jacks and plugs are used
for balanced signals and stereo headphones.
1/4" TRS Balanced Wiring
Sleeve = Shield
4IP(OT
2ING#OLDn