Connecting Speakers; Unbalanced Inputs - Martin Audio MA4.2s User Manual

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CONTENTS
7.1.2
T o co nn e ct a n u nb ala nced so urce , tie pin 3 (ring on T RS ja ck) d ow n to th e shield o f the con n ecto r. If yo u le a ve o ne
p in d iscon ne cte d, yo u will lo se 6 d Bs in level.
A b ette r m eth od for usin g u nb ala nced so urce s is sho wn b e lo w. Th is is sim ila r to th e con ne ction fo r ba la n ce d lin es, b ut
p in 3 is con n ecte d to th e shield a t the sou rce . T he h um an d n oise re je ction for th e cab le is e qu iva le nt to th at for a
b alan ce d lin e . To m inimize hu m in th e a ud io , u se ba la nce d in p uts wh e ne ve r p ossib le .
Unbalanced line connection
Balanced line with unbalanced equipment
For two-channel (stereo) operation, use both channels A and B. For tandem stereo or bridged mono operation, use
only one of the inputs. See
7.2

Connecting speakers

S pe aker co nn e ctio ns are m ad e via the tw o N eu trik NL 4F C S pe akon con ne cto rs. T he S pe akon co nn e ctor is d esign ed
for h ig h p ow e r lo ud spe ake r use a nd m e ets all w orldw id e safety req uirem en ts.
C on ne ction s:
The Speakons are wired:
The right Speakon, Channel A, has both channel A and B outputs available, so is useful for bridging and bi-amp
operation (see bridged mono operation on page 8). The left Speakon, Channel B, carries only the channel B
output.
Channel A and B into two separate
Speakons.
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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Unbalanced inputs

operating modes
Channel A
Pin +1, Pin - 1 = Output A
Pin +2, Pin - 2 = Output B
Channel B
Pin +1, Pin -1= Output B
Martin Audio – MA4.2s Amplifier
for more details.
Channel A and B into one Speakon
(Stereo and Bi-amp)
13
Bridged mono
GUIDES