Lectrosonics wireless systems are popular companions to Sound Devices field mixers. Their construction and audio performance make a "kit" built with Sound Devices mixers and "Lectro" wireless very flexible, compact, and capable.

Many users interconnect the output of their SD mixer to the input of Lectro body-pack transmitters for a "wireless link" to the camera. Also, Lectro receivers regulary feed Sound Devices inputs. Interconnections for both these scenarios are notated below.

442 XLR & TA3 Balanced Outputs to Lectro UM200C Transmitter Input

XLR & TA3 Output TA5 Input
pin-1 pin-1
pin-2 pin-5
pin-3 pin-3 and 1
pin-4 and 2: No connection. Float shells of connectors.
Connection results in 40dB of attenuation into the transmitter. With 0 dBu tone on 442, 442 set to "Line", set "Audio Level" knob on transmitter so that "-20" LED on transmitter comes on then back off just a hair. This should correspond to the Audio Level knob on the UM200C at 2nd out of 9 tick marks. With this setting, full modulation of the UM200C occurs with a +20dBu output of the 442. MC35 Note: Lectro's standard MC-35 cable can be used, but only for the 442's balanced XLR outputs set to "-10".

442 XLR & TA3 Balanced Outputs to Lectro UM400 Transmitter Input

XLR & TA3 Output TA5 Input
pin-1 pin-1
pin-2 pin-5
pin-3 pin-3 and 1
pin-4 and 2: No connection. Float shells of connectors.
This connection results in 52 dB of attenuation into the transmitter. With 0 dBu tone on the 442, 442 set to "Line", set "Audio Level" knob on the transmitter so that "-20" Led on transmitter comes on then back off just a hair. This should correspond to the Audio Level knob on the UM400 at 6th out of 9 tick marks. With this setting, full modulation of the UM400 occurs with a +20dBu output of the 442. MC35 Note: Lectro's standard MC-35 cable can be used, but only for the 442's balanced XLR outputs set to "-10".

302 & MixPre Balanced XLR Outputs to Lectro UM200C Transmitter Input

XLR TA5 Input
pin-1 pin-1 and 3
pin-2 pin-5
pin-3 No connection
pin-4 and 2: No connection. Float shells of connectors.
Connection results in 40dB of attenuation into the transmitter. With 0 dBu tone on 442, 442 set to "Line", set "Audio Level" knob on transmitter so that "-20" LED on transmitter comes on then back off just a hair. This should correspond to the Audio Level knob on the UM200C at 2nd out of 9 tick marks. With this setting, full modulation of the UM200C occurs with a +20dBu output of the 442.

302 & MixPre Balanced XLR Outputs to Lectro UM400 Transmitter Input

XLR Output TA5 Input
pin-1 pin-1 and 3
pin-2 pin-5
pin-3 No connection
pin-4 and 2: No connection. Float shells of connectors.
Connection results in 52 dB of attenuation into the transmitter. With 0 dBu tone on the 442, 442 set to "Line", set "Audio Level" knob on the transmitter so that "-20" LED on transmitter comes on then back off just a hair. This should correspond to the Audio Level knob on the UM400 at 6th out of 9 tick marks. With this setting, full modulation of the UM400 occurs with a +20dBu output of the 442.

442/302 TA3 Tape Outputs (left channel, unbalanced) to Lectro UM200C/UM400 Transmitter Input

TA3 Output TA5 Input
pin-1 pin-1 and 4
pin-2 (Left) pin-5
Set levels such that a 0 dBu tone on mixer = -20 on transmitter.

442/302 TA3 Tape Outputs (right channel, unbalanced) to Lectro UM200C/UM400 Transmitter Input

TA3 Output TA5 Input
pin-1 pin-1 and4
pin-3 (Right) pin-5
Set levels such that a 0 dBu tone on mixer = -20 on transmitter.

442/MixPre Tape Outputs (left channel, unbalanced) to Lectro UM200C/UM400 Transmitter Input

1/8" Output TA5 Input
Sleeve pin-1 and 4
Tip pin-5
Set levels such that a 0 dBu tone on mixer = -20 on transmitter.

442/MixPre Tape Outputs (right channel, unbalanced) to Lectro UM200C/UM400 Transmitter Input

1/8" Output TA5 Input
Sleeve pin-1 and 4
Ring pin-5

Set levels such that a 0 dBu tone on mixer = -20 on transmitter.

UCR211 Receiver to Mixer Input

Use standard balanced mic cable to feed into balanced mixer inputs. (On RX software menu, +5 dBu means with full modulation, this will output a +5 dBu signal). Set software for max output of +10 dBu. Feed this into Line-Level input. While +5 dBu peak is actually a consumer level signal, it will work fine. If feeding into a mic level input, set software for -30 dBu.

UCR411 Receiver to Mixer Input

Same as above, but max output level is +5 dBu. Use this for line setting.