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.