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Sonifex CM-ULX1 Unbalanced to Balanced Converter, Passive, Phono to XLR
Vendor: Sonifex
Sonifex CM-ULX1 Unbalanced to Balanced Converter, Passive, Phono to XLR
This product facilitates the connection of a stereo unbalanced line input via phono connectors to a balanced line output through 2 x male XLRs. It features transformer balancing with a 1:2 ratio, resulting in the addition of 6dB of gain to the input to aid in interfacing with the higher signal levels typical of professional outputs. Serving as a passive counterpart to the RB-UL1, this unit offers an alternative to directly wiring an unbalanced output into a balanced input. By placing this box near the unbalanced output (prior to the cable run to the balanced input), the connection can benefit from the input device’s common mode rejection capabilities, reducing noise and interference.
Connectors & Controls
RCA Phono Inputs
This unit uses a stereo unbalanced line phono connector with the following connections:
| Pin Type | Connection |
| White Tip: | Left |
| White Screen: | Ground |
| Red Tip: | Right |
| Red Screen: | Ground |
Analogue Outputs CM-ULX1
The stereo analogue balanced line output is on two male 3 pin XLR connectors with the following pin assignments:
Pin 1: 0V Common
Pin 2: Phase
Pin 3: Non Phase
Audio Specification |
|
| Input/Output Level Ratio: | 1:2 |
| Input/Output Impedance Ratio: | 1:4 |
| Max Input Level: | +22dBu |
| Max Output Level: | +28dBu |
| Frequency Response: | 20Hz to 20kHz, +0/-0.5dB |
| Noise: | <-100dBu A-wgtd |
| Distortion Ref +8dBu (Output): | <0.02% |
Connections |
|
| Stereo Unbalanced Line Input (CM-ULR1 & CM-ULX1): | 2 x RCA phono connectors |
| Balanced Line Output (CM-ULX1): | 2 x male XLRs |
Equipment Type |
|
| CM-ULX1: | Unbalanced to balanced audio converter, XLR output |
Physical Specification |
|
| Dimensions (Raw): | 7.7cm (W) x 8.3cm (D) x 4.2cm (H) 3.0” (W) x 3.3” (D) x 1.7” (H) |
| Dimensions (Boxed): | 12.7cm (W) x 22.9cm (D) x 7.6cm (H) 5” (W) x 9” (D) x 3” (H) |
| Weight: | Nett: 0.22kg Gross: 0.33kg Nett: 0.49lbs Gross: 0.73lbs |
