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Sonifex CM-ULR1 Unbalanced to Balanced Converter, Passive, Phono to RJ45
Vendor: Sonifex
Sonifex CM-ULR1 Unbalanced to Balanced Converter, Passive, Phono to RJ45
This product facilitates the connection of a stereo unbalanced line input via phono connectors to a balanced line output through an RJ45 with StudioHub+™ pinout. 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. Placing this box near the unbalanced output (prior to the cable run to the balanced input) allows the connection to benefit from the common mode rejection capabilities of the input device, thereby 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-ULR1
The stereo balanced line output is on a female RJ45 connector with the following standard StudioHub+™ pin assignments:
| Pin No | Connection |
| 1 | Left Phase |
| 2 | Left Non-Phase |
| 3 | Right Phase |
| 4 | Ground |
| 5 | N/C |
| 6 | Right Non-Phase |
| 7 | N/C |
| 8 | N/C |
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-ULR1): | 1 x RJ45 female StudioHub+™ pinout |
Equipment Type |
|
| CM-ULR1: | Unbalanced to balanced audio converter, RJ45 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 |
