Mixing Consoles - S2-Power Supply
S2-PSU Power Supply (1U) (front view).
S2-PSU Power Supply
The new 1U sized S2-PSU is pin compatible with the original 2U sized S2-PSU power supply, so can be used as a straight like-for-like swap, using the same connection cables. The new units have a serial number greater than 16852 and have a great deal of improvements on the original design:
- Increased power efficiency, so that less power is drawn and therefore less heat generated.
- An improved over-current and over-voltage protection system to give increased reliability and stability.
- A dynamically controlled quiet cooling fan which is only switched on when required by the load conditions and temperature (greater than 50° C).
- A new 1U chassis so it takes up less space in a 19” rack.
- A fan failure indicator LED on the front panel so that in the unlikely event that the cooling system should fail, a visible warning is given with the LED flashing red.
Important Notes:
- Please note that ALL connections to the mixer should be made before powering up the S2-PSU, otherwise this could trigger the over-current protection. If the over-current protection kicks in, then the unit needs to be powered down for approximately a minute to reset the over-current protection.
- This 1U sized S2-PSU is incompatible with S2-PSUS power supply switchers with a serial number of 16948 or earlier. The S2-PSUS has been redesigned (from April 2011) to work with both 1U and 2U S2-PSU power supplies, but this is only for S2-PSUS switchers with a serial number higher than 16948. Contact Sonifex if you need to replace a 2U S2-PSU and are using an S2-PSUS power supply switcher - either a new version of the S2-PSUS will be required or a 2U S2-PSU power supply will need to be specifically requested.
- The fan is started and run briefly every few minutes to check that it is in operation and to ensure that it doesn’t freeze through lack of use over time.
| Dimensions (S2-PSU) | |
| (Raw): | 48.3cm (W) x 23cm (D) x 4.4cm (H) 19” (W) x 9” (D) x 1.7” (H) |
| (Boxed): | 51cm (W) x 41.5cm (D) x 17cm (H) 20” (W) x 16.3” (D) x 6.7” (H) |
| Weight (S2-PSU) | |
| Nett: 2.9kg Gross: 4.3kg Nett: 6.4lbs Gross: 9.5lbs |
S2-PSU Power Supply (1U) (rear view).
S2-PSUS Dual Power Supply Switcher
S2-PSUS Power Supply (front view).
The S2-PSUS is a passive power switcher which takes the power feeds from 2 x S2-PSU units and switches between them in the event of failure. Two trailing leads 0.5m in length connect to 2 x S2-PSU units. With LED failure indicators and GPI alarms, the S2-PSUS is the perfect dual redundant power supply module.
| Dimensions (S2-PSUS) | |
| (Raw): | 48cm (W) x 23cm (D) x 4.4cm (H) 19” (W) x 9” (D) x 1.7” (H) |
| (Boxed): | 55cm (W) x 39.3cm (D) x 8.5cm (H) 21.6” (W) x 15.5” (D) x 3.4” (H) |
| Weight (S2-PSUS) | |
| Nett: 1.58kg Gross: 2kg Nett: 3.5lbs Gross: 4.4lbs |
S2-PSUS Power Supply (rear view).

