The Central Station PLUS from Presonus is a studio control center that allows for switching between three sets of speakers from three sets of stereo analog input sources, and two stereo digital S/PDIF sources, while removing cable clutter from the desktop. The control center delivers all the key features needed for managing monitors in a commercial or project studio.
The main unit features a pair of line-level main outputs, a pair of line-level cue outputs, and two headphone amplifiers with individual level controls. The speaker outputs each feature individual front panel trim pots that are recessed to avoid accidents. Using the onboard talkback microphone or connecting an optional dynamic microphone to the XLR talkback input allows the engineer to communicate with the musicians over the headphone and cue buses.
The cue signal is automatically dimmed when using the talkback microphone, and a jack is provided for adding an optional footswitch for hands-free talkback operation. A mono switch sums the stereo source for checking for phase problems, and a dim switch reduces the speaker output by 16 dB. Additionally, the speakers can be completely muted.
Accurate metering enables monitoring of input levels via dual, 30-segment, tri-colored, fast-acting, peak-hold LED meters, which can be switched to display dBu and dBfs. A clear switch can clear any peak-hold indicators. And since a monitor-control system should be as sonically transparent as possible, the company chose an audiophile-quality, passive signal path with no op-amps or ICs, and equipped the S/PDIF inputs with high-definition, 24-bit/192 kHz D/A converters.
The included CSR-1 remote provides remote-control of the Central Station's main volume, input select, output select, talkback, mute, dim, and mono functions. Being a rack-mount device, with only one multi-conductor cable running to the remote control on the desktop, all of the cabling is in the back of the rack.
| Inputs |
2 x 1/4 " TRS phone Left (TRS 1 and 2) 2 x 1/4 " TRS phone Right (TRS 1 and 2) 2 x RCA phono Aux 1 x 1/4" TRS phone Talkback Footswitch (optional) |
| Input Impedance |
TRS: 2kΩ to 5kΩ (speaker load and trim level dependent) RCA: 8kΩ |
| Digital Inputs |
1 x TOSLink optical S/PDIF 1 x RCA coaxial S/PDIF |
| Sample Rates | 44.1, 48, 88.2, 96, 176.4 and 192 kHz |
| Outputs |
Speaker 3 x 1/4" TRS Left, passive balanced (active impedance balanced when swiched to mono) 3 x 1/4" TRS Right, passive balanced (active impedance balanced when swiched to mono) Main 1 x 1/4" TRS phone Left (active balanced) 1 x 1/4" TRS phone Right (active balanced) Cue 1 x 1/4" TRS phone Left (active impedance balanced) 1 x 1/4" TRS phone Right (active impedance balanced) 2 x 1/4" TRS phone Headphones (active stereo) |
| Output Impedance | 51Ω |
| Maximum Output Level |
Headphones: 150 mW per channel @ 60Ω D/A Converter: +18 dBu (active balanced) |
| Gain Range |
Aux Input: -90 dB to +20 dB Speaker Output: -90 dB to 0 dB Cue Output: -90 dB to 0 dB |
| Attenuation |
Speaker Dim: -30 dB Cue Dim: -30 dB (talkback activiated) |
| Dynamic Range | D/A Converter: >117 dB |
| SNR |
TRS Inputs: >140 dB Aux Inputs: >115 dB (1 kHz @ 0 dBu, unity gain) |
| THD + N |
TRS Inputs: <0.0005% (1 kHz @ 0 dBu) Aux Inputs: <0.002% (1 kHz @ 0 dBu, unity gain) Main Outputs: <0.0025% Cue Outputs: <0.003% (1 kHz @ 0 dBu) Headphones: 0.015% (150 mW per channel @ 60Ω) D/A Converter: <0.0025% (1 kHz @ 1 dBfs) |
| Frequency Response |
TRS Inputs: >1MHz Aux Inputs: 10 Hz to 50 kHz, -0.5 dB Main Outputs: 10 Hz to 50 kHz, -0.5 dB Cue Outputs: 10 Hz to 50 kHz, -0.5 dB Headphones: 10 Hz to 50 kHz, +1.0 dB |
| Input Meters |
Type: Dual 30-segment LED with peak hold Range: -48 dB to +18 dB (-66 dBfs to 0 dBfs) Accuracy: >0.25 dB Frequency Range: 10 Hz to 22 kHz Calibration Range: +/-18 dB |
| Talkback Mic |
Internal Type: Electret Condenser Sensitivity: -42 dB Mic Preamp Gain Range: +15 dB to +55 dB |
| Talkback Mic Input |
External Dynamic Type: 1 x XLR balanced Input Impedance: 2.4kΩ |
| Power Requirements |
12~18V DC via included external power adapter (US) 40 VA consumption |
| Dimensions (WxDxH) |
Main Chassis: 19 x 6.25 x 1.75" (483 x 159 x 45 mm) Power Supply: 2.5 x 4 x 2.3" (64 x 102 x 58 mm) Remote: 2.4 x 5.75 x 0.4" (61 x 146 x 10 mm) |
| Weight |
Main Chassis: 5 lb (2.3 kg) Power Supply: 2.5 lb (1.1 kg) Remote: 1.25 lb (0.6 kg) |