Palmer DELTA 4PL - 4-channel passive line splitter with audio via Cat cable
DELTA 4PL is a passive 4-channel line splitter for professional audio applications and part of the Palmer Audio over Cat ecosystem. It reliably distributes line-level signals to multiple outputs without the need for external power.
DELTA 4PL complies with the widely used AES72 Type 5E standard, is fully compatible with such Audio-over-Cat systems, and integrates easily into existing infrastructures.
Each of the four channels has one THRU output and two galvanically isolated, transformer-balanced XLR outputs. Balanced signal routing with impedance matching ensures clean transmission and eliminates noise from ground loops. All 4 channels can also be transmitted via a single Cat cable, which is particularly useful in fixed installations with limited or discreet cable routing.
The rugged 1U 19-inch chassis is designed for standard rack mounting in both permanent and mobile environments. The reversible rack ears allow convenient mounting from the front or rear for easier access to the most frequently used connections.
Ideal for installations, studios and touring setups where passive signal splitting, Audio-over-Cat compatibility and maximum operational reliability are essential. DELTA 4PL delivers clean, unaltered sound and robust performance. Developed in Germany. Made in Europe.
- 4 independent line splitters in a solid 19" housing (1U)
- 3 balanced XLR outputs per channel (1x THRU output and 2x galvanically isolated)
- Balanced line-level splitting with impedance matching
- Audio over Cat In- and output (AES72 Type 5E) for forwarding all signals via a single Cat cable
- Eliminates ground loop hum thanks to galvanic transformer isolation
- Designed to handle high-level line signals up to +20dBu without distortion
- Extremely fail-safe, no power supply required
- Pure and unaltered low-noise audio
- Engineered in Germany, Made in Europe
General
| Type | Passive |
| Material | Steel sheet |
| Isolated transformer | Yes |
| Transformer Ratio | 1:1:1 |
| Ground Lift | Yes |
| Number of inputs | 4 |
| Number of outputs | 12 |
| Number of channels | 4 |
Inputs
| Input signal type | AES72 (type 5E) |
| Input signal type | Balanced |
| Max. input level (< 1% THD, rel. 20 Hz) | 20 dBu |
| Max. input level (< 1% THD, rel. 1 kHz) | 20 dBu |
| Input impedance (Ra = 1 kΩ) | 10 kΩ |
Outputs
| Output signal type | AES72 (type 5E) |
| Output signal type | Balanced |
| Number of line outputs | 2 |
| Output impedance (Ra = 600 Ω) | 300 Ω |
| Linked outputs per channel | 1 |
Signal processing
| Max. THD (1 kHz, +4 dBu, unity, unweighted) | 0.04 % |
| Max. THD (30 Hz, +4 dBu, unity, unweighted) | 1.5 % |
| Max. IMD (SMPTE, 7 kHz, 4:1, +4 dBu) | 0.02 % |
| Max. IMD (SMPTE, 60 Hz, 4:1, +4 dBu) | 0.02 % |
Environmental
| Maximum air humidity (non-condensing) | 80 % |
Dimensions & weight
| Width | 483 mm |
| Height | 44 mm |
| Depth | 176 mm |
| Rack width | 19" |
| Rack height | 1 U |
| Weight | 3.35 kg |
If you have questions about this product before placing an order, please contact our staff – we get back to you as quickly as possible, and always within 24 hours on weekdays.
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