# Portable Power Stations for L1 Systems

## Overview

These are the results of using a Jackery Explorer Power Station 500 to run L1 Pro (various) and L1 Model II with ToneMatch Mixer^{[1]}, two B1 bass modules, and Kemper Stage electric guitar processor.

Conclusion - Jackery Explorer Power Station 500 should provide power for moderate-to-high volume for at least five hours for an L1 Pro or L1 Legacy system with a ToneMatch Mixer^{[1]}.

- You should get comparable results with an L1 Compact.
- The power consumption is similar for all models. The volume (Sound Pressure Level SPL) determines how much power you consume. The louder you run the system, the faster you deplete the power. For example, you might get 7 hours of music at 80 dBC SPL and only 2 hours at 110 dBC SPL.

- Update - L1 Pro Systems (Pro8, Pro16, Pro32 with Sub 1)
- I have repeated the same tests using the L1 Pro systems. The power consumption is comparable to that shown for the L1 Model II with two B1s shown in the tables below.
- The power consumption is similar for all models. The volume determines how much power you consume. The louder you run the system, the faster you deplete the power. For example, you might get 7 hours of music at 80 dBC SPL and only 2 hours at 110 dBC SPL.
- 28 February 2021

## Jackery Explorer Power Station 500 Specifications

- Lithium battery power: 518Wh/144,400mAh battery capacity,
- 500W Rated Power and 1000W Surge Power
- Pure Sine Wave AC
- 13 pounds
- Time to recharge using AC adapter - 8 hours
**Warning - the smaller Jackery Explorer Power Stations do not provide Pure Sine Wave AC power and are not recommended.**

## System as Tested

- Model II with two B1 bass modules
- T8S ToneMatch Mixer
- Kemper Profiler Stage
- Approximate draw 12 watts)
- The Kemper Profiler with Remote draws approximately 17 watts was not used for this discussion

- Program material: Rock music with ToneMatch Preset set to DJ/Playback High Volume

- SPL measured at one meter, C-weighted

- I have repeated the same tests using the L1 Pro systems. The power consumption is comparable to that shown for the L1 Model II with two B1s shown in the tables below.

## Results

Equipment | SPL dBC |
Draw on display |
Net Watts |
Estimated Run Time Hours |

Calculation 518 Watt-Hours x 85% / Draw in Watts = Run Time Hours | ||||

Jackery 500 | 0 | 0 | ||

AC Inverter engaged | 5 | 88.1 | ||

Power Bar with Surge Arrest | 7 | 2 | 62.9 | |

T1 with ToneMatch Power Supply | 17 | 10 | 25.9 | |

T4S with ToneMatch Power Supply | 20 | 13 | 22.0 | |

T8S with ToneMatch Power Supply | 25 | 18 | 17.6 | |

L1 Model II with 2 x B1 idle | 40 | 33 | 11.0 | |

L1 Model II with 2 x B1 + T1 idle | 49 | 42 | 9.0 | |

L1 Model II with 2 x B1 + T1 | 80 | 52 | 45 | 8.5 |

L1 Model II with 2 x B1 + T1 | 90 | 57 | 50 | 7.7 |

L1 Model II with 2 x B1 + T1 | 100 | 72 | 65 | 6.1 |

L1 Model II with 2 x B1 + T1 | 110 | 193 | 186 | 2.3 |

L1 Model II with 2 x B1 + T4S idle | 51 | 44 | 8.6 | |

L1 Model II with 2 x B1 + T4S | 80 | 54 | 47 | 8.2 |

L1 Model II with 2 x B1 + T4S | 90 | 61 | 54 | 7.2 |

L1 Model II with 2 x B1 + T4S | 100 | 75 | 68 | 5.9 |

L1 Model II with 2 x B1 + T4S | 110 | 200 | 193 | 2.2 |

L1 Model II with 2 x B1 + T8S idle | 56 | 49 | 7.9 | |

L1 Model II with 2 x B1 + T8S | 80 | 59 | 52 | 7.5 |

L1 Model II with 2 x B1 + T8S | 90 | 66 | 59 | 6.7 |

L1 Model II with 2 x B1 + T8S | 100 | 80 | 73 | 5.5 |

L1 Model II with 2 x B1 + T8S | 110 | 205 | 198 | 2.1 |

Sub1 Subwoofer Startup | Idle/Startup | 24 | 20 | 15 |

Sub1 Subwoofer | 110 | 205 | 198 | 2.1 |

### Run Time Calculation Examples

518 watt hours x 85% (for inverter efficiency) = 440 watt hours.

Example: L1 Model II + 2 B1 + T4S at 100 dB

- 440 watt hours / 75 watts = 5.9 hours

Add draw from Kemper Profiler Stage at 12 watts

- 440 watt hours / (75 + 12) watts = 5.0 hours

If using a T8S instead of T4S add 5 watts to draw

- 440 watt hours / (75 + 12 + 5) watts = 4.8 hours

L1 Compact^{[2]} (60 watts at 100 dB) + T4S

- 440 watt hours / (60 + 20) watts = 5.5 hours

## Remarks

Occasionally I perform outdoors in settings where an S1 Pro system doesn't provide adequate coverage. I wanted a solution to power an L1 Compact and a ToneMatch Mixer^{[1]}.

- Minimum Requirements

- Pure Sine Wave
^{[3]}inverter - Minimum run time at moderate volume (85 dBC SPL) 5 hours

The smallest capacity unit I could find was the Jackery Explorer Power Station 500.

Here's my rationale that led me to test using the L1 Model II.

For most outdoor gigs:

- If one S1 Pro system will do the job - use one S1 Pro system
- If two S1 Pro systems are required to do the job, use an L1 Pro8 or L1 Compact

Note: The L1 Pro8 / L1 Compact power draw is similar to the L1 Pro16 / L1 Pro 32 / L1 Model II for a given SPL- L1 Compact
^{[4]}(60 watts at 100 dB) + T4S - 440 watt hours / (60 + 20) watts = 5.5 hours

- L1 Compact
- If two L1 Compacts are required to do the job, use an L1 Model II (or L1 Model 1S)
- If two L1 Pro8s are required to do the job, use an L1 Pro16 or L1 Pro 32

- ↑
^{1.0}^{1.1}^{1.2}T4S ToneMatch mixer or T8S ToneMatch mixer or T1 ToneMatch Audio Engine - ↑ L1 Compact current draw
- ↑ Pure Sine Wave
- ↑ L1 Compact current draw