Portable Power Stations for L1 Systems

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L1 Model II This information is applicable to the L1®  Model II
T8S This information is applicable to the T8S ToneMatch® mixer
T4S This information is applicable to the T4S ToneMatch® mixer
T1 This information is applicable to the T1 ToneMatch® audio engine

Jackery Explorer Power Station 500

Overview

These are preliminary tests using a Jackery Explorer Power Station 500 to run an L1 Model II with ToneMatch Mixer[1], two B1 bass modules, and Kemper Stage electric guitar processor.

Preliminary results - this should provide power for moderate-to-high volume for at least five hours for a L1 Model II. I expect you could get similar results with an L1 Compact. Note: The L1 Model II can cover at least four times the area of an L1 Compact.

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

System as Tested

L1 Model II with two B1
Kemper Profiler Stage
  • SPL measured at one meter, C-weighted

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


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: