Portable Power Stations for L1 Systems

L1 Model II

T8S

T4S

T1 

Overview

These are the results of using a Jackery Explorer Power Station 500 to run an L1 Model II with ToneMatch Mixer, 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 a L1 Model II with a ToneMatch Mixer.

• You should get similar results with an L1 Compact. Note: The L1 Model II can cover at least four times the area of an L1 Compact.
• Initial tests with the L1 Pro 8 suggest you should get similar results and better results if you use the internal mixer on the L1 Pro 8.

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

• Model II with two B1 bass modules
• T8S ToneMatch Mixer
  • ToneMatch Power Supply
• 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

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 (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.

Minimum Requirements

• Pure Sine Wave 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 Compact
  Note: The L1 Compact power draw is similar to the L1 Model II for a given SPL
  • L1 Compact (60 watts at 100 dB) + T4S
  • 440 watt hours / (60 + 20) watts = 5.5 hours
• If two L1 Compacts are required to do the job, use an L1 Model II (or L1 Model 1S)

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