Portable Power Stations for L1 Systems

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Revision as of 17:28, 28 February 2021 by ST (talk | contribs)
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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 the results of 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.

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[1].

Update - L1 Pro Systems (Pro8, Pro16, Pro32 with Sub 1)
I have repeated all the same real-life tests using the L1 Pro systems. The power consumption is almost identical to those shown for the L1 Model II with two B1s shown in the tables below.

ST (talk) 16:28, 28 February 2021 (EST)

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

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: