MAD Magnetic Audio Devices LT-PMS1B Active Loudspeaker

Description

MAD LT-PMS1B from Magnetic Audio Devices. I have charged and tested these units and they function as they should. They come with a chargers but the cord is missing. It is a basic cored that you can get at Best Buy for about bucks.
**********I only have 1 adapter cord so the first purchase gets that cord***********
Here is some info from the MFG website:
The LT-PMS (
L
ong
T
hrow-
P
lanar
M
agnetic
S
peaker) series is a collection of      speakers designed specifically for long throw, speech transmission.  Tailored with a      frequency response that is perfectly match for the voice range, the  LT-PMS planar      systems can transmit a live or prerecorded spoken message with perfect      articulation(1).  Even at maximum volume, the sound remains absolutely clear and      distortion is virtually undetectable.
The secret to the LT-PMS exceptional performance is the MAD-1 planar      driver.  This highly efficient, full range speaker when used in a single driver        configuration, has a frequency response from 180 Hz to 18 KHz.  In addition, the      diaphragm’s extremely low mass produces a lightning fast response which explains      why the LT-PMS systems have such exceptional clarity and intelligibility.  With just      one driver, the commanding power, throw distance, and vocal clarity from a      single speaker is startling.  When multiple drivers are used together in a single      enclosure, the acoustical results are absolutely staggering!
The seven speakers in this series are all built around the same MAD-1 driver.       The speaker’s model number indicates how many drivers are used in each unit.       As more drivers are combined together, two significant performance      characteristics change.  The speaker produced greater volume and the dispersion      pattern tapers down into a smaller, tighter area.  With a tighter pattern and      more available power, these speakers can produce a longer throw while      maintaining their clarity and volume.  Since the volume from planar speakers falls      off at a much lower rate than conventional speakers, typically 1.5 dB for each      doubling of distance, the potential working distance from the LT-PMS devices is      unmatched by any other product.
Actual distance and SPL performance may vary from the distances listed as a      result of adverse weather conditions, variable atmospheric conditions, variations      in the physical terrain, and other unpredictable human factors.