Meyer Sound DS-2P User Manual

5
Current Requirements
The DS-2P presents a dynamic load to the AC mains
which causes the amount of current to fluctuate between
quiet and loud operating levels. Since different types of
cables and circuit breakers heat up (and trip) at varying
rates, it is essential to understand the types of current
ratings and how they correspond to circuit breaker
and cable specifications.
The maximum continuous RMS current is the maximum
RMS current over a duration of at least 10 seconds. It is
used to calculate the temperature increase in cables,
which is used to select cables that conform to electrical
code standards. It is also used to select the rating for
slow-reacting thermal breakers.
The maximum burst RMS current is the maximum RMS
current over a one second duration. It is used to select
the rating for most magnetic breakers.
The maximum instantaneous peak current during burst
is used to select the rating for fast-reacting magnetic
breakers and to calculate the peak voltage drop in long
AC cables according to the formula
Vpk
drop
= Ipk x Rtotal cable
Use the table below as a guide to select cables and circuit
breakers with appropriate ratings for your operating volt-
age.
sgnitaRtnerruCP2-SD
V511 V032 V001
SMRsuounitnoC.xaM
A8
SMR
A4
SMR
A01
SMR
SMRtsruB.xaM
A51
SMR
A8
SMR
A81
SMR
tsruBgniruDkaeP.xaM
A22
KAEP
A11
KAEP
A52
KAEP
The minimum electrical service amperage required by a
system of Meyer speakers is the sum of their maximum
continuous RMS currents. We recommend allowing an
additional 30% above the minimum amperage to prevent
peak voltage drops at the service entry.
TROUBLESHOOTING NOTE: In the unlikely case that
the circuit breakers trip (the white center buttons pop
out), do not reset the breakers! Contact Meyer Sound for
repair information.
Safety Issues
Pay close attention to these important electrical and
safety issues.
Use a power cord adapter to drive the DS-2P
from a standard 3-prong outlet (NEMA 5-15R;
125 V max).
earth
ground
chassis
ground
The DS-2P requires a grounded outlet. Always
use a grounding adapter when connecting to
ungrounded outlets.
Do not use a ground-lifting adapter or cut the AC
cable ground pin.
Keep all liquids away from the DS-2P to avoid hazards
from electrical shock.
Do not operate the unit if the power cables are frayed or
broken.
Tie-wrap anchors on the amplifier chassis provide strain
relief for the power and signal cables. Insert the plastic
tie-wraps through the anchors and wrap them around
the cables.

Meyer Sound DS-2P Specifications

Acoustical

frequency response	± 4 dB 50 – 160 Hz
phase response	± 60° 60 – 200 Hz
maximum SPL (music as source)	140 peak
maximum SPL (pink noise as source)	136 dB continuous; 140 peak
dynamic range	> 120 dB
coverage	120° H x 120° V

Transducers

low frequency transducer	Two 15" diameter MS-15 cone

Audio Input

input type impedance	10 kΩ
connector	XLR (A-3) male and female
nominal input level	+4 dBu (1.23 Vrms)

Amplifiers

amplifier type	Complementary power MOSFET output stages class AB/H
burst capability	1240 Watts (620 Watts per channel)
THD, IM, TIM	< .02 %

AC Power

connector	250 V NEMA L6-20P / IEC 309 Twistlock male receptacle
automatic voltage selection	85 – 134 V / 165 – 264 V; 50 Hz / 60 Hz
max continuous RMS current (115 V)	8 A
max continuous RMS current (230 V)	4 A
max continuous RMS current (100 V)	10 A
max burst RMS current (115 V)	15 A
max burst RMS current (230 V)	8 A
max burst RMS current (100 V)	18 A
max peak current during burst (115 V)	22 Apk
max peak current during burst (230 V)	11 Apk
max peak current during burst (100 V)	25 Apk
soft-current turn-on inrush current	< 12A @115V

Physical

dimensions	21.25” W x 56.75” H x 30” D
weight	221 lb (100 kg)
shipping weight	267 lb (121 kg)