mxr ISO-BRICK M238 User Manual

92503018757REVA

M238 ISO-BRICK

™

POWER SUPPLY

CONTROLS

RED LED indicates bad input
power connection

WHITE LED indicates good
input power connection

POWER outputs power up
to 10 pedals

BLUE LEDs indicate good
output power connection

VOLTAGE controls set
voltage level of variable
6–15V power outputs

18V @ 2000mA power
input jack

M238 ISO-BRICK

™

POWER SUPPLY

DESCRIPTION

• 10 fully isolated outputs

• Quiet, noise-free operation

• Powers a wide range of pedal
types—digital and analog,
positive and negative ground

• Variable outputs can be used to
emulate drained battery effect

1

1

2

2

5

5

3

3

4

4

6

6

DIRECTIONS

• Connect included AC adapter into
the Iso-Brick Power Supply’s 18V
IN jack.

• Plug the AC adapter into a wall
outlet; the white power LED
will light.

• Connect up to six pedals requir­ing 9V power to the six 9V OUT
jacks using the included barrel­to-barrel cables. Be sure pedal’s
mA rating does not exceed
output’s indicated mA rating.

• Connect up to two pedals
requiring 18V power to the two
18V OUT jacks using the
included barrel-to-barrel cables.
Be sure pedal’s mA rating does
not exceed output’s indicated
mA rating.

• Two outputs provide controllable
voltage levels, from 6V to 15V.
Use VOLTAGE controls to adjust.
When using analog pedals requir-

POWER

The Iso-Brick Power Supply
requires an 18V regulated power
supply rated at 2000 mA, with

5.5mm x 2.1mm positive barrel,
negative center plug. The included
power adapter can utilize a wide
range of wall power, from 100–240V
at 47–63Hz. Comes with switchable
US/Japan, UK, EU, and
Australian plugs.

CONNECTION NOTES

• Included cables use industry
standard 5.5mm x 2.1mm posi­tive barrel, negative center
polarity plugs.

• Each output features a blue LED.
When lit, this LED indicates a
good connection. If short-circuit­ed or overloaded, this LED will
turn off.

• The Iso-Brick Power Supply has
six 9V outputs: two can handle
450mA, two can handle 300mA,
and two can handle 100mA.

• Two 18V outputs can handle
250mA each.

• Two variable 6V–15V outputs can
handle 250mA each.

DUNLOP MANUFAC TURING, INC.

P.O. BOX 846, BENICIA, CA 94510 U.S. A.

TEL: [phone] FAX : [phone]

TROUBLESHOOTING

The power LED fails to light.

• Dead AC outlet. Try plugging into
another outlet, or test the outlet
with another device like a lamp.

• Faulty connection. Double check
plugs to make sure they are
inserted securely.

• Short-circuited output. Discon­nect the cable from the output
whose blue LED is off. Wait 5 to
10 seconds for the unit to reset,
indicated when the blue LED
comes on.

Power provided to some effects,
but not others.

• Incompatible power plug. Check
that the dimensions and polarity
of the pedals are compatible with
the provided cables.

• Faulty cord. Check by swapping
the power cable with another
known good cable.

• Faulty jack on Iso-Brick Power
Supply. Check by plugging the
power cable into a different
DC jack.

• Faulty jack on the pedal.
Test by running the pedal off
battery power.

ing 9V power, VOLTAGE controls
can be used to reduce power and
emulate the effect a dying battery
has on certain pedals. Note: Not
all analog pedals will operate be­low 9V. Check with manufacturer
for operable voltage range. If your
pedal is sensitive to input volt­age level, use a voltmeter to set
output voltage before connect­ing pedal. Be sure pedal’s mA
rating does not exceed output’s
indicated mA rating.
WARNING: Some pedals may
be damaged if powered using
a voltage that exceeds the level
required by the manufacturer, e.g.
powering a 9V pedal with 15V or
18V. We highly recommend stay­ing at or below manufacturer’s
state voltage requirement. Dunlop
assumes no responsibility or
liability for equipment damage
caused by misuse of the
Iso-Brick Power Supply.

• All outputs may be used simulta­neously for a total power output
of 31.8 watts.

• Combining Outputs: Any output
may be combined with any other
output when stacked in series.
If combining outputs in parallel,
only outputs of the same voltage
may be used together.

• The Iso-Brick Power Supply’s
foldback current limiting circuit
(FCLC) provides ultimate protec­tion against power shorts and
overloads. Even at full load, the
Iso-Brick Power Supply operates
coolly and quietly as a fully regu­lated power supply.

SPECIFICATIONS

INPUT 18V @ 2 Amps
regulated supply (positive barrel
negative center 5.5mm x 2.1mm
plug)

OUTPUTS 6-15V @ 250mA (2)

18V @ 250mA (2)

9V @ 450mA (2)
9V @ 300mA (2)
9V @ 100mA (2)

(all positive barrel negative center

5.5mm x 2.1mm)