SPECIFICATIONS
Maximum surge current (M-8, M-8L, M-8D):
4,500 amps
Current rating:
15 amps (1800 watts at 120 VAC)
Noise attenuation (M-8, M-8L, M-8D):
Transverse mode: Greater than 50 dB, 1 to
100 MHz
Line Cords:
6 ft. captive, 14 AWG, with 3-conductor
Edison Plug
Mechanical:
Dimensions(M-8, M-8L, M-8D):
1.75” H x 19” W x 7.5” D.
Dimensions(M-10):
1.75” H x 19” W x 3.96” D.
Weight: 5 lbs (2.3 kg).
Lamps (if present):
2 x 5 watts
AC Voltmeter (if present):
Range 60 to 150 VAC; accuracy +/- 2 VAC
Construction: Steel chassis, black painted
Operating Voltage:
90 to 140 VAC
Power Consumption:
M-8, 6 watts
Spike Protection Modes (M-8, M-8L, M-8D):
Line to neutral
M-8L, 14 watts
M-8D, 14 watts
M-10, 0 watts
Spike Clamping Voltage(M-8, M-8L, M-8D):
188 Vpk @ 3,000 amps, (133 VAC RMS)
Safety Agency Listings:
TUV, TUV-C
Furman Sound, Inc.
1997 South McDowell Blvd.
Petaluma, California 94954-6919 USA
Phone: 707-763-1010 Fax: 707-763-1310
E-mail: [email protected]
111904-D
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THE FURMAN MERIT SERIES
THE FURMAN MERIT SERIES
IMPLIED, INCLUDING BUT NOT LIMITED
TO THE IMPLIED WARRANTIES OF
I N T R O D U C T I O N
S E R V I C E
4. The Merit Series units should only be
MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE. Manufacturer
does not warrant against damages or defects
arising out of improper or abnormal use of
handling of the Product; against defects or
damages arising from improper installation,
against defects in products or components
not manufactured by Manufacturer, or
against damages resulting from such non-
Manufacturer made products or components.
This warranty shall be cancelable by
Manufacturer at its sole discretion if the
product is modified in any way without written
authorization from Furman Sound. This
warranty also does not apply to Products upon
which repairs have been affected or attempted
by persons other than pursuant to written
authorization by Manufacturer.
Before returning any equipment for repair,
please be sure that it is adequately packed
and cushioned against damage in shipment,
and that it is insured. We suggest that you
save the original packaging and use it to ship
the product for servicing. Also, please enclose
a note giving your name, address, phone
number and a description of the problem.
Thank you for purchasing a Furman Merit
Series Power Distributor or Conditioner, and
congratulations on your choice. The Merit
Series power conditioners feature excellent
surge protection as well as RFI / EMI filtration.
connected to a 120 VAC, 60Hz, 15 amp
grounded electrical outlet. Do not defeat the
ground or change polarization of the power
plug.
5. Route the power cord and other cables so
that they are not likely to be walked on, tripped
over, or stressed. Pay particular attention to
the condition of the cords and cables at the
plugs, and the point where they exit your Merit
Series unit. To prevent risk of fire or injury,
damaged cords and cables should be replaced
immediately.
SAF E T Y I N F O R MAT I O N
To obtain best results from your Furman Merit
Series unit, please read this manual carefully
before using.
NOTE: All equipment being returned for
repair must have a Return Authorization (RA)
Number. To get an RA Number, please call the
Furman Service Department: (707) 763-1010,
ext. 121. Please display your RA Number
prominently on the front of all packages.
WA R N I N G
To reduce the risk of electrical shock, do not
expose this equipment to rain or moisture.
Dangerous high voltages are present inside
the enclosure. Do not remove the covers.
Refer servicing to qualified personnel only.
The lightning flash with an arrowhead symbol
is intended to alert the user to the presence
of un-insulated dangerous voltage within the
product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock.
6. Clean your Merit Series unit with a damp
cloth only. Do not use solvents or abrasive
cleaners. Never pour liquid on or into the unit.
7. Your Merit Series unit should be serviced by
qualified service personnel when:
THIS WARRANTY IS EXCLUSIVE. The sole
and exclusive obligation of Manufacturer shall
be to repair or replace the defective Product
in the manner and for the period provided
above. Manufacturer shall not have any other
obligation with respect to the Products or
any part thereof, whether based on contract,
tort, strict liability or otherwise. Under no
circumstances, whether based on this Limited
Warranty or otherwise, shall Manufacturer be
liable for incidental, special, or consequential
damages. Manufacturer’s employees or
representatives’ ORAL OR OTHER WRITTEN
STATEMENTS DO NOT CONSTITUTE
WARRANTIES, shall not be relied upon by
Purchaser, and are not a part of the contract
for sale or this limited warranty. This Limited
Warranty states the entire obligation of
• The power supply cord or the plug has been
frayed, kinked, or cut.
• Objects have fallen or liquid has spilled into
the unit.
• The unit has been exposed to rain or other
moisture.
• The unit does not appear to operate normally.
• The unit has been dropped, or the enclosure
has been damaged.
IMPORTANT SAFETY
INSTRUCTIONS
(Please read prior to installation)
1. Please read and observe all safety and
operating instructions before installing your
Merit Series unit. Retain these instructions for
future reference.
• The retractable lights have failed.
8. Your Merit Series unit requires that a safety
ground be present for proper operation. Any
attempt to operate the unit without a safety
ground is considered improper operation and
could invalidate the warranty.
2. Your Merit Series unit should not be used
near water – for example, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet
basement, near a swimming pool, etc.
Manufacturer with respect to the Product. If
any part of this Limited Warranty is determined
to be void or illegal, the remainder shall remain
in full force and effect.
9. Do not attempt to service your Merit Series
unit beyond what is described in this manual.
All other servicing should be referred to
qualified service personnel.
3. Do not place your Merit Series unit near
heat sources such as radiators, heat registers,
stoves, or other appliances that produce heat.
2
5
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THE FURMAN MERIT SERIES
THE FURMAN MERIT SERIES
frequencies than the 50 or 60 Hz AC line, it can
be effectively reduced through use of low-pass
filtering.
2.) Symptom: No power to the AC outlets,
The M-8L and M-8D utilize a dimmer control
F EATU R E S
for the two retractable front panel light tubes.
The dimmer knob controls the brightness
of both light fixtures. Turn it clockwise to
increase brightness; turn it counterclockwise
to decrease brightness. When the lights
are not in use, we recommend turning the
racklight’s switch to off to better maximize the
life of the bulbs.
Possible Cause: Either the AC outlet to which
your Merit Series device is connected has
no AC voltage present, or the unit has been
subjected to a sustained voltage in excess of
400 Volts.
M-10
The M-10 power distributor is a convenient way
to power your rack. It provides 10 outlets on its
rear panel and carries a 15 amp rating with a
circuit breaker.
ONE YEAR LIMITED
WARRANTY
Action Needed: Plug the Merit Series unit into
an AC receptacle where AC voltage is present.
If the problem persists, the protection circuit
may be damaged, and require factory service.
Furman Sound, Inc., having its principal place
of business at 1997 South McDowell Blvd.,
Petaluma, CA 94954 (“Manufacturer”) warrants
its Merit Series (the “Product”) as follows:
M-8
The M-8 power conditioner provides 9 switched
outlets for powering equipment. It not only
protects anything plugged into it from spikes
and surges, but also has a built in AC noise
filter to rid the system of RFI / EMI interference.
This allows equipment to function better and
last longer.
Digital Voltmeter: (M-8D)
Furman’s digital voltmeter continually
measures incoming voltages within a typical
tolerance of +/-2VAC. It should be noted
that the voltage reading is incoming. No
adjustment should be necessary on these
units.
Manufacturer warrants to the original
DEFINITIONS
Purchaser of the Product that the Product
sold hereunder will be free from defects in
material and workmanship for a period of one
year from the date of purchase. The Purchaser
of the product is allowed fifteen days from
the date of purchase to complete warranty
registration by mail or on-line at the Furman
website. If the Product does not conform to this
Limited Warranty during the warranty period
(as herein above specified), Purchaser shall
notify Manufacturer in writing of the claimed
defects. If the defects are of such type and
nature as to be covered by this warranty,
Manufacturer shall authorize Purchaser to
return the Product to the Furman factory or to
an authorized Furman repair location. Warranty
claims should be accompanied by a copy of
the original purchase invoice showing the
purchase date; this is not necessary if the
Warranty Registration was completed either via
the mailed in warranty card or on-line website
registration. Shipping charges to the Furman
factory or to an authorized repair location must
be prepaid by the Purchaser of the product.
Manufacturer shall, at its own expense, furnish
a replacement Product or, at Manufacturer’s
option, repair the defective Product. Return
shipping charges back to Purchaser will be
paid by Manufacturer.
SPIKE: This is a pulse of energy on the
power line. Spikes can have voltages as
high as 6000 volts. Though they are usually
of very short duration, the energy they
M-8L
NOTE: The Merit Series units do not
In addition to features of the M-8, the M-8L
features incandescent rack lights. A dimmer
control for the rack lights allows the user to
adjust the level of illumination or simply switch
the lights off. The M-8L has a master switch for
all outlets that glows red when the power is on.
The front-panel circuit breaker can be quickly
and easily reset should the unit be overloaded.
The M-8L also features 5.5 feet of 14 gauge
heavy-duty power cable.
compensate for high or low line voltage. If
you frequently move your rack to different
locations, derive power from generators, use
long extension cords, travel internationally, or
are in an area prone to brownouts, you may
benefit from the use of one of Furman’s AC
Line Voltage Regulators.
contain can be considerable, enough to
damage sensitive solid-state components
in audio and computer equipment. Spikes
can also foul switch contacts and degrade
wiring insulation. They are an unavoidable
component of electric power. They are caused
unpredictably by electric motors switching
on or off (on the premises or outside), utility
company maintenance operations, lightning
strikes and other factors. Spikes (also called
surges or transients) are absorbed by special
components in the Merit Series to provide safe
voltage levels to protect your equipment.
On/Off Rocker Switch:
This 15 amp capacity power switch is
specifically designed to stand up to the
enormous high inrush current demands of
many Power Amplifiers. Additionally, the semi-
transparent rocker lights when switched to the
“ON” position.
M-8D
In addition to all the features of the M-8 and
M-8L, the M-8D offers a laboratory precision
digital meter that displays incoming voltage in 1-
volt steps. The voltmeter’s accuracy is ±2 volts.
RFI/EMI INTERFERENCE: Noise from RFI
(Radio Frequency Interference) or EMI (Electro
Magnetic Interference) involves lower voltages
and less energy than is found in spikes, but it is
continuous rather than transient in nature. It is
not likely to cause damage, but it can certainly
be annoying, producing static in audio circuits,
“snow” on video screens, or garbled data in
computers. Noise can be introduced into AC
lines by nearby radio transmitters, certain kinds
of lighting, electric motors, and other sources.
Because noise occurs at higher
TROUBLESHOOTING GUIDE
The M-8D has a master switch for all outlets
that glows red when the power is on. The front-
panel circuit breaker can be quickly and easily
reset should the unit be overloaded. The M-8D
also features 5.5 feet of 14 gauge heavy-duty
power cable.
1.) Symptom: No power to the AC outlets.
Possible Cause: Circuit breaker has tripped
due to excessive load.
Action Needed: Remove one piece of
equipment from the Merit Series unit, and push
the square re-set tab into the Circuit breaker
bezel.
O PE RATI O N
THE FOREGOING IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR
Retractable Rack Lights and Dimmer Control:
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