KRK ROKIT E User Manual
USER GUIDE
ROKIT POWERED SERIES
NEAR FIELD
STUDIO MONITOR/SUBWOOFER
GUIDE
KRK SYSTEMS LLC.
9340 De Soto Ave.
Chatsworth, CA 91311 USA
HTTP://WWW.KRKSYS.COM
PAR T# LITK00017
Our mission is to innovate,
design and deliver superior
audio products that form the
bridge between an artistic
vision and a realized dream.
Warning: To reduce the risk of fire or electric shock, do not
expose this unit to rain or moisture.
The lightning flash with an arrowhead symbol within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
ìdangerous voltageî within the productí s enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying
the product.
Do not place this unit on an unstable cart, stand or tripod, bracket
or table. The unit may fall, causing serious injury to a child or adult
and serious damage to the unit. Use only with a cart, stand, tripod,
bracket or table recommended by the manufacturer or sold with
the unit. Any mounting of the device on a wall or ceiling should
follow the manufacturerís instructions and should use a mounting
accessory recommended by the manufacturer.
An appliance and cart combination should be moved with care.
Quick stops, excessive force and uneven surfaces may cause the
appliance and cart combination to overturn.
Read and follow all the safety and operating instructions before
connecting or using this unit. Retain this notice and the ownerís
manual for future reference.
All warnings on the unit and in its operating instructions should be
adhered to.
Do not use this unit near water; for example, near a bath tub,
washbowl, kitchen sink, laundry tub, in a wet basement or near a
swimming pool.
The unit should be installed so that its location or position does not
interfere with its proper ventilation. For example, it should not be
situated on a bed, sofa, rug or similar surface that may block the
ventilation openings; or placed in a built-in installation, such as a
bookcase or cabinet, that may impede the flow of air through its
ventilation openings.
The unit should be situated from heat sources such as radiators,
heat registers, stoves or other devices (including amplifiers) that
produce heat.
The unit should be connected to a power supply outlet only of the
voltage and frequency marked on its rear panel.
The power supply cord should be routed so that it is not likely to be
walked on or pinched, especially near the plug, convenience
receptacles, or where the cord exits from the unit.
Unplug the unit from the wall outlet before cleaning. Never use
benzine, thinner or other solvents for cleaning. Use only a soft
damp cloth.
The power supply cord of the unit should be unplugged from the
wall outlet when it is to be unused for a long period of time.
Care should be taken so that objects do not fall, and liquids are not
spilled into the enclosure through any openings.
This unit should be serviced by qualified service personnel when:
A. The power cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled into the unit; or
C. The unit has been exposed to rain or liquids of any kind; or
D. The unit does not appear to operate normally or exhibits a
marked change in performance; or
E. The device has been dropped or the enclosure damaged.
DO NOT ATTEMPT SERVICING OF THIS UNIT
YOURSELF. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL
Upon completion of any servicing or repairs, request the service
shopís assurance that only Factory Authorized Replacement Parts
with the same characteristics as the original parts have been used,
and that the routine safety checks have been performed to
guarantee that the equipment is in safe operating condition.
REPLACEMENT WITH UNAUTHORIZED PARTS MAY RESULT IN FIRE,
ELECTRIC SHOCK OR OTHER HAZARDS.
ATTENTION
POUR …VITER LES CHOC ELECTRIQUES, INTRODUIRE LA
LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE
CORRESPONDANTE DE LA PRISE ET POUSSER JUSQUíAU
FOND.
CAUTION
TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT FULLY INSERT.
If an indoor antenna is used (either built into the set or installed
separately), never allow any part of the antenna to touch the metal
parts of other electrical appliances such as a lamp, TV set etc.
CAUTION
POWER LINES
Any outdoor antenna must be located away from all power lines.
OUTDOOR ANTENNA GROUNDING
If an outside antenna is connected to your tuner or tunerpreamplifier, be sure the antenna system is grounded so as to
provide some protection against voltage surges and built-up static
charges. Article 810 of the National Electrical Code, ANSI/NFPA No.
70-1984, provides information with respect to proper grounding of
the mast and supporting structure, grounding of the lead-in wire to
an antenna discharge unit, size of grounding conductors, location of
antenna discharge unit, connection to grounding electrodes and
requirements for the grounding electrode.
a. Use No. 10 AWG (5.3mm2) copper, No. 8 AWG (8.4mm2)
aluminium, No. 17 AWG (1.0mm2) copper-clad steel or bronze
wire, or larger, as a ground wire.
b. Secure antenna lead-in and ground wires to house with stand-off
insulators spaced from 4-6 feet (1.22 - 1.83 m) apart.
c. Mount antenna discharge unit as close as possible to where lead-
in enters house.
d. Use jumper wire not smaller than No.6 AWG (13.3mm2) copper,
or the equivalent, when a separate antenna-grounding electrode
is used. see NEC Section 810-21 (j).
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL
CODE INSTRUCTIONS CONTAINED IN ARTICLE 810 - RADIO AND
TELEVISION EQUIPMENT.
NOTE TO CATV SYSTEM INSTALLER: This reminder is
provided to call the CATV system installerís attention to
Article 820-40 of the National Electrical Code that provides
guidelines for proper grounding and, in particular, specifies
that the ground cable ground shall be connected to the
grounding system of the building, as close to the point of
cable entry as practical.
CAUTION
RISK OF ELECTRIC
SHOCK DO NOT OPEN
ATTENTION:
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR BACK). NO
USER SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
IMPORTANT SAFETY INSTRUCTIONS
2
1. "An apparatus with Class I construction shall be connected to
a mains sockets outlet with protective earthing connection."
2. "Where the mains plug or an appliance coupler is used as the
disconnect device, the disconnection device shall remain readily
operable"
3. "1A fuse is used to US market, voltage will be set to 115V before
shipment: 500mA fuse is used to European market, voltage will
be set to 230V before shipment."
An Uncommon Value in Studio Reference Monitors
KRK’s new Rokit Powered studio monitors provide a level of precision
and performance unheard of in monitors in this class. Rokit Powered
monitors feature several of the key design elements found in KRK’s premium models, many of which have become the “studio standard” for the
world's finest engineers, producers and musicians. Now, you can have
that same KRK sound, attention to detail and commitment at a price that
makes Rokit Powered a truly uncommon value.
*
Contents
Page
Introduction - Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Design Philosophy - Design Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
System Highlights - Connecting Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
Installing and Positioning Your Monitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-17
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-18
Introduction
Congratulations on your KRK purchase! Welcome to the growing family of KRK
owners.
Growing demands on music recording industry professionals have created the need
for better monitor performance at more affordable prices. The RoKit Series class of
Powered Studio Monitors was created to address these needs. Please take a few
moments to review the information in this guide.
Safety
For your safety and to ensure correct operation of this product, please take a moment to read
the safety precautions opposite this page.
Caution
Never remove the rear panel of these powered monitors. To do so could result in electric
shock. A qualified technician should preform any repair or service to the electronics.
This product is capable of producing sounds at a volume that could be damaging to hearing
and result in permanent hearing loss over an extended period of time.
Unpacking and Visual Inspection
It is rare that a unit is damaged during shipping. However, if this does happen, contact shipping company immediately. Keep the original carton and packing material for future shipping,
and to preserve your warranty!
IMPORTANT NOTE: Your Rokit Powered monitor was originally packaged in a specially designed carton and indicated special packaging
materials. Please save these items. They should be used when transporting or shipping your Rokit Powered monitors.
Unpacking
Your Rokit Powered subwoofer has been carefully inspected and tested before
packing and shipping. After unpacking your monitor/subwoofer, carefully inspect it
for exterior damage and immediately report any physical damage during transit to
your shipping carrier. Save the shipping boxes and all packaging materials in case
the unit needs to be returned to your local dealer or KRK Systems, LLC.
Please read the warranty card that was included in the shipping carton for your
product before shipping to KRK Systems. A return authorization number from KRK
Systems is also required before shipping a product to KRK Systems for repair. After
obtaining a return authorization number from KRK Systems, all KRK Systems products in need of repair can be returned to the dealer where they were purchased or
sent directly to KRK Systems.
• For the safest possible return to KRK, please use the shipping carton and
packaging that your monitor was originally shipped in.
• KRK cannot be responsible for any damages incurred during the shipping process
due to poor packing. Make certain to insure your shipment.
• If your monitor is out of warranty and you would like a quotation before servicing
• your product, please include a note with your contact information on it and we will
contact you with a service quote. Service will be performed once your method of
payment has been established and approved.
• Replacement carton and packaging can be purchased from KRK Systems, LLC
for $18.00 each.
• For replacement part quotes call KRK Customer Service at 818-534-1580.
1 2
Design Philosophy
A studio monitor is really a tool used to aurally “measure” the changes in an audio
path. Ask any pro or semi-pro recordist what they think makes a great studio monitor and you’ll get basically the same answers: “Accuracy, transparency, “flat
response”, and “the truth”.
Everybody is saying the same thing – they want the electrical signal going in to a
monitor to be reproduced mechanically by the transducers and they want that to
happen without any degradation to the original signal. Professionals need to trust a
speaker to deliver their artistic vision in a way that will translate to a variety of audio
mediums. How you get there from a technical stand point is by designing a speaker
that eliminates or minimizes several damaging conditions. The KRK design philosophy is manifested by paying very close attention to what we call the three cornerstones:
1. Spectral Balance (Timbre)
What people tend to think sounds good is not necessarily “flat response.” A perfectly flat monitor tends to sound harsh and abrasive – technically correct but not very
musical. Research shows us that a speaker with the proper spectral balance is
most often considered “a great studio monitor”.
Spectral balance is defined by:
• Smooth on-axis response (not necessarily flat)
• Smooth octave to octave response
• Smooth off-axis response (not flat)
From years of listening to feedback from some of the top engineers and producers
we’ve come to understand how a properly tuned monitor can become a valuable
recording tool.
2. Distortion Management – Physical (Non-linear) and Electronic
Distortion: Any deviation of the original audio signal is a distortion. Various amplifier
distortions have been identified; the most commonly measured being intermodulation and harmonic distortion.
Distortion can be present in an amplifier circuit but can really be a problem when
the acoustical waveform is impacted by physical conditions such as port turbulence
and driver distortion. KRK engineers implement design concepts that eliminate or
minimize these damaging conditions.
3. Resonance Management
Resonance: The prolonging of the sound at a certain frequency and the tendency
of something to vibrate at a particular frequency after the source of energy is
removed.
Resonances also play a major role in impacting the performance of a speaker. KRK
design elements minimize cabinet vibration, speaker frames and cones resonating
or standing waves inside the cabinet that impact the performance in a negative
way.
Design Elements
Radiuses Edges - All cabinet edges and port openings are Radiuses to reduce dif-
fraction resulting in better detail and stereo imaging.
Slotted Ports – Slotted ports reduce the port turbulence and distortion commonly
found in poorly designed round ports.
Custom Made Drivers - KRK is renowned for designing high performance studio
monitor drivers. Your Rokit Powered is no exception. Our Proprietary Signature
Yellow Woofers made of a woven glass aramid composite deliver articulate
midrange and tight clear low end response.
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