DRAWMER
CMC7
SURROUND MONITOR CONTROLLER
CONTENTS
Warranty
Safety Consideration
Radio Frequencies Statement
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Chapter 1 - Introduction
Introduction
Installation
Power Connection
Security
Audio Connection
Typical Connection Guide
Chapter 2 - Control DescriptionContro
De sc ri pt ion
Mix Checking Tips
Chapter 3 - General Information
If a fault develops
Contacting Drawmer
Specification
Block Diagram
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DRAWMER
This ma nual is copyrighted © 2018 by Drawmer El ectronics L td. W ith all rights reserved. Under copyright
laws, no part of this publication may be repr oduced, transmitted, stored i n a retrieval system or translated
into any language in any form by any means, mechani cal, optical, electronic, recording, or otherwis e,
without the written permissio n of Drawm er Electroni cs Ltd.
ONE YEAR LIMITED WARRANTY
Drawmer Electronics Ltd., warrants the Drawmer CMC7 Surround
Monitor Controller to conform substantially to the specifications of
this manual for a period of one year from the original date of purchase
when used in accordance with the specifications detailed in this
manual. In the case of a valid warranty claim, your sole and exclusive
remedy and Drawmer’s entire liability under any theory of liability will
be to, at Drawm er’s discretion, repair or replace the product without
charge, or, if not possible, to refund the purchase price to you. This
warranty is not transferable. It applies only to the original purchaser
of the product.
For w arranty service please call your local Drawmer deal er.
Alternatively call Drawmer Electronics Ltd. at +44 (0)1709 527574.
Then ship the defective product, with transportation and insurance
charges pre-paid, to Drawmer Electronics Ltd., Coleman Street,
Parkgate, Rotherham, S62 6EL UK. Write the RA number in large
letters i n a prominent position on the shipping box. Enclose your
name, address, telephone number, copy of the original sales invoice
and a detailed description of the problem. Drawmer will not accept
responsibility for l oss or damage during transit.
This warranty is void if the product has been damaged by misuse,
modification, unauthorised repair or installed with other equipment
that proved to be faulty.
THIS WARRANTY IS IN LIEU OF ALL W ARRANTIES, W HETHER
ORAL OR WRITTEN, EXPRESSED, IMPLIED OR STATUTORY.
DRA W MER MAK ES NO OTHER W ARRANTY EITHER
EXPRESS OR IMPLIED, INCLUDING, W ITHOUT LIMITATION,
ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULA R PURPOSE, OR NON-INFRINGEMENT.
PURCHASER’S SOLE AND EXCLUSIVE REMEDY UNDER THIS
WARR ANTY SHALL BE REPAIR OR REPLACE MENT AS
SPECIFIED HEREIN.
IN NO EVENT WILL DRAWMER ELECTRONICS LTD. BE LIABLE
FOR AN Y DIRECT, INDIRECT, SPECIAL, INC IDENTAL OR
CONS EQUENTIA L DAMA GES RESU LTING FROM ANY
DEFECT IN THE PRODUCT, INCLUDING LOST PROFITS,
DAMAGE TO PROPERTY, AND, TO THE EXTENT PERMITTED
BY LAW, DA MAGE FOR PER SONAL INJ URY, EVEN IF
DRAWME R HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
Some states and specific countries do not allow the exclusion of
implied warranties or limitations on how long an implied warranty may
last, so the above limitations may not apply to you. This warranty gives
you specific legal rights. You may have additional rights that vary from
state to state, and country to country.
COPYRIGHT
For the USA
FEDERAL COMMUNICATIONS COMMISSION RADIO
FREQUENCY INTERFERENCE STATEMENT
Thi s equipment has been tested and found to com ply with the lim its
for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no
guarantee that interference w ill not occur in a parti cular install ation.
If this equipment does cause interference to radio or television
reception, which can be determined by turning the equipment off an
on, then the user is encouraged to try to correct the interference by
one or more of the following measures:
Re-orient or relocate the recei ving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Unauthorised changes or modifi cation to thi s system can void the
users’ authority to operate this equipment.
This equipment requires shielded interface cables in order to meet
FCC class B limit.
For Canada
CLASS B NOTICE
This digital apparatus does not exceed the Class B limi ts for radio
noise emissions set out in the Radio Interference Regulations of the
Canadian Department of Communications.
CLASSE B AVIS
Cet appareil numérique ne dépasse pas les limites de la classe B au
niveau des émis sions de bruits radioélectriques fixés dans le
Règlement des signaux parasites par le ministère Canadien des
Communications.
SAFETY CONSIDERATIONS
DO NOT OPEN. REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL.
TO REDUCE RISK OF FIRE/ELECTRIC SHOCK DO NOT EXPOSE T HIS EQUIPMENT TO MOISTURE.
DO NOT ATT EMPT TO CH ANGE OR TAMPER W ITH THE SUPPLIED MAINS CABLES.
THERE ARE NO USER REPLACEABLE FUSES W ITHIN EITHER THE CMC7 OR IT’S SUPPLIED
POW ER SUPPLY. IF FOR ANY REASON THE CMC7 CEASES TO W ORK DO NOT ATTEMPT TO
MEND IT - CO NTACT DRAWMER TO ARRANGE FOR A REPAIR/REPLACEMENT.
In the interests of product development, Drawmer reserve the right to modify
or improve specifications of this product at any time, without prior notice.
2
CAUTION - SERVICING
WARNING
WARNING
WARNING
CHAPTER 1
CMC7
Surround Monitor Controller
The CMC7 has been designed to simplify the control over you surround speaker
setup whilst being pocket friendly, making surround recording feasible to the serious
home producer and small studio. The CMC7 is a compact 8 channel / 7.1 / 5.1
surround volume controller and cost-effective alternative to the more complex and
feature rich MC7.1. In order to maintain it's compact proportions and to keep the
product budget friendly the CMC7 does away with controls that can often be found
within your workstation software and concentrates on essential features such as
ease of use and the quality of the signal path, ensuring that the audio is transparent
and accurate across all channels and operation intuitive.
Whether it is producing audio for film or television, or transporting the listener
directly into the venue of an all-encompassing orchestral piece, one thing is sure,
the number of users that wish to listen to audio within a surround setting has been
growing and will continue to do so. There has been an ever-increasing number of
surround products coming to market, not only blue ray players and home cinema
but also on mobile and media devices. For example, Apple devices have been
capable of reproducing 7.1 surround since iOS 9.3. Therefore, it is likely that at
some point every artist and engineer will consider trying surround sound, or fear
being left behind. The budget friendly CMC7 allows you to do this without the large
financial outlay that other setups will produce.
CMC7 - Surround Monitor Controller
3
DRAWMER
Accurate & Transparent
Coming from the same stable as the MC2.1, MC3.1 and MC7.1 you can be sure of
the same high quality for the Drawmer CMC7 Surround Monitor Controller. The
circuit is just as transparent and accurate. It's controls have the same quality feel
and operation and the huge volume knob provides excellent channel matching,
and smooth feel. You hear exactly what you've recorded!
Surround Sound
The 8 inputs and outputs are provided via two balanced 25 pin d-sub connectors
wired to the Tascam standard making connecting easy. It allows for 8 independent
channels, 5.1, 7.1, quadraphonic, DTS®, Dolby Digital EX,THX Surround EX™,
DTS-HD™, Dolby Atmos®, etc, the setup is up to the user.
With the Stereo Mix switch active the surround mix can be bounced down to a 2.1
signal in the front left and right monitors and sub-woofer, to test the quality of the
recording when in stereo. In addition, it has a professional quality stereo headphone
output with a separate amplifier and level control, that provides private mix checking,
a DIM switch reduces output by 20dB and a MUTE switch is also available to cut the
output completely.
Precision
The circuit design of the CMC7 ensures that the channel matching of all 8 channels
is consistent throughout the full range of the volume control. Other manufacturers of
surround controllers use multi-ganged potentiometers to achieve the levels of the
8 channels, this is especially true of passive surround controllers, this simplifies
the circuit but leads to discrepancies in the level of each channel, especially at the
lower and upper volumes, where accurate channel matching can vary wildly.
Compact
The CMC7 packs a lot of features into a small package. With a footprint of just
18x16cm and a very low profile the CMC7 won't hog your desk space like some
other controllers do. And if your on the move it's small enough to pop into a bag to
take anywhere.
Tough & Secure
Whilst being smart and stylish the rugged, all steel enclosure will withstand the
knocks and bumps of the studio, and, coupled with the high quality components
used, the CMC7 is built to last. In addition, a Kensington security slot provides
protection from thieves.
4
Can you trust the audio that your current monitor controller is providing? Is it colouring
the sou nd? F or all Drawmer monitor controllers it is imperative that w hat you
record is exactly what you hear. There is one thing that should always be absolutely
guaranteed - that you can rely on the accuracy of your monitor controller.
Main Features:
Ultra low noise and transparent circuit design.
•
All 8 inputs and outputs are via 2 Tascam standard 25 Pin D-Sub connectors
•
making connection to interfaces and speakers simple and intuitive.
Mix down switch enables you to check the Surround as a Stereo mix with
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an independent Sub switch controlling the LFE/Sub.
Timed relay protection on all speaker outputs to prevent power up/down
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bangs.
A large volume knob incorporating excellent channel matching and smooth
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feel.
An independent Headphone Amplifier with Individual Level Control with
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jack on the rear.
Kensington security slot (also called a K-Slot or Kensington lock).
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Very low profile desktop enclosure with a footprint of just 18x16cm.
•
Stylish and Rugged Enclosure will withstand the knocks of the studio.
•
CMC7 - Surround Monitor Controller
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DRAWMER
INSTALLATION
The CMC7 is a free standing, desktop unit. We have endeavoured to make the
CMC7 as small as possible without compromising on controls, connections and
above all sound quality. The unit has a footprint of just 18 .7cm x 16.4cm with
controls on the top, with headphone, input and output connections on the rear.
POWER CONNECTION
The CMC7 unit will be supplied with an external switching mode power supply that
is capable of 100-240Vac continuous (90-264Vac max) and so should work globally.
We strongly advise that the power supply that has been supplied with the CMC7 is
used, rather than one with the equivalent ratings. In addition, should the power
supply fail for any reason we strong ly advise that you c ontact Drawmer for a
replacement rather than repairing the unit yourselves. Failure to do either of these
could permanently damage the CMC7 and will also invalidate the warranty.
The power supply can be fitted with 4 interchangeable AC pins for the UK, European,
USA and Australian, though will be supplied with a type that is suitable for domestic
power supply outlets in your country, the others are available upon request. For your
own safety, it is important that you use the correct adapter. The power supply must
not be tampered with or modified.
Before connecting the CMC7 to the power supply ensure that all knobs are
turned off (i.e. fully anticlockwise). A switch next to the d.c. power inlet on the rear
of the unit switches the power on/off.
POWER SWITCH
POWER SUPPLY INLET
SECURITY
To help protect the CMC7 from theft the side has a Kensington Security Slot (also
called a K-Slot) which enables the fitting of hardware locking accessories that can
attach your CMC7 to an immovable object, making the CMC7 more of a challenge for
the potential thieves to steal.
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AUDIO CONNECTIONS
• Interference: If the unit is to be used where it maybe exposed to high levels of
disturbance such as found close to a TV or radio transmitter, we advise that the unit
is operated in a balanced configuration. The screens of the signal cables should
be connected to the chassis connection on the XLR connector as opposed to
connecting to pin1. The CMC7 conforms to the EMC standards.
• Ground Loops: If ground loop problems are encountered, never disconnect the
mains earth, but instead, try disconnecting the signal screen on one end of each of
the cables connecting the outputs of the CMC7 to the patchbay. If such measures
are necessary, balanced operation is recommended.
TYPICAL CONNECTION GUIDE
CMC7 - Surround Monitor Controller
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DRAWMER
CHAPTER 2
CONTROL DESCRIPTION
Th e CMC7 allow s the volume adjustment of 8 chann els, eith er su rround or
otherwise, and with relatively few controls, enables you to perform the majority of
mix checking tasks in you DAW or mixer, whilst remaining as transparent and
precise as any other Drawmer monitor controllers.
1
MASTER VOLUME
The Monitor Volume control adjusts the signal level of all 8 channels for all speaker
outputs (6). The Volume knob affects the volume of the monitors when in surround
mode and also when the Stereo Mix (3) has been activated, and also has a bearing
on the headp hones (1). The volume knob is large and accurate and provides
excellent channel matching and a smooth feel, with a range from Off (-infinity) to
+6dB of gain.
Because the circuitry is active it allows for the signal level to be increased, unlike
attenuating only devices, making subtle problems within a mix (such as noise at
low levels, or unwanted harmonics, for example) more obvious and easier to iron
out, especially during musical passages that would normally be quiet.
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WARNING:
It is recommended that you turn the volume control down to a lower level before
turning the CMC7 off - this is to ensure that a sudden volume increase when
turning on does not damage your speakers or your hearing.
In addition, do not use excessive force at either end of the volume knob - it’s
size would mean that damaging the potentiometer is possible.
2
OUTPUT
Mute: Cuts the volume of all channels (especially useful in an emergency). Note
that Mute affects the headphones in the same way as it does the speakers.
Dim: With the switch active the output level is attenuated by 20dB’s. It enables you
to lower the volume without adjusting any of the settings.
3
STEREO MIX
Active: When active mixes down all eight channels to their relevant position within
the stereo mix and outputs the signal via the Left and Right speakers and also the
Sub signal to the LFE of the surround setup.
SUB: Toggles the Sub (LFE) on and off to hear the stereo mix through the L and R
speakers only. Note that this switch only functions when the stereo mix is active.
4
HEADPHONE LEVEL
The CMC7 has a dedicated headphone output, via 1/4” TRS jack on the rear face
(7), with individual headphone amplifier and level trim (4) on the top face. The
headphone operates in stereo, with all eight channels mixed down to their relevant
position within the stereo mix.
Note that the headphone level control is a trim that works simultaneously with the
Master Volume (1) to adjust the volume of the headphones so that this output can
suit all t ypes of headphon es, from prof essional studio g rade to consumer. It
responds to Dim and Mute (2) in just the same way as the speaker outputs do.
The headphone output trim has no bearing on the volume of the main speaker
outputs (6), however, as the headphone amplifier is of such a high quality the
headphone output could be used as a source for a second set of stereo monitors,
should they be required, the trim control being used for speaker level matching.
Warning:
It is advisable to unplug the headphones before switching the CMC7 on or off.
It is also recommended that you turn the headphone level down before inserting
the jack, and turn it up to your desired listening level - these measures will not
only prevent your ears from being damaged but also the headphone’s drivers.
Also, no te that these are h igh q uality circuits and have been designed for
professional headphones, so care must be taken to lower the volume using
the headphone level control when using lower standard, consu mer quality
headphones as damage could occur.
CMC7 - Surround Monitor Controller
9
DRAWMER
5
SURROUND INPUTS
The eight balanced inputs to the CMC7 are via a 25 pin D-Sub connector wired to
the Tascam standard (Refer to ‘Audio Connections’ for wiring information). The
CMC7 does not have input level trims, and their is only one volume control that
effects all eight channels in exactly the same way regardless of the source origin,
be it surround 7.1, 5.1 or 8 independent sources, meaning any individual channel
volume level to balance the mix should be performed prior to reaching the CMC7.
6
7.1 SPEAKER OUTPUTS
The CMC7 has eight balanced outputs. Connection is via a 25 pin D-Sub connector
wired to the Tascam standard (Refer to ‘Audio Connections’ for wiring information)
and a 25 pin d-sub to 8x XLR snake should be used to connect each individual
speaker. It has no speaker output trims so monitor calibration should take place
after the CMC7 via active speaker adjustments.
7
PHONES
The headphone output is a 1/4” TRS jack that is capable of driving a wide number
of headphones from budget to professional - The Headphone Volume Level knob
for the headphone amplifier is found on the top panel above the main volume
control (4), and is used to trim the volume of the headphones.
Because the headphone amplifier is of such a high quality the headphone output
could also be used as a source for a second set of stereo monitors, should they be
required, the trim control being used for speaker level matching.
8
POWER
The CMC7 will be supplied with an external switching mode power supply that is
capable of 100-240Vac continuous (90-264Vac max) and should work globally, but
is supplied with a cable suitable for domestic power outlets in your country. We
strongly advise that the power supply that has been supplied with the CMC7 is
used, rather than one with the equivalent ratings. The push button switch activates
the CMC7. Note that a timed relay protection circuit has been incorporated into
circuit to prevent bangs and other potentially harmful artifacts from occurring during
power up and power down.
10
Mix Checking Tips
Due to the versatility of the CMC7 some very useful techniques for checking your
mix can easily be achieved, that can help improve the balance within a mix, pinpoint
stereo width, phase and mono problems, and also aid when monogising.
The following are a few handy tips to help eradicate problems and bring about a
balance within the mix:
Not too loud...
Give your ears a break. Do not have the volume too loud - frequent monitoring at
anything above 90dB will only make your ears tired, meaning that you won’t really
hear the problems that may be occurring, and give you a false sense that the mix
sounds nice and loud. Also, constant listening at anything above 100dB will probably
have a long term detrimental effect on your hearing.
Shhhh...
Get into a habit of listening to your mix at very low levels quite often. Remember that
not everyone listening to your song has music blasting out. As well as giving your
ears a break, it will heighten problems in the mix - Do the key elements have a
good balance, or are some instruments more prominent than they should be? If
something is too quiet or loud adj ust its volume or use E.Q. to fix it. If the mix
sounds good at low levels it’s likely that it will when loud.
Note that on the CMC7 it is better to lower the volume level using the DIM switch
and then turn the volume up, rather than only turning the volume down, as you
maintain greater con trol over the volume as well as better left/right chan nel
matching .
Increase the Volume of Quiet Passages.
Because the CMC7 circuitry is active it allows for the signal level to be increased,
rather than only attenuated, making subtle problems within the mix, such as noise
at low levels, or unwanted harmonics, more obvious and easier to iron out, especially
during passages that would normally be quiet.
Here, There and Everywhere......
Listen to your mix on as many systems as possible. Try it on the high end studio
system that you use for recording but also on a consumer quality systems too. In
such conditions you may find that an instrument drops out of the mix, or another is
too prominent, and adjustment to the mix need to be made.
Not so Sweet
Your mix may sound perfect when sat in the centre of the mix, but bare in mind that
many people in the theatre or in front of their home entertainment system will not
be sat in the ‘sweet spot’. Move around the room - does the audio still have the
same impact, do you notice audio dropping out, or that’s too prominent. Make
adjustments to the mix as you see fit.
Take two
Test your mix in stereo every once in a while. It’s easy with the CMC7, just activate
the ‘Stereo Mix Active’ switch. Remember the majority of users still listen in stereo
so it’s important that your mix sounds good in these situations. Adjust the mix as
you see fit.
CMC7 - Surround Monitor Controller
11
DRAWMER
CMC7 GENERAL INFORMATION
IF A FAULT DEVELOPS
For warr ant y servic e please c all Drawmer
Electronic s Ltd. or t heir nearest authorised
service facility, giving full details of the difficulty.
A list of all main dealers can be found on the
Drawmer web pages . O n rece ipt of thi s
information, s ervice or shipping instructions
will be f orwarded to you.
No equipment should be returned under the
warranty without prior consent from Drawmer
or their authorised repres entative.
For s er vi c e claim s und er th e war r an ty
agreement a ser vice R etu rns Aut hor is ation
(RA) number will be issued.
W ri te this RA nu mber in large l etters in a
pr ominent pos it i on on th e s hippin g box .
Enc lose your na me, a dd r es s , t el ep hone
number, copy of the original sales invoice and
a detailed description of the problem.
CHAPTER 3
SPECIFICATION
CROSSTALK >80dB
THD & NOISE 0.01% @ 0dBu
FREQUENCY RESPONSE
20Hz-20kHz +/- 0.2dB
PHASE RESPONSE
20Hz-20kHz +/- 2degrees max
POWER REQUIREMENTS
External Power Supply
Input: 100-240V ~ 50-60Hz, 0.48A MAX.
Output: 15V 1A
Voltage automatically selected by PSU
Authorised returns should be prepaid and must
be insured.
All D r aw mer pr oducts are packaged i n
specially designed containers f or protection.
If the unit is to be returned, the origi nal
container must be used. If this container is not
avail able, then the equ i pm en t shou ld be
packaged in substantial shock-proof material,
capable of withstanding the handling for the
transit.
CONTACTING DRAWMER
We will be pleased to answer all application
questions to enhance your usage of Drawmer
equipment.
Please address correspondence to:
DRAWMER Electronics LTD
Coleman Street
Parkgate
Rotherham
South Yorkshire
S62 6EL
United Kingdom
Telephone: +44 (0) 1709 527574
Fax: +44 (0) 1709 526871
Contact via E-mail: tech@drawmer.com
Further information on all Drawmer products,
dealers, Authorised s ervice departments
and other contact information can be found
on our websi te: www. dr awme r.com
12
EMC Standards EN55022:2006+A1:2007 /
EN6100-3-2 / EN6100-3-3
Us e onl y th e extern al PSU s u pplied by
Drawmer or an accredited partner. Failure to
do so could permanently damage the CMC7
and will also invalidate the warranty.
CASE SIZE
Depth 168mm
Width 187mm
Height 45mm
WEIGHT 1.1kg
Ref:1v01D 08-02-19
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