Wyred 4 Sound MC 7150 User manual

Wyred 4 Sound
MC 7150
MC 7150 Owner’s Manual
**IMPORTANT**
Check position of AC mains switch prior to
connecting the unit to a power source.
©Wyred 4 Sound 2013
All rights reserved.
v1.1

Table of Contents
Register Your Product 1
READ FIRST Important 1
Package Contents 1
Introduction 2
Design and Feature Overview 2-3
AC Mains Voltage Switch 3
Getting Connected 3
Powering your Integrated Amplifier 4
“Break-In” Period 4
DC Trigger 4
Back Panel Diagram 5
Troubleshooting 5-6
Got Hum? 6
Warranty Coverage 7-8
Service 9
Specifications 10

pg. 1
Register Your Product!
It is very important to complete the warranty registration form located on our
website. You MUST complete and submit the form within 30 days of purchase to
activate your warranty. When you navigate to our website there is a tab called
“Register Products” that will allow you to fill out and submit the form.
**Keep your packaging! It is custom made for your unit and will effectively protect it for
possible future use.**
Important
Please read the entire manual before connecting this product to any existing
components for detailed information regarding the design, operation and features
of your Wyred 4 Sound MC 7150. Damage due to misuse or failure to properly follow
instructions will not be covered under warranty. See “Warranty” for an in depth
understanding of warranty restrictions regarding this product.
**Caution**
The MC 7150 has an external AC mains switch that must be properly
configured before connecting to AC power. Any damage as a result of failure to set
the switch properly is not covered under warranty. Please refer to the “AC Mains
Voltage switch” section in the manual for the fuse value and configuration
instructions.
Unpack carefully
The MC 7150 packaging contains:
•1 – Owners Manual
•1 – 6’ AC Power Cable
•1 –3.5mm mono trigger cable
•1 – MC 7150 multi-channel amplifier

pg. 2
Introduction
Wyred 4 Sound amplifiers replicate recordings with superb precision and
trueness. During the development process we carefully tune each of our products to
represent the W4S sonic signature which is no easy task! To ensure that your amp is
operating at 100% in all respects we use strict testing regiments with premium grade
Audio Precision equipment. Look no further for the culmination of performance and
efficiency. In addition to the quality of our products, you will come to love our
responsive and professional customer service.
Design and Feature Overview
The MC 7150 is a high performance multi-channel amp in a package that is
attractive, functional and powerful. With over 90% efficiency, Class D technology has
allowed us to develop and amp that will effectively enhance your music and movie
experience! In addition to having a more “Green” approach to powering your
system, this efficiency rating means very little power is wasted. Entertainment
systems are often constructed with small cabinets which are not designed for
inefficient components that require ample ventilation and this is where the MC 7150
comes in! The MC 7150 is able to operate in tight enclosures without creating
excessive heat so you can choose the entertainment center you prefer, rather than
the one you are forced to buy.
The traditional application for this amplifier is a 7 channel home theater
system but it can also be very successful running 5 channels with the mains in a bi-
amped configuration. Power is delivered to the speakers through 14AWG OFC wiring
connected to gold plated, insulated 5-way binding posts. Power consumption when
in standby is less than 0.5w so you can be sure it’s easy on the wallet! A 12V DC
trigger input jack located on the rear panel will allow you to easily put the unit in
standby when connected to the trigger output of a processor.
The lower portion of the rear panel is lined with 7 RCA jacks that feed into a
refined version of our 2nd generation MC input buffer. The neutral sonic character of
this amp allows for optimum results when using the tuning features of your
processor such as room correction or audio equalization. Another great point worth
noting is that you can operate any number of channels and those which are unused
will consume a negligible amount of power.
The new chassis is more striking than ever! When looking at the front of the
unit, only three screws are visible which are tucked neatly along the rear edge of the
top cover. We have added a machined front panel cut from a solid piece of 1”
aluminum and finished it with a smooth black powder coat. Two color options are

pg. 3
available for the top cover which include clear (Silver) or black anodize. Finally, the
steel chassis helps create a rigid foundation for mounting the components and adds
ventilation assistance for passive cooling.
AC Mains Voltage switch
Located on the left side of the rear panel is an AC mains switch. The MC 7150
will need to be unplugged and powered down for at least 2 minutes before changing
the 2 position slider switch. It is very important to ensure that the slide switch is in
the proper position before applying power. Failure to do so will likely result in
damaging the internal components and will not be covered under warranty.
The fuse is located above the IEC plug on the rear of the unit. It can be
inspected by sliding the fuse holder out (It has a symbol of a fuse on it).
90-260V: 5x20mm Slow Blow / T10A 250VAC
Getting connected
CAUTION: Disconnect the power cord or put the power switch in the “off” position
before making any connections to your amplifier to minimize the risk of electric
shock and possible loudspeaker damage. Power your MC 7150 “on” after all final
connections have been made.
Each binding post is made of “OFC” copper alloy. Both clamping nuts are built
out of one piece, and ensure an excellent grip on the spade or wire. All metallic
surfaces offer a 24-karat gold-plating, and are made from non magnetic materials.
The binding post will accept 4mm banana plugs, spades of 8mm, and crimped cable
ends up to 10 AWG. The easiest connection is made with banana plugs, but be sure
that you use the highest quality you can find. Inexpensive banana plugs can cause a
highly resistive connection which can result in a noticeably higher distortion output
and will reduce the ability of the amplifier to control the connected speakers.

pg. 4
Powering your amplifier
In order to turn the main power of the MC 7150 on, the switch located on the
rear must be in the “on” position. A green light surrounding the power button on the
front will illuminate. There is a built in 2 second delay after initially turning the
switch on in the rear of the unit before you can press the power button. Pressing the
power button will turn the unit on from standby and the light around the power
button will switch to blue. It is recommended to turn the amp off with the switch on
the back when you are connecting or disconnecting wires from the binding posts.
We also recommend doing the same when experiencing electrical storms in the
area, or perhaps leaving town for a long duration. To prevent power surges, we
suggest using high quality surge suppressor equipment. Turning the switch “off” on
the rear of the unit will protect it when you have doubts on power stability.
“Break-in” period
This amplifier performs very well right out of the box. As the amplifier “settles
in” there will be audible improvements in sound quality throughout the first 300
hours. Once you reach 100 hours of music playback you can expect the higher
frequencies to smooth and the somewhat harsh transitions to diminish. As the unit
progresses through 200 hours of playback its overall character will become
smoother and increasingly natural. The remaining 100 hours of playback will result in
further improvements although they are less significant.
DC Trigger
Near the left side of the rear panel is a 12V DC trigger in. The trigger In will
turn the unit on from standby once it is actively fed 12V DC but the main On/Off
switch on the rear must be on. Having a trigger feature is very handy because it will
allow the MC 7150 to automatically power on whenever the source is turned on or
off. For example products such as our mPRE, mINT, DAC-2, STP-SE, STI, etc. all have
12V DC trigger outputs. You will also find that the majority of pre-pros and AV
receivers have a compatible trigger feature.

pg. 5
Back Panel Diagram
1. On/Off power switch
2. Fuse holder and AC power input
3. 120V/230V Mains Voltage selector switch
4. RCA Analog input
5. Speaker output
6. 12V DC Trigger in
Troubleshooting
-No sound?
If you have your input source and speakers connected, and you can’t get music
to play, check the following. Feel free to test for output at any time during this
process if you find and correct a potential problem.
Always check the volume level before starting to play music. Damage to the
amplifier or connected components due to an unintended musical blast will not be
covered under warranty.
1. Verify that the power cord is securely plugged into the wall and the MC 7150.
2. Make sure that the Voltage Selector Switch is in the proper position. Also be sure
to check the fuse which is located in the IEC inlet fuse holder.
3. Check the power switch located on the rear to verify that it is in the on position.
Make sure that the blue light is on around the power button. If the light around the
power button is green, the power button will need to be pressed once to turn the
amp on.
4. You will need to check your source for sound output. Carefully check to see that
you have the correct input selected and the cables plugged in securely.
6. If the input is in the proper position and you are confident that your source is
sending a signal but have no sound, try inspecting or replacing the interconnects and
speaker cables.

pg. 6
7. Verify that the interconnects are working by replacing them with a different set
from a connection that you know works. If these cables were used in the current
setup and the only component that has changed is the MC 7150 continue to the next
step.
8. Now that you have interconnects that you know work, try connecting the
amplifier to another source and speakers that you know function properly.
If you are still experiencing problems and have exhausted your available resources
and time please contact the dealer/distributor that you purchased the product from
for additional support.
Got hum?
Is there too much hum coming out of your speakers? To clarify, if you put
your ear right next to the tweeter of your speaker, it is normal to hear some low
level of hiss. If the hum is easily heard at a distance, try putting your source on mute.
If this eliminates the noise, it’s inherent in the source. If muting your source doesn’t
disconnect the outputs when muted and the hum still exists while muted, try
disconnecting the inputs to the amplifier. If the hum is still there when the inputs are
disconnected, then your amplifier may need service. If the hum is not there when
the inputs are disconnected, try putting a cheater plug (ground isolator) on one
component at a time in order to locate the source of the ground loop. Once the
source is located you can contact the manufacturer for further information
regarding a solution. NOTE: We only recommend using a ground isolator for trouble
shooting purposes, and it should be removed after the problem has been found and
resolved. Having the ground of any unit disconnected can potentially create a
dangerous situation.
An easy way to locate a noisy component is to replicate the problem then
start disconnecting components one at a time, starting with the source end of your
system. Digital cable boxes and satellite receivers are notorious for making ground
loop hum. This is normally caused by the potential difference on the cable or
satellite service input wire (shield side) for either of the boxes when referenced to
ground. If this is the case in your system, the installation of an isolating transformer
would be the easiest solution and they are normally readily available at your local
electronics parts store. A better solution is a power strip with grounded and surge
protected F-connectors that you can pass your cable or satellite signal through.

pg. 7
Warranty coverage
Wyred 4 Sound’s warranty obligations are limited to the terms set forth below:
Wyred 4 Sound, as defined below, warrants this Wyred 4 Sound-branded hardware product
against defects in materials and workmanship under normal use for a period of FIVE (5)
YEARS from the date of retail purchase by the original end user purchaser ("Warranty
Period"). If the product has been transferred from the original owner to a second hand
owner it has a ONE (1) YEAR warranty, valid from the original date of purchase by the
original owner. If a hardware defect arises and a valid claim is received within the Warranty
Period, at its option, Wyred 4 Sound will either (1) repair the hardware defect at no charge,
using new or refurbished replacement parts, or (2) exchange the product with a product that
is new or which has been manufactured from new or serviceable used parts and is at least
functionally equivalent to the original product. Wyred 4 Sound may opt that the customer
replace defective parts with new or refurbished user-installable parts that Wyred 4 Sound
provides in fulfillment of its warranty obligation. A replacement product or part, including a
user-installable part that has been installed in accordance with instructions provided by
Wyred 4 Sound, assumes the remaining warranty of the original product or ninety (90) days
from the date of replacement or repair, whichever provides longer coverage for the customer.
When a product or part is exchanged, any replacement item becomes property of the
customer and the replaced item becomes Wyred 4 Sound's property. Parts provided by Wyred
4 Sound in fulfillment of its warranty obligation must be used in products for which warranty
service is claimed. When a refund is given, the product for which the refund is provided must
be returned to Wyred 4 Sound and becomes Wyred 4 Sound's property.
EXCLUSIONS AND LIMITATIONS
Wyred 4 Sound does not warrant that the operation of the product will be uninterrupted or
error-free. Wyred 4 Sound is not responsible for damage arising from failure to follow
instructions relating to the product's use. This warranty does not apply: (a) to damage caused
by use with non-Wyred 4 Sound products; (b) to damage caused by accident, abuse, misuse,
flood, fire, earthquake or other external causes; (c) to damage caused by operating the
product outside the permitted or intended uses described by Wyred 4 Sound; (d) to damage
caused by service (including upgrades and expansions) performed by anyone who is not a
representative of Wyred 4 Sound or a Wyred 4 Sound Authorized Service Provider; (e) to a
product or part that has been modified to significantly alter functionality or capability without
the written permission of Wyred 4 Sound; (f) if any Wyred 4 Sound serial number has been
removed or defaced.
TO THE EXTENT PERMITTED BY LAW, THIS WARRANTY AND REMEDIES SET FORTH ABOVE ARE
EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, REMEDIES AND CONDITIONS, WHETHER
ORAL OR WRITTEN, STATUTORY, EXPRESS OR IMPLIED. AS PERMITTED BY APPLICABLE LAW,
WYRED 4 SOUND SPECIFICALLY DISCLAIMS ANY AND ALL STATUTORY OR IMPLIED
WARRANTIES, INCLUDING, AND WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND WARRANTIES AGAINST HIDDEN OR LATENT
DEFECTS. IF WYRED 4 SOUND CANNOT LAWFULLY DISCLAIM STATUTORY OR IMPLIED

pg. 8
WARRANTIES THEN TO THE EXTENT PERMITTED BY LAW, ALL SUCH WARRANTIES SHALL BE
LIMITED IN DURATION TO THE DURATION OF THIS EXPRESS WARRANTY AND TO REPAIR OR
REPLACEMENT SERVICE AS DETERMINED BY WYRED 4 SOUND IN ITS SOLE DISCRETION EXCEPT
AS PROVIDED IN THIS WARRANTY AND TO THE EXTENT PERMITTED BY LAW, WYRED 4 SOUND
IS NOT RESPONSIBLE FOR DIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
RESULTING FROM ANY BREACH OF WARRANTY OR CONDITION, OR UNDER ANY OTHER LEGAL
THEORY, INCLUDING BUT NOT LIMITED TO LOSS OF USE; LOSS OF REVENUE; LOSS OF ACTUAL
OR ANTICIPATED PROFITS (INCLUDING LOSS OF PROFITS ON CONTRACTS); LOSS OF THE USE
OF MONEY; LOSS OF ANTICIPATED SAVINGS; LOSS OF BUSINESS; LOSS OF OPPORTUNITY; LOSS
OF GOODWILL; LOSS OF REPUTATION; LOSS OF, DAMAGE TO OR CORRUPTION OF DATA; OR
ANY INDIRECT OR CONSEQUENTIAL LOSS OR DAMAGE HOWSOEVER CAUSED INCLUDING THE
REPLACEMENT OF EQUIPMENT AND PROPERTY, ANY COSTS OF RECOVERING,
PROGRAMMING, OR REPRODUCING ANY PROGRAM OR DATA STORED OR USED WITH WYRED
4 SOUND PRODUCTS AND ANY FAILURE TO MAINTAIN THE CONFIDENTIALITY OF DATA
STORED ON THE PRODUCT. THE FOREGOING LIMITATION SHALL NOT APPLY TO DEATH OR
PERSONAL INJURY CLAIMS. WYRED 4 SOUND DISCLAIMS ANY REPRESENTATION THAT IT WILL
BE ABLE TO REPAIR ANY PRODUCT UNDER THIS WARRANTY.
Obtaining warranty service
Please access and review the resources referred to in the documentation accompanying
this hardware product before requesting warranty service. If the product is still not
functioning properly after making use of these resources, please contact the Wyred 4 Sound
representatives or, if applicable, an Authorized Service Provider (dealer) using the information
provided on the Wyred 4 Sound website. A Wyred 4 Sound representative or an Authorized
Service Provider will help determine whether your product requires service and if it does, they
will inform you how Wyred 4 Sound will provide it. Wyred 4 Sound or its Authorized Service
Providers will provide warranty service on products that are tendered or presented for service
during the Warranty Period, as permitted by law. Wyred 4 Sound is not responsible for
freight charges to our facility for warranty repairs. We will cover return freight charges
(domestic only) if the unit is found to be faulty and still within the warranty coverage
period. Additionally we must have a valid warranty registration form on file that was
submitted within 30 days of purchase to activate the product warranty. You will be
responsible for delivery and return shipping and handling charges if the product cannot be
serviced in the country it is in. In accordance with applicable law, Wyred 4 Sound may require
that you furnish proof of purchase details and/or comply with registration requirements
before receiving warranty service. Please refer to the Service page on the Wyred 4 Sound
website. For more details on this and other matters on obtaining warranty service contact
your dealer. Recovery and reinstallation of system and application software and user data are
not covered under this Limited Warranty.

pg. 9
Service
In the unlikely event there is a problem with your Wyred 4 Sound component, please
contact your dealer, distributor, or Wyred 4 Sound to discuss the problem before you return
the component for repair. Products shipped to the factory will be refused and returned freight
collect if not accompanied by a Wyred 4 Sound issued return authorization number (RA
Number). Return authorization numbers must be prominently displayed on the outside of the
box and an accompanying letter describing the problem and re-listing the RA number must be
inside the box to qualify for service.
To contact the Wyred 4 Sound Service Department:
Telephone: [phone]
(See “Contact Us” on our website for current hours of operation)
Fax: [phone]
Email: [e-mail]
Website: http://www.wyred4sound.com
If you are located in the United States and purchased directly from W4S use the following
procedure:
1. Fill out the Service form on our website located under the “Service” tab.
2. If service is approved we will issue a Return Authorization Number (R/A number) from the
Wyred 4 Sound Service Department. Be sure to confirm the current shipping address.
3. Insure and accept all liability for loss or damage to the product during shipment to the W4S
facility and ensure all freight (shipping) charges are prepaid.
The product may also be hand delivered to the California facility if arrangements with the
Service Department have been made in advance. Proof of purchase from an authorized
Wyred 4 Sound dealer, distributor or agent will be required for warranty validation at the time
of hand delivery. Use the original packaging to ensure the safe transit of the product to the
factory, dealer, or distributor. Wyred 4 Sound may, at its discretion, return a product in new
packaging and bill the owner for such packaging if the product received by Wyred 4 Sound
was boxed in nonstandard packaging or if the original packaging was damaged to the point
it was unusable. If Wyred 4 Sound determines that new packaging is required, the owner will
be notified before the product is returned. To purchase additional packaging, please contact
your authorized Wyred 4 Sound dealer, distributor, or the Wyred 4 Sound Service Department
for assistance.
If you did not purchase the product directly from us and require service please contact your
dealer or distributors’ service department for information regarding service.
If you feel your authorized dealer or distributor is either unwilling or unable to service your
Wyred 4 Sound products, please contact our service department by emailing
[e-mail] or the phone number listed below to discuss and resolve the
situation.

pg. 10
Specifications
Typical THD+N 8Ω (10W out) 0.003%
Power Output 8Ω @ 0.2% THD+N (2 channels driven) 165W
Power Output 8Ω @ 1.0% THD+N (2 channels driven) 180W
Power Output 4Ω @ 0.2% THD+N (1 channel driven) 335W
Power Output 4Ω @ 1.0% THD+N (1 channel driven) 364W
Output Idle Noise A wt. < 150µV
Frequency Response 20Hz--20kHz (8 ohms) ± 0.027db
Unbalanced Input Impedance 61.9k
Dynamic Range 106db
Gain 30db
Sensitivity 1.15V
Min Load 4Ω
Idle power consumption <10W
Standby power consumption <0.5W
Wyred 4 Sound
PH: 805-466-9973
Fx: 805-462-8962
Email: [e-mail]