Hogtunes NCA70.2 Installation Manual

NCA70.2

REV SERIES 140 WATT 2-CHANNEL AMPLIFIER

INSTALLATION MANUAL

NCA70.2

REV SERIES 140 WATT 2-CHANNEL AMPLIFIER

INSTALLATION MANUAL

INTRODUCTION

Thank you for choosing the Hogtunes NCA-70.2 Amplifier. Since positive word of
mouth is the best way to grow our business, we want your new system to work as
well as it was designed to. If you have any questions or concerns, we are here to
help.

All the required harnesses are included for powering front speakers, lowers speak

­ers, or rear speakers. Please note that you WILL have left over harnesses when
done! Do not cut any wires—follow the instructions. Wires left in the bike that are
not currently used will be required if you want to expand your system later on.

The NCA 70.2 is rated for 70 watts per channel using 2 ohm speakers, at

14.4volts at 1% Total Harmonic Distortion (THD). Although this amplifier makes its
highest power with 2 ohm speakers, if Hogtunes 5.75 ohm speakers, or 4 ohm
car speakers are used, there will still be a noticeable improvement in volume and
sound quality.

If you are not using Hogtunes speakers, chances are the speaker connectors are
not the same as stock. If you need to change connectors, please note that on all
Hogtunes products, the smaller connector (black wire) is positive (+).

If you are replacing a Hogtunes USA 24.2 you can use the existing 24.2 power
harness as long as you change the fuse at the battery to a 15 amp. Locate and cut
the “zip tie” that holds the 24.2 power and main audio in/out plug together.
Remove the 24.2 audio in/out harness and continue with the NCA 70.2
installation

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TABLE OF CONTENTS

Introduction .................................................................................. Page 2

Adjusting Your System ................................................................... Page 3

Mounting Considerations/Required Adaptor Kits .............................. Page 4

Which Speakers You Want to Power with NCA 70.2

• Fronts ............................................................................... Page 6

• Lowers ............................................................................ Page 11

• Rears .............................................................................. Page 16

Adjusting Your System--Please Read!

In order to make your new system perform as good as it was designed,
please take a minute to understand and follow these tips:

1) Set your “Automatic Volume Control” (AVC) to 3 bars. After extensive on
road testing, we found that this AVC position works and sounds best. Your
new amplifier has been specifically set-up for this radio setting.

2) Your Hogtunes system is designed specifically for a motorcycle at speed.
Exhaust noise and wind noise have been taken into careful consideration
in how your system performs. How your new system sounds in a driveway
or garage is radically different from how it will sound at highway speeds.
Although your system was set-up with a factory radio with its bass and
treble controls in the middle position, if you feel the need to make adjust­ments, please do so (carefully) at your normal cruising speed.

3) If you have an aftermarket car radio on your bike, everything will work
fine, but please remember that car radios are designed to work in an
environment with little or no exhaust or wind noise. Many car radios have
“features” such as equalizers, loudness contours, surround effects, etc., all
designed for a quiet environment, and all of which will hurt your ability to
hear your motorcycle system at speed if left on. Please take a minute and
turn as much of these “features” off. With a car radio in your bike, the
only adjustments you should be able to access for best performance are
volume, bass, treble, balance, and fader.

4) If your using an external device to supply music through the radios aux
port, we have an article on our website that can help make your periph

­eral audio device sound as good as it can. The article is at http://www.
hogtunes.com/techzone_files/Level_matching.pdf

Hogtunes Contact Information

Email: [e-mail]

Tel: [phone]

A video version of this manual is available at

www.hogtunes.com.

If you still need

assistance, please consider a professional

installation by your motorcycle dealer.

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For bikes with
dual NCA 70.2’s,
2nd amp will
be mounted on
Hogtunes RG40.4
Adaptor kit

(Drag #4405-0232)

as shown in
Figure 2.3

Figure 2.2

Figure 2.3

MOUNTING CONSIDERATIONS/
REQUIRED ADAPTOR KITS

Depending on your model of bike, or what you have for an existing system, you
may need a Hogtunes Amplifier Adaptor Kit.

If you have a Standard, EG Classic, Street Glide, or Ultra, and this is the only
Hogtunes amp in the system, the amp will adhere to the top of the radio using the
supplied “hook and loop adhesive. No adaptor needed.

If you have a Standard, EG Classic, Street Glide, or Ultra, and this will be the 2nd
amp in the system, Hogtunes “2CHSP” (Drag Specialties Part # 4405-0234) is
required. This kit bolts into your fairing, and locates the NCA 70.2 between the
radio and brake side speaker. Please do not continue the install until you have the
required parts. 2CHSP can also be used if you prefer not having an amplifier sit
on top of the radio.

If you have a Road Glide or Road Glide Ultra, Hogtunes has 2 different RG
Adaptor kits, and you will need one of them. If you don’t not have the adaptor
you need, please do not continue the install until you have the required parts.

1) If this is the only amp in the system, or, if you already have a Hogtunes NCA

40.4 and are adding to the system, you will need Hogtunes RG Adaptor Kit
(Drag Specialties Part # 4405-0096) which bolts the amp to the main studs that
attach the inner fairing to the frame of your bike.

2) If you already have a NCA 70.2 in the bike, it should be mounted to a plate
attached to the main studs that hold the inner fairing to the frame of your bike.
The second amp will bolt in using Hogtunes RG 40.4 Adaptor kit
(Drag Specialties Part # 4405-0232) This will locate the second amp off to
the extreme brake side of the inner fairing.

If required, please have the amplifier mounted to the appropriate adaptor (but not
to the bike yet) before continuing with the install. If you do not have the required
adaptor, please consult your retail dealer.

In most cases,
NCA 70.2 will
be mounted on
Hogtunes RG
Adaptor kit

(Drag #4405-0096)

as shown in
Figure 2.2

BEFORE PROCEEDING, PLEASE MAKE SURE

YOU HAVE READ THE INTRODUCTION, SYSTEM

ADJUSTMENT, AND MOUNTING SECTIONS

FRONT SPEAKERS
(AND TWEETER POD IF PRESENT)

Step #1: Remove the seat, and both wires (+ and -) from the battery.

Step #2: Remove the outer fairing/headlamp assembly. Refer to a service manual

if you need help with this. Note: A towel on the front fender can help
prevent scratches or “dings” from dropped tools or fasteners etc.
Expletives will also be kept to a minimum!

Step #3: Locate the bag with 3 separate harnesses. It has the amps power har-

ness (red, black, and orange wires with a 3 pin green plug), input
harness (ending in an 8 pin white plug), and a front out harness (4 pin
black plug with blue/black, and brown/black wires). Plug the power
harness into the amp, and make sure to secure the screws to prevent the
harness from backing out while riding. Plug the input harness into the
amp where it says “Audio Input/Exp. Port”. Plug the 4 pin output har­ness into “Amplified Output” on the amp.

Step #4a:

Mounting the amp For Standards, Street Glide, EG Classic, and Ultra
Classic-- If this is the only amp in the system, the amplifier gets mounted to
the top of the factory radio using the supplied “hook and loop” adhesive,
and must sit so you can read the text on top of the amplifier as in
diagram 1.1. The amplifier needs to
mount as far back on the radio as pos­sible so the fairing can go back on. The
minimum distance from the back of the
radio to the most forward edge of the
amplifier is 5/8” (15mm). On pre-2006
model bikes, it is a tight fit--but will go.
2006+ (Advanced Audio) radios have a
“bump” on top of the radio that runs from
front to back down the center of the radio.
Cut the adhesive in half and apply each
piece on either side of this bump. The
amp will then mount flush. Most adhesives
work best at room temperature or higher.
Note: 2006 and newer Ultras have the
CB module on top of the radio. The amp
will adhere on top of the CB module so it
is “half on/half off this module as shown
in Diagram 1.2. The supplied adhesive is
plenty strong for this! The amp can adhere
on top of CB and XM modules without issue.

Diagram 1.1

No CB/XM Module Present

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Diagram 1.2

Shown mounted on top

of CB Module

If this is the 2nd amp in the system, mount the amp to the
Hogtunes 2CHSP plate and install in your bike.

Step #4b: Mounting the amp For Road Glide or Road Glide Ultra – The amp will

mount to the plate and the plate will mount to the bike as per the plates
instructions. NOTE: Use the harnesses that come in this kit and NOT the
harnesses that come as part of your RG adaptor kit.

WIRING THE AMPLIFIER

Step #1a: If this is the only amp in the bike. On the audio input harness, locate

the yellow/black pair of wires with the male connectors. Un plug the
factory speaker wires on the clutch side of the bike and plug the yel­low/black wires in to those. They will only go in one way. Also on the
audio input harness, locate the green/black pair of wires with the male
connectors. Un plug the factory speaker wires on the brake side of the
bike and plug the green/black wires in to those. Note: The blue 4 pin
plug with black wires on the input harness is an “expansion port” which
used to send music to a second amp, or is used to send radio power to
run other speakers on the bike. You can see how the expansion port can
be used further on in this manual.

Step #1b: If this is the 2nd amp in the bike and the “1st” amp is a Hogtunes NCA

40.4. Locate the Blue plug with red/black, and white/black wires on it,
and plug this into the “bypass out” (also a blue plug) on the side of the
NCA 40.4. Take the white/black wires on the bypass plug, and plug
them into the yellow/black wires on the input harness of the NCA 70.2.
Take the red/black wires on the bypass plug, and plug them into the
green/black wires on the input harness of the NCA 70.2.

Step #1c:

If this is the 2nd amp in the bike and the “1st” amp is also a Hogtunes
NCA 70.2. Locate the Blue plug with red/black, and white/black wires
on it, and plug this into the expansion port (also a blue plug) located on
the input harness of the “1st” NCA 70.2. Take the white/black wires on
the bypass plug, and plug them into the yellow/black wires on the input
harness of the NCA 70.2 your now installing. Take the red/black wires
on the bypass plug, and plug them into the green/black wires on the
input harness of the NCA 70.2 your now installing.

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Step #2: Earlier in the install, you located the black four pin plug with the blue/

black and brown/black wires on it, and plugged it into the “ampli­fied output” on the amp. The blue/black wires will plug directly to the
speaker on the brake side of the bike. The brown/black wires will plug
directly to the speaker on the clutch side of the bike.

Step #3: The orange wire is the “remote turn on lead” and tells the amp to turn on

whenever it sees +12v (.5 amp min.). Unplug the factory center wire (+)
on the cigarette lighter. Plug the orange lead from the amplifier directly
onto the lighter using the female connector. Plug the factory lighter wire
to the male “take off” connector which is part of the amps orange turn
on lead. Important: If you do not attach the orange wire from the amp
to the center wire at the cigarette lighter, the amplifier will not turn on.
If the factory fuse for your cigarette lighter is blown, and your cigarette
lighter does not work, your amplifier will not turn on.

Step #4:

Routing the power harness -For Standards, Street Glide, EG
Classic, and Ultra Classic

For 98-06 bikes, the power harness will pass under the inner fairing
where the throttle and idle cables pass through on the brake side of the
bike. The harness is designed to be routed between the frame backbone
and gas tank on the brake side of the bike ,and come out just behind the
gas tank. You MAY need to undo the back bolt of the gas tank and pivot
the tank up to allow the harness to pass through at the back of the gas
tank. Be sure to re-install this bolt and torque to factory specs! For 07+
bikes, the balance of the main wire harness will pass under the inner
fairing where the main wire harness passes through on the brake side
of the bike. Loosen the tank console and run wires up and over the gas
tank, but under the tank console. There is a provision on the front of the
tank console for wires to pass. Secure the amplifiers harness to the bikes
factory harness’ using zip ties. When correctly installed, the power and
ground wires are the right length to connect onto the battery. Proceed to
Step #6.

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