ZD-1350.1D 1350W RMS Class-D Monoblock Amplifier
Product Information
The product is an amplifier designed for use in a vehicle audio
system. It requires proper power and ground cable connections, as
well as correct fuse sizing. The amplifier has various models with
different specifications, including fuse size and cable size
requirements.
Power Cable Size and Fusing
| Model | Fuse Size | Cable Size |
|---|---|---|
| ZD-1350.1D | External 80A | 4ga |
| ZD-1250.2D | External 35A | 2ga |
| ZD-750.4D | External 60A | 2ga |
| ZD-1350.4D | External 60A | 2ga |
| ZD-1750.5D | External 100A | 2ga |
| ZD-1950.1D | External 100A | 2ga |
| ZD-2550.1D | External 125A | 2ga |
| ZD-3350.1D | External 175A | 2ga |
Product Usage Instructions
Installation
- Disconnect the negative battery terminal. Ensure the terminal
is placed securely to avoid accidental contact with the negative
battery post. - Properly route power, speaker, and RCA cables through the
vehicle. - Choose a mounting location for the amplifier that provides
adequate air ventilation. Mount the amplifier securely, ensuring it
is not upside down. - The chassis ground connection is critical. Choose a location
close to the amplifier, scrape away any paint, and use a nut and
bolt for a secure connection. Do not use an existing factory
bolt. - Attach the chassis ground cable to the amplifier’s negative
terminal, ensuring a tight connection. - Attach the remote turn-on wire to the amplifier’s remote output
of the source unit. - Attach the main power cable to the amplifier’s +12V terminal.
The cable must run directly to the battery, be properly fused, and
have a tight connection. - Connect the RCA cables to the corresponding RCA input number
that matches the speaker output number. - Refer to Hifonics.com/product-manuals for the Auto-Sense
Technical Guide for turn on mode settings. - Using spade terminals, connect the speaker cables to the
appropriate speaker output connectors based on the diagram
provided. - Connect the power cable to the positive battery terminal.
Ensure the power cable is fused within 18 inches of the battery
terminal. - Be prepared to disarm your vehicle’s alarm and enter your
radio/source unit code. - Re-connect the negative battery terminal securely.
Setup
Additional setup instructions may be found in the product manual
or on Hifonics.com/product-manuals.
Before you start
CAUTION
Many new and factory radios require a reset code when disconnected from battery power. This is an anti-theft
feature. Before unplugging power, you must determine if your radio/source unit requires a reset code. Check the operation manual for your vehicle or contact the dealer.
Power cable size and fusing
Model
Fuse Size Cable Size
It is critical to use the proper power and ground cable. Select the size listed here for your amplifier model. Always use high quality copper cable. Visit our website for multi amp system cable recommendations.
Be sure to use the proper fuse size for each model.
ZD-1350.1D ZD-1250.2D ZD-750.4D ZD-1350.4D ZD-1750.5D ZD-1950.1D ZD-2550.1D
External 80A External 35A External 60A External 60A External 100A External 100A External 125A
ZD-3350.1D External 175A
4ga 2ga
Installation 1 Disconnect
negative battery terminal
Place terminal in a secure position so that it won’t accidentally contact the negative battery post
2 Run Cables
Properly route power, speaker and RCA cables through the vehicle.
3 Mount Amplifier
Choose a mounting location that will provide adequate air ventilation. Mount the amplifier to a secure surface. Do not mount the amplifier upside down.
4 Chassis Ground
The chassis ground connection is critical to the performance of the amplifier. Choose a location that is close to the amplifier. Completely scrape away the paint and use a nut and bolt if possible. DO NOT USE AN EXISTING FACTORY BOLT!
5 Negative Power
Connection
Bare metal
Attach the chassis ground cable to the amplifier negative terminal. It is important to make sure this connection is very tight.
6 Remote Turn-on
Connection
Attach the remote turn on wire to the amplifier remote output of the source unit.
7 Positive Power
POWER
Connection
Attach the main power cable to the amplifier +12V. The cable must run directly to the battery and be properly fused and be very tight.
8 Signal Input
Connection
Connect the RCA cables to the coordinating RCA input number that will match the speaker outputs number.
9 Turn on Mode
Please check Hifonics.com/product-manuals for the Auto-Sense Technical Guide.
MODE
High Level Input – DC turn on – Signal Sense turn on
Low Level Input – REM turn on (Remote wire turn on)
REM DC SIGNAL ON ON ON
NOTE – When using low level input and the RCA’s are plugged into the amplifier and the TURN ON MODE is in the DC ON position, the amplifier will NOT turn on. Please re-read QR document above or hire a professional installer.
10 Speaker
Connections
Using spade terminals,connect the speaker cables to the speaker output connectors. Follow the diagram below that best fits your speaker configuration.
Stereo
SPEAKER
CH1
CH2
Bridged
SPEAKER
Monoblock single woofer Monoblock multiple woofers
11 Positive Battery
Connection
Connect the power cable to the positive battery terminal. The power cable must be fused within 18 inches of the battery terminal.
Be prepared to disarm your vehicle’s alarm and to enter your radio / source unit code.
12 Re-connect
Negative Battery Terminal
Re-connect the negative battery terminal making sure it is securely tightened.
Setup
A
Input Mode
B
Crossover Mode
2CH – Input: CH1/CH2 Output: CH1/CH2/CH3/CH4
4CH – Input: CH1/CH2/CH3/CH4 Output: CH1/CH2/CH3/CH4
2CH – Input: CH1/CH2 Output: CH1/CH2/CH3/CH4/CH5
4CH – Input: CH1/CH2/CH3/CH4 Output: CH1/CH2/CH3/CH4/CH5
5CH – Input: CH1/CH2/CH3/CH4/CH5 Output: CH1/CH2/CH3/CH4/CH5
INPUT MODE INPUT MODE
2CH 4CH 5CH
2CH
4CH
The Crossover Mode switch sets the type of crossover that will be active. 4 channel models will have two switches, one for each set of channels.
X-OVER
HPF LPF FULL
C
High pass Adjustment
D
Low pass Adjustment
The HPF(high pass filter) control will limit the HPF output below the selected frequency. This is typically used to protect midrange and hi
frequency speakers from damage and to 50Hz 250Hz allow a smooth transition from a subwoofer.
SUBSONIC 15Hz 40Hz
The LPF(low pass filter) control will limit output above the selected frequency. This is used to allow a smooth transition to the higher
frequency speakers.
LPF 50Hz 250Hz
E
Bass Boost
The Bass Boost control will increase the power output at 45Hz for more pronounced bass. Exercise caution when using this
control. Increase the level in small amounts
until distortion is noticed, then back off a little.
BASS BOOST 0dB 12dB
F
Remote Level Control
Some models include a bass remote. Avoid adjusting the bass remote while operating vehicle.
G
Level Setting
This is a critical step to insure your amplifier is properly adjusted to match the signal output level of your source unit.
THIS IS NOT A VOLUME CONTROL!
LEVEL
12v
0.2v
1. If possible, with the source unit off, confirm that the primary volume control is turned down (counter clockwise).
2. Turn on the source unit (CD, or MP3 player). Re-confirm that the volume is turned down. Make sure the source unit controls; balance, fader, bass and treble are all set to center or “0” adjustment. Make sure that the green LED on the end of the amplifier is illuminated.
3. Play a clean musical selection of which you are very familiar. CD is preferred. Do not use radio signals for level setting. Hit play and start turning the volume of the source unit up.
4. Stop increasing the source unit volume when you reach 3/4 (about 75%) or until you hear speakers begin to slightly start producing distortion.
5. Increase the amplifier level (clockwise) until distortion is heard, then back the level down (counter clockwise) until the distortion is eliminated. Small adjustments may need to be made to balance the levels of multiple amplifiers.
Common System Setup
Mono
15Hz
50Hz 250Hz
2ch – Full Range
4ch – Full Range
50Hz 250Hz
50Hz 250Hz
4ch – Mixed Mono
50Hz 250Hz
5ch
50Hz 250Hz
50Hz 250Hz
50Hz 250Hz
50Hz 250Hz
15Hz 40Hz
HF-U-01
250Hz 250Hz
The information contained within this document is intended to offer some basic guidelines for a few of the most common installations. More complex audio systems should be installed by a competent professional.
Additional installation information available at www.maxxsonics.com
WARRANTY Maxxsonics, LLC. warrants this product, to the original consumer purchaser, to be free from defects in material and workmanship for a period of one (1) year from the date of purchase. Maxxsonics, LLC. will, at it’s discretion, repair or replace defective products during the warranty period. Components that prove to be defective in materials and workmanship under proper installation and use must be returned to the original authorized Maxxsonics, LLC. retailer from where it was purchased. A photocopy of the original receipt must accompany the product being returned. The costs associated with removal, re-installation and freight are not the responsibility of Maxxsonics, LLC. This warranty is limited to defective parts and specifically excludes any incidental or consequential damages connected therewith. To view the full warranty, please visit the website.
HIFONICS products are designed and engineered in the USA by
www.maxxsonics.com
HF ZD QSG 01 – rev1
Quick Start Installation Guide
ZD-1350.1D ZD-1950.1D ZD-2550.1D ZD-3350.1D ZD-1250.2D ZD-750.4D ZD-1350.4D ZD-1750.5D
Congratulations on your choice of a Hifonics amplifier. This “Quick Start Installation” guide is meant to help you “hook up” and play music. For more detailed information, on system setting, speaker and subwoofer configuration
and full specifications by model visit the website, http://hifonics.com/manuals.html


















