Lanzar HTG138 Monoblock Mosfet Amplifier User Guide

: June 4, 2024
: Lanzar

Table of Contents

INTRODUCTION
PLANNING YOUR SYSTEM
CONNECTINGTHE POWER
WIRING CONNECTION
PANEL LAYOUT
CONTROL FUNCTIONS
System Diagrams
TROUBLESHOOTING GUIDE
Specification
Technical Specs:
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

Lanzar HTG138 Monoblock Mosfet Amplifier -
Figure HT0138
Mono-Block Mosfet Amplifier
2 Ohm Stable, Heritage Series
Car Audio Amplifier
User Guide

Lanzar HTG138 Monoblock Mosfet Amplifier - Fig
HTG158
Mono-Block Mosfet Amplifier
2 Ohm Stable, Heritage Series
Car Audio Amplifier
Mono-Block Mosfet Amplifier

INTRODUCTION

LANZAR amplifiers provide high-performance sound reinforcement for your mobile audio equipment. Its versatility enables compatibility with optional
Equalizers, Frequency Dividing Crossover Networks, and other audio processors in a customized system. The Multi-Mode bridging capabilities allow flexibility in hosting several different speaker configurations.
To achieve optimum performance, it is highly recommended that you read this
Owners Manual before beginning installation.
WARNING
High-powered audio systems in a vehicle are capable of generating “Live Concert” high levels of sound pressure. Continued exposure to excessively high volume sound levels may cause hearing loss or damage. Also, the operation of a motor vehicle while listening to audio equipment at high volume levels may impair your ability to hear external sounds such as; horns, warning signals, or emergency vehicles, thus contributing to a potential traffic hazard. In the interest of safety, LANZAR recommends listening at lower volume levels while driving.

PLANNING YOUR SYSTEM

Before beginning the installation, consider the following:
1. Do you plan to add additional mobile electronics equipment in the future?
If you plan to expand your system by adding other components sometime in the future, ensure adequate space is left and cooling requirements are met.
2. Should you use high or low-level inputs?
Your Amplifier has been designed to accept Low-Level (Pre-Amp outputs from your radio) source signal. If your radio/source is equipped with Pre-Amp outputs, it is possible to utilize them to drive the Amplifier and the 2 front speakers.
Then, use the built-in power of your radio to drive the 2 rear speakers.
3. Are your components matched?
The RMS power rating of your speaker(s) must be equal to or greater than the
RMS power rating of your amplifier. Your speaker(s) also must be 2- 8 Ohms impedance for stable amplifier operation. Impedance information is normally printed on the speaker basket or magnet.
4. Where will the amplifer be installed?
Consider both the length of your leads and routing when determining the mounting location. It is best to run power and RCA wiring on opposite sides of the vehicle to prevent induced noise. Pre-amp input jacks require a length of high-quality shielded male-to-male RCA patch cord.

CONNECTINGTHE POWER

CAUTION
AS A PRECAUTION, DISCONNECT THE POWER WIRE FROM THE BATTERY WHILE MAKING THE POWER AND GROUND CONNECTIONS TO THE AMPLIFIER.
4/8 GAUGE (Thicker if planning for additional Amplifiers) wire is recommended for both the power and ground wires 12 Gauge and for the remote turn-on wire 16 Gauge. Both types are available at most Mobile Audio Dealers or Installation shops.

WIRING CONNECTION

Ground: To Vehicle Chassis
To avoid unwanted ignition noise caused by ground loop, it is essential that the
Amplifier be grounded to a clean, bare, metal surface of the vehicle’s Chassis
NOTE:
GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3 FT. (1 METER).
+12 Volt (Fused) Constant Power: To Battery (+)
Due to the power requirements of the Amplifier, this connection should be
made directly to the positive (+) terminal of the battery. For safety measures, install an in-line Fuse Holder (not included) as close to the battery positive (+) terminal as possible with an ampere rating; not to exceed the total value of fuses in the Amp.
Remote Turn-On Input: To remote turn-on output of the Car Stereo
This Amplifer is turned “ON” remotely when the vehicle’s stereo is turned “ON”.
NOTE:
IF YOUR RADIO DOES NOT HAVEA +12 VOLT OUTPUT LEAD WHEN THE RADIO IS TURNED ON， THE “REMOTE” TERMINAL ON THE AMPLIFIER CAN BE CONNECTED TO VEHICLE’S ACCESSORY CIRCUIT THAT IS life WHEN THE KEY lS “ON”.

Lanzar HTG138 Monoblock Mosfet Amplifier - KEY

PANEL LAYOUT

Front View Lanzar HTG138 Monoblock Mosfet Amplifier - PANEL
L

Rear View Lanzar HTG138 Monoblock Mosfet Amplifier - Rear
View

CONTROL FUNCTIONS

RCA input jacks
These RCA input jacks are for use with source units that have RCA or Line level outputs. A source unit with a minimum level of 200mV is required for proper operation. The use of high-quality twisted pair cables is recommended to decrease the possibility of radiated noise entering the system.
GAIN Control
The level control will match the sensitivity of the amplifier to the source unit’s signal voltage. The Operating range is 200mV minimum to 6V maximum.
CAUTION: Do not run the amplifer at high volume for a long time, otherwise the loudspeakers will be damaged.
SUBSONIC
The frequency can be adjusted between 0Hz and 80Hz.
X-OVER
• Full pass x-over switch
When the switch is in the “Full” position, the full range is bypassed.
• Low pass x-over switch
When the switch is in the “LPF” position, frequencies lower than the low pass frequency setting are passed. The frequency can be adjusted between 50Hz and 250Hz.
• High pass x-over switch
When the switch is in the “HPF” position, frequencies higher than the high pass frequency setting are passed.
Low pass x-over frequency control
This control is used to select the desired low pass x-over frequency.
The frequency can be adjusted between 50Hz and 250Hz.
Bass BOOST
The boost can be selected among 0dB, 6dB, and 12dB.
REMOTE
Controls the subwoofer amplifer gain, from a remote location for ease of adjustment during listening.
Warning:
Do not connect a level control knob from other manufacturers to the Remote Sub Level Control of any amplifier. Even though the connectors it properly, the control knob and connector pin positions may be different and the amplifer will be damaged.
LED
Will illuminate GREEN to indicate the amplifer is on and operating normally, and will be illuminated RED if the amplifer shuts down due to a short circuit, DC of the set, or overheating detected by onboard protection circuitry.
Auxiliary outputs
The Auxiliary outputs offer LANZAR amplifier easy, unlimited system expansion.
Route RCAs from the line out of the first amplifer to the line input of a second amplifer when using a single source output.
GND
Connect this terminal directly to the sheet metal chassis of the vehicle, using the shortest wire necessary to make this connection. Always use wire of the same gauge or larger than the (+) 12-volt power wire. The chassis connection point should be scraped free of paint and dirt. Use only quality crimped and/ or soldered connectors at both ends of this wire.
Warning:
Do not connect this terminal directly to the vehicle battery ground terminal or any other factory ground points.
Remote Turn On
This terminal turns on the amplifer when (+) 12 volt is applied to it. Connect it to the remote and turn on the lead of the head unit or signal source. 12. (+) 12 Volt Power
Connect this terminal through a FUSE or CIRCUIT BREAKER to the positive terminal of the vehicle battery or the positive terminal of an isolated audio system battery.
Warning:
Always protect this power wire by installing a fuse or circuit breaker of the appropriate size within 12 inches of the battery terminal connection.
FUSE
These fuses protect the amplifer against internal electrical damage and are meant to protect the amplifer only. All other power connections should be fused at the source.
SPEAKERS
Connect subwoofers to these terminals.

System Diagrams

MONO Channel System Design #1
HTG138 – HTG158 Lanzar HTG138 Monoblock Mosfet Amplifier -System
Diagrams

California Prop 65 Warning
WARNING:
This product contains Nickel carbonate which is known to the state of California to cause cancer birth defects and other reproductive harm. Do not ingest. For more info go to: www.P65warnings.ca.gov

TROUBLESHOOTING GUIDE

SYMPTOMS CHECKPOINTS| CURE Check fuses in the amplifier. Be sure the Turn-on lead is connected
---|---
NO SOUND| Is the power LED illuminated?
| No power to the power wire| Repair power wires or connections
AMP NOT SWITCHING
ON| No power to the remote wire with the receiver on| Check connections to radio
NO| Fuse broken| Check fuse
SOUND| Check speaker leads| Inspect for short circuits or an open connection.
IN ONE
CHANNEL| Check audio input leads| Reverse Left and Right RCA inputs to determine if it is occurring before the amp.
Check the Tuner/Deck volume level. Clean contacts on fuse holders.
AMP TURNING OFF
MEDIUM/ HIGH VOLUME| Check speaker load impedance| Be sure proper speakers are used to ensuring impedance recommendations are observed. (If you use an Ohmmeter to check speaker resistance, please remember that DC resistance and AC impedance may not be the same.)

WARNINGS
Investigate the layout of your automobile thoroughly before drilling or cutting any holes. Take care when working near the gas tanks, lines, hydraulic lines, and electrical wiring. Don’t use a power amplifer unmounted. Attach this system securely to the automobile to prevent damage, particularly in the event of an accident. Don’t mount this system so that the wire connections are unprotected or are subject to pinching or damage from nearby objects. The +12V DC power wire must be fused at the battery-positive terminal connection. Before making or breaking power connections at this system’s power terminals, disconnect the +12V wire at the battery end. Confirm your radio/cassette player and/or other equipment is turned off while connecting the input jacks and speaker terminals. If you need to replace the power fuse, replace it only with a fuse identical to that applied to the system. Using a fuse of different types or ratings may result in damage to this system which isn’t covered by the warranty.