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      POWER Amplifiers

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Installation

Before you begin the installation of your Power series amp remember, there 
are two ways to do things – right and twice! Use the proper installation 
techniques, tools and accessories to ensure that your Jensen Power series 
amp will put out all the power it was designed to. If necessary, seek a 
professional installer to have the amplifier installed correctly. Most mobile amp 
installations do not have the proper gauge wire for power and ground – do not 
let your amp be a victim of this common installation oversight!

NOTE: This device is a high-power audio amplifier intended for 
installation in vehicles with a 12-Volt negative ground electrical system. 
Attempting to connect or operate the amplifier with another type of 
electrical system may cause damage to the amplifier or the electrical 
system.

Installation Assistance

Supplies and Tools Needed

To install the amplifier, you will need tools, supplies and adapters. It is best to 
make sure you have everything you need before you start.

Supplies

• Black electrical tape
• Amplifier Installation Kit

Tools

• Cordless drill with assortment of bits
• Flat-head and Philips screwdrivers
• Wire cutters/strippers
• Crimping tool
• 12-volt test light or digital multimeter
• Wire brush, sandpaper or scraping tool (ground connection to vehicle should

be a clean, unpainted metal surface)

Disconnect Battery

Disconnect the negative (-) battery cable before starting the installation. Check 
the battery ground (there should be two (2) ground wires coming from the 
battery – one going to the starter mounting bolt or engine block and another 

going to the vehicle chassis) and make sure the battery is grounded to the 
chassis with at least a #8 gauge wire. Also check the alternator connections, 
making sure they are tight and free from corrosion, rust or dirt. 

Location and Mounting

The amplifier’s compact design allows great flexibility in mounting. Common 
mounting locations include under the front passenger seat or in the trunk area.

When selecting a location, remember that amplifiers generate heat. Select a 
location on a flat surface away from heat and moisture where air can circulate 
around the amplifier.

Place the amplifier in the mounting location and mark the positions of the holes 
with a marker, pen or pencil. Carefully drill the mounting holes in the marked 
positions, then use the supplied mounting screws to securely fasten the 
amplifier to the mounting surface.

WARNING: Do not cover the amplifier with carpets or enclose it behind 
interior trim panels, and do not mount the amplifier in an inverted or 
upside down configuration. Be sure the mounting location and the 
drilling of pilot holes will not damage any wires, control cables, fuel 
lines, fuel tanks, hydraulic lines or other vehicle systems or components.

Routing Wires

Proper wiring connections are illustrated on the following pages. If wiring 
connections are made incorrectly, the unit will not operate properly and could 
become permanently damaged. Follow the installation instructions carefully, or 
have the amplifier installed by an experienced technician.

Summary of Contents for 1050

Page 1: ... Manual Contents Introduction 1 Features and Specifications 2 Installation 3 Power Wiring 4 Speaker Wiring 6 Indicators and Controls 10 Testing 11 Remote Input Level Control 11 Troubleshooting 12 CEA Power Output 13 400 760 880 900 920 1050 ...

Page 2: ... feel confident that your Jensen purchase decision was a sound one and remember If it s Too Loud You re Too Old Before You Begin We need to get the legal stuff out of the way so please keep reading Afterwards you ll be armed with the knowledge to install your new hard hitting speaker pumping Jensen amplifier Exposure to loud sounds or music can permanently damage your hearing Unfortunately in many...

Page 3: ...Switch Stereo Mono Mode Switch Power 400 and 880 only 2 3 4 Channel Mode Switch Power 760 and 920 only Power 900 1050 Mono Subwoofer Amp Low Pass Filter 40 240 Hz Power 900 Low Pass Filter 40 150 Hz Power 1050 Subsonic Filter 10 40 Hz 12dB octave Power 900 Subsonic Filter 15 55 Hz 12dB octave Power 1050 Remote Input Level Control Remote Bass Control w 5 Meter Interface Cable Specifications Power 4...

Page 4: ...Check the battery ground there should be two 2 ground wires coming from the battery one going to the starter mounting bolt or engine block and another going to the vehicle chassis and make sure the battery is grounded to the chassis with at least a 8 gauge wire Also check the alternator connections making sure they are tight and free from corrosion rust or dirt Location and Mounting The amplifier ...

Page 5: ...eries can be installed if desired Use the following recommended wire gauge as a guide when installing your amplifier s Power Terminal 12V B Connect the main power wire to the battery within 18 inches from the positive battery post using an adequate size fuse or circuit breaker capable of handling the current of the selected power wire A fuse or circuit breaker must be installed to prevent a possib...

Page 6: ... bare metal Use a ring terminal of the proper gauge and an outside star washer between the chassis and ring terminal when making your ground connection Although you ve scraped away the paint to expose bare metal the outside star washer will help to bite into the chassis for a tight secure ground Replacement Fuse Requirements FUSE Model Quantity Amps Type 400 1 25 ATO 760 2 20 ATO 880 2 30 ATO 900 ...

Page 7: ...ok the use of the proper gauge speaker wire The Power series of amplifiers require a minimum of 12 gauge wire Power 900 1050 Two Subwoofer One Subwoofer Power 400 880 Two Speakers One Subwoofer Tri Mode 4 ohm 4 ohm SPEAKER OUTPUT 4 ohm nominal SPEAKER OUTPUT SPEAKER OUTPUT LEFT RIGHT BRIDGED 4 ohm nominal MONO STEREO MODE X OVER FULL LPF HPF 4 ohm nominal LEFT RIGHT BRIDGED SPEAKER OUTPUT MONO STE...

Page 8: ... 4 ohm nominal 2 ohm minimum 4 ohm nominal 2 ohm minimum CH1 CH2 CH3 CH4 BRIDGED X OVER FULL LPF HPF FULL LPF HPF 4 ohm nominal 2 ohm minimum 4 ohm nominal CH1 CH2 CH3 CH4 BRIDGED X OVER FULL LPF HPF FULL LPF HPF 4 ohm nominal 4 ohm nominal CH1 CH2 CH3 CH4 BRIDGED X OVER FULL LPF HPF FULL LPF HPF ...

Page 9: ...CAR STEREO SOURCE UNIT RCA Cable CAR STEREO SOURCE UNIT Input Wiring Mono Mode Input Wiring Stereo Mode RCA Cable CAR STEREO SOURCE UNIT RCA Cable CAR STEREO SOURCE UNIT Input Wiring Mono Mode Input Wiring Mono Mode min max 0dB 12dB 40Hz 300Hz 40Hz 300Hz min max 0dB 12dB 40Hz 300Hz 40Hz 300Hz LEVEL BASS EQ HPF LPF X OVER FULL LPF HPF FULL LPF HPF 2 3 4 MODE LINE OUT 2 Channel CH3 CH4 CH1 CH2 LINE ...

Page 10: ... best results Connecting Additional Amplifiers Pass Thru RCA connectors are provided to connect additional amplifiers without the need to purchase Y adapters min max 0dB 12dB 40Hz 300Hz 40Hz 300Hz min max 0dB 12dB 40Hz 300Hz 40Hz 300Hz LEVEL BASS EQ HPF LPF X OVER FULL LPF HPF FULL LPF HPF 2 3 4 MODE LINE OUT CH3 CH4 CH1 CH2 LINE INPUT 4 Channel 2 3 4 MODE ...

Page 11: ...typically use a higher crossover setting between 125Hz and 150Hz Since musical tastes vary you should play music that you would normally listen to in your vehicle with the above settings as a starting point If necessary set the crossover by ear High Pass Filter HPF The high pass filter will limit the low frequencies being transmitted to your speakers This can be useful in number of situations For ...

Page 12: ...ntrol The Power 900 and 1050 come equipped with a Remote Input Level Control The Remote Input Level Control allows the input level to be adjusted from an alternate location It can be mounted under dash or in dash When the amplifier is used to drive subwoofers and the low pass crossover is activated the Remote Input Level Control can be used as a remote bass level control This enables you to contro...

Page 13: ...ternator whine Ground loop s Use good quality shielded RCA cables Faulty ground at amp Re ground amp to clean bare metal chassis Faulty ground at head unit Re ground head unit to clean bare metal chassis Inductive coupling Re route RCA and or speaker wires away from factory harnesses Input level on amp set too high Re adjust input level refer to page 8 Thermal protection activated Amplifier drivin...

Page 14: ... 200 watts RMS X 2 channels into 2 ohms 1 THD N 410 watts RMS X 1 channels Bridged Mono into 4 ohms 1 THD N Frequency Response 10Hz to 60kHz 3dB Reference 1 watt Dimensions L14 0 x H2 5 x W9 0 Power 900 Power Output 230 watts RMS X 1 channels into 4 ohms 1 THD N Signal to Noise Ratio 100dBA below reference Reference 1 watt 4 ohms Additional Power Output 340 watts RMS X 1 channels into 2 ohms 1 THD...

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