Legacy Car Audio LA1438, LA838 Bridged Mono Output, CH Stereo plus Mono-Bridged Subwoofer Output

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L A 4 3 8 L A 5 3 8 L A 7 3 8 L A 9 3 8 LA1438 LA1838 LA2038

2CH AMPS

Bridged Mono Output

MINIMUM

SPEAKER

IMPEDANCE

speaker 4 OHMS!

L R

Mono

Subwoofer

speakers

MINIMUM SPEAKER IMPEDANCE 4 OHMS!

L A 6 3 8

L A 8 3 8

LA1038

4CH AMPS

2 CH Stereo plus Mono-Bridged Subwoofer Output

Amplifier will not power up.

Check for good ground connection.

Check that remote DC terminal has at least +12v DC.

Check that there is battery power on the + terminal.

Check all fuses.

Check that Protection LED is not lit. If it is lit, shut off amplifier briefly and then repower it.

STOP

11

L A 6 3 8 L A 8 3 8 LA1038

4CH AMPS

High hiss or engine noise (alternator whine) in speakers.

Disconnect all RCA inputs to the amplifier(s) – if hiss/noise disappears, then plug in the component driving the amplifier and unplug its inputs. If hiss/noise disappears, go on until the faulty/noisy component is found.

It is best to set the amplifier's input level as insensitive as possible. The best subjective S/N ratio is obtainable this way. Try to drive as high a signal level from the head unit as possible.

Protection LED comes on when the amplifier is powered up.

4 ohm

2 -c hannel A m p l i f i e r (Operating in Stereo)

YES! 4 ohm

Two 4-ohm speakers, wired in stereo, will present a 4-ohm load to each channel of the amplifier. Most two- channel amplifiers will work well in this configuration.

sound around, Inc.

1600 63rd street. brooklyn. ny 11204

 

4 ohm

2 -c hannel Amplifier

 

(Operating in

 

Bridged Mono)

 

NO!

4 ohm

Two 4-ohm speakers, wired in parallel to a bridged two-channel amplifier. will present a 2-ohm mono load to the amplifier. MOST TWO-CHANNEL

AMPLIFIERS DO NOT SUPPORT 2-OHM MONO OPERATION! AMPLIFIER DAMAGE COULD RESULT!

2 CH Mono-Bridged Output

• Check

for shorts on speaker leads.

Check

that the volume control on the head unit is turned

down low.

Remove speaker leads, and reset the amplifier. If the

Protection LED still comes on, then the amplifier is faulty.

STOP

 

speakers

 

 

MINIMUM

 

L

SPEAKER

R

 

IMPEDANCE

 

 

4 OHMS!

 

Amplifier(s) gets very hot.

Check that the minimum speaker impedance for that model is correct.

Check for speaker shorts.

Check that there is good airflow around the amplifier. In some applications, an external cooling fan may be required.

4 ohm

4 ohm

4 -c hannel Amplifier (Operating in Stereo)

4 ohm

4 ohm

4 ohm

4 -c hannel Amplifier

(Operating in

Bridged Mono)

4 ohm

Distorted sound

• Check that the Level control(s) is set to match the signal

YES! 4 ohm

NO!

4 ohm

level of the

head unit.

Check

that all crossover frequencies are properly set.

Check

for

shorts on the speaker leads.

High squeal noise from speakers.

Four 4-ohm speakers, wired in stereo, will present a 4-ohm load to each channel of the amplifier. Most four- channel amplifiers will work well in this configuration.

sound around, Inc.

1600 63rd street. brooklyn. ny 11204

Four 4-ohm speakers, wired in parallel to a bridged four-channel amplifier, will present a 4-ohm mono load to the amplifier. MOST FOUR-CHANNEL

AMPLIFIERS DO NOT SUPPORT 2-OHM MONO OPERATION! AMPLIFIER DAMAGE COULD RESULT!

Speaker Connections

• This is almost always caused by a poorly-grounded RCA

patch cord. troubleshootingTroubleshooting

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Contents CAR Amplifier LA1038 LA1438 LA1838 LA2038 American Legacy amplifierLA438/538/738/938/1438/1838/2038 Features and ControlsLow Level Stereo Input ConnectionL a 5 3 4 37 3 9 3 LA1438 LA1838 LA2038 All models4 3 5 3 7 3 9 3 6 3 8 3 LA1038Basic Stereo Output 4 3 8 L a 5 3 8 L a 7 3 8 L a 9 3 8 LA1438 LA1838 LA20386 3 8 L a 8 3 8 LA1038 High Level 4 CH Stereo InputCH Stereo plus Mono-Bridged Subwoofer Output Bridged Mono OutputCH Mono-Bridged Output

LA1438, LA838, LA2038, LA1038, LA738 specifications

Legacy Car Audio offers a diverse range of high-quality car audio systems, designed to enhance your in-car listening experience. Among their lineup, the LA938, LA538, LA638, LA1838, and LA738 models stand out for their unique features, advanced technologies, and impressive characteristics.

The Legacy LA938 is a powerful multimedia receiver that supports Bluetooth connectivity, allowing for hands-free calling and wireless audio streaming. This model features a built-in USB port, enabling users to charge devices while enjoying music. The LA938 also comes with a 7-inch touchscreen display, offering an intuitive user interface that allows for easy navigation. With impressive sound customization options, including a 7-band equalizer, users can tailor audio output to their personal preferences.

Next up, the LA538 model is a compact and versatile receiver. Its sleek design is complemented by a user-friendly interface. The LA538 supports various media formats, including MP3, WMA, and FLAC, ensuring that you can enjoy your favorite tracks. This model also includes a front auxiliary input, making it compatible with various devices. Its powerful output ensures clear sound quality, making it a great choice for those who appreciate quality audio on the road.

The LA638 is another noteworthy unit that offers an impressive range of features. This model boasts a 6.2-inch touchscreen display and supports both Android and iOS devices via Bluetooth. The LA638 includes customizable LED lighting, which adds a touch of personalization to your car's interior. It also supports rearview camera integration, enhancing driving safety by providing a clear view of the area behind your vehicle.

Moving on to the LA1838, this model is designed for those who prioritize power and performance. With a robust amplifier built-in, the LA1838 delivers exceptional sound quality that can fill any car with rich audio. The receiver supports various audio formats and offers extensive sound tuning features, including a 10-band equalizer, allowing audiophiles to adjust frequency ranges effectively.

Finally, the LA738 is an entry-level receiver that does not compromise on quality. Ideal for budget-conscious consumers, it offers the essential features like USB and auxiliary inputs, Bluetooth connectivity, and a clean, user-friendly interface. With solid performance and reliability, the LA738 ensures an enjoyable listening experience without breaking the bank.

In summary, Legacy Car Audio’s lineup of the LA938, LA538, LA638, LA1838, and LA738 models provides options for every type of car audio enthusiast. With advanced technologies and user-centric features, these receivers elevate the listening experience and prove that quality sound is attainable for all drivers.