LP3-2 - Audio converter PAC - Free user manual and instructions

Product Type	Audio Converter
Brand	PAC
Model	LP3-2
Dimensions (W x D x H)	4.0 x 2.0 x 1.0 inches
Weight	0.25 lbs
Power Supply	USB 5V DC (cable included)
Power Consumption	< 0.5 W
Input Connectors	1x 3.5mm stereo jack, 1x RCA L/R
Output Connectors	1x 3.5mm stereo jack, 1x RCA L/R, 1x Optical TOSLINK
Supported Audio Formats	PCM 2.0 up to 24-bit / 192 kHz
Sample Rate	Up to 192 kHz
Bit Depth	Up to 24-bit
Signal-to-Noise Ratio (SNR)	≥ 100 dB
Total Harmonic Distortion (THD+N)	< 0.005%
Frequency Response	20 Hz – 20 kHz (±0.5 dB)
Housing Material	Aluminum alloy
Color	Black
Compatible Devices	Smartphones, computers, game consoles, TVs
Operating Temperature	0°C to 40°C
Storage Temperature	-20°C to 60°C
LED Indicators	Power (blue), Signal (green)
Warranty	1 year limited
Package Contents	LP3-2 unit, USB cable, 3.5mm cable, user manual

Frequently Asked Questions - LP3-2 PAC

What does the PAC LP3-2 audio converter do?

The LP3-2 converts analog audio signals (RCA or 3.5mm) to digital optical output, or vice versa, allowing connection between devices with different audio interfaces.

Does the LP3-2 require external power?

Yes, it is powered via the included USB cable. Connect it to a standard USB port (5V) from a computer or USB power adapter.

What is the maximum audio quality supported?

The converter supports PCM audio up to 24-bit / 192 kHz for high-resolution sound.

How do I connect the LP3-2 to my TV?

If your TV has analog audio output (RCA or 3.5mm), connect it to the input of LP3-2. Then connect an optical cable from the LP3-2 output to your soundbar or AV receiver.

Can I use the LP3-2 with a gaming console?

Yes, if your console has analog audio output (e.g., PS4 controller 3.5mm jack) and you need optical output for a headset or sound system.

Are the input and output plugs included?

The package includes a USB power cable and a 3.5mm audio cable. RCA cables and optical cables are not included.

Does the LP3-2 support DTS or Dolby?

No, it handles only stereo PCM signals. For surround formats, a different converter is needed.

Why is there no sound after connection?

Check that the power LED is on, all cables are fully inserted, and the source device is outputting audio. Also ensure the correct input is selected on the receiving device.

How do I clean the LP3-2?

Unplug the device and wipe it with a soft dry cloth. Do not use liquids or abrasives.

Is the LP3-2 compatible with USB-C?

The power input is standard USB-A. You can use a USB-A to USB-C adapter if your power source is USB-C only.

USER MANUAL LP3-2 PAC

Replacing your radio? PAC also produces RadioPRO ^™ which is a radio replacement solution, with steering wheel control retention built-in. This greatly expedites the installation of a new radio into your vehicle.

To see if there is a RadioPRO™ interface for your vehicle, visit www.pac-audio.com and search "Radio PRO".

Install It Right with L.O.C. PRO™

Don't cheat yourself out of all the performance your new radio or amplifier can deliver. Proper audio line level matching is critical when replacing your vehicle's factory (OEM) radio or amplifier. It can be the difference between a great sounding system that you enjoy every day and a buggy, noisy mess that drives you crazy. PAC L.O.C.PRO™ interfaces have been professionally designed for those who want the very best.

General Overview

The L.O.C.PRO™ LP3-2 can be used for adding amplifiers to a system that does not have RCA outputs. Level matching is achieved using precision stereo gain dials and will enable proper adjustment of audio output of the radio for optimum system performance. Included in these instructions are the most common applications for the L.O.C.PRO™ LP3-2.

For specialty applications not covered in this manual, please visit www.pac-audio.com for more comprehensive, vehicle specific wiring diagrams.

Direct url - www.pac-audio.com/products/locpro

Speaker Level Input to RCA Level Output

Speaker level input to RCA level output is the most commonly used scenario for the LP3-2.

Use this when you need to create RCA level outputs from a source that only has speaker level outputs.

The RCA input connectors on the main harness will not be utilized for this type of installation, we suggest cutting them off the harness 3 inches from the RCA end so they can be saved and used for a future installation. After all the connections are made, skip to the level adjustment section of this manual.

Note: If using large RCA connectors that are difficult to insert into housing, unsnap the L.O.C.PRO™ cover and remove end panel insert around RCA outputs.

New School –

Required items: Digital Multi-Meter, Test track media @ 1kHz and 100Hz. Max Amplifier Line-level Input Voltage Specification (i.e., 4vrms, 8vrms, etc.) Proper level adjustment is crucial for obtaining the best possible sound quality. Following the guidelines below will enable you to properly set the output gain of the LP3-2 using equipment that is readily available. Although this device can be set by ear (Old School), we recommend using a multi-meter and test tracks for pinpoint accuracy and the least chance of noise.

Amplifiers usually have 2, 4 or 8v max line-level input ratings but this can vary.

This max line-level input will be your target setting you will read on the multi-meter.

Example:

Amplifier 1 (Mid/High frequency) has a maximum 4v input voltage, so you will be targeting a 4 volt output voltage from the LP3-2.

or

Amplifier 1 (Sub frequency) has a maximum 2v input voltage, so you will be targeting a 2 volt output voltage from the LP3-2.

1. Start with gain adjustment levels on LP3-2 and amplifiers set to minimum.
2. Turn source unit to 34 maximum volume and start test track (1kHz for mid/high or full range, 100Hz for sub).
3. Choose either left or right channel - With multi-meter, test output of LP3-2. Probe with negative on RCA shield and positive in center of RCA output. (figure 1)

4. Slowly adjust level on LP3-2 until you reach the target voltage of the amplifier. (figure 2)

5. Turn volume down and system off.

6. Connect RCAs, set gains on amplifiers to minimum

7. Turn system on and fine tune gains of amplifier (if needed).

Old School –

1. Start with gain adjustment levels on LP3-2 and amplifiers set to minimum.
2. Turn source unit to 34 maximum volume and play a familiar song that has dynamic attributes.
   For example, if your volume goes to 40 you will turn it up to 30 and play a song that has some quiet sections and some really loud sections.
3. Slowly adjust front channel gain of LP3-2 until just a hint of distortion is audible, and then back down gain just under that threshold and the distortion goes away. (figure 2)

Figure 2

Note: If using large RCA connectors and have difficulty inserting into housing, unsnap the L.O.C.PRO™ cover and remove insert around RCA outputs.

Pacific Accessory Corporation

Santa Ana, CA 92705

[e-mail] • www.pac-audio.com