XINYI Sini Audio XY-S350H User Manual

XY-S350H 220W*2+350W HIFI 2.1 Bluetooth 5.1 Amplifier Module
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XY-S350H 220W*2+350W HIFI 2.1 Bluetooth 5.1 Amplifier
1.Description:
XY-S350H is a high-power 220W*2+350W Subwoofer Treble/Bass adjustable stereo 2.1 HIFI
Bluetooth 5.1 audio amplifier module which also can be control by APP Sinilink. 2.1 channels audio signal
output.Built-in amplifier module therefore it can connect to loudspeaker directly. It supports Bluetooth
music receive and AUX/USB audio input. It is ideal for DIY wireless Bluetooth speakers and
transponders.
2.Features:
1>.APP can set Bluetooth name and password
2>.ON/OFF prompt and adjust prompt volume
3>.Pure HIFI sound quality
4>.250W subwoofer
5>.220W*2 treble/bass
6>.Bluetooth/AUX/U-disk/USB sound card audio input
7>.Active/Passive audio output
8>.High fidelity sound
3.Parameters:
1>.Product name:XY-S350H 220W*2+350W HIFI 2.1 Bluetooth 5.1 Amplifier Module
2>.Model:XY-S350H
3>.Work Voltage:DC 12V-38V(15V or more recommended)
4>.Work Current:>10A
5>.Unique function:Sinilink APP control
6>.Controller IC: TPA3251
7>.Channel:2.1 channel stereo output
8>.Bluetooth:BLE 5.1
9>.Audio input type:Bluetooth/AUX/U-disk/USB sound card
10>.Audio output type:Left/Right/Subwoofer
11>.Adjust volume:Encoder independent adjustment
12>.Frequency range:20Hz-20KHz
13>.SIGNAL-NOISE RATIO:92dB
14>.Output:220W*2+350W
15>.Left/Right max output power:220W/3ohm/36V or 175W/4ohm/36V or 100W/8ohm/36V
16>.Subwoofer max output power:350W/2ohm/36V or 250W/3ohm/36V or 195W/4ohm/36V
17>.Communication distance:15meter(Max)
18>.Over temperature protection:Yes
19>.Short circuit protection:Yes
20>.Over voltage protection:Yes
21>.Under voltage protection:Yes
22>.Clipping protection:Yes
23>.Work Temperature:-40℃~85℃
24>.Work Humidity:0%~95%RH
25>.Module Size(Installed):130*116*27mm
4.Use steps:
1>.Choose the right speaker and connect as shown in wiring diagram.
2>.Connect to right power supply from input terminal.LED indicator will flashing and it means that
module enters pairing mode.And then speak prompt voice and it means that module is waiting for pairing.
3>.Turn ON Bluetooth on phone.
4>.Select Bluetooth device ‘XinYi’ or modified name in your Bluetooth device listing.
5>.LED indicator will keep ON and it means that module is successfully connected and is waiting for
playing.
6>.Module will playing music after select music on phone.LED indicator will keep slowly blinking.
7>.Adjust 5 potentiometer to change Subwoofer/Treble/Bass volume as you need.
8>.Open APP Sinilink and register an account if need control by APP.
9>.Click the dot with Bluetooth logo(in the middle).
10>.Select ‘Bluetooth devices’ and then Search Bluetooth.
11>.Select devices ‘Sinilink-APP’ to connect module.
12>.User can adjust volume, select next or previous, play/pause, select EQ, set name and password.
13>.Module will speak prompt voice if disconnected.
5.Application:
1>.Modified/repair/replace speaker
2>.Amplifier equipment for training/activity site and so on
3>.Car Bluetooth device
4>.Music Festival Party

XINYI Sini Audio XY-S350H Specifications

General

Brand	XINYI Sini Audio
Model	XY-S350H
Category	Amplifier
Language	English

Summary

Product Description

Module Overview

High-power 2.1 HIFI Bluetooth 5.1 amplifier module for DIY wireless speakers and transponders.

Key Features

APP Control and Connectivity

Supports APP control, Bluetooth 5.1, AUX/USB audio input, and active/passive audio output.

Sound Quality and Adjustments

Pure HIFI sound quality with adjustable subwoofer, treble, and bass.

Technical Specifications

Power and Voltage Requirements

Operates on DC 12V-38V, >10A current. Recommended 15V+ and 24V for best performance.

Audio Output and Power Ratings

2.1 channel stereo output. Max output: 220W*2 (L/R), 350W (Subwoofer).

Connectivity and Frequency Range

Bluetooth 5.1, AUX, U-disk, USB sound card input. Frequency range 20Hz-20KHz.

Protections and Environmental Conditions

Includes over temperature, short circuit, voltage protections. Operates -40℃~85℃.

Operating Instructions

Initial Setup and Bluetooth Pairing

Connect speakers and power. Turn on Bluetooth and select 'XinYi' for pairing.

Volume and Tone Adjustment

Use potentiometers to adjust main volume, subwoofer, treble, and bass levels.

Sinilink APP Control

Register and connect via APP for advanced control of volume, playback, EQ, and settings.

Application Scenarios

Usage Examples

Suitable for DIY speaker modifications, amplifier upgrades, car audio, and event systems.

Important Notes and Precautions

Placement and Signal Interference

Keep away from WIFI signals to prevent interference. Use short wires for signal integrity.

Power Supply and Speaker Matching

Ensure adequate voltage (>15V) and current (>10A). Match speaker impedance (4ohm recommended).

Frequently Asked Questions

Power Supply Adapter Selection

Use low-ripple 24V/>10A supply. 36V recommended for 8ohm speakers. Avoid low voltage/current.

Speaker Selection Guide

Use 4-8ohm speakers for L/R. Subwoofer needs specific type (>20Hz cutoff).

Input Mode Priority

AUX/USB has priority over Bluetooth. Disconnect AUX/USB to enable Bluetooth.

Troubleshooting Sound Quality Issues

Turbidity/distortion suggests insufficient voltage/current. Increase adapter power or lower volume.

Troubleshooting Power/Pause Issues

Check adapter, power supply stability, and potential overheating for pause/power issues.

Adjusting Main Volume

Use the Master-VOL potentiometer. Turning right increases volume.

Adjusting Treble and Bass

Use R&L BASS and R&L TREBLE potentiometers. Turn right to enhance, left to attenuate.

Adjusting Subwoofer Volume and Frequency

Use Subwoofer-VOL for volume and Subwoofer-FREQ for cut-off frequency (20Hz-200Hz).

Factors Affecting Sound Quality

Sound quality depends on module, power supply, source, and overall system components.

Package Contents

Included Items

Includes amplifier module, aluminum alloy shell, knobs, screwdriver, and mounting hardware.