Fosi Audio BOX X2 User Manual

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Fosi Audio BOX X2 User Manual

Fosi Audio BOX X2 Specifications

General

SNR	≥110dB
Frequency Response	20Hz - 20kHz
Input	RCA
Power Supply	DC12V
Input Sensitivity	200mV
Output Impedance	300Ω

Summary

Product Specifications

Product Overview and Control Functions

Package Contents

Quick Setup Guide

Troubleshooting and Frequently Asked Questions

Troubleshooting Noise and Humming

Addresses issues of noise or humming when the BOX X2 is powered on and provides solutions.

Troubleshooting No Audio Output

Guides users on diagnosing and resolving issues when no audio output is produced from the device.

Distinguishing Power and Gain Controls

Explains how to differentiate between the power switch and gain adjustment functions on the multi-function knob.

Switching Between Audio Inputs

Details how to switch between the MM turntable input and the 3.5mm AUX input on the BOX X2.

Ground Wire Connection for Turntables

Addresses whether a ground wire connection is necessary for turntables without one.

Attaching the Ground Wire

Provides instructions on how to properly attach the ground wire to the grounding post.

Grounding Post with Fork Spade Terminals

Explains how to connect fork spade type terminals to the grounding post for proper grounding.

Analog to Digital Conversion

Clarifies that the product does not perform analog to digital conversion, functioning as a phono preamp.

Gain Support for MC Cartridges

Confirms that the BOX X2 is designed for MM cartridges and not MC cartridges.

Using with Turntables with Built-in Preamp

Guides on using the BOX X2 when the turntable has an optional built-in phono preamp.

Connecting to Power Amplifier

Explains how to connect the BOX X2 to a power amplifier via the RCA output for system integration.

Compatibility with Headphones

States that the BOX X2 does not have a headphone output and cannot be used directly with headphones.

Direct Connection to Speakers

Details how to connect the phono preamp directly to powered speakers or with an amplifier for passive speakers.

RIAA Equalization

Confirms that the preamp incorporates RIAA equalization for accurate phono playback.

Connecting a Subwoofer

Explains how to connect powered or passive subwoofers to the BOX X2, noting the need for a sub amplifier.

Vacuum Tube Replacements

Lists compatible vacuum tube substitutions for the BOX X2 for DIY customization.

Troubleshooting Poor Sound Quality

Provides steps to improve sound quality, including checking connections, adjusting gain, and testing sources/cables.

Continuous Operation of BOX X2

Confirms the BOX X2 can be left connected safely with the power switch turned off when not in use.

Damaged Vacuum Tube Issues

Addresses issues with damaged vacuum tubes due to transportation and provides contact information for replacement.

Comparison Section

Warranty Information

About Fosi Audio