MUSIC HALL us-1 - User Manual

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Summary

Important Safety Instructions

General Safety Rules

Covers reading, retaining, heeding, and following all operating instructions.

Environmental and Placement Safety

Details safe placement near water, heat sources, and proper grounding.

Operational, Maintenance & Service Safety

Covers cord protection, cleaning, ventilation, accessories, service, and part safety.

Specific Hazard Precautions

Advises on protection against lightning and power-line surges.

Line Voltage Selection

Line Voltage Setting

Instructions for setting the turntable's voltage for different countries.

Before Use

Included Parts Check

List of components included in the package for initial setup.

Pre-use Notes

Important reminders before powering on and using the turntable.

Assembly

Cartridge Installation

Guide for connecting and mounting the audio cartridge to the headshell.

Stylus Balance and Pressure Adjustment

Steps to balance the tonearm and set the correct stylus tracking force.

Anti-Skate Setting

Procedure for setting the anti-skate control to match stylus pressure.

Placement

Optimal Placement Guidelines

Recommendations for placing the turntable away from heat, humidity, and vibrations.

Connections

Connecting to Amplifier

Instructions for connecting the turntable's RCA output to an amplifier's phono input.

Phono;Line Output Switch

Guidance on using the switch for phono or line level output.

Operations

Turntable Power On and Record Setup

Steps to turn on the unit, place a record, and set the speed.

Starting Playback

Procedure for lowering the tonearm and starting the record playback.

Stopping Playback and Suspend Play

Instructions for stopping the platter and temporarily lifting the tonearm.

Changing the Speed

Speed Adjustment and Monitoring

Details on using the pitch control and strobe indicators for speed.

Maintenance

Stylus and Unit Cleaning

Recommendations for cleaning the stylus, dust cover, and cabinet.

Controls Overview

Key Turntable Components

Identification and function of the 45-rpm adaptor, platter, and strobe indicators.

Main Controls and Features

Explanation of power switch, start/stop, headshell, tone arm, and speed select buttons.

Advanced Controls

Details on pitch control, anti-skate, and output selector settings.

Specifications

General and Turntable Specifications

Details on model, dimensions, power, speeds, and motor.

Tonearm and EQ Amp Specifications

Technical data for the tonearm, tracking, and audio output.

Warranty and Contact Information

Product Warranty Terms

Details on the one-year limited warranty and exclusions.

Claims and Contact Information

Procedure for warranty claims and contact details for further assistance.

The Music Hall US-1 is a professional belt-drive turntable designed for playing vinyl records. It features a static-balanced S-shaped tonearm with a detachable headshell and offers two playback speeds: 33 1/3 and 45 RPM. The turntable is equipped with a DC motor and a 330mm diameter aluminum platter.

Function Description:

The primary function of the US-1 is to play vinyl records. It includes a tonearm with a cartridge and stylus that tracks the grooves of a record, converting the physical vibrations into an electrical signal. This signal can then be amplified and played through a sound system. The turntable offers both PHONO and LINE output options, allowing it to be connected to various audio equipment, including amplifiers with dedicated PHONO inputs or line-level inputs.

Important Technical Specifications:

Model: US-1 Professional Belt Drive Turntable
Dimensions: 450(W) x 350(D) x 145(H) mm
Weight: 4.4 Kgs
Power Supply: Dual Voltage: AC 115V~60Hz/230V~50Hz, User Selectable
Power Consumption: 8W
Motor: DC motor
Driving Method: Belt drive
Turntable Platter: 330mm dia. Aluminum
Speeds: 33 1/3 and 45 rpm
Wow and Flutter: Less than 0.25% WRMS (JIS WTD) with 33 1/3 rpm
S/N Ratio: More than 50dB (DIN-B)
Pitch Controls: +/- 10%
Starting Time: Less than 1 sec with 33 1/3
Braking Time: Less than 1 sec. with 33 1/3
Time for Speed Change: Less than 1 sec. from 33 1/3 to 45 rpm; Less than 1 sec. from 45 to 33 1/3 rpm
Speed Tolerance at Pitch=0: Within +/-1.3%
Tonearm Type: Static balanced S-shaped tonearm with detachable headshell
Effective Arm Length: 220 mm
Tracking Error Angle: Less than 3 degrees
Applicable Cartridge Weight: 6~10g
Anti-skating Range: 0-4g
Phono Output Level: 1.5~3.6 mV at 1KHz 5cm/sec (HP-4005)
Line Output Level: 90~216mV at 1KHz 5cm/sec (HP-4005)
Frequency Response: 20Hz-20KHz
Channel Separation: More than 15dB
Channel Balance: Within 2.5dB at 1KHz
Needle Pressure Range: 3~4g
High of Cue (first track): 6~10.5mm
Descend of Cue: 1~3sec
EQ AMP Output: 150mV +/-4dB (IN: 2.5 mV 1KHz)
RIAA: 20Hz~20KHz +1/-3dB (IN: 1.5 mV 1KHz)

Usage Features:

Voltage Selection: The turntable is factory-set for the voltage of the country it is sold in, but it can be adjusted for different voltages (110V-120V or 220V-240V) using a switch located under the platter.
Assembly: The unit requires some assembly, including placing the platter, slipmat, and installing the cartridge onto the headshell. The rubber belt must be attached to the motor for proper operation.
Cartridge Installation: Lead wires from the tonearm are connected to the cartridge terminals, which are typically color-coded (White for L+, Blue for L-, Red for R+, Green for R-). The cartridge is then secured to the headshell.
Tonearm Adjustment: The tonearm requires careful adjustment for horizontal "zero" balance and stylus pressure. This involves rotating the counterweight until the tonearm floats freely, then setting the stylus-pressure ring to "0" and finally rotating the counterweight to the desired stylus pressure (typically 3g).
Anti-skating: An anti-skating control knob applies an inward force to the tonearm to counteract the centrifugal force that can cause outward skipping. The anti-skate value should match the stylus pressure.
Connections: The turntable connects to an AC outlet for power. RCA cables connect the turntable to an amplifier's PHONO input. Alternatively, if the amplifier lacks a PHONO input, the PHONO/LINE selector switch at the rear of the turntable can be set to "LINE" to use a standard line-level input.
Operation:
- Power On/Off: A rotary switch turns the unit on (clockwise) and off (counter-clockwise).
- Speed Selection: Buttons for 33-RPM and 45-RPM allow selection of the playback speed, with an LED indicating the active speed.
- Start/Stop: An oversized push button controls platter motion. Pressing it once starts the platter, and pressing it again stops it.
- Cueing Lever: This lever safely raises and lowers the tonearm, preventing damage to the record or stylus.
- Pitch Control: A slider allows adjustment of the playback pitch (platter speed) by +/- 10%.
- Strobe Indicators: Four rows of indicators on the platter, illuminated by a pilot lamp, help visually monitor the pitch and speed accuracy.
45-rpm Adaptor: An adaptor is provided for playing 7" EP vinyl records with large center holes.
Dust Cover: A dust cover can be installed on hinges to protect the unit.
Suspend Play: During playback, raising the cueing lever will lift the stylus from the record, pausing play.
Placement: The unit should be placed on a stable, vibration-free surface, away from direct sunlight, heating appliances, high humidity, or excessive dust. The adjustable legs help stabilize the unit horizontally.

Maintenance Features:

Stylus Cleaning: The stylus should be cleaned periodically with a soft brush to remove dust accumulation.
Stylus Replacement: If the sound becomes distorted or noisy, the stylus should be checked for wear and replaced if necessary.
Cabinet and Dust Cover Cleaning: The dust cover and turntable cabinet should be wiped down with a soft, dry cloth. Volatile materials like alcohol, thinner, or benzine should not be used as they can damage the paint or luster.
Service: The user should not attempt any service beyond what is described in the manual. All other servicing should be referred to qualified service personnel.
Power Cord: The power cord should be unplugged during long periods of non-use or during lightning storms to prevent damage.
Replacement Parts: When replacement parts are needed, only those specified by the manufacturer or parts with identical characteristics should be used to avoid hazards.