LEM Hurricane H300A User Manual

1
Index
Soldering point.
Male connector.
Female connector.
M/F faston connector.
Test point.
Supply voltage. Logic supply ground.
Analog supply ground.
Chassis ground.
Earth ground.
Flag joined with one or more flags
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Phone +39(0)541/959511 - Fax +39(0)541/957404 - Internet: www.generalmusic.com
Technical data2
Passive versions3
Checking & adjustement
9
10 H350A schematics
11
H300A, H300MA schematics
12 Spare part list
H350SA, H400SA schematics
4
H100MA, H150A, H200A, H200MA schematics8
with the same signal name inscribed.
ATTENTION Observe precautions when handling electrostatic sensitive devices.
Notice
Service must be carried out by qualified personnel only. Any tampering carried out by unqualified personnel during the guarantee period
will forfeit the right to guarantee.
For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again.
To improve the device's specifications, the schematic diagrams may be subject to change without prior notice.
All components marked by this symbol have special safety characteristics, when replacing any of these components use only
manufacturer's specified parts.
The (μ) micro symbol of capacitance value is substituted by U.
The (
Ω) omega symbol of resistance value is substituted by E.
The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified.
All resistors are 1/8W unless otherwise specified.
All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.
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service manual
schematic diagrams
CODE: 270306 version 1.02
Powered & passive loudspeaker systems
hurricane

LEM Hurricane H300A Specifications

General

Type	Passive Speaker
Configuration	2-Way
Power Capacity (RMS)	300W
Power Handling (Peak)	600W
Impedance	8 Ohms
Frequency Response	50Hz - 20kHz
Tweeter Size	1 inch
Enclosure Type	Bass Reflex
Sensitivity	96dB
Woofer Size	12 inches

Summary

General Safety and Handling Notice

Service and Component Safety Guidelines

Emphasizes qualified personnel, component safety, and replacement guidelines.

Electrostatic Discharge (ESD) Precautions

Technical Data Specifications

H100MA Checking and Adjustments

H100MA Specifications, Setup, and Supply Checks

Specs, setup procedures, and supply voltage verification for H100MA.

H100MA Channel, Limiter, Bias, and Bandwidth Tests

Procedures for channel tests, limiter, bias, and bandwidth adjustments.

H100MA Offset and Signal-to-Noise Checks

Procedures for offset sensor and signal-to-noise ratio checks.

H150A, H200A, H200MA Checking and Adjustments

H150A/H200A/H200MA Specs, Setup, and Supply Checks

Technical specs, setup, and supply voltage verification for these models.

H150A/H200A/H200MA Channel Tests and Adjustments

Procedures for channel tests, limiter, bias, and bandwidth adjustments.

H300A and H300MA Checking and Adjustments

H300A/H300MA Specs, Setup, and Supply Checks

Technical specs, setup, and supply voltage verification for these models.

H300A/H300MA Frequency Channel and Load Checks

H300A/H300MA Bias, Bandwidth, and Offset Checks

H350A Checking and Adjustments

H350A Specs, Setup, and Supply Checks

H350A Frequency Channel and Load Checks

H350A Bias, Bandwidth, and Offset Checks

H350SA and H400SA Checking and Adjustments

H350SA/H400SA Specs, Setup, and Supply Checks

H350SA/H400SA Initial, High Rail, and Bias Checks

H350SA/H400SA Bandwidth and Offset Checks

Spare Part List Overview

Spare Part List Details and Notes