LEM Hurricane H350A - 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

Summary

Technical Data

H100 MA Checking & Adjustments

H100 MA Setup

H100 MA Supply Check

Verification of AC and DC supply voltages for the H100MA amplifier.

H100 MA Channel Check

Tests for voltage and current amplification of the H100MA channel.

H100 MA Limiter Check

Verification of the limiter function on the H100MA amplifier.

H100 MA Bias Adjustment

Procedure to adjust the bias for the H100MA amplifier.

H100 MA Offset Sensor Check

H100 MA Signal to Noise Ratio Check

H150 A H200 A H200 MA Checking & Adjustments

H150 A;H200 A;H200 MA Setup

H150 A;H200 A;H200 MA Supply Check

Verification of AC and DC supply voltages for H150A/H200A/H200MA.

H150 A;H200 A;H200 MA Channel Check

Tests for voltage and current amplification of H150A/H200A/H200MA channels.

H150 A;H200 A;H200 MA Limiter Check

Verification of the limiter function on H150A/H200A/H200MA.

H150 A;H200 A;H200 MA Bias Adjustment

Procedure to adjust the bias for H150A/H200A/H200MA.

H150 A;H200 A;H200 MA Offset Sensor Check

H150 A;H200 A;H200 MA Signal to Noise Ratio Check

H300 A H300 MA Checking & Adjustments

H300 A;H300 MA Setup

H300 A;H300 MA Supply Check

Verification of AC and DC supply voltages for H300A/H300MA.

H300 A;H300 MA Low Frequency Channel Check

Testing the low frequency channel of H300A/H300MA.

H300 A;H300 MA High Rail Voltage Amplification Test

Testing the high rail voltage amplification for H300A/H300MA.

H300 A;H300 MA Load Current Test

Testing the H300A/H300MA with a load.

H300 A;H300 MA Limiter Check

H300 A;H300 MA Bias Adjustment

H300 A;H300 MA Offset Sensor Check

H300 A;H300 MA Signal to Noise Ratio Check

H300 A;H300 MA High Frequency Channel Check

Testing the high frequency channel of H300A/H300MA.

H350 A Checking & Adjustments

H350 A Setup

H350 A Supply Check

Verification of AC and DC supply voltages for the H350A.

H350 A Low Frequency Channel Check

Testing the low frequency channel of the H350A.

H350 A High Rail Voltage Amplification Test

H350 A Load Current Test

H350 A Limiter Check

H350 A Bias Adjustment

H350 A Offset Sensor Check

H350 A Signal to Noise Ratio Check

H350 A High Frequency Channel Check

Testing the high frequency channel of the H350A.

H350 SA H400 SA Checking & Adjustments

H350 SA;H400 SA Setup

H350 SA;H400 SA Supply Check

Verification of AC and DC supply voltages for H350SA/H400SA.

H350 SA;H400 SA Load Current Test

H350 SA;H400 SA Sign;Comp Sensor Check

H350 SA;H400 SA Bias Adjustment

H350 SA;H400 SA Offset Sensor Check

H350 SA;H400 SA Signal to Noise Ratio Check

Spare Part List

LEM Hurricane H350A Specifications

General

Configuration	2-Way
Impedance	8 Ohms
Enclosure Type	Bass Reflex
Sensitivity	98dB
Connectors	SpeakON
LF Driver Size	15 inches