Drawmer SL22 Bruksanvisning
Läs gratis den bruksanvisning för Drawmer SL22 (12 sidor) i kategorin Processor. Guiden har ansetts hjälpsam av 20 personer och har ett genomsnittsbetyg på 4.3 stjärnor baserat på 10.5 recensioner. Har du en fråga om Drawmer SL22 eller vill du ställa frågor till andra användare av produkten? Ställ en fråga
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DRAWMER
SL22
Sound Level Limiter
CONTENTS
Warranty
Safety Consideration
Installation
Power Connection
Chapter 1 - Introduction
Introduction
Security Plate and Label
Tamper-proof Bracket
Audio Connections
Installation and Connection Guide - Stereo Pair
Installation and Connection Guide - Multiple Speakers
Chapter 2 - Control Description
Control Description
The Setup Procedure
Chapter 3 - General Information
If a fault develops
Contacting Drawmer
Specification
Block Diagram
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3
CHAPTER 1
(or before the active speakers), with the amplifier volume
set to maximum. If the SL22 were to be connected earlier
in the chain, prior to the pre-amp/mixer for example, then
it would be possible to add gain, sending noise levels
higher than required.
The SL22 can be used in a configuration where a stereo
output is distributed around several speakers. Fig.3 shows
a setup where the signal is distributed into six pairs using
a Drawmer DA6, whilst still providing speaker protection
for all twelve speakers. Again, note the position of the
SL22’s along the audio chain - they should all be
connected directly before the amplifier that is supplying
the speakers (or active speakers), with the amplifier
volume set to maximum.
INSTALLATION
The SL22 Sound Level Limiter is designed for standard
19" rack mounting and occupies 1U of rack space. Where
possible, avoid mounting the unit directly above power
amplifiers or power supplies that radiate significant
amounts of heat.
If the unit is to be used in a mobile situation, it is strongly
recommended that the rear of the unit is supported in the
carrying rack to avoid bending the front panel rack
mounting ‘ears’. Use fibre or plastic washers to prevent
the front panel becoming marked by the mounting bolts.
Always connect the mains earth to the unit.
Fig. 2 shows the ideal connection setup, providing the
greatest protection for your system. Note the position of
the SL22 along the audio chain - it should be connected
directly before the amplifier that is supplying the speakers,
POWER CONNECTION
The SL22 unit will be supplied with a power cable suitable for domestic power outlets in your country. For your own
safety, it is important that you use this cable to connect to the mains supply earth. The cable must not be tampered
with or modified.
The SL22 has an internal fuse to suit the mains voltage for which the unit has been supplied. The fuse should never
blow under normal operation. If the fuse is suspected of having blown, then a fault will have occurred and this fault
condition should be inspected by a qualified service engineer. When replacing the fuse, always comply with the
Safety Instructions.
If the unit is to be used with a mains input operating
voltage different to that for which the unit is supplied,
the following procedure must be carried out by a
technically competent person:
1: Disconnect the unit from the mains.
2: Using a number 1 size pozidrive screwdriver,
remove the seven self-tapping screws that retain
the top cover. Two screws are found along each
side, two at the rear along the top lip, and one
on the front panel, centre top.
3: With the cover removed slide the voltage
change-over switch (VS1) until the correct (or
nearest) mains input voltage is visible on the
switch actuator. The switch is located to the top
right of the main circuit board between the mains
I.E.C. and toroidal transformer.
For conversion to 115Volt AC
(previously set to 230Volt AC).....
4a: Exchange the 63mA fuse adjacent (FUSE1)
for a similar type rated at 125mA
For conversion to 230Volt AC
(previously set to 115Volt AC).....
4b: Exchange the 125mA fuse adjacent (FUSE1)
for a similar type rated at 63mA
In all cases:
5: Replace the top cover using the seven screws.
6: Re-connect to mains power source.
4
DRAWMER
SL22
SL22
SL22
SL22SL22
SOUND LEVEL LIMITER
Whether you need to protect your speakers, your hearing whilst listening to headphones or your premises license the
Drawmer SL22 Sound Level Limiter is the perfect tool for the job. By eliminating the possibility of ’unauthorised’
excessive sound pressure levels it offers strict level control and tremendous peace of mind to users in three distinct
areas:
INTRODUCTION
Limited speaker and headphone outputs.
Once installed and calibrated completely eliminates the possibility of ’unauthorised’ volume
levels
No sound quality loss even during protection processing
Large LED level indication for ’at a glance’ monitoring of signals and warnings
Time delay relays on outputs for clean power up/down
Fast, simple installation.
Tamper-proof plate limits access to settings.
A security label is supplied to further secure the calibration settings and show evidence of
tampering.
Tamper-Proof bracket (available separately) to lock-in the XLR’s and conform to Local Authority
regulations.
Reduces ’call-out’ costs of sound system service/repair engineers, sound system ’down time’
and the consequential loss of venue income, as well as the reputation of the venue.
External control of Dim and Mute for connection to Fire Alarms or remote operation
Trigger output when in PROTECT mode
Logging inputs for both ALERT and PROTECT statuses.
Benefiting from Drawmer’s 30 years involvement in designing industry standard dynamic processing devices, and
especially the experience gained from its sister product, the popular SP2120 Speaker Protector, the SL22 has
been designed to be more versatile and feature rich but at the same time just as easy to set up.
1
SAFEGUARD YOUR HEARING
Conform to Noise at Work
Regulations by controlling user’s
exposure to audio whilst at work
to help prevent hearing damage
3
PROTECT YOUR SPEAKERS
Prevents the damage to speaker
chassis drivers and amplifier elec-
tronics by catching unwanted signals
such as ‘bangs’ and ‘pops’
2
CONFORM TO REGULATIONS
By calibrating and controlling venue
noise levels and in a secure manner
you conform to Local Authority Noise
Regulations
Safeguard Your Hearing, Protect Your Speakers, and Conform to Regulations!
The SL22 front panel features an integral security plate to ensure that adjustments to maximum volume levels are
implemented by authorised personnel only. Once removed two front panel pre-sets are exposed and available for
adjustment by the installer. The first calibrates the protect indication to the incoming audio and dictates the point at
which ’protection’ processing commences. The second sets the absolute volume level to which the sound system is
The key features are as follows:
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Produktspecifikationer
| Varumärke: | Drawmer |
| Kategori: | Processor |
| Modell: | SL22 |
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