Operating Instructions
for the
ST III Range
of
SUB-BASS SYSTEMS
REL Acoustics Limited
North Road, Bridgend industrial Estate Bridgend, CF31 3TP
United Kingdom
Telephone: +44 (0)1 656 768 777
Fax: +44 (0) 1 656 766 093
Web: www.REL.net
REL Acoustics ‘ST III’ User Manual
First Printed March 4th 2003
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REL Acoustics ‘ST III’ User Manual |
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Contents |
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CONTENTS ..................................................................................................................................... |
3 |
IMPORTANT SAFEGUARDS ........................................................................................................ |
4 |
WARNING ....................................................................................................................................... |
4 |
WELCOME...................................................................................................................................... |
5 |
WORLD WIDE WARRANTY ........................................................................................................ |
5 |
SERVICE AFTER WARRANTY................................................................................................... |
5 |
DESIGN SAFETY............................................................................................................................ |
6 |
IMPORTANT ................................................................................................................................ |
6 |
MAIN FEATURES OF REL STRATA III, STORM III, STADIUM III, STENTOR III AND |
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STUDIO III SUBBASS SYSTEMS................................................................................................ |
7 |
CONTROL PANEL ......................................................................................................................... |
8 |
CONTROLS AND CONNECTIONS............................................................................................... |
9 |
CONTROLS AND CONNECTIONS (CONT) ............................................................................... |
10 |
CONTROLS AND CONNECTIONS (CONT) ............................................................................... |
11 |
CONNECTING UP ........................................................................................................................ |
12 |
TO CONNECT TO THE POWER AMPLIFIER USING THE UNBALANCED NEUTRIK HIGH LEVEL INPUT... |
12 |
TO CONNECT TO MONO BLOCK POWER AMPLIFIERS USING THE HIGH LEVEL NEUTRIK |
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UNBALANCED INPUT................................................................................................................. |
13 |
TO CONNECT TO DIFFERENTIAL (BALANCED OUTPUT) POWER AMPLIFIERS USING THE BALANCED |
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HIGH LEVEL INPUT ......................................................................................................................... |
14 |
TO CONNECT TO THE AMPLIFIER/PROCESSOR USING THE PHONO TO PHONO LOW LEVEL INTERCONNECT |
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15 |
ALTERNATIVE METHOD FOR CONNECTING AT LOW LEVEL FROM PRE AMPLIFIER .............................. |
16 |
TO CONNECT TO A PRE AMPLIFIER WITH LOW LEVEL DIFFERENTIAL (BALANCED) OUTPUTS ............... |
17 |
REL SET-UP MADE SIMPLE ...................................................................................................... |
18 |
REL SET-UP MADE SIMPLER ................................................................................................... |
21 |
RUNNING IN ................................................................................................................................. |
22 |
OVERLOAD PROTECTION........................................................................................................ |
22 |
CARE AND POLISHING .............................................................................................................. |
22 |
TECHNICAL ................................................................................................................................. |
23 |
POWER SAVING EFFICIENCY.................................................................................................. |
24 |
TECHNICAL SPECIFICATIONS STRATA III, STORM III AND STADIUM III .................... |
25 |
TECHNICAL SPECIFICATIONS STENTOR III AND STUDIO III.......................................... |
26 |
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REL Acoustics ‘ST III’ User Manual
IMPORTANT SAFEGUARDS
1.Read all of these instructions.
2.Save these instructions for future use.
3.Unplug from the wall socket before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.
4.Do not use near water.
5.Do not place on a stand or table it may fall causing injury to a child or adult, and damage to the unit.
6.The unit should only be operated from the power source indicated on the panel of the amplifier.
7.Only use the power cord supplied.
8.Do not allow anything to rest on the power cord. Position the power cord such that it can not be walked on.
9.For added protection during a lightening storm, or when not in use for long periods of time, unplug it from the wall socket.
10.Never spill any kind of liquid on the unit.
11.Do not attempt to service the unit yourself, as removing the amplifier may expose you to dangerous voltages. Refer all servicing to your dealer.
12.Unplug the unit from the wall socket and refer servicing to your dealer under the following conditions:
a.When the power cord or plug is damaged.
b.If liquid has been spilled onto the unit.
c.If the unit does not operate properly by following the operating instructions.
d.If the unit has been dropped and damaged.
e.When the unit exhibits a drastic change in performance.
WARNING
This item is heavy. To avoid risk of injury, take care when handling.
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REL Acoustics ‘ST III’ User Manual
WELCOME
Thank you for buying a REL “ST” range Sub-Bass system. Our “ST” range is carefully hand built using the finest materials available and is designed for maximum performance. This manual contains important safety information as well as helpful advice and should be carefully studied before connecting up.
WORLD WIDE WARRANTY
In addition to any local Warranty, REL offer a 3-year conditional Worldwide Warranty to the end user. It is done in collaboration with our Distributors.
The conditions of this Warranty are:
1.That REL receive the necessary registration details from the end user.
2.That these details are received within six weeks of purchase.
3.That the product is not exported from the country of purchase for at least eight weeks after purchase.
4.That any claim is accompanied by the necessary proof of purchase.
5.That it shall be for a term of 3 years from the date of purchase.
6.That the product has not been abused or modified in any way.
7.That it was purchased originally from a REL authorised dealer.
This Warranty is offered in good faith and is in addition to any statuary rights or existing Warranty that may be available to the end user.
Should your REL Sub Bass Unit give you a problem, please contact your dealer who will be able to make whatever arrangements are necessary to correct it.
SERVICE AFTER WARRANTY
Please contact your dealer in the first instance before returning any product directly to us. Should the unit need to be returned for any reason, all carriage costs will be payable by the customer. Losses or damage caused during transit are the customer's risk.
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REL Acoustics ‘ST III’ User Manual
DESIGN SAFETY
This apparatus is designed to Class II specification and is double insulated, therefore it does not require to be earthed.
This apparatus is supplied with a fitted mains plug. For UK operation a 5 Amp fuse is fitted in the plug. Should the fuse need to be replaced use a similar rated fuse approved to ASTA or BSI 362. Do not use without the fuse cover in place. Replacement fuse covers are available from your dealer.
If for any reason the plug is cut off it must NOT be re used. Please dispose of any such plug safely. There is a danger of electric shock if the cut-off plug is inserted into a mains socket.
IMPORTANT
The wires in the mains lead are coloured in accordance with the following code:
Green and Yellow |
- |
Earth |
Blue |
- |
Neutral |
Brown |
- |
Live |
As the colours of the wires in the mains lead may not correspond with the markings identifying the terminals in the replacement mains plug, proceed as follows:
-The wire coloured Green and Yellow must be connected to the terminal marked with the letter "E" or with the earth symbol 
-The wire coloured Blue must be connected to the terminal marked with the letter "N"
-The wire coloured Brown must be connected to the terminal marked with the letter “L"
This product is CE marked and has been tested to ensure it satisfies all relevant standards.
It satisfies all relevant standards for Conducted Emissions, Radiated Emissions, Susceptibility and Immunity.
It also complies with the requirements relating to class II construction detailed in clauses 9 & 10 of BS EN 60065 1994
It also satisfies all relevant safety tests for consumer use provided it is used within the guidelines of this manual.
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REL Acoustics ‘ST III’ User Manual
Main Features of REL Strata III, Storm III, Stadium III, Stentor III and Studio III SUBBASS SYSTEMS
1.Separate volume controls for both high and low level inputs
2.Critically correct semitone resolution of the filter controls
3.Balanced and unbalanced inputs via high quality sockets
4.Mode switch to control phase and low level filter bypass
5.All components of matching superior quality to achieve both long-life and long-term consistency of sound quality.
6.All cabinets made from 30 mm thick MDF.
7.Superior wood veneered finishes available for all models.
8.Set-Safe® circuitry ensuring ultimate protection if overloaded.
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REL Acoustics ‘ST III’ User Manual
Control Panel
The layout of the panel is intended to ensure total ease of use. You can use any input in combination with any other. This means that both low and high level inputs can be used concurrently. Individual volume controls for the high and low level inputs ensure precise individual adjustment for both two channel (stereo) signals and multi-channel (surround sound) signals.
The mode switch allows both the phase and the filter bypass to be incorporated into one control. The Line positions route the low level signals through the ABC filter circuits. In the LFE (Low Frequency Effects) positions the low level signals bypass this filter. This is to ensure compatibility with multi-channel Home Theatre surround sound systems where the bass frequency range is controlled within the software by the decoder circuitry. The high level inputs are always routed through the ABC.
The phase can be reversed by 180 degrees by means of this same switch to preserve the relative phase between your main system and the REL. This acts at both High Level and Line Level. See table below.
MODE SELECTOR
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SOURCE |
PHASE |
1 |
LINE |
0 |
2 |
LFE |
0 |
3 |
LINE |
180 DEG |
4 |
LFE |
180 DEG |
The two filter controls are to allow coarse and fine control of the filter settings. The coarse control marked A through D changes the turnover frequency by approximately half an octave per division. The fine control marked 1 through 6 offers a resolution of approximately one semitone per division.
The frequencies offered by these two controls are shown in the table below:
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ROLLOFF FREQUENCY |
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HERTZ |
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1 |
2 |
3 |
4 |
5 |
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6 |
A |
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22 |
23 |
25 |
27 |
28 |
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30 |
B |
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32 |
34 |
36 |
38 |
41 |
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43 |
C |
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46 |
49 |
53 |
56 |
60 |
|
64 |
D |
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69 |
73 |
78 |
83 |
89 |
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95 |
These frequencies are within 1% tolerance and are repeatable between all ST range models.
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REL Acoustics ‘ST III’ User Manual
CONTROLS AND CONNECTIONS
See page 11 for explanation
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Storm III |
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Storm III panel shown, Strata III is the same with the exception of the Bal Lo Level input, not on Strata III only Storm III
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