Roksan Audio PR15B User manual

Roksan Audio
Brand
Roksan Audio
Model
PR15B
Category
Audio amplifiers
Type
User manual
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ROKSAN AUDIO LIMITED
6 NORTHFIELD INDUSTRIAL ESTATE
BERESFORD AVENUE ALPERTON
MIDDLESEX HA0 1NW ENGLAND
TEL. +44 (0)208 900 6801
+44 (0)208 900 6802
FAX. +44 (0)208 900 0734
PR15B
Dual Mono Precision Preamplifier
USER MANUAL
Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 2 ENGLISH
Congratulations on your purchase of the ROKSAN Platinum PR15B Preamplifier. This preamplifier is
designed and manufactured to the highest specification and rigorously tested to offer you unsurpassed
performance for many years of trouble-free pleasure.
Your Platinum preamplifier is at the heart of your hi-fi system. Correct installation, set-up and operation of
this preamplifier and its partnering equipment will have a profound influence on the sonic performance of the
entire system.
Please read the contents of this manual thoroughly. It will help you to understand your hi-fi equipment better and
enhance your listening pleasure.
This manual is divided into the following sections:
• Safety Instructions (accompanying card)
• Introduction
• Cautions
• Installation
• Setup
• Operation
• Troubleshooting
• Guarantee
• Specifications
• Notes
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Included in the packing of your Platinum preamplifier you will find:
• One mains lead fitted with the correct mains power plug for your country
• One
Platinum system remote handset and batteries (x2 AAA size & 2mm A/F Allen Key)
• One information pack and warranty card
After removing these items please retain all packing materials. Correct packing is necessary for transportation of
your preamplifier.
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After disconnecting the preamplifier from the mains supply, the cabinet and front panel may be cleaned with a
lightly dampened soft cloth. A
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This product is designed to comply with the legal provisions of EU Directives 89/3336/EC and 72/23/EC. The
standards which have been applied are those which were in force at the time of the introduction of this product.
This product bears the CE mark.
This product is compliant to EN 60065.
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. Please ensure that other equipment connected to it is earthed according to the
manufacturer’s instructions.
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Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 3 ENGLISH
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Your Platinum preamplifier is set to operate from a fixed supply voltage which is marked on a label next to
the mains input plug. Before connecting the mains lead please check that your mains supply corresponds to this
label as below:
230V Products Voltage Range: 220V – 240V
115V Products Voltage Range: 100V – 120V
100V Products Voltage Range: 90V – 110V
The mains lead supplied with this product has an IEC mains socket which plugs into the IEC connector on the
unit’s rear panel. The other end is normally attached to the appropriate mains plug for your country. In the UK
this is the standard UK13A plug.
This plug should ordinarily not be removed from the lead. If you do remove it, please dispose of it safely so that it
cannot be plugged into a mains socket whilst in a potentially dangerous condition. We suggest that you obtain
from your dealer a complete replacement lead.
Should you move to another area where either the mains voltage or the mains plugs are different from those as
supplied with your preamplifier, please contact the appointed ROKSAN distributor for assistance.
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The preamplifier mains fuses are located on the rear panel next to the IEC mains connector. These must only be
replaced by the fuse type and rating as described on the fuse rating label on the rear panel of the unit.
If the equipment is likely to be unused for some time, unplug it from the mains supply.
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This equipment may generate or use Radio Frequency energy. The user may lose the right to operate this
equipment if unauthorised modifications are made.
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Properly installed, this unit should not cause harmful interference to radio communications, There is, however, no
guarantee that such interference will not occur in a specific installation. If interference arises (which you can
determine by switching the unit off and on) you could try to remedy this problem by the following:
• Re-orient or re-locate the receiving antenna
• Increase the distance between the preamplifier and receiver
• Connect the unit to a different mains circuit from that of the receiver
• Consult your ROKSAN appointed dealer or an experienced Radio/TV technician for help and advice
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Your Platinum preamplifier should be located in a well ventilated area and kept away from sources of heat,
dust, humidity and direct sunlight.
The preamplifier may be positioned either as a free standing unit or alongside another audio/video product.
Never place the preamplifier on carpet or any surface likely to hinder normal ventilation.
Never allow liquids or other objects to fall into the unit.
This unit contains no user serviceable parts.
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Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 4 ENGLISH
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1 Input Selector
2 Mode Button
3 Mode Indicator
4 CD Input Indicator
5 Tuner Input Indicator
6 Video Input Indicator
7 Line 1 Input Indicator
8 Line 2 Input Indicator
9 Tape Monitor/Input Indicator
10 Tape Monitor/Input Button
11 Volume Control
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1 CD RCA Input
1A CD
Balanced XLR Input
2 CD Input RCA/MUTE/XLR Switch
3 Tuner Input
4 Video Input
5 Video/Line 1 Input Bypass Switch
6 Line 1 RCA Input
6A Line 1
Balanced XLR Input
7 Line 1 Input RCA/MUTE/XLR Switch
8 Line 2 Input
9 Tape Input (Record)
10 Tape Output (Playback)
11 Preamp
RCA Output 1
11A Preamp Balanced XLR Output 1
12 Preamp
RCA Output 2
12A Preamp Balanced XLR Output 2
13 AC Mains IEC Inlet
14 Voltage & Fuse Label
15 AC Mains Fuseholder
16 AC Mains Power Switch
2 3 4 5
6 7 8 9 10
1 11
1A
1 3 4 6 8 9 10 11 12
6A 11A 12A 2 7 5 13 16 15 14
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Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 5 ENGLISH
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Please refer to rear panel view on Page 4. The moulded IEC connector of the supplied mains lead should be
plugged into the socket (13) on the rear of the unit first and then plugged into the mains supply. The Mains power
switch (16) is on the rear panel of the preamplifier. This switch is normally left on. I
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Choose a non-resonant, rigid shelf/structure to place your preamplifier on
(e.g. dedicated High quality equipment stand with adequate ventilation).
The Platinum preamplifier utilises specially designed decoupling feet which
reduce mechanical vibrations reaching the internals. This feature enhances
performance of the preamplifier. *** See opposite:
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Signal Input connections:
There are 5 Line Level Inputs on your Platinum preamplifier in addition to the Tape Monitor/Input (6).
All the inputs accept single-ended RCA Phono Connectors and should be connected according to the standard
convention Right Channel – Red ; Left Channel – White
CD & Line 1 Inputs also accommodate Balanced XLR connectors. These two inputs are provided with a selector
switch at the back and can be set to single-ended (RCA) or Balanced (XLR) or be Disconnected (Mute).
*** See below:
In addition either Video or Line 1 Inputs can be set as Bypass. In this mode the selected Input will not go through
the preamplifier’s gain/volume section, instead the signal is connected directly to the Preamplifier outputs. This is
particularly useful when integrating your Audio/Visual system with your main Hi-Fi system. In this mode the L & R
‘-outs’ from your surround sound processor
should be connected to either Video or Line 1
input of your Platinum preamplifier and
the BYPASS switch is set to that input. Now
whenever that input is selecte,d the signal
will just pass straight through to the Pre Outs
with volume controlled by the processor.
*** See opposite:
If you do not require such a combination,
then simply set the BYPASS switch to NORM.
In the figure shown, the Video Input is set
Bypass (BYPASS Switch set to VIDEO). And
the Line 1 Input is used in Balanced mode
(INPUT Switch set to XLR).
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RCA
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VIDEO
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XLR
Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 6 ENGLISH
Your Platinum preamplifier has four sets of Pre Outs; x2 RCA and x2 Balanced XLR.
*** See below:
All four outputs are always active and can be utilised in multi-amp configurations.
Phono Input Connections:
Your Platinum preamplifier has line level inputs and you cannot connect a phono
cartridge directly to it. ROKSAN Phono Amplifier range accept conventional moving coil and moving magnet
cartridges and has custom equalisation for the outstanding ROKSAN Shiraz MC cartridge. For a demonstration
of ROKSAN state of the art record players and phono amplifiers contact your authorised retailer.
IMPORTANT NOTE: For optimum performance it is recommended to use high quality inter-connect cables
such as ROKSAN HDC-02A high definition analogue Cable.
Please refer to the front and rear panel views on page 4.
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The Mains power switch (16) is on the rear panel of the preamplifier. This switch is normally left on. I
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When switched ON from the rear panel your Platinum preamplifier runs a self-test and the indicator lights on
the front panel pulse twice. The preamplifier then reverts to STANDBY and the MODE indicator light (3) will glow
GREEN. The amplifier is now ready for use.
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RCA
XLR
Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 7 ENGLISH
You can activate your Platinum preamplifier in two ways:
1 Press the MODE button (2) once.
2 Rotate the INPUT selector (1) in either direction.
NOTE: The remote handset will activate the amplifier by pressing the Power button ( ).
The preamplifier will ‘wake up’ and the MODE indicator light (3) and the Volume indicator will glow RED. It will
automatically select the CD input and the CD input indicator light (4) will also glow.
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MODE CONTROL
The MODE button toggles the preamplifier in and out of Standby.
NOTE: When you bring the preamplifier out of STANDBY having switched it ON at the Mains, the input selector
will default to CD (as described previously).
When, however, the preamplifier has been put into Standby from the MODE or the remote Power button ( ),
bringing it out of Standby will restore previously selected input, tape and mute values. Bringing the preamplifier
out of Standby by moving the INPUT Selector one step in either direction also leaves these amplifier settings
unaffected.
INPUT SELECTOR SWITCH
The INPUT Selector is an endless rotary switch that moves round one click at a time. It connects each signal
source to the amplifier by rotating through the Inputs with the exception of TAPE. Rotating the Selector
continuously clockwise will select inputs in this sequence:
CD – TUNER – VIDEO – LINE1 – LINE2 – CD - …
Rotating the Selector anti-clockwise reverses the sequence.
Whenever an input is selected the appropriate indicator light will glow.
VOLUME CONTROL
The VOLUME Control is a precision device. It follows a logarithmic law so that its response approximates that of
the human ear and provides more control (range) at lower levels. There is an illuminated indicator on the volume
control to clearly show the appropriate volume setting.
TAPE MONITOR
When you select an input source, the INPUT Selector connects the selected source to the preamplifier and also
connects this source to the Tape Output Sockets of the Preamplifier thus enabling you to record.
Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 8 ENGLISH
The Tape Monitor is an override. Pressing the TAPE Button (10) connects the output of your tape deck to the
Preamplifier, overriding the selected input. However, the selected input is left connected to the recording input of
your tape deck. If you have a suitable tape deck, this facility enables you to record a programme whilst
monitoring its playback.
When the TAPE Button is depressed, the TAPE Indicator light glows and the selected source Indicator remains
illuminated.
The input selector remains functional when the Tape Monitor is ON, allowing a range of sources to be recorded.
Pressing the TAPE Button toggles between Tape Monitor ON and OFF.
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The Platinum System Remote Handset uses two AAA size 1.5V batteries. These are housed in the battery
compartment on bottom end of the handset.
Carefully remove the battery compartment cover using the 2mm Allen Key supplied by unscrewing the M3
Counter-sunk Stainless Steel Screw as shown below. Gently pull out the Battery Holder and insert the supplied
batteries in place observing polarity. Replace the cover. The handset is now ready for use.
The front panel controls of the preamplifier are replicated on the remote handset. Inputs are accessed directly
except Tape Monitor, Mute and Power, were the buttons toggle between Tape In & out, Mute On & Off and
Preamp On & Standby respectively.
NOTE: In Multi Room or Installations where the front display is not seen, remote Power On & Standby can be
achieved by programming two ‘hidden’ codes that are already incorporated into the internal controller of the
preamplifier. These codes are as follows:
POWER ON: 99 66 20
POWER OFF: 99 66 21
Please note when using the preamplifier in such installations, Mute and Tape Monitor functions should not be
programmed in.
1 2
3
Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 9 ENGLISH
POWER Button ( ) puts the amplifier In and Out of Standby.
MUTE Button toggles between normal and lowered output level (-20dB).
TAPE Button toggles between Tape In & Out.
INPUT Buttons select the designated Input directly.
VOLUME Buttons
(±) adjust the output volume level (Up & Down).
NOTE: Mute function is particularly useful when you need the volume temporarily lowered; for example
when answering the phone.
When the preamplifier is set to Mute, the MODE indicator on the front panel display will change to Amber.
*** See below:
Direct Access Buttons
Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 10 ENGLISH
If you suspect that your ROKSAN Platinum preamplifier is not operating properly, you should check all the
connections carefully. Phono plugs and XLR connectors should be fully inserted- a frequent cause of problems is
that connectors do not make proper contact. Below are some commonly encountered problems with suggestions
for possible cure. The list is not exhaustive: If you have any unresolved problems, please consult your appointed
ROKSAN dealer or distributor.
SYMPTOM LIKELY CAUSE SUGGESTED REMEDY
No power AC Mains lead not inserted properly
Unit not switched on at rear panel
IEC mains inlet fuses blown
Ensure AC Mains lead is fully inserted
Switch unit on at rear panel
Replace with identical fuse type and
rating and try again (only once)
No output on one or both
channels
Very low sound output
No volume control on Video
or Line 1 input
Amplifier in stand-by mode (MODE light
GREEN)
Missing or bad input signal connection
Wrong input selected
Input switch incorrectly set
Tape Monitor selected
Amplifier set in MUTE position
Bypass switch incorrectly set
Press MODE button to set amplifier in
operational mode (MODE light RED)
Check all input connections
Select correct input, ascertain source is
working
Check & set Input switch (RCA or XLR)
Deselect Tape Monitor
Deselect MUTE (check volume setting
first)
Check & set Bypass switch (RCA or
XLR)
Hum from speakers Incorrect Grounding
Poor choice of interconnect cables
Check Mains polarity and grounding on
all connected equipment
Change the interconnect cables
There are no user-serviceable parts inside your Platinum preamplifier. If a fault should develop, refer any
servicing to your appointed ROKSAN dealer, distributor or approved service agent.
Your ROKSAN Platinum preamplifier is guaranteed against any defect in materials and workmanship for a
period of two years from the date of purchase.
This guarantee only becomes effective if the warranty card is validated by the ROKSAN retailer from whom the
equipment was purchased and returned to ROKSAN within 28 days of purchase.
This guarantee excludes:
1. Damage caused due to accident, missuse, neglect and incorrect installation, adjustment or repair.
2. Liability for damage or loss during transit from the retailer or purchaser to ROKSAN or its authorised
distributor for the purposes of repair or inspection.
Carriage costs to ROKSAN shall be borne by the consignor.
All claims under this guarantee must be made through an authorised ROKSAN retailer.
If equipment returned for repair to ROKSAN is found on inspection to comply with the product specification
ROKSAN reserves the right to make a charge for examination and return carriage.
Unauthorised servicing will void this guarantee.
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Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 11 ENGLISH
Line Inputs 5 RCA plus Tape
CD & LINE1 inputs switch-able to XLR Balanced
VIDEO & LINE1 inputs selectable for By-passed
Input Impedance 47 kΩ
Outputs Tape, Preamplifier (x2 RCA & x2 XLR Balanced)
Power Supply 350VA Ultra Low Noise Shielded Toroidal Transformer
12 Regulated Supply Rails
Frequency response -3dB, <0.5Hz – 110kHz
Gain 9.3dB Preamplifier
Harmonic Distortion <0.0015% 1kHz, <0.009% 20kHz, <0.015% 30kHz
Noise 20 – 20kHz A-weighted <-95dB
Noise 1kHz A-weighted <-105dB
UNWEIGHTED Hum & Noise 20 – 20kHz <-90dB
Power Source 100V – 120V 50Hz / 60Hz
220V – 240V 50Hz / 60Hz
(via Mains inlet filter)
Power Consumption < 40 W
Dimension 432 x 390 x 80 (W x D x H) mm
432 x 390 x 95 (including feet)
Weight 15 Kg
Platinum Dual Mono Precision Preamplifier
Purchase Date
ROKSAN Retailer
Please keep a record for future reference
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Roksan Audio ltd Platinum Preamplifier User Manual
CLASSIFICATION: General Use Version 1.03
All specifications are liable to change without notice. E&OE Page 12 ENGLISH
www.roksan.co.uk
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Roksan Audio PR15B User manual

Roksan Audio
Brand
Roksan Audio
Model
PR15B
Category
Audio amplifiers
Type
User manual
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