Roksan Audio M series --1 User manual

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ROKSAN AUDIO LIMITED
6 NORTHFIELD INDUSTRIAL ESTATE
BERESFORD AVENUE ALPERTON
MIDDLESEX HA0 1NW ENGLAND
TEL. [phone]
[phone]
FAX. [phone]
Caspian
Dual Mono Preamplifier
USER MANUAL
M
M
s
se er ri ie es s - -1
1

Roksan Audio ltd Caspian Preamplifier User Manual
CLASSIFICATION: General Use Version 2.03
All specifications are liable to change without notice. E&OE Page 2 ENGLISH
Congratulations on your purchase of the ROKSAN Caspian Mseries-1 Preamplifier. This preamplifier is designed
and manufactured to the highest specification and rigorously tested to offer you many years of trouble-free
pleasure.
Your Caspian 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
U
UN NP PA AC CK KI IN NG G
Included in the packing of your Caspian preamplifier you will find:
•One mains lead fitted with the correct mains power plug for your country
•One Caspian system remote handset and batteries
•One information pack and warranty card
After removing these items please retain all packing materials. Correct packing is necessary for transportation of
your Caspian preamplifier.
M
MA AI IN NT TE EN NA AN NC CE E
After disconnecting the preamplifier from the mains supply, the cabinet and front panel may be cleaned with a
lightly dampened soft cloth or chamois leather. Avoid using abrasives or solvents.
E
EU U D DI IR RE EC CT TI IV VE ES S
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.
This product must be earthed. Please ensure that other equipment connected to it is earthed according to the
manufacturer’s instructions.
INTRODUCTION Caspian Preamplifier

Roksan Audio ltd Caspian Preamplifier User Manual
CLASSIFICATION: General Use Version 2.03
All specifications are liable to change without notice. E&OE Page 3 ENGLISH
A
AC C M MA AI IN NS S S SU UP PP PL LY Y
Your Caspian 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.
Please observe correct mains polarity at all times.
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.
G
GE EN NE ER RA AL L C CA AU UT TI IO ON NS S
F
FC CC C W WA AR RN NI IN NG G
This equipment may generate or use Radio Frequency energy. The user may lose the right to operate this
equipment if unauthorised modifications are made.
I
IN NT TE ER RF FE ER RE EN NC CE E
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
L
LO OC CA AT TI IO ON N
Your Caspian 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. Do Not remove any panels or attempt to service it yourself.
Unauthorised servicing will void the warranty.
CAUTIONS Caspian Preamplifier

Roksan Audio ltd Caspian Preamplifier User Manual
CLASSIFICATION: General Use Version 2.03
All specifications are liable to change without notice. E&OE Page 4 ENGLISH
R
RO OK KS SA AN N C Ca as sp pi ia an n P Pr re ea am mp pl li if fi ie er r- - F Fr ro on nt t P Pa an ne el l V Vi ie ew w
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 Indicator
10. Tape Monitor Button
11. Volume Control
R
RO OK KS SA AN N C Ca as sp pi ia an n P Pr re ea am mp pl li if fi ie er r - - R Re ea ar r P Pa an ne el l V Vi ie ew w
1. CD Input
2. Tuner Input
3. Video Input
4. Line 1 Input
5. Line 2 Input
6. Tape Input (Playback)
7. Tape Output (Record)
8. Preamp Output 1
9. Preamp Output 2 (Bi-Amping)
10. Preamp Output 3 (Tri-Amping)
11. AC Mains Input
12. Voltage & Fuse Label
13. AC Mains Fuseholder
14. AC Mains Power Switch
INSTALLATION Caspian Preamplifier
1 2 3 4 5 6 7 8 9 10
12
11 13 14
ROKSAN
Caspian Dual Mono Pre Amplifier
MODE
MODE CD TUNER VIDEO LINE 1 LINE 2 TAPE
INPUT
V
OLUME
2 3 4 5
6 7 8 9 10
1 11
TAPE
Mseries-1

Roksan Audio ltd Caspian Preamplifier User Manual
CLASSIFICATION: General Use Version 2.03
All specifications are liable to change without notice. E&OE Page 5 ENGLISH
C
CO ON NN NE EC CT TI IN NG G M MA AI IN NS S P PO OW WE ER R
Please refer to rear panel view on Page 4. The moulded IEC connector of the supplied mains lead should be
plugged into the socket (11) on the rear of the unit first and then plugged into the mains supply. The Mains power
switch (14) is on the rear panel of the preamplifier. This switch is normally left on. If the unit is likely to be
unattended for a long period, switch it off and unplug the mains lead from the wall.
S
SI IG GN NA AL L C CO ON NN NE EC CT TI IO ON NS S
Signal Input connections:
There are five Inputs (1 – 5) on your Caspian preamplifier in addition to the Tape Input
(6).All these inputs are line level inputs and will accept virtually all currently available source components.
All the inputs use RCA Phono Connectors and should be connected according to the standard convention –
Right Channel – Red; Left Channel – White or Black.
Also in accordance with standard practice, the Upper row of Phono Sockets carries the Left Channel and the
Lower carries the Right Channel.
The Input Sockets are labelled with their legends upside down as well as the normal way round to assist you
should you be connecting an input from a position in front of and above the amplifier.
Phono Input Connections:
Your Caspian preamplifier has line level inputs and you cannot connect a phono
cartridge directly to it. ROKSAN Caspian 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.
S
SW WI IT TC CH HI IN NG G O ON N
The Mains power switch (14) is located on the rear panel of the preamplifier. This switch should be left ON for
normal operation. If unattended for a long period, the Mains power should be switched OFF and the lead
disconnected from the power supply.
When switched ON from the rear panel your Caspian 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.
You can activate your Caspian preamplifier in two ways:
1 Press the MODE button (2) once.
2 Rotate the INPUT selector (1) in either direction by one step.
NOTE: The remote handset will activate the amplifier in the same manner.
The preamplifier will ‘wake up’ and the MODE indicator light (3) will glow RED. It will automatically select the CD
input and the CD input indicator light (4) will glow.
SETUP Caspian Preamplifier
OPERATION Caspian Preamplifier

Roksan Audio ltd Caspian Preamplifier User Manual
CLASSIFICATION: General Use Version 2.03
All specifications are liable to change without notice. E&OE Page 6 ENGLISH
U
US SI IN NG G T TH HE E C CO ON NT TR RO OL LS S
MODE CONTROL
The MODE button has the following functions:
•It activates the preamplifier from Standby.
•Pressing the MODE button once with the preamplifier activated will mute the volume level by 20dB. The
MODE indicator light will glow ORANGE. The amplifier remains fully functional in this mode. Another single press
unmutes the preamplifier and the MODE indicator light will revert to RED.
•With the preamplifier activated, a sustained press on the MODE button, reverts it into Standby with all the
input indicator lights extinguished and the MODE indicator light GREEN.
NOTE: When you bring the Caspian 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 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 Caspian thus enabling you to record.
The Tape Monitor is an override. Pressing the TAPE Button (10) connects the output of your tape deck to the
Caspian, 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.

Roksan Audio ltd Caspian Preamplifier User Manual
CLASSIFICATION: General Use Version 2.03
All specifications are liable to change without notice. E&OE Page 7 ENGLISH
R
RE EM MO OT TE E H HA AN ND DS SE ET T
The Caspian System Remote Handset uses two AAA size 1.5V batteries. These are housed in the battery
compartment on the underside of the handset.
Carefully remove the battery compartment cover 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 Caspian preamplifier are replicated on the remote handset.
The MODE Button (1) puts the amplifier in and out of Standby and can also be used to mute the output level by
20dB (sustained press on MODE Button).
The TAPE Button (2) connects the Tape Deck (In &Out).
The INPUT Buttons (3 &4) cycle through the input sources (Back &Forward).
The VOLUME Buttons (5 & 6) adjust the output volume level (Down &Up).
1 MODE
2 TAPE
3 INPUT (BACK)
4 INPUT (FORWARD)
5 VOLUME (DOWN)
6 VOLUME (UP)
6
5
2
5
3
1
MODEL 3
6
5
2
4
3
1
MODEL 2

Roksan Audio ltd Caspian Preamplifier User Manual
CLASSIFICATION: General Use Version 2.03
All specifications are liable to change without notice. E&OE Page 8 ENGLISH
If you suspect that your ROKSAN Caspian preamplifier is not operating properly, you should check all the
connections carefully. Phono plugs should be fully inserted- a frequent cause of problems is that Phono plug
surrounds 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
Amplifier in stand-by mode (MODE light
GREEN)
Missing or bad input signal connection
Wrong input selected
Tape Monitor selected
Amplifier set in MUTE position
Press MODE button to set amplifier in
operational mode (MODE light RED)
Check all input connections
Select correct input, ascertain source is
working
Deselect Tape Monitor
Deselect MUTE (check volume setting
first)
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 Caspian preamplifier. If a fault should develop, refer any
servicing to your appointed ROKSAN dealer, distributor or approved service agent.
Your ROKSAN Caspian 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.
TROUBLESHOOTING Caspian Preamplifier
GUARANTEE Caspian Preamplifier

Roksan Audio ltd Caspian Preamplifier User Manual
CLASSIFICATION: General Use Version 2.03
All specifications are liable to change without notice. E&OE Page 9 ENGLISH
Line Inputs 5 plus Tape
Input Impedance 47 kΩ
Line Outputs Tape, Preamplifier (x3)
Power Supply 350VA Ultra Low Noise Toroidal Transformer
10 Regulated Supply Rails
Frequency response -3dB, <0.5Hz – 110kHz
Gain 9.3dB Preamplifier
Harmonic Distortion <0.0015% 1kHz, <0.009% 20kHz
Signal to Noise Ratio Line 108dBa (ref. 500mV)
Power Source 100V – 120V 50Hz / 60Hz
220V – 240V 50Hz / 60Hz
(via Mains inlet filter)
Power Consumption < 230 W
Dimension 432 x 330 x 70 (W x D x H) mm
432 x 330 x 80 (including feet)
Weight 12 Kg
Caspian Dual Mono Preamplifier M series-1 Serial Number: …………………………
Purchase Date Year .……… Month …….. Day ……..
ROKSAN Retailer Name: …………………………………
Location: ………………………………
Please keep a record for future reference
SPECIFICATIONS Caspian Preamplifier
NOTES Caspian Preamplifier