Roksan Audio Stereo Amplifier M series 1 User Guide

C a s p i a n  
Mseries -1  
Dual Mono Preamplifier  
U S E R M A N U A L  
R O K S A N A U D I O L I M I T E D  
6 NORTHFIELD INDUSTRIAL ESTATE  
BERESFORD AVENUE  
MIDDLESEX HA0 1NW  
ALPERTON  
ENGLAND  
T E L .  
F A X .  
+ 4 4 ( 0 ) 2 0 8 9 0 0 6 8 0 1  
+ 4 4 ( 0 ) 2 0 8 9 0 0 6 8 0 2  
+ 4 4 ( 0 ) 2 0 8 9 0 0 0 7 3 4  
w w w . r o k sa n . c o . u k  
e ma i l in f o @ r o k s a n . c o . u k  
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CAUTIONS  
C a s p i a n Preamplifier  
AC MAINS SUPPLY  
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.  
GENERAL CAUTIONS  
FCC WARNING  
This equipment may generate or use Radio Frequency energy. The user may lose the right to operate this  
equipment if unauthorised modifications are made.  
INTERFERENCE  
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  
LOCATION  
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.  
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  
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INSTALLATION  
C a s p i a n Preamplifier  
ROKSAN Caspian Preamplifier- Front Panel View  
1
2
3
4
5
6
7
8
9
10  
11  
MODE  
CD  
TUNER  
VIDEO  
LINE 1  
LINE 2  
TAPE  
MODE  
TAPE  
R O K S A N  
INPUT  
VOLUME  
Dual Mono Pre Amplifier  
C a s p i a n  
Mseries-1  
1.  
2.  
3.  
Input Selector  
Mode Button  
Mode Indicator  
4.  
CD Input Indicator  
5.  
6.  
7.  
8.  
9.  
10.  
11.  
Tuner Input Indicator  
Video Input Indicator  
Line 1 Input Indicator  
Line 2 Input Indicator  
Tape Monitor Indicator  
Tape Monitor Button  
Volume Control  
ROKSAN Caspian Preamplifier - Rear Panel View  
1
2
3
4
5
6
7
8
9 10  
1.  
2.  
3.  
4.  
5.  
CD Input  
13  
11 12  
14  
Tuner Input  
Video Input  
Line 1 Input  
Line 2 Input  
6.  
7.  
8.  
Tape Input (Playback)  
Tape Output (Record)  
Preamp Output 1  
9.  
Preamp Output 2 (Bi-Amping)  
Preamp Output 3 (Tri-Amping)  
AC Mains Input  
Voltage & Fuse Label  
AC Mains Fuseholder  
AC Mains Power Switch  
10.  
11.  
12.  
13.  
14.  
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  
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SETUP  
C a s p i a n Preamplifier  
CONNECTING MAINS POWER  
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.  
SIGNAL CONNECTIONS  
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.  
OPERATION  
C a s p i a n Preamplifier  
Please refer to the front and rear panel views on page 4.  
SWITCHING ON  
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
2
Press the MODE button (2) once.  
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.  
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
USING THE CONTROLS  
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 6  
ENGLISH  
Download from Www.Somanuals.com. All Manuals Search And Download.  
REMOTE HANDSET  
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.  
1
2
3
5
6
5
4
3
6
5
1 MODE  
2 TAPE  
3 INPUT (BACK)  
4 INPUT (FORWARD)  
5 VOLUME (DOWN)  
6 VOLUME (UP)  
2
1
MODEL 2  
MODEL 3  
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).  
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
TROUBLESHOOTING  
C a s p i a n Preamplifier  
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  
Amplifier in stand-by mode (MODE light Press MODE button to set amplifier in  
GREEN)  
operational mode (MODE light RED)  
Missing or bad input signal connection  
Wrong input selected  
Check all input connections  
Select correct input, ascertain source is  
working  
Tape Monitor selected  
Amplifier set in MUTE position  
Deselect Tape Monitor  
Very low sound output  
Hum from speakers  
Deselect MUTE (check volume setting  
first)  
Incorrect Grounding  
Check Mains polarity and grounding on  
all connected equipment  
Poor choice of interconnect cables  
Change the interconnect cables  
GUARANTEE  
C a s p i a n Preamplifier  
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.  
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SPECIFICATIONS  
C a s p i a n Preamplifier  
Line Inputs  
5 plus Tape  
47 k  
Input Impedance  
Line Outputs  
Power Supply  
Tape, Preamplifier (x3)  
350VA Ultra Low Noise Toroidal Transformer  
10 Regulated Supply Rails  
Frequency response  
Gain  
-3dB, <0.5Hz – 110kHz  
9.3dB Preamplifier  
Harmonic Distortion  
Signal to Noise Ratio  
Power Source  
<0.0015% 1kHz, <0.009% 20kHz  
Line 108dBa (ref. 500mV)  
100V – 120V 50Hz / 60Hz  
220V – 240V 50Hz / 60Hz  
(via Mains inlet filter)  
Power Consumption  
Dimension  
< 230 W  
432 x 330 x 70 (W x D x H) mm  
432 x 330 x 80 (including feet)  
Weight  
12 Kg  
NOTES  
C a s p i a n Preamplifier  
Caspian Dual Mono Preamplifier M series-1  
Purchase Date  
Serial Number: …………………………  
Year .……… Month …….. Day ……..  
ROKSAN Retailer  
Name:  
…………………………………  
Location: ………………………………  
Please keep a record for future reference  
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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