Omnitronic DD-5250 User manual

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Keep this manual for future needs!
Gardez ce mode d’emploi pour des
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Guarde este manual para posteriores usos.
BEDIENUNGSANLEITUNG
USER'S MANUAL
MODE D'EMPLOI
DD-5250
ULTRA TORQUE Turntable

MULTI-LANGUAGE-INSTRUCTIONS
Inhaltsverzeichnis
Table of contents
Sommaire
EINFÜHRUNG................................................................................................................................................... 3
SICHERHEITSHINWEISE................................................................................................................................. 4
BESTIMMUNGSGEMÄSSE VERWENDUNG .................................................................................................. 5
LIEFERUMFANG .............................................................................................................................................. 5
BESCHREIBUNG DER TEILE.......................................................................................................................... 6
INBETRIEBNAHME .......................................................................................................................................... 7
AUFSTELLEN................................................................................................................................................. 12
ANSCHLÜSSE................................................................................................................................................ 13
BEDIENUNG ................................................................................................................................................... 13
REINIGUNG UND WARTUNG........................................................................................................................ 15
TECHNISCHE DATEN.................................................................................................................................... 16
INTRODUCTION ............................................................................................................................................. 17
SAFETY INSTRUCTIONS .............................................................................................................................. 18
OPERATING DETERMINATIONS.................................................................................................................. 19
INCLUDED IN THE DELIVERY ...................................................................................................................... 19
GENERAL DESCRIPTION ............................................................................................................................. 20
SETUP............................................................................................................................................................. 21
INSTALLATION .............................................................................................................................................. 26
CONNECTIONS .............................................................................................................................................. 27
OPERATION ................................................................................................................................................... 27
CLEANING AND MAINTENANCE ................................................................................................................. 29
TECHNICAL SPECIFICATIONS..................................................................................................................... 29
INTRODUCTION ............................................................................................................................................. 30
INSTRUCTIONS DE SÉCURITÉ .................................................................................................................... 31
EMPLOI SELON LES PRÉSCRIPTIONS....................................................................................................... 32
LIVRÉ AVEC ................................................................................................................................................... 32
DESCRIPTION ................................................................................................................................................ 33
MISE EN SERVICE ......................................................................................................................................... 34
INSTALLATION .............................................................................................................................................. 39
CONNEXIONS................................................................................................................................................. 40
MANIEMENT ................................................................................................................................................... 40
NETTOYAGE ET MAINTENANCE................................................................................................................. 42
CARACTÉRISTIQUES TECHNIQUES........................................................................................................... 43
Das neueste Update dieser Bedienungsanleitung finden Sie im Internet unter:
You can find the latest update of this user manual in the Internet under:
Vous pouvez trouvez la dernière version de ce mode d'emploi dans l'Internet sous:
www.omnitronic.com

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OPERATING INSTRUCTIONS
DD-5250
ULTRA TORQUE-turntable
CAUTION!
Keep this device away from rain and moisture!
Unplug mains lead before opening the housing!
For your own safety, please read this user manual carefully
before you initial start-up.
Every person involved with the installation, operation and maintenance of this device has to
- be qualilfied
- follow the instructions of this manual
- consider this manual to be part of the total product
- keep this manual for the entire service life of the product
- pass this manual on to every further owner or user of the product
- include every supplementay update with the original manual
INTRODUCTION
Thank you for having chosen an OMNITRONIC DD-5250. If you follow the instructions given in this manual,
we can assure you that you will enjoy this device for many years.
Unpack your OMNITRONIC DD-5250.
Please make sure that there are no obvious transport damages. Should you notice any damages on the A/C
connection cable or on the casing, do not take the device into operation and immediately consult your local
dealer.
Features
Ultra Torque-turntable
Quartz-controlled for highest precision
• Extremely resoncance-free due to optimally combined components
• With Reverse-function
• Tone-arm height adjustable
• Three preset speeds (33 1/3, 45 and 78 RPM)
• Speed-control switchable from +/- 10 % to +/- 20 % and +/- 50 %
• Continuously pitchable without zero lock
• Quartz-controlled for highest precision
• Quartz Lock-button for returning to the preset standard speed
• Platter and motor are directly connected for highest stability
• Delivery without pick-up system

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• Two large Start/Stop-buttons
• Start/Stop-time individually adjustable
• Separate LED target lamp (stackable)
• Adjustable anti-skating
• Shock-absorbing feet
• Power cable and RCA-cable detachable
• Recessed connection for easy case-mounting
SAFETY INSTRUCTIONS
CAUTION!
Be careful with your operations. With a dangerous voltage you can suffer a dangerous
electric shock when touching the wires!
This device has left our premises in absolutely perfect condition. In order to maintain this condition and to
ensure a safe operation, it is absolutely necessary for the user to follow the safety instructions and warning
notes written in this user manual.
Important:
Damages caused by the disregard of this user manual are not subject to warranty. The dealer will
not accept liability for any resulting defects or problems.
Always plug in the power plug least. Make sure that the power-switch is set to OFF position before you
connect the device to the mains.
Keep away from heaters and other heating sources!
If the device has been exposed to drastic temperature fluctuation (e.g. after transportation), do not switch it
on immediately. The arising condensation water might damage your device. Leave the device switched off
until it has reached room temperature.
Never put any liquids on the device or close to it. Should any liquid enter the device nevertheless, disconnect
from mains immediately. Please let the device be checked by a qualified service technician before you
operate it again. Any damages caused by liquids having entered the device are not subject to warranty!
This device falls under protection-class I. The power plug must only be plugged into a protection class I
outlet.
Never let the power-cord come into contact with other cables! Handle the power-cord and all connections
with the mains with particular caution!
Make sure that the power-cord is never crimped or damaged by sharp edges. Check the device and the
power-cord from time to time.
Always disconnect from the mains, when the device is not in use or before cleaning it. Only handle the
power-cord by the plug. Never pull out the plug by tugging the power-cord.
Before the device is switched on all faders and volume controls have to be set to "0" or "min" position.
CAUTION: Turn the amplifier on last and off first!
Keep away children and amateurs!
CAUTION: High volumes can cause hearing damage!
There are no serviceable parts inside the device. Maintenance and service operations are only to be carried
out by authorized dealers.

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OPERATING DETERMINATIONS
This device is a professional turntable for playing standard LPs or Singles. This product is allowed to be
operated with an alternating current of 230 V, 50 Hz and was designed for indoor use only.
Do not shake the device. Avoid brute force when installing or operating the device.
When choosing the installation-spot, please make sure that the device is not exposed to extreme heat,
moisture or dust. There should not be any cables lying around. You endanger your own and the safety of
others!
Do not operate the device in extremely hot (more than 30° C) or extremely cold (less than 5° C)
surroundings. Keep away from direct insulation (particularly in cars) and heaters.
Operate the device only after having familiarized with its functions. Do not permit operation by persons not
qualified for operating the device. Most damages are the result of unprofessional operation!
Never use solvents or aggressive detergents in order to clean the device! Rather use a soft and damp cloth.
Please use the original packaging if the device is to be transported.
Never remove the serial barcode from the device as this would make the guarantee void.
If this device will be operated in any way different to the one described in this manual, the product may suffer
damages and the guarantee becomes void. Furthermore, any other operation may lead to dangers like short-
circuit, burns, electric shock, etc.
INCLUDED IN THE DELIVERY
- Turntable-chassis
- Platter
- Slipmat
- Counterweight
- Headshell (with cables)
- 45 RPM adaptor
- Target light
- RCA-cable with integrated earthing cable
- Power supply cable
- User manual

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GENERAL DESCRIPTION
1. START/STOP-button
2. Platter
3. Center axle
4. Speed-selector
5. Target light
6. Start Time-control
7. Stop Time-control
8. Direction-button
9. +/- 10/20/50 % button
10.Quartz Lock-button
11.Quartz LED
12.Pitchfader
13.Headshell
14.Tonearm
15.Tonearm-clamp
16.Tonarm-lift
17.Anti-Skating-wheel
18.Adjusting-ring for adjusting
the tonearm-height
19.Counterweight-scale
20.Counterweight
21. Phono Out-sockets
22. GND
23. Power supply socket
24. Power switch

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SETUP
Place the turntable on a plane, stable ground for carrying out the setup.
Carefully place the platter on the center axle
Caution:
The motor magnet is located on the turntable bottom. Make sure that the magnet will not be contaminated
with dirt or iron dust in order to guarantee full performance. Never drop the platter as this could result in
magnet damage.
Place the Slipmat on the platter.
Installing the pick-up system
Read the user manual of the pick-up system.
Put the stylus cover on the stylus.
Connect the Headshell's connection cables with the terminals of the pickup-system and make sure that the
occupation of the cables is correct.
The different colours mean:
Used colour: Channel and poles:
White (L+) Left, plus-pole
Blue (L-) Left, minus-pole
Red (R+) Right, plus-pole
Green (L-) Right, minus-pole
Only tighten the screws on the Headshell loosely, so that you can still move the system.
Adjusting the overhang/azimuth
The overhang is the distance between the stylus and the center of the turntable.
For optimized pick-up, the overhang should be set to 15 mm.
Move the system forwards or backwards until you reach the desired position.

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Position the system so that it is centered (correct azimuth).
Tighten the screws again.
Installing the headshell
Screw the system on the tonearm and tighten the fixation screw. Never overtighten in order not to dame the
tonearm or headshell.
Installing the counterweight
Screw the counterweight onto the tonearm's back.

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Make sure that the scale ring points to the front.
Adjusting the counterweight
• Remove the stylus cover.
• Set the Anti-skating-wheel to the 0 position.
• Set the tonearm lift to the down position
• Release the tonearm from the armrest and move it to a position between the turntable and the armrest.
Make sure that you do not damage the stylus.
• Carefully hold the tonearm and adjust the counterweight by turning it clockwise or anti-clockwise
respectively. The tonearm should be balanced to a horizontal position.
• Move the tonearm back to the armrest and clamp it.
• Put the stylus cover on the stylus.
• Set the scale on the counterweight to the 0 position without turning the counterweight.
Caution:
Hold the counterweight with one hand in order not to change the balanced setting (stylus pressure = 0). Only
move the scale ring.
• Turn the counterweight clockwise until the scale shows the value corresponding to the pressure of the used
stylus. Please follow the pick-up system manufacturer's instructions.

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Adjusting the tonearm-height
The tonarm-height varies from system to system. In order to guarantee perfect pick-up, we recommend to
adjust the tonearm-height via the adjusting-ring.
Before adjusting the tonarm-height please unlock the adjusting-ring lock.
Adjust the tonarm-height via as follows:
Height of pick-up
system in mm
Adjusting-ring
15 0
16 1
17 2
18 3
19 4
20 5
21 6
Please check visually if the tonearm and the LP is as parallel as possible.
After adjusting the tonarm-height please lock the adjusting-ring lock.
Adjusting the tracking force
Set the Anti-skating-wheel to the value equivalent to the pressure of the used stylus. Please follow the pick-
up system manufacturer's instructions.

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Target lamp
Under insufficient lighting conditions use the target light for spotting the exact starting position.
Insert the target lamp into the correct RCA-socket.
Caution:
Never connect any other plugs, e.g. mixer inputs etc. to this socket! Danger of heavy equipment damage.

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INSTALLATION
Install the turntable at the desired installation spot. Make sure to use a horizontal, stable surface.
This turntable was developed for professional DJs and can be assigned differently:
Traditional style
Battle style

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CONNECTIONS
Connect the RCA-cables (white=left channel, red=right channel) with the Phono-sockets of your amplifier or
mixer. Connect the ground lead with the ground terminal of your amplifier or mixer.
Connect the turntable to the mains.
OPERATION
After turning the unit on, the platter automatically moves with 33 RPM.
• Select the speed required for the record you want to play.
• Put the record on the platter. Use the 45 RPM adaptor if needed (e.g. for singles).
• If you wish to set the speed to 45 RPM, press the 45-button. If you wish to set the speed to 78 RPM,
simultaneously press the 33-button and the 45-button.
• Remove the the stylus cover and release the tonearm.
• Press the START/STOP-button and the platter begins to rotate.

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• Set the tonearm lift to the up position and move the tonearm to the desired starting position.
• Set the tonearm lift to the down position and the tonearm slowly lowers to the record.
• Should you desire to stop the turntable without removing the tonearm from the record, simply press the
START/STOP-button. The electro-brake will stop the rotation according to the settings.
• Should you desire to interrupt playback for a short period, set the tonearm lift to the up position. When you
wish to continue playback, set the tonearm lift back to the down position.
• When you do not need the tonearm lift at all, leave it in the down positon.
Adjusting the playback-speed:
• You can adjust the playback-speed by up to 50 %. If you wish to adjust the playback-speed by +/- 10 %
press the +/- 10 % button. If you wish to adjust the playback-speed by +/- 20 % press the +/- 20 % button. If
you wish to adjust the playback-speed by +/- 50 % press the +/- 10 % and the +/- 20 % button simulta-
neously. Move the pitchfader to the desired position. If you wish to have the exact playback-speed with 0 %
adjustment, press the Quartz-button.
Adjusting the rotation-direction:
After turning the unit on, the platter moves forwards. You can reverse the rotation-direction by pressing the
Direction-button.
Adjusting the start/break time
With the DD-5250, you can individually adjust the start/break time between 0.2 and 6 seconds.
Turn the start time-control or stop time-control until the desired time is set.

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CLEANING AND MAINTENANCE
Disconnect from mains before starting maintenance operation!
DANGER TO LIFE!
We recommend a frequent cleaning of the device. Please use a soft lint-free and moistened cloth. Never use
alcohol or solvents!
There are no servicable parts inside the device. Maintenance and service operations are only to be carried
out by authorized dealers.
Should you need any spare parts, please use genuine parts.
Should you have further questions, please contact your dealer.
TECHNICAL SPECIFICATIONS
Type: 3-speed full manual turntable
Drive-method: Quartz-controlled direct-drive
Motor: Brushless DC-motor
Power supply: 230 V AC, 50 Hz ~
Power consumption: 13 W
Frequency range: 20 - 20,000 Hz, ± 1 dB
S/N-ratio: > 60 dB (DIN B)
Wow & Flutter: < 0.1 % WRMS at 33 RPM
Channel separation: > 20 dB
Speed: 33 1/3 RPM, 45 RPM and 78 RPM
Change-time between the speeds:
33 <-> 45 RPM in < 0.2 sec.
33 <-> 78 RPM in < 0.5 sec.
45 <-> 33 RPM in < 0.2 sec.
45 <-> 78 RPM in < 0.5 sec.
Rotation-direction: Forwards/backwards
Pitch adjustment: ± 10 %, ± 20 % or ± 50 % via fader
Initial torque: > 4.5 kg/cm
Adjustable start time: 0.2 - 6 sec.
Brake: Electric brake
Adjustable stop time: 0.2 - 6 sec.
Platter: Outer diameter 332 mm
Weight 1,400 g
Tonearm: S-shape with Cardan's suspension
Tonearm-length: 230 mm
Adjusting the tonearm-height: 8-10.5 mm
Overhang: 15 mm
Adjustable stylus-pressure 2-5 g
Anti-Skating-range: 0-3 g
Dimensions: 450 x 350 x 160 mm
Weight: 11 kg
Please note: Every information is subject to change without prior notice. 27.05.2003 ©