ENGLISH
OPERATION MANUAL
JB SYSTEMS
®
3/44
Q3-USB
INSTALLATION GUIDELINES:
Install the turntable in a well-ventilated location where it will not be exposed to high temperatures or
humidity.
Placing and using the turntable for long periods near heat-generating sources such as amplifiers,
spotlights, etc. will affect its performance.
When the turntable is used in a loud-sound environment, for example near speakers, sound skip and
feedback may occur.
Install the unit on a perfectly horizontal and very stable surface. A concrete or marble surface is perfect. A
wooden surface is a bad choice while it amplifies vibrations.
Be sure the turntable, including its audio and mains cords, does not touch any vibrating materials. Take
special care when using the unit while it is installed in a carrying case.
CLEANING THE TURNTABLE:
Clean by wiping with a cloth slightly dipped with water. Avoid getting water inside the unit.
Do not use volatile liquids such as benzene or thinner which will damage the unit.
FUNCTIONS
1. START / STOP BUTTON:
Press this button to start or stop the platter.
2. PLATTER:
The platter is equipped with a slip mat. This makes it easier to manipulate the record for
scratch performances.
3. TARGET LIGHT:
Target light used to locate the exact place on your record when used in a dark place.
4. SPEED SELECT BUTTONS:
Used to select the desired speed.
Press the “33” button to select the 33rpm speed.
Press the “45” button to select the 45rpm speed.
ENGLISH
OPERATION MANUAL
JB SYSTEMS
®
4/44
Q3-USB
Press “33” and “45” buttons simultaneously to select the 78rpm speed.
5. REVERSE BUTTON:
Press this button to reverse the platter rotation, press this button again to end the
reverse mode.
6. PITCH RANGE BUTTON:
Press this button to adjust the range of the pitch slider.
Press ones for +/-10% speed range. (normally used for beat mixing)
Press again for +/-20% speed range.
7. QUARTZ LOCK BUTTON:
When the QUARTZ Button is pressed, the exact center speed (0%) is
enforced, even when the pitch slider is not in the middle. The led in the center of the pitch slider will be
lit.
8. PITCH SLIDER:
Use the pitch slider to change the actual speed of the platter. The Range depends on
the Pitch Range button. When the slider is in its middle position, the led next to the pitch slider will turn
on to indicate that the turntable is locked to the exact center speed. When the slider is not in the middle
the led turns off.
Attention:
take care that the Quartz lock button is switched off.
9. SINGLE ADAPTER:
Place this adapter on the platter for playing 7” records with large center holes.
10. POWER ON/OFF SWITCH:
Used to turn the turntable on / off.
11. POWER CORD CONNECTOR:
Used to connect to the mains, using the supplied power cord.
12. PHONO/LINE SWITCH:
Depending on the position of the phono/line switch, you can connect the
turntable to any phono or line level input.
13. PHONO/LINE OUTPUT:
Connect the turntable to any phono or line level input. Be sure to put the
phono/line switch in the correct position.
14. TONE ARM:
This is a fully manual S-shaped tone arm. To start playback, gently place the stylus on the
record using the head shell finger support. Do not drop the stylus onto the record as this may cause
damage to the diamond tip and to the record.
15. COUNTERWEIGHT:
Use the counterweight to balance the tone arm and to adjust the stylus pressure.
For the correct stylus pressure, please refer to the user manual of your cartridge.
Setting up the stylus pressure:
Make sure the cartridge is well fitted and
its needle protector is removed. Put a
record on the platter and make sure the
anti-skate is set to zero. Put the tone arm
lever in “down” position. Take the tone arm
and turn the counter- weight until the tone
arm is in perfect balance
It floats
horizontally above the record surface, see
“OK” picture at the right. Now set the
“stylus pressure ring” (front section of the
counterweight with markings) to zero by
turning the ring while you take care that
the counterweight doesn’t move. Next,
turn the complete counterweight clockwise
until the “stylus pressure ring” indicates the correct needle pressure.
Don’t forget to put the anti-
skate back in place.
16. ANTI-SKATE KNOB:
When a record is playing, side forces are generated, pushing the stylus towards
the center or the outside of the record. You can use the anti-skate knob to offset this force and keep the
needle centered in the groove. For standard playback simply turn the anti-skate knob to the same
number as the stylus pressure reads in grams. (Stylus pressure = 3gr.
anti-skate = 3)
17. TONE ARM LIFT:
Controls the up and down action of the tone arm.
18. TONE ARM CLAMP & REST:
Use this rest for the tone arm while changing a record. Attach the tone
arm to the rest using the clamp when the turntable is not used or when it is transported. This prevents
the tone arm from accidentally turning towards the platter and damaging the needle of the cartridge.
19. HEAD SHELL LOCKING NUT:
Attach the head
shell by inserting it into the front end of the tone arm
and then turn the locking nut clockwise.
20. HEAD SHELL:
Install the cartridge here. When
installing a cartridge, refer to the installation
instructions supplied by the manufacturer of that cartridge. During installation, attach the stylus protector
to guard the stylus tip from damage.
Attach wires as follows:
White (L+)
Left c
Blue (L-)
Left channel -
Red (R+)
Right c
