Unika PX-22SUB User manual

AMPLIFIER PX-22SUB
User Instructions
This booklet contains important information concerning the proper and safe operation of your new amplifier..
Made in Taiwan
Index
02 Precautions
02 Introduction
03 Front Panel
03 Rear Panel
04 Table of contents
04 Warranty
04 Limited domestic warranty
04 Technical specifications
UNiKA
P R O F E S S I O N A L A U D I O
A B
 
Hi LEVELSUB LEVEL
+6 +6
U U
POWER
I
O
INPUT CLIP CLIP PX-22SUB
UNiKA
PROFESSIONAL AUDIO CROSSOVER SUB PHASE
80
100
125
0°
180°
Hz
TWO WAY SUBSTEREO X-OVER

Precautions Introduction Front Panel Rear Panel Table of contents Warranty Limited domestic warranty Technical specifications
AMPLIFIER
2
PX-22SUB
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: To reduce the risk of electrical shock, do
not remove the cover (or back). No user
serviceable parts inside; refer servicing to
qualified personnel.
WARNING: To reduce the risk of fire or electrical
shock, do not expose this appliance to rain
or moisture.
This symbol, wherever it appears, alerts
you to the presence of uninsulated
dangerous voltage inside the enclosure -
voltage that may be sufficient to constitute
a risk of shock.
This symbol, wherever it appears, alerts
you to important operating and
maintenance instructions in the
accompanying literature. Read the
manual.
!
!
Important Precautions
To reduce the risk of electrical shock or fire, do not
expose this unit rain or moisture.
Make sure that the AC Mains voltage is correct and
matches the voltage painted on the rear panel of the
amplifier (110 V or 220V)
Do not spill water or other liquids into or on to your unit.
Do not attempt to operate this unit if the power cord has
been frayed or broken.
Do not attempt to remove or break off the ground prong
from the electrical cord. This prong is used to reduce the
risk of electrical shock and f re in case of an internal short.
Disconnect main power before making any type of
connection.
Do not remove the cover under any conditions. There are
no user serviceable parts inside.
Never plug this unit in to a dimmer pack.
Always be sure to mount this unit in an area that will allow
proper ventilation. Allow about 6” (15cm) between this
device and a wall.
Do not attempt to operate this unit, if it becomes damaged.
This unit is intended for indoor use only, use of this product
outdoors voids all warranties.
During long periods of non-use, disconnect the unit’s main
power.
Always mount this unit in a safe and stable manner.
Power cords should be routed so they are not likely to be
walked on, pinched by items placed upon or against them.
Cleaning -The outside of the unit should be wipe down with
a soft cloth and mild cleaner when needed.
Heat -The amplifier should be situated away from heat
sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
The fixture should be serviced by qualified service
personnel when:
A. The power-supply cord or the plug has been damaged.
B. Objects have fallen, or liquid has been spilled into the unit.
C. The appliance has been exposed to rain or water.
D. The fixture does not appear to operate normally or exhibits
a marked change in performance.
Introduction
PX-22SUB
Thank you for purchasing the PX-22SUB. This manual
contains important information about installing and
operating the unit correctly and safely. Read this
manual carefully before using the unit.
The PX-22SUB has been developed using the latest
computer aided electronic design systems. All
electronic components used in the PX-22SUB have
been carefully selected to meet demanding quality
control procedures carried out by our staff of engineers.
The unit is designed to be mounted in a standard 19"
rack. Its height is one DIN-unit. For rack
mounting, there are four holes in the front panel to
fasten the units to a rack with metric screws.
Due to continuous investigation and development,
UNiKA reserves the right to change the specifications of
the product and the content of this manual without prior
notice. Please check the UNiKA website for the latest
updates.
If the product requires repairing or if you need
information about the warranty, please contact an
approved UNiKA distributor.
The PX-22SUB DESCRIPTION:
The PX-22SUB device is an active stereo sub-woofer
two way crossover, featuring two inputs and four
outputs, active filters can be applied in the four outputs
with a preset crossover point selectable with the
crossover switch. The system can be fine tuned with
the output level control knobs and phase polarity of the
sub-woofer output can be switched to achieve desired
results. This unit was developed to be easily operated
and for rough handling. For this purpose, PX-22SUB
uses hi quality, carefully selected components,
improved design, reliable performance, and simple
appearance for intuitive operation.

3
Front Panel Control
Figure 1
4
1. Power Switch - When the power is turned on, the center
logo will be lit, to indicate the unit is in operation.
2. Cross-over Point - Three positional switches, each
determine the cross-over frequency point of the unit. The
selectable cross-over frequency points are: 80Hz, 100Hz
or 125Hz.
3. Sub Phase - Used to reverse the phase of the sub signal.
4. Input Signal Indicator: Two input signal indicator LEDs,
each represent left and right input. LEDs will be lit when
there are audio signal is fed to the input.
5. Sub-Bass Level Control Knob - Used to adjust the output level of the
signal below the selected cross-over point.
6. High Level Control Knob - Used to adjust the output level of the
signal above the selected cross-over point.
7. Sub-bass Clip - This LED is lit when the output of Sub-bass signal is
distorted.
8. Hi Clip - This LED is lit when the output of Hi signal is distorted.
Figure 2
Rear Panel Control
A B
 
Hi LEVELSUB LEVEL
+6 +6
U U
POWER
I
O
INPUT CLIP CLIP
UNiKA
PROFESSIONAL AUDIO CROSSOVER SUB PHASE
80
100
125
0°
180°
Hz
Precautions Introduction Table of contents Warranty Limited domestic warranty Technical specifications Front Panel Rear Panel
AMPLIFIER PX-22SUB
5 7 6 8 2 3 1
115
S
U
E
F
AC INPUT
FUSE
~115VAC 0.5A
~230VAC 0.25A
VOLTAGE
SUB OUT SUB OUT
STEREO
MONO
Hi OUT Hi OUT ININ
CH-B CH-ACH-B CH-A CH-B CH-A
Serial No.:
CAUTION -TO PREVENT ELECTRIC SHOCK, DO NOT REMOVE COVER
OR ANY SCREWS. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
9 10 11 12 16 14 13
15
9.Main Power Connector - The mains power AC input is via
a Neutrik powerCON connector, rated at 20A. The power
supply must be connected to AC mains using a power
cable with a correctly wired plug for the country of
operation.
10.Fuse Holder - This holder houses the external 0.5 amp
fuse. Always replace with the exact the same type fuse
unless otherwise instructed.
11.Input Voltage Selector - The input voltage selector can
be 115V AC or 230V AC (+/–5%).
12.Serial Number - Every unit has a serial number. This
number matches individual technical inspection and
quality control verification sheets which are filed at the
factory for future reference.
13.Input – XLR - Every unit is equipped with balanced
inputs. { 1Gnd. = Ground, 2 = (+) Hot, 3 = (–) Cold}
14.Sub-Bass Outputs – XLR - Sub-Bass signal outputs.
They send the signal which is below your cross-over
frequency point. Every unit is equipped with balanced Outputs. { 1Gnd.
= Ground, 2 = (+) Hot, 3 = (–) Cold}
15.Sub-Bass Output Mode Switch - The switch is used to select to
output of the unit to run in Stereo or Mono mode. When in Stereo
Mode, the Output A is sending the signal from Input A after it is
processed, and the Output B is sending the signal from Input B after it
is processed. When in Mono Mode, Both Output A and Output B are
sending the summed signal from Input A and Input B, so you can have
two Mono signals.
16.High Signal Outputs - High signal outputs. They send the signal
which is above your cross-over frequency point. Every unit is equipped
with balanced Outputs. { 1Gnd. = Ground, 2 = (+) Hot, 3 = (–) Cold}
Balanced wiring
Figure 3
The polarity is according to AES14-1992 (ANSI S4.48-1992)
PX-22SUB
TWO WAY SUBSTEREO X-OVER

4
Precautions Introduction Front Panel Rear Panel Table of contents Warranty Limited domestic warranty Technical specifications
AMPLIFIER PX-22SUB
Limited Domestic Warranty
UNiKA WARRANTS THIS PRODUCTS AGAINST DEFECTS IN MATERIAL OR WORKMANSHIP.
This limited warranty extends to all purchasers or owners of the product during the warranty period beginning with the
original retail purchase. UNiKA does not, however, warrant its products against any and all defects:
1) arising out of material or workmanship not provided or furnished by UNiKA, or
2) resulting from abnormal use of the product or use in violation of instructions, or
3) in products repaired or serviced by other than authorized UNiKA repair facilities, or
4) in products with removed or defaced serial numbers, or
5) in components or parts or products expressly warranted by another manufacturer.
6) UNiKA agrees to supply all parts and labor to repair or replace defects covered by this limited warranty with parts or
products of original or improved design, at its option in each respect, if the defective product is shipped prior to the end of
the warranty period to any UNiKA authorized warranty repair facility in your country or to the UNiKA factory in the original
packaging or a replacement supplied by UNiKA, with all transportation costs and full insurance paid each way by the
purchaser or owner.
ALL REMEDIES AND THE MEASURE OF DAMAGES ARE LIMITED TO THE ABOVE SERVICES, IT IS POSSIBLE
THAT ECONOMIC LOSS OR INJURY TO PERSON OR PROPERTY MAY RESULT FROM THE FAILURE OF THE
PRODUCT; HOWEVER, EVEN IF UNiKA HAS BEEN ADVISED OF THIS POSSIBILITY, THIS LIMITED WARRANTY
DOES NOT COVER ANY SUCH CONSEQUENTIAL OR INCIDENTAL DAMAGES. SOME COUNTRIES DO NOT
ALLOW THE LIMITATIONS OR EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE
LIMITATION MAY NOT APPLY TO YOU. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND
YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE, COUNTRY TO COUNTRY.
Table Of Contents
1pc of PX-22SUB TWO WAY SUB STEREO X-OVER
1pc of AC Power Cord
1pc of User Manual
4pcs of Rubber Foot
Warranty
Carefully open the shipping carton and check the product
for any noticeable damage. Each UNiKA product is
carefully tested and inspected before leaving the factory
and should arrive in perfect condition.
If found to be damaged, notify the shipping company or
the distributor immediately. Only the consignee may
initiate a claim with the carrier for damage incurred during
shipping. Be sure to save the carton and packing
materials for the carrier's inspection.
Technical Specifications
1. Linkwitz-Riley 24 dB/Octave
2. Selectable Sub-Bass Output Mode.
3. Input signal LED indicator.
4. Balanced Inputs and Outputs
5. Seperated Sub-Bass and High level control with clip
indicator.
6. Back lighted power indicator.
7. Subsonic filter (25Hz) and Ultrasonic filter (20kHz)
8. Maximum Input level : 27dBu
Maximum Output level : 27dBu
9. Selectable cross-over frequency : 80Hz, 100Hz,
125Hz.
10. Phase Invert : Inverts the phase at the sub output.
11. Frequency responce : 25Hz ~ 20kHz.
12. Signal to Noise : >100dB
13. T.H.D. : > 0.02%
14. Power Requirements : 120V/220V AC 50/60Hz
18Watts.
15. Level Contro Range : -∞,0dB, +6dB
16. PowerCom Input connector for AC input.
17. Dimensions : 44 x 483 x 218mm.
UNiKA
P R O F E S S I O N A L A U D I O
WWW: http://www.unika.com.tw
E-Mail: [email protected]
Tel : [phone] Fax: [phone]
6F., No. 168, Xinhu 2nd Rd., Neihu Dist., Taipei City 114, Taiwan (R.O.C.)