Tascam PA-30 User Manual
»
PA-30
Dual Power Amplifier
OWNER’S MANUAL
9A09572800
Introduction
The TASCAM PA-30 is a high-performance
professional audio power amplifier for nearfield studio
monitoring and low-level sound reinforcement. In
stereo mode, the PA-30 delivers 30 watts per channel
continuously into an 8 ohm load - with no more than
0.05% total harmonic distortion. For applications
requiring higher output power, the unit may be
operated in BTL (Balanced Transformerless) mode also known as 'bridged' operation - and will deliver a
full 60 watts continuously into 8 ohms (see the 'BTL
Operation' section of this manual on page 9). In either
mode, it exhibits a flat frequency response
characteristic from 20 Hz to 20 kllz (+0, –1dB), with
very low residual hum and noise.
For maximum flexibility, the PA-30 is equipped with
both XLR-type balanced and RCA-type unbalanced
input connectors. These accommodate nominal input
signal operating levels of +4 dBm and –10 dBV,
respectively essentially eliminating the necessity for
external compensating pads or gain stages. A single,
continuously variable INPUT LEVEL control
attenuates input signals so the unit's sensitivity can be
calibrated to the gain structure of the source equipment.
The PA-30 is designed and built to provide years of
trouble-free service with little or no maintenance. Its
well built power transformer easily handles continuous
full-power operation, and all power semiconductor
circuits are mounted on a large convection-cooled
heatsink.
Multiple resettable electronic protection circuits guard
against destructive turn-on transients, output overload,
DC offsets and output shorts.
While the PA-30 is almost indestructible, it has been
engineered to be easy to service. Like all TASCAM
professional products, it is backed by a worldwide
network of TASCAM dealers and TEAC authorized
TASCAM service centers.
Connection and operation of the PA-30 is simple and
straightforward. This manual presents a detailed
description of the unit's features, along with basic
connection instructions and specifications. Please take
a few moments to study it before connecting and
operating your PA-30 Power Amplifier.
TABLE OF CONTENTS
Introduction................................................................. 2
Important Safety Instructions ..................................... 3
Summary of Operating Precautions............................ 4
Features....................................................................... 5
Connection & Installation........................................... 7
BTL Operation............................................................ 9
Specifications............................................................ 10
Ü
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert
ÿ
Ÿ
This appliance has a serial number
located on the rear panel. Please record
the model number and serial number
and retain them for your records.
Model number
Serial number
2 TASCAM PA-30
the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure
that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature
accompanying the appliance.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
WARNING: TO PREVENT FIRE OR SHOCK
HAZARD, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE.
IMPORTANT SAFETY INSTRUCTIONS
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in
accordance with the manufacturer's instructions.
8) Do not install near any heat sources such as
radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9) Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If
the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
10)Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
11) Only use attachments/accessories specified by the
manufacturer.
12) Use only with the cart, stand, tripod, bracket, or
table specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury
from tip-over.
• Do not expose this apparatus to drips or splashes.
• Do not place any objects filled with liquids, such as
vases, on the apparatus.
• Do not install this apparatus in a confined space such
as a book case or similar unit.
• The apparatus draws nominal non-operating power
from the AC outlet with its POWER switch in the off
position.
13) Unplug this apparatus during lightning storms or
when unused for long periods of time.
14) Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally,
or has been dropped.
TASCAM PA-30 3
Summary of Operating Precautions
• Do not use the PA-30 if the power cord appears
frayed or broken.
• Do not spill liquids into or on the PA-30 chassis. If
the chassis becomes wet, allow it to dry thoroughly
before reconnecting the unit.
• Allow sufficient space at the top, and bottom of the
PA-30 to permit a flow of cooling air. Keep the unit
away from radiators or others that produce heat.
•Never connect the PA-30 outputs to a battery, power
supply or other voltage source. Do not short the
output hot terminals together.
• The minimum allowable load impedance on each
PA-30 output is 8 ohms in stereo mode or BTL mode.
Connecting loads of lower impedance will result in
current limiting and/or activation of the protection
circuits.
• Before operating the PA-30, be certain that the
MODE switch is set in accordance with the desired
operational mode and output connection
configuration (see the 'BTL Operation' section of this
manual, page 9).
•Any unauthorized internal modification to the PA-30
will invalidate the warranty, and may result in
hazardous conditions. Refer all servicing to a TEAC
authorized TASCAM service center.
• Connect the PA-30 only to properly wired AC outlets.
Make certain that the voltage is correct for the
version of the unit that you are using (110 to 120
volts at 60 Hz for domestic USA).
AC Power Connection
The PA-30 requires a reliable source of single-phase
power at 110 to 120 volts AC, 60 Hz (domestic US
version). It has a two-prong, ungrounded AC cord, and
may be connected to either two-prong or three-prong
outlets.
If you have any doubt about the wiring of the outlet that
you wish to use, it is wise to test it before making
connections. Simple plug-in testers are available from a
variety of electronics and hardware stores.
If an outlet appears to require repairs, consult a
qualified electrician - and
don't use it. An improperly-
wired outlet may present a serious shock hazard.
For reference, Figure 1 shows the characteristics of a
properly wired US standard three-prong wall outlet.
120 VAC
Neutral
Earth
0 Volts
0 Volts
Figure 1. Standard wall Receptacle
Hot
0 ohms
120 VAC
Voltage Conversion
Be sure to unplug the power cord from the AC outlet
before repositioning the voltage converter switch.
1) Locate the voltage selector on the rear panel.
2) Using a flat-bladed screwdriver, set to the
appropriate 120 V or 230 V position according to
your area.
120V
Figure 2. Voltage Selector
4 TASCAM PA-30
Loading...