QSC Audio SPA-3 owner manual Warranty and Disclaimers, Product Warranty

Page 4

Operation

Press (n = Channel #)

 

IV. OPERATION

 

 

 

 

The table at left shows the button sequences for all possible operations on the

Increase signal (decrease attenuation)

UPn

 

Increase signal (scroll)

Hold UPn

 

SPA-3.

 

 

 

 

 

 

Decrease signal (increase attenuation)

DOWNn

 

The adjustable range of attenuation on each channel is 0 (no attenuation) to

Decrease signal (scroll)

Hold DOWNn

 

32 dB. The attenuation changes in real time as you make the adjustments. Half-

Bypass/engage attenuation (toggle)

SHIFTn + UPn

 

decibel settings are indicated by the right decimal point of the two-digit

Increment step toggle (1 or 0.5 dB)

SHIFTn + DOWNn

 

display. For example, a display of

indicates a setting of 18 dB of attenuation,

Display firmware version

SHIFT1 + SHIFT2

 

while

would indicate 18.5 dB. Even when its DC power is removed, the SPA-3

 

 

 

will retain its settings in non-volatile memory.

Mute Channel 1

SHIFT2 + UP1

 

 

 

 

 

 

Mute Channel 2

SHIFT1 + UP2

 

 

 

 

 

 

 

 

 

 

Lock Channel 1

SHIFT2 + DOWN1

 

 

 

 

 

 

 

 

 

 

Lock Channel 2

SHIFT1 + DOWN2

 

 

 

 

 

 

 

 

 

 

 

Attenuation display

 

 

 

Up button

Signal indicators

 

(dB) UP

CH 2 ATTENUATION

(dB) UP

CH 1 ATTENUATION

 

 

 

 

 

 

Down button

External DC power jack

Inputs

SIGNAL CH 1

CH 2

15V 300 mA

SHIFT

DOWN

 

INPUT

 

TRANSFORMER

 

Y

ACCESSOR

 

-AC

SG-000005

XF-1 OPTIONAL

SHIFT

DOWN

 

INPUT

TRANSFORMER

 

Y

ACCESSOR

 

-AC

SG-000005

XF-1 OPTIONAL

UPUP

 

 

+

 

 

+

DOWN

 

 

+

SHIFTSHIFT

=

 

SHIFT

 

 

 

=

other

=

ENGAGE

 

OGGLE

/

 

 

BYPASS

dB

1

5

 

 

 

 

 

 

.

MUTE/UNMUTE0

 

 

 

DOWN

 

 

 

+

 

 

 

WN

 

 

 

SHIFT

 

 

 

DO

 

UP

 

 

 

holdother

 

 

 

&=

 

 

hold

 

 

 

&

Shift button

 

S INC.

QSC AUDIO PRODUCT

COSTA MESA,

CA USA

 

DOWN

 

press

UP

 

 

channel

=

 

=

= press

 

 

=WN

 

 

 

OCK

 

UPDO

SIGNAL

 

 

SIGNAL

 

 

LOCK/UNL

.

 

.

 

 

 

 

 

INCRDECRSCROLLSCROLL

 

 

 

-3

CH 2

INPUT

EXT. POWER

CH 1

INPUT

SPA

 

 

 

 

 

 

 

 

 

 

TOR

 

STEREO PRECISION

ATTENUA

 

 

 

 

 

The buttons, displays, and other features of the SPA-3

V. WARRANTY AND DISCLAIMERS

Disclaimer

QSC Audio Products, Inc. is not liable for any damage to speakers, amplifiers, or any other equipment that is caused by negligence or improper installation and/or use of the SPA-3.

Product Warranty

QSC Audio Products, Inc. guarantees the SPA-3 to be free from defective material and/or workmanship for a period of three years from date of sale, and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installation and use—provided the unit is returned to our factory via prepaid transportation with proof of purchase (sales receipt). This warranty provides that examination of the returned product must disclose, in our judgment, a manufacturing defect. This warranty does not extend to any product which has been subject to misuse, neglect, accident, improper installation, or where the date code has been removed or defaced.

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Contents Owner’s Manual Description II. Features III. InstallationProduct Warranty Warranty and DisclaimersDisclaimer VI. Technical Assistance & Service Technical Assistance Factory ServiceQualified Service Centers International Servicing
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SPA-3 specifications

QSC Audio SPA-3 is an innovative power amplifier designed to meet the demanding needs of modern audio applications. With its compact design and advanced technology, the SPA-3 offers a powerful solution for professional audio engineers, venue operators, and like-minded enthusiasts.

One of the standout features of the SPA-3 is its versatility. This three-channel amplifier has a power output of up to 300 watts per channel at 4 ohms, making it suitable for a range of applications from small venues to larger installations. The SPA-3 can be used in various configurations, including stereo, mono bridge, or even as a multi-channel solution, allowing users to tailor their audio setup to their specific requirements.

The SPA-3 utilizes advanced Class D technology, ensuring high efficiency and low power consumption while still achieving impressive sound quality. The lightweight design not only simplifies transportation and installation but also minimizes heat generation, leading to enhanced reliability during extended use. The amplifier incorporates QSC’s proprietary DSP, which enables users to take advantage of features such as customizable EQ settings, delay adjustments, and limiter functions to optimize audio performance for any environment.

Connectivity is another strong point of the QSC SPA-3. The amplifier is equipped with balanced XLR and 1/4-inch TRS inputs, as well as binding post speaker outputs, providing flexibility for various audio sources and speaker types. Additionally, the amplifier features a comprehensive front-panel interface, which includes status LEDs for power, signal, and clipping indications, allowing users to easily monitor performance and troubleshoot any issues.

Durability is a hallmark of QSC products, and the SPA-3 is no exception. The amplifier is housed in a sturdy, rugged chassis designed to withstand the rigors of live performance and installation environments. It also features comprehensive protection circuitry, including over-temperature, short-circuit, and DC protection, ensuring both safety and longevity for the unit and connected speakers.

In summary, the QSC SPA-3 is a powerful, versatile, and efficient amplifier suited for a variety of professional audio applications. With its advanced Class D technology, customizable DSP features, flexible connectivity options, and robust design, the SPA-3 stands out as an exceptional choice for anyone looking to elevate their audio experience.
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