Infinity Kappa 54a 4-Ch User Manual

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54a 4-Ch Power Amplifier

Owner’s Manual

Installation Guide

K A P P A 5 4 A P O W E R A M P L I F I E R

The Kappa 54a is a member of Infinity’s new Kappa series of mobile power amplifiers. Housed within the sleek, extruded aluminum frame, you’ll find the latest advances in circuit topology, along with user conveniences like a widerange input sensitivity control, auxiliary outputs, and a built-in electronic crossover. With features like these and more, you can quickly try out a variety of system ideas, and because the Kappa 54a belongs to a related product family, you’re assured future expansion will look as good as it sounds.

K A P P A 5 4 A A M P L I F I E R F E A T U R E S . . .

The Kappa 54a is a 4-channel power amplifier that offers stereo, bridged-mono, or tri-mode operation, and is rated at 50 watts (rms) per channel into a 4-ohm load. In a bridgedmono configurations, front and rear amplifiers can deliver up to 150 watts (rms) for the same load. The 54a also features:

2-ohm operation, rated at 75 watts (rms) per channel

Bridge/stereo switches for fast system setup

Built-in 12 dB-per-octave electronic crossovers, variable from 32 to 320 Hz

Individually selectable highand low-pass filters for all outputs (with through-pass on amplifier outputs and front/rear sum on auxiliary outputs)

Amplifier input sensitivity controls to match a wide range of input signal levels from 250 mV to 9 V

Five protection levels guard against over-voltage, undervoltage, over-power, over-temperature, and over-current situations

2-color LED array indicates green when power is on and orange when protection is activated

Industrial-grade, gold-plated, “pre-wire and plug-in” connectors for an easy-to-install high-quality interface

Transparent control cover to deter tampering yet provide a clear view of installation settings

Built-in automotive type fuses to protect the amplifier

Unibloc™ chassis provides improved heat-sink capacity and exceptional RFI shielding characteristics

A B O U T T H E W A R R A N T Y . . .

You’ve selected a premium product that offers superior performance and advanced materials, resulting from over 25 years of car audio design.This Infinity product is made with our ongoing dedication to creating the best consumer audio products possible. As a result, you can expect your new Kappa Power Amplifier to provide you with many years of listening enjoyment.

All Infinity Automotive Products carry a limited parts and labor warranty (see the enclosed warranty card), so retain the bill of sale to protect your purchase and to aid us with any service-related questions you may have.

A B O U T T H I S M A N U A L . . .

To attain maximum amplifier performance, we encourage you to read the remaining pages before installing and operating your new Infinity Kappa Power Amplifier. Especially review the Applications section (on the next page) for ideas on designing a system. Also, save these instructions for future reference.

IMPORTANT: Installation of automotive stereo components can require extensive experience in performing a variety of electrical, and mechanical procedures. Although these instructions explain how to install a Kappa Power Amplifier in a general sense, they do not show the exact installation methods for your particular vehicle. If you do not have the experience, do not attempt the installation yourself; instead ask your Authorized Infinity Car Audio Dealer about professional installation options.

DECLARATION OF CONFORMITY

We, Infinity Systems A/S

Kongevejen 194B

DK-3460 Birkerød

DENMARK

declare in own responsibility, that the product described in this owner’s manual is in compliance with technical standards EN 55013/A12/8.1994 and EN 55020/12.1994.

 

Steen Michaelsen

 

Infinity Systems A/S

 

Birkerød. DENMARK. 3/97

T A B L E O F C O N T E N T S . . .

 

A p p l i c a t i o n s . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

S y s t e m E x p a n s i o n . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

P r e c a u t i o n s A n d N o t e s . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

I n s t a l l a t i o n . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

T r o u b l e s h o o t i n g . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 – Infinity Kappa 54a Power Amplifier

Infinity Kappa 54a 4-Ch User Manual
(on top panel)
Set Front Filters
To HP & F+R (on AUX)
(on top panel)
Set Front Mode
To STEREO
(on top panel)
Set Front Filters
To HP & F+R (on AUX)
Set Front Mode
To STEREO
(on top panel)
Set Front Filters
To FLAT & F+R (on AUX)

A P P L I C A T I O N S

For your convenience, we’ve included several application diagrams to help you plan your own system installation. Figures 1 through 3 show how to configure the Kappa 54a for stereo, bridged-mono, and tri-mode operation.

Figure 1. This wiring diagram shows a Kappa 54a amplifier driving front and rear pairs of full-range speakers.

Set Front Mode

Set Rear Mode

To STEREO

To STEREO

(on top panel)

(on top panel)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Set Rear Filter

 

 

 

To FLAT

(on top panel)

(on top panel)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For system expansion ideas, see the next page.

NOTE: For simplicity, Figures 1 through 3 do not show power, remote, and input connections.

REM R +

L +

R +

L +

KAPPA 54a

RF Speaker

LR Speaker

 

 

(rear panel)

+

+

 

-

-

LF Speaker

RR Speaker

+

+

-

-

Figure 2. This wiring diagram shows a Kappa 54a amplifier driving a front pair of tweeter/midrange systems and a rear pair of full-range speakers.

Figure 3. This wiring diagram shows a Kappa 54a amplifier set for tri-mode operation to drive a front pair of tweeter/midrange systems and a single rear subwoofer.

Set Rear Mode

To STEREO

(on top panel)

 

 

 

 

 

 

 

 

 

 

 

Set Rear Filter

KAPPA 54a

 

To FLAT

 

(rear panel)

 

(on top panel)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Set Rear Mode

To BRIDGE

(on top panel)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Set Rear Filter

KAPPA 54a

 

To LP

 

(rear panel)

 

(on top panel)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REM R +

L +

R +

L +

RF

LR Speaker

System

+

 

-

-

 

+

 

LF

RR Speaker

System

 

 

+

-

-

 

+

 

REM R +

L +

R +

L +

RF

Rear

Subwoofer

System

 

- +

+

 

LF

-

System

-

 

+

 

Owner’s Manual/Installation Guide – 3

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