Rockford Fosgate PUNCH 30, PUNCH 45HD, PUNCH 75HD, PUNCH 150HD Installation Manual
INSTALLATION
MANUAL
PUNCH 30
PUNCH 45HD
PUNCH 75HD
PUNCH
150HD
PRACTICE SAFE
SOUND™
CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER
100dB
MAY CAUSE PERMANENT
HEARING LOSS. HIGH-POWERED AUTOSOUND SYSTEMS MAY PRODUCE SOUND PRESSURE
LEVELS WELL OVER 130dB. USE COMMON SENSE AND PRACTICE SAFE SOUND.
Make your t.$
%~&c@Q
system complete with installation accessories from
~~&&ctlnkrfim
, a division of
Rockford
Corp. Ask your salesman about Perfect Power
alternator, power cables, speaker wire, connectors, cosmetic accessories and fabric.
TABLE
OF CONTENTS
INTRODUCTlON .................................................................................................................................
1
PUNCH EQUALIZER ...........................................................................................................................
1
INPUT CONNECTIONS .......................................................................................................................
1
INPUT LEVEL CONTROLS .................................................................................................................
2
POWER CONNECTlONS
....................................................................................................................
2
FUSE SELECTION
.............................................................................................................................. 2
GROUND CONNECTlON ....................................................................................................................
2
TURN ON CONNECTION ....................................................................................................................
3
SPEAKER CONNECTlONS ................................................................................................................
3
SPEAKER WIRE ..................................................................................................................................
3
SPEAKER IMPEDANCE ......................................................................................................................
4
BRIDGING MODE................................................................................................................................
4
SPEAKER FUSING.. ............................................................................................................................
4
PASSIVE CROSSOVER IMPEDANCE ...............................................................................................
5
TABLE OF COMPONENT VALUES ....................................................................................................
5
SPEAKER POWER RATINGS.............................................................................................................
5
TYPICAL SPEAKER CONFIGURATION .............................................................................................
6
PROTECTION CIRCUITS AND FUSING ............................................................................................
7
MOUNTING THE PUNCH.. ..................................................................................................................
7
BATTERY AND CHARGING SYSTEM.. ..............................................................................................
8
PUNCH30SPECIFICATIONS ............................................................................................................
9
PUNCH45SPECIFICATIONS ............................................................................................................
10
PUNCH 75SPECIFICATIONS
...........................................................................................................
11
PUNCH
150
SPECIFICATIONS ..............................................
........
...................................
...................
12
INTRODUCTION
The Rockford Punch 30, Punch 45, Punch 75 and Punch 150 are automotive stereo power amplifiers
which will provide state-of-the-art sound in cars, vans, boats, or wherever a 12
volt
battery is
available.
The Punch adjustable input circuits are designed to match almost any music source, from low
preamp levels to speaker levels, with negligible noise. The amplifiers will drive all normal
speaker
types, impedances, and configurations.
Internal circuitry in the Punch amplifier prevents damage due to speaker terminal shorts. The
Punch
incorporates internal battery line filtering and extensive noise prevent-on circuitry.
Due to the technical
nature
of our products, these installation instructions are enclosed. Damage to
speakers or electrical system may result from improper installation, therefore this Punch amplifier
should be PROFESSIONALLY INSTALLED. The length and nature of your warranty are dramatically affected if you attempt to install it yourself (see Warranty).
PUNCH EQUALIZER
The Punch equalizer incorporates unique, patented circuitry which is specifically designed to
overcome the problems commonly found in mobile speaker installations. Two rotary potentiometers
control bass and treble equalization circuits specially designed to compensate for the frequency
response errors present in most mobile installations. (Punch equalization is not available on the
Punch 30.) Unlike conventional tone controls, the Punch equalization corrects the specific problems
of poor low bass response and high frequency rolloff. The result is full-range sound without the
unpleasant changes in midrange sound produced by most tone control and equalizer circuits.
has ”RCA”
pin jackoutputs, connect the Punch to the source with
an”RCA” adapter
cable. In some cases, system noise rejection will be improved by using high-quality braided-shield
or double-shielded interconnecting cables.
When the source unit does not have pin jack outputs, wire the left
signai output to the black
center
conductor of an adapter cable; the right signal output to the red conductor, and
the ground to the
shield lines, or use Perfect Interface line output converter #RT-VILOC.
Some higher-powered source units employ “bridged” output circuits (“BTL” outputs). Units with
bridged outputs are normally rated at 15 to 25 Watts output by the manufacturer. To connect this
type
of unit to a Punch amplifier, the speaker positive (+) wires should go to the adapter
cable center
conductors, but the cable shield ground must be connected to the source chassis, NOT the
speaker
negative (-) wires.
Be sure to route the Punch signal input cable away from the white power wire and
the
car’s
wiring
harnesses, to avoid noise coupling.
Pre-assembled interconnector adapters are available from Rockford Corporation’s
Perfect Interface
Division for a wide variety of source units.
I
NOTE: In most Pioneer pre-amp output units, and some others, the audio shield ground is not at the source
chassis common. For these units, connect the shield lines to the audio shield and the chassis common.
-
INPUT CONNECTIONS (RCA PIN JACKS)
The amplifiers signal input female pin jacks should be connected to the source units signal
outputs.
If the source unit
INPUT LEVEL CONTROLS
The Punch input level controls are accessible with a jeweler’s screwdriver through two holes
in the cover. The controls are factory-preset to a level which matches most 500 millivolt to 1 volt
rated preamp-output source units.
If you are using the speaker
-
output leads of the source unit, turn the Punch input controls fully
counterclockwise to their minimum gain position.
If the volume control of the source is “touchy” and/or noisy-that is, if just a little volume from the
source drives the amplifier into distortion
-
reduce the Punch input gain controls so that the
distortion doesn’t start until the source volume is at about 3/4 of its rotation.
If maximum volume from the source won’t drive the Punch into distortion, increase the Punch
input gain controls until distortion starts at about
3/4
volume.
POWER CONNECTION
The B+ terminal on the Punch must be connected directly to the positive terminal of the battery
with the proper size fuse (type 3AG) and wire. (see Table 1). This provides a power source with
a low voltage drop and low noise. If the power is connected to any other point (the fuse block,
;
for instance) the amplifier’s power output will be reduced and oscillations and noise may distort
the sound.
The ground terminal on the Punch must be connected directly to the car chassis with large
gauge wire. Ground loops are aggravated by the length of the ground wire or any resistance
in the ground path. For this reason we don’t recommend extending the ground wire in any
installation. The ground point in the car should be a piece of chassis metal that is welded to the
main body of the car. Painted surfaces should be scraped or sanded clean before the ground
lug is bolted down. (Cover the bare metal area with paint or grease to prevent rust.)
If the power wires must be extended, use only 12-gauge or larger wire and make a good splice.
Avoid running the power wires near the input cabling antenna, power leads, sensitive equip-
ment or harnesses. The power wires carry substantial currents and could induce noise.
TABLE
1
Model B+ Fuse B+ Wire Size
GND Wire Size
(Mine with white wire) (White) (Black)
Punch 30 7-Amp
14
Gauge
14
Gauge
Punch 45 15-Amp
12
Gauge
12
Gauge
Punch 75
15Amp
12
Gauge
12
Gauge
Punch 150 25-Amp
12
Gauge
12
Gauge
2
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