Directed Audio Python 500 Manual de usuario

OWNER’S MANUAL

Models 200/500

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CONGRATULATIONS

Thank you for choosing a Directed Audio

power amplifier. Directed has been the

leader in high-quality and innovative

security products in the U.S. since

1990. Now we introduce to the car

audio industry the same winning

formula - products that meet the strin-

gent standards of today’s mobile elec-

tronics enthusiast yet priced for

anyone’s budget. Featuring high-effi-

ciency MOSFET power supplies, flexible

on-board crossovers, and state-of-the-art

audio design, Directed Audio amplifiers

will satisfy every music lover’s needs for

years to come. Your Directed Audio

power amplifier comes with a two year

limited warranty if it is installed by an

authorized DEI dealer. Amplifiers not

installed by an authorized Directed

dealer are covered are covered by a one

year parts-and-labor limited warranty.

Please save your sales receipt and refer

to the warranty section of this manual

for complete details.

TABLE OF CONTENTS

High-powered car audio

systems may produce

sound pressure levels that exceed the

threshold at which hearing loss may

result.

They may also impair a driver’s ability to

hear traffic sounds or emergency vehi-

cles. Use common sense and practice

safe listening habits when listening to or

adjusting your audio system.

WARNING

Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 2

Amplifier Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 4

Amplifier Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 5

Speaker Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . .Page 6

Crossover Setting and Gain Adjustment . . . . . . . . . . . . . . . .Page 7

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 8

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 9

INSTALLATION GUIDELINES

1. Please read the owner’s manual

carefully before you install the

amplifier.

2. Disconnect the battery ground

terminal prior to making any elec-

trical connections.

3. Check for any hazards or obstruc-

tions such as gas tanks, fuel or

brake lines, and wiring harnesses

before mounting the amplifiers.

4. Pick a mounting location that will

provide adequate access and venti-

lation and protect the amplifier

from heat, moisture, and dirt.

5. Avoid sharp metal areas when

routing cables to the amplifier, and

run RCA cables away from the

power cables and other potentially

noisy car harnesses.

6. The amplifier should be grounded

with a short, heavy gauge wire

connected directly to the car at a

bare metal surface. Make sure

that the metal area is part of the

car chassis or frame, not a separate

part with poor electrical connection

to the chassis.

7. Always fuse your power connection

at the battery within 8-10 inches of

the battery terminal. Use a fuse or

circuit breaker rated at about 5-10

more amps than the on board

fuse(s) of the amplifier(s). The

gauge of power wire used should

take into account the total current

draw of the system, and the length

of wire used. IASCA and other

autosound competition organiza-

tions have charts available for this;

you can also find a chart in the

MECP study guide. Minimum wire

gauge recommendations for the

individual amplifiers are listed on

the specification page. It is a good

idea to use the same gauge wire

for the amplifier ground that you

use for the power wire. Be sure to

examine the battery ground cable

of the vehicle and upgrade it to a

gauge of wire that can accommo-

date the extra load created by your

amplifier installation. Remember,

the amplifier can only deliver its

rated output when it is not current

limited by the power and ground

supply wires.

8. This amplifier is designed to drive a

speaker load that measures from 2-

4 ohms. Keep in mind that heat is

the long-term enemy of automotive

electronics and that the lower your

speaker load, the more heat

INSTALLATION GUIDELINES (continued)

is generated. For low impedance

speaker applications or restricted

ventilation installations, an external

cooling fan may be advisable.

9. Your connections to the amplifier’s

speaker and power terminals

should be made with crimped spade

lugs, and the battery and ground

connections to the vehicle should be

made with crimped ring terminals

of the appropriate size (surface

area is what counts); soldering the

terminals after crimping is also

recommended.

10. Due to the high-frequency MOSFET

switching power supply used in all

Directed Audio amplifiers, filtering

the power cable is not generally

required (remember that the amp

can’t deliver full output if the power

supply is restricted). Proper

grounding of the signal source is

mandatory for the amplifier to

reach its performance peak. If the

RCA inputs are not grounded

adequately via the signal source,

electrical noise from the vehicle

may be picked up in the system.

1. GROUND TERMINAL - connect this

terminal to the car chassis with a

short heavy gauge wire, DO NOT

CONNECT TO THE NEGATIVE

TERMINAL OF THE CAR BATTERY or to

factory chassis ground points already

occupied by factory wires! If you are

grounding multiple amplifiers, you

may use a high-current distribution

block with proper gauge cables, or

use individual grounds for each amp

attached to the vehicle at separate

but close ground points.

2. REMOTE TERMINAL - connect this

terminal to the amplifier remote

output from your head unit or signal

source, if it provides one. You may

also use the power antenna output

wire from decks that do not have

separate amp remote outputs. This

input requires a switched +12V

signal to activate the amplifier. Do

not connect this terminal to a

constant source of +12V.

3. +12V POWER TERMINAL - connect

this terminal to the positive terminal

of the car or separate audio system

battery. Refer to the installation

guidelines and specs page for proper

gauge of wire. YOU MUST PROTECT

THIS WIRE WITH A FUSE or circuit

breaker located close to the battery.

4. POWER FUSE(s) - protects the ampli-

fier against electrical damage. DO

NOT REPLACE THE FUSE OR FUSES

WITH LARGER AMPERAGE FUSES ! If

the fuse(s) blows, check your system

for wiring problems or see your

dealer.

5. SPEAKER OUTPUT TERMINALS -

connect the speakers to these termi-

nals. Refer to the speaker wiring

diagrams (pg. 5) for different wiring

options.

AMPLIFIER CONNECTIONS

Refer to Figure 1 for details.

FIGURE 1—AMPLIFIER CONNECTIONS

1. RCA INPUT JACKS - accepts line-

level outputs from head units or

signal sources at voltages from

200 mV to 8 volts. High-grade

shielded or twisted pair RCA cables

are recommended for this input.

2. GAIN ADJUSTMENT - controls the

gain (input sensitivity) of the

amplifier. Each control sets the gain

for that half of the amplifier.

3. CROSSOVER SELECTION SWITCH -

controls the type of filter for each

of two on-board active crossovers.

LPF setting is used for low-pass

(subwoofer) output frequencies,

HPF is used for high-pass (mid-

bass/midrange) outputs. The FLAT

setting is used for full-range or

mixed stereo/mono applications.

4. BASS EQ - (model 500 only) these

switches activate an 8 dB bass

boost circuit. Use as necessary for

low frequency enhancement.

5. CROSSOVER FREQUENCY - controls

the frequency range of the ampli-

fier. Each half of the amplifier can

be set independently for optimum

performance.

6. LED INDICATOR - the green Power

LED lights to indicate normal opera-

tion. The green LED will shut off to

indicate amp shutdown due to

short circuit, DC offset, or over-

current conditions detected by on-

board protection circuits. Thermal

protection is also indicated by the

green LED shutting off.

AMPLIFIER CONTROLS

Refer to Figure 2 for details.

FIGURE 2—AMPLIFIER CONTROLS

SPEAKER WIRING DIAGRAMS

Stereo operation

Mono operation

Simultaneous stereo/mono operation (two channel shown)

For bridged two channel operation as shown in this diagram, connect right channel RCA

cables to the “Front” inputs of the amplifier, and left channel RCA cables to the “Rear”

inputs of the amplifier. For summed subwoofer applications, connect RCA cables per the

input jack marking.

CROSSOVER SETTINGS AND GAIN ADJUSTMENT

Your Directed Audio power amplifier needs to be adjusted carefully to achieve

maximum performance. These are some guidelines to follow when fine-tuning the

amplifier.

• For full-range and simultaneous stereo/mono bass applications, the crossover selec-

tion switch should be set to "FLAT". If the amplifier is driving your subwoofers, set the

switch to "LPF", and for mid-bass/midrange output, set to "HPF".

• The crossover frequency control needs to be adjusted to suit your particular system.

For subwoofer applications, try and keep the setting low enough to prevent image

smearing (you should not be able to hear male voices from the subwoofer) but not so

low as to create a gap between the subwoofer and the mid-bass/midrange speakers.

For mid-bass/midrange settings, try to keep the setting low enough to keep your

sound stage in front of you, without overdriving the speaker. It will be to your advan-

tage to spend some extra time with this adjustment, listening to familiar music or

system set-up discs to achieve the kind of musical reproduction that you prefer.

• The gain adjustment allows you to set proper signal match for clean, quiet amplifier

operation. For full-range and simultaneous stereo/mono bass applications, start by

playing some music you are familiar with. With the gain adjustment on the amplifier

in the middle of its rotation, bring up the volume on your head unit to the 3/4 volume

setting or until you start to hear distortion or clipping. If you hear distortion before

you reach the 3/4 volume setting of your head unit, reduce the gain setting on the

amplifier and start to raise the head unit volume again. When you can listen to the

music at or slightly above 3/4 on your head unit without audible distortion, slowly

raise the gain of the amplifier until distortion is heard, then back off the gain until the

distortion is not audible. This setting will allow you to reach full output with all but the

quietest of source material, while avoiding excessive noise in the system.

• The same procedure should be used for adjusting the amplifier when the on board

crossover is set to LPF or HPF, but you will also have to take into consideration the

effect that gain adjustment has on system frequency response and imaging. Again,

plan on spending some time with music that you know getting the gain and crossover

settings the way you like. Test discs and analyzers may help with this process, but in

the end it's your ears that count - listen to the music !

SPECIFICATIONS

RMS continuous power per channel, All channels

driven into 4 ohms from 20 to 20,000 Hz, with less

than 0.08% Total Harmonic Distortion @ 14.4 VDCC

RMS continuous power per channel, All channels

driven into 2 ohms from 20 to 20,000 Hz, with less

than 0.1% Total Harmonic Distortion @ 14.4 VDC

RMS continuous power, 2-channel operation, bridged

into 4 ohms from 20 to 20,000 Hz, with less than

0.1% Total Harmonic Distortion @ 14.4 VDC

Dynamic power rating (IHF-202 Standard) bridged

into 4 ohms

model 200 500

35 75

watts watts

50 120

watts watts

100x2 240x2

watts watts

Signal-to-Noise Ratio Greater than 95 dB

Frequency Response 20-20,000 Hz ± 0.5 dB

Damping Factor @ 4 ohm Greater than 200

Crossover Switchable high or low pass

12 dB/octave, continuously

variable from 50 to 500Hz

Bass Equalization +8 dB, centered at 40Hz

(model 500 only)

Input Impedance 20K ohms

Input Sensitivity Variable from 150 mV to 8 volt

Output Impedance 2 to 8 ohms, stereo

4 to 8 ohms, bridged

Supply Voltage 10 to 16 VDC

Fusing and Power 25A 50A

Cable Requirements (AWG) #12 #8

(Per amp, trunk mounted)

250 600

watts watts

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