Directed Audio 650 Manuel utilisateur

OWNER’S MANUAL

Model 650

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

Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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 ampli-

fiers, 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 or power antenna output

wire from decks that do not have

separate amp remote outputs. 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 FUSES - protects the ampli-

fier against electrical damage. DO

NOT REPLACE THE FUSES WITH

LARGER AMPERAGE FUSES ! If the

fuses blow, check your system for

wiring problems or see your dealer.

5. SPEAKER OUTPUT TERMINALS -

Refer to the speaker wiring

diagrams (pg.6) for different

wiring options.

6. SUBWOOFER OUTPUT - connect

the subwoofer to these terminals.

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

200mV to 8 volts.

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.

Set crossover switches for proper

filter type depending on system

configuration.

4. REMOTE SUB LEVEL - controls the

subwoofer output level

5. SUBWOOFER LOW-PASS

CROSSOVER - use the gain and

crossover frequency controls to

adjust the subwoofer output.

6. BASS EQ - This switch activates an

8dB bass boost circuit. Use as

necessary for low frequency

enhancement.

7. CROSSOVER FREQUENCY - controls

the frequency range of the ampli-

fier. Each half of the amplifier can

be set independently for optimum

performance.

8. LED INDICATOR - the green Power

LED lights to indicate normal opera-

tion. The green LED will shut off to

indicate amp shutdown due to

thermal, short circuit, DC offset, or

over-current conditions detected by

on-board protection circuits.

AMPLIFIER CONTROLS

Refer to Figure 2 for details.

FIGURE 2—AMPLIFIER CONTROLS

SPEAKER WIRING DIAGRAMS

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

RCAcables to the “FRONT” inputs of the amplifier, and left channel RCA cables to the

“REAR” inputs of the amplifier.

Five channel operation

Three channel operation

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 normal complete system applications, the crossover selection switches should be

set to "HPF".

• The crossover frequency controls need 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 frequency 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 these adjustments, listening to familiar music or

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

• The gain adjustments allow 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 adjustments on the amplifier

in the middle of their 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 settings

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.

You may need to set the rear channels gain control lower to maintain a good sound

stage.

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

crossover is set to LPF or FLAT, 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,Channels 1-4 driven into 4 ohms

from 20 to 20,000 Hz, with less than 0.08% total Harmonic Distortion

@ 14.4 VDC. Channel 5 driven into 4 ohms from 20-250 Hz, with less

than 0.08% THD @ 14.4 VDC.

RMS continuous power per channel,Channels 1-4 driven into 2 ohms

from 20 to 20,000 Hz, with less than 0.1% Total Harmonic Distortion

@ 14.4 VDC. Channel 5 driven into 2 ohms from 20-250 Hz, with less

than 0.1% THD @ 14.4 VDC.

RMS continuous power, 3-channel operation, channels 1-4 bridged into

4 ohms from 20 to 20,000 Hz, with less than 0.1% Total Harmonic

Distortion @ 14.4 VDC. Channel 5 driven into 2 ohms from 20-250

Hz, with less than 0.1% THD @ 14.4 VDC.

Dynamic power rating (IHF-202 Standard) at

minimum load

50 250

watts watts

75 350

watts watts

ch 1-4 ch 5

800 watts

150x2 350

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 50 to 500 Hz

Subwoofer Crossover Low pass 12 dB/octave,

variable 50 to 250Hz

Bass Equalization +8 dB, centered at 40Hz

Input Impedance 20K ohms

Input Sensitivity Variable from 150 mV to 8 volt

Output Impedance (ch 1-4) 2 to 8 ohms, stereo

4 to 8 ohms, bridged

(ch 5) 2 to 4 ohms

Supply Voltage 10 to 16 VDC

Fusing and Power 60A

Cable Requirements (AWG) #8

(Per amp, trunk mounted)

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