Reference 3004A - Receiver INFINITY - Free user manual and instructions

Product type	4-channel audio amplifier
Brand	Infinity
Model	Reference 3004A
Output power (4 ohms)	4 x 75 Watts RMS
Output power (2 ohms)	4 x 100 Watts RMS
Bridged power (4 ohms)	2 x 200 Watts RMS
Frequency response	10 Hz - 40 kHz
Crossover frequencies	32 - 320 Hz variable, 12 dB/octave (high-pass and low-pass)
Line level input sensitivity	200 mV - 2.0 V RMS
High level input sensitivity	2.0 V - 20 V RMS
Signal-to-noise ratio	> 80 dB
Total harmonic distortion (THD)	< 1%
Fuse	30 A x 2
Supply voltage	9 - 16 V DC
Dimensions (W x H x D)	320 x 55.5 x 180 mm
Weight	3.15 kg
Recommended wire gauge	8 AWG
Main features	High-pass, low-pass and full-range filters; adjustable gain; optional bass remote control
Maintenance and cleaning	Clean the exterior with a dry, soft cloth. Do not use chemicals.
Safety	Protection against short circuits, overheating and overvoltage; protection fuse.
Spare parts and repairability	User-replaceable fuse. For any repair, contact customer service.

Frequently Asked Questions - Reference 3004A INFINITY

What type of power cable should I use for the Infinity Reference 3004A?

Use a power cable of 8 AWG gauge for optimal installation.

Can I connect 2-ohm speakers to this amplifier?

Yes, the Reference 3004A supports 2 ohm loads in stereo configuration (4 x 100 W RMS).

What should I do if the amplifier does not turn on?

Check the power connections (BATT+ and REM) and ground. Use a voltmeter to measure voltage. Make sure the fuse is not blown.

How do I adjust the gain of the amplifier?

Start with the gain at minimum and the source volume at 3/4. Gradually increase the gain until you reach the desired level without distortion.

What does the protection light flashing every 4 seconds mean?

This indicates DC offset at the output. The amplifier may need servicing. Check the warranty.

Can I use the amplifier with a factory (speaker-level) audio system?

Yes, the high-level input accepts signals from 2.0 V to 20 V RMS. Set the INPUT LEVEL switch to HI1 or HI2.

How do I wire the amplifier in bridged mode?

For 2-channel bridged mode, use the left front (+) and right rear (-) terminals for example. The exact configuration is described in the manual. The power is 2 x 200 W RMS at 4 ohms.

What crossover frequency is recommended for a subwoofer?

Set the low-pass filter between 80 and 120 Hz according to your preferences and subwoofer characteristics.

What should I do if the sound is distorted?

Check the gain setting, ensure no short circuit in speaker wires, and check polarity of connections. Reduce gain if necessary.

Is it normal for the amplifier to get hot?

Moderate heat is normal. Make sure the mounting location allows adequate airflow. If the protection light comes on, the amplifier has overheated.

USER MANUAL Reference 3004A INFINITY

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Owner's Manual EN

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EN

MOUNTING THE AMP

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Note: It is recommended that you make all wire connections before mounting the amplifier.

ACCESSING CONNECTORS/ CONTROL PANEL

1. Slide the panel cover down
   

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IMPORTANT: Disconnect the vehicle's negative (−) battery terminal before beginning the installation.

• Always wear protective eyewear when using tools.
- Choose a safe mounting location, away from moisture. Check clearances on both sides of a planned mounting surface. Be sure that screws or wires will not puncture brake lines, fuel lines, or wiring harnesses and that wire routing will not interfere with the safe vehicle operation. Use caution when drilling or cutting in the mounting area.
- Choose a location that provides enough air circulation.
- Do not mount the amplifier with the heat sink facing downward, as this interferes with cooling.
- Mount the amplifier so that it will not be damaged by the feet of backseat passengers or shifting cargo in the trunk.

WIRING FOR POWER AND GROUND

At amplifier:

At ground location:

WIRING FOR INPUT SIGNAL

Reference 3004A low-level signals

Note: when using low-level signals and remote turn-on lead, set the "TURN ON MODE" and the " " REM INPUT LEVEL switch to "LO

Reference 7005A low-level signals

Note: when using low-level signals and remote turn-on lead with the Reference 7005A, set the "TURN-ON-MODE REM" and the SUB "INSMICH to " " and EKG" " INPUT LEVEL switch to "LO

Reference 3004A high-level signals

Note: when using high-level signals, set the "TURN-ON MODE switch to "DC" and the "INPUT LEVEL" switch to "HI1". If no sound plays, change the "INPUT LEVEL". HI2

Reference 7005A high-level input signals

Note: when using high-level signals with the Reference 7005A, set the "TURN-ON-MODE" the SUB " " Switch INPUT to "INT", and the "INPUT LEVEL" switch to "HI1". If no sound plays, change the "INPUT LEVEL". HI2

WIRING FOR OUTPUT

Reference 3004A 4-channel output (4ohm/2ohm)

Reference 3004A 3-channel output (Font: 4ohm/2ohm; Rear:4ohm)

Reference 3004A 2-channel output (4ohm)

graph TD
    A["Terminal Block"] --> B["Subwoofer"]
    B --> C["Terminal Block"]
    C --> D["Subwoofer"]
    style A fill:#f9f,stroke:#333
    style D fill:#bbf,stroke:#333

Reference 7005A 5-channel output (4ohm/2ohm)

CONNECTING THE REMOTE BASS CONTROLLER (REFERENCE 7005A ONLY)

SETTING GAIN, CROSSOVERS, AND BASS BOOST

Setting the gain

1. Start with GAIN control set to minimum, and the crossover control rotated midway.
2. For the front and rear channels, choose music you're familiar with. For the subwoofer channel on the Reference 7005A, choose music with substantial bass content.
3. Turn the volume control on your receiver to 34 of its total output.
4. Adjust the GAIN control clockwise, listening carefully to the bass output. If you hear distortion, turn the GAIN control counterclockwise to decrease the gain.

Selecting the crossover mode

On the front and rear channels, you can select your preferred crossover mode.

Choose HPF to allow only frequencies above a certain point to reach your speakers. Recommended if you're using a subwoofer in your system, as it keeps low base from your full-range speakers.

Choose LPF to allow only frequencies below a certain point to reach your speakers. Recommended if you're bridging the front or rear channels to power a subwoofer.

Choose FULL to allow all frequencies to reach your speakers. Recommended if you're not using a subwoofer in your system.

Note: The crossover mode for the subwoofer channel of the Reference 7005A is low-pass only.

Selecting the crossover frequency

Choose the crossover point to suit listening preferences. Turn the dials to the left to lower the crossover point and to the right to raise the crossover point. Exact crossover settings for coaxial speakers and subwoofers depend on your listening preferences.

Selecting the subwoofer phase (Reference 7005A only)

Switch the PHASE back and forth to determine which setting provides the most clean bass output.

Selecting the bass boost (Reference 7005A only)

Adjust the BASS-BOOST control clockwise or counterclockwise to suit your taste.

SPECIFICATIONS

	Reference 3004A	Reference 7005A
Power output @ 4 ohms	75 watts RMS x 4	50 watts RMS x 4, 320 watts x 1
Power output @ 2 ohms	100 watts RMS x 4	75 watts RMS x 4, 500 watts x 1
Power output in bridged mode	200 watts RMS x 2 at 4 ohms	150 watts RMS x 2 at 4 ohms
Frequency response	10-40 K Hz	10-40 K Hz / 10-320 Hz
Crossover frequencies	32-320 Hz variable, 12 dB/ octave	32-320 Hz variable high- and low-pass (front and rear); 32-320 Hz low-pass (subwoofer); 12 dB/ octave
Line-level input sensitivity	200 mVrms - 2.0 Vrms	200 mVrms - 2.0 Vrms
High-level input sensitivity	2.0 Vrms - 20 Vrms	2.0 Vrms - 20 Vrms
Signal-to-noise ratio >80 dB >80 dB
THD+N @ rated power	<1% <1%
Fuse rating 30 x 2 30 x 3
Operating voltage 9~16 V 9~16 V
Dimensions (W x H x D)	12-5/8" x 2-3/16" x 7-1/8" (320 mm x 55.5 mm x 180 mm)	14-3/16" x 2-3/16" x 7-1/8" (360 mm x 56 mm x 180 mm)
Weight 3.15 kg 4.02 kg
Recommended wire gauge	8	4

TROUBLESHOOTING

No audio and POWER INDICATOR is off.

- No voltage at BATT+ and/or REM terminals, or bad or no ground connection. Check voltages at amplifier terminals with VOM.

No audio and PROTECT INDICATOR flashes every 4 seconds.

- DC voltage on amplifier output. Amplifier may need service; see enclosed warranty card for service information.

No audio and PROTECT and POWER INDICATORS flash.

- Voltage less than 9V on BATT+ connection. Check vehicle charging system.

No audio and PROTECT INDICATOR is on.

- Amplifier is overheated. Make sure amplifier cooling is not blocked at mounting location. Or, there may be voltage greater than 16V (or less than 8.5V) on BATT+ connection. Check vehicle charging system.

Amplifier fuse keeps blowing.

- The wiring is connected incorrectly or there is a short circuit. Check wiring connections.

Distorted audio.

- Gain is not set properly. Check setting. Check wires for shorts or grounds. Amplifier or source unit may be defective.

Distorted audio and PROTECT INDICATOR flashes.

- Short circuit in speaker or wire. Remove speaker leads one at a time to locate shorted speaker or wire, and repair.

Music lacks dynamics or "punch".

- Speakers are not connected properly. Check speaker connections for proper polarity.

Engine noise—whining or clicking—in system when the engine is on.

- Amplifier is picking up alternator noise. First, check ground connection on the amplifier – a loose or improper ground is one of the main causes for noise. Turn down gain. Move RCA audio cables away from power wires. Installing an alternator noise filter on power line between battery and alternator might also be necessary.

HVAD ER DER I AESKEN

ADGANG TIL TILSLUTNINGER/ KONTROLPANEL

1. Skub paneldækslet ned
   

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1. Fjern paneldækslet
   

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DA

MONTERING AF FORSTÆRKEREN

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1. Abdeckung entfernen
   

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MONTAJE DEL AMPLIFICADOR

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VAHVISTIMEN ASENTAMINEN

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JOHDOTUS, VIRTA JA MAA

Vahvistimessa:

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1. Retirez le couvercle.
   

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MONTAGE DE L'AMPLIFICATEUR

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MONTAGGIO DELL'AMPLIFICATORE

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1. Verwijder het kapje
   

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DE VERSTERKER MONTEREN

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Reference 3004A low-level signals
NL

Reference 3004A high-level signalen

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VERSTERKING (GAIN), CROSSOVERS EN BASVERSTERKING INSTELLEN

Versterking (gain) instellen

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1. Usuń pokrywę panelu
   

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MONTAŻ WZMACNIACZA

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1. Retire a tampa do painel
   

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MONTAGEM DO AMPLIFICADOR

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MONTERING AV FÖRSTÄRKAREN

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STÄLLA IN FÖRSTÄRKNING, DELNINGSFILTER OCH BASFÖRSTÄRKNING

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AMPLIFIKATÖRÜN MONTAJI

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GÜÇ VE TOPRAKLAMA KABLOLAMA

Amplifikatörde:

1. 取下面板盖
   

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安装放大器

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2.取下面板蓋

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安装功放

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MEMASANG AMPLIFIER

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SAMBUNGAN KABEL DAYA DAN GROUND

Pada amplifier:

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アンプの取り付け

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電源とアース用配線

アンプでの配線:

2.패널 덮개를 분리합니다.

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앤프 장착

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