43.10 - Audio Amplifier Macrom - Free user manual and instructions

USER MANUAL 43.10 Macrom

MULTI-CHANNEL AMPLIFIER, BRIDGEABLE

Fig. 3/Abb. 35 INTRODUCTION For us at MACROM the achievement of the topmost sound quality is one of our greatest concerns. In buying one of the MACROM state-of-the-art amplifiers 43.05/43.07/43.10 we realize that this is also your concern. This unit offers 2x70/100/130 Watt max. per channel at 4 Ohm or 1x220/340/470 Watt max. when mono-bridged with pure and stable sound qualities. This instruction manual has been realized to help you to get the maximum out of the outstanding performances and the advanced features and functions of your new power amplifier. We advise you to read the following instructions very carefully in order to get familiar with the outstanding performances and the advanced features and functions of your new unit 43.05/43.07/ 43.10. Please report any problem to the nearest MACROM dealer. PRECAUTIONS

1. The unit may be damaged by wrong lead connection, therefore read carefully the instructions

of this manual for the correct connection of the leads.

2. The last lead to be connected is the one to the positive (+) terminal of the battery; connect this

lead only after having completed and checked all other connections.

3. Due to the power of the 43.-series it is imperative that all connections are clean and secure in

order to avoid damage to the unit.

4. Be sure to install the amplifier in a position with good air circulation and good heat dissipation.

5. In case of fuse replacement make sure to replace them with fuses of the same amperage. The

use of fuses with the wrong amperage may seriously damage the components of the unit. If fuses blow more than once, carefully check all electrical connections. Also have your car’s voltage regulator checked. Do not attempt to repair the unit yourself.If repairs are ever needed, take the unit to your MACROM dealer or to your nearest MACROM service station.

6. In order to obtain the best possible performance from this unit, make sure that the temperature

inside your car is within the range of -10° C and +60° C before you switch the unit on. Good air circulation is essential to prevent heat build-up inside the unit.6 FEATURES

• 3/2/1 CHANNEL OPERATION The amplifier can be operated as a stereo or a as mono-bridged amplifier thus doubling the output power independently from the input mode; the power can be subdivided as follows, according to your needs: a) 50/70/100 W RMS for each one of the two channels b) 50/70/100 W RMS for two stereo channels, and 130/180/250 W RMS mono c) 130/180/250 W RMS for one mono channel

• LOW-BOOST SELECTOR This switch boosts the low frequencies from 0 to +3 or +6 dB per octave.

• RCA INPUT SENSITIVITY The new amplifier has an input sensitivity set to 500 mV for optimum coupling with other MACROM sources. However, it is possible to adjust the sensitivity between 100 mV and 2 V for easy coupling of other sources available on the market.

• CHECK CONTROL INDICATOR This LED shows the current state of the amplifier. WHITE The unit is switched off. GREEN The unit works perfectly well. RED The unit is in the protection mode, something is wrong.

• OPTICAL GROUND DECOUPLING SYSTEM WITH FOURFOLD PROTECTION Your unit is equipped with four different protection devices, as befits all high-end products. These protections are fitted with an optical decoupling system for the separation of the input ground from the output ground: SOFT START: the amp powers gradually in order to avoid damage to the speakers in case the head unit is switched on with the volume control set to maximum. OVERHEATING: in case of wrong installation the unit enters the protection mode before being damaged. As soon as the temperature returns to normal values, the unit resumes normal operation. OVERLOADS: in case a series of speakers is connected to the amplifier with the total impedance value dropping below a tolerable level of 1-1.5 Ohm, the unit enters the protection mode. In this event check the total impedance value of the system. OUTPUT SHORT CIRCUIT: in case of a short circuit at the speaker outlets the unit enters the protection mode in order to avoid serious damage to the end-stage transistors. Normal operation is resumed on eliminating the short circuit.

• PWM MOS-FET POWER SUPPLY The great power of the 43.-series is obtained by means of a special stabilized C-Mos-Fet PWM (Pulse width modulation) supply unit which offers a constant power supply from 11 to 15 V, high efficiency with low current draw, high power stability to sudden voltage changes in your car’s electric system. The results are excellent performance, a linear and wide frequency response with high dynamics.

• REMOTE ON AND OFF On switching the head unit on or off, the amplifier is automatically switched on or off.

• CAPACITIVE/INDUCTIVE POWER SUPPLY FILTER A special circuit assures low level of radio frequency interferences (RFI) and cuts off system noises (i.e. the whine of the alternator).7 FEATURES

• SPEAKER IMPEDANCE 4 or 2 Ohm for stereo operation, 4 Ohm if mono-bridged INSTALLATION INSTALLATION (Fig. 3, page 4) Due to the high output power of the amplifier a great amount of heat is generated when the unit is in use. Therefore, it is necessary to install the unit in a position with good air circulation or otherwise the amp will enter the protection mode. The best place where to install the amplifier is the boot; avoid to cover the amp with carpet floor or other.

1. Place the amplifier at the point of installation chosen and mark the position of the four securing

2. Drill the screw holes.

3. Place the amp in the correct position and screw the four tapping screws on.

Note: Connect the ground lead to a screw already fixed to the metallic chassis of the car (identified by *) in order to ensure a good ground contact.

CONNECTIONS AND ADJUSTMENTS

1. Battery lead: Connect the BATT-terminal

11 directly to the car‘s battery with a yellow lead of adequate section. Do not connect this lead to circuits existing within the electric system of the car. In order to avoid damage to the car it is imperative that this lead be fitted with a fuse (not provided) as near as possible to the car‘s battery. This connection is the to be carried out last.

2. Remote switch-on lead: Connect the (REMOTE) switch-on lead or the control lead of the

power antenna coming from the head unit (blue) to the REMOTE terminal 13 of the amplifier. NOTE: In case this lead is not connected, the amplifier will not be switched on when the head unit is switched on. If your head unit is not fitted with an output connector for a power antenna, a quick-break lever switch (SPST) shall be installed between the power source (+12 V) and the remote switch-on lead and connected to the REMOTE terminal 13 so as to provide for manual switch-on of the amplifier.

3. Ground lead: Connect a ground lead (black) of adequate section to a clean spot on the car

chassis and to the GND terminal 12 . Make sure that the connection is sound and that there is electric continuity between this spot and the negative terminal of the battery. Use a ground cable as short as possible, and in case more than one amplifier are used connect all ground leads to the same spot.

4. FUSE: In case of fuse replacement make sure to replace them with fuses of the same

amperage. The use of fuses with the wrong amperage may seriously damage the components of the unit.

5. Speaker output terminals: Make sure to keep the right polarity and phase in connecting the

speakers. This includes the control of the right polarity, (+ and -). NOTE: Never connect the negative wires to each other and never use a common negative lead for all the speaker. Take care that inadequately isolated wires do not come into contact with the the ground, metallic parts of the car or with each other. 3-channel configuration 2-channel configuration 1-channel configuration

6. RCA-type input connectors: Connect the Pre output leads of your head unit to the RCA-type

input connectors by means of RCA extension cables (e.g. 90.05-90.10-90.25-90.50 by MACROM). Make sure to respect the right channel designation: left L (white) and right R (red).L(Mono) ST L+R 2V 0.1V 0.5V 2V 0.1V 0.5V OFF +3 +6dB OFF +3 +6dB OFF +3 +6dB

ADJUSTMENTS AND SWITCHES

INPUT SELECTOR SWITCH

a) STEREO MODE. Select the “ST” position when the amplifier is used as a 2-channel stereo system. Note: Also in this case connection of the mid channel is possible (C+ C-). b) MODE “L - MONO”. Select the “L Mono” position when the amplifier is used with only one input channel. Note: Connect the leads coming from a single speaker to the terminals (C+ C-) in order to obtain a BTL-connection (bridged). In case stereo output is requested, connect a second amplifier in the same way to the other speaker. c) L + R MODE. Select the “L+R” position of the switch when the amplifier is used for a subwoofer system using the right and left channel. Thus, the two inputs are blended into one mono output signal portioned out to the two channels or to one channel with twice the power, if the subwoofer is connected to the mid channel (C+ C-)

LOW-BOOST SELECTOR SWITCH

a) “OFF”-MODE: In the “Off”-position the amplifier has a linear response with no boosting of the low frequencies. b) “+3dB”-Mode: Select the “+3dB”-position to slightly boost the low frequencies. c) “+6dB”-Mode: Select the “+6dB”-position to boost the low frequencies even more.

INPUT GAIN ADJUSTMENT CONTROL

The mid position (click) is used for the selection of an input sensitivity of 500 mV corresponding to the preamplified outputs of MACROM products. In case the amplifier is to be connected to a head unit that is not of MACROM make but is fitted with preamplified RCA outputs, proceed as follows: a) Set the volume control of your head unit to 3/4 of maximum output level. b) Set the input gain control by means of a screwdriver from 2 V to 0.1 V to the point where the maximum sound level with no distortion is obtained. L(Mono) ST L+R L(Mono) ST L+R10 TECHNICAL DATA

MONO Output Low -Pass Output High -Pass One channel configuration Power Amplifier