42.15 - Car stereo Macrom - Free user manual and instructions

USER MANUAL 42.15 Macrom

103-CHANNEL CONFIGURATION Left channel Right channel 2-CHANNEL CONFIGURATION Left channel Right channel 1-CHANNEL CONFIGURATION Left channel Left Right Mono Left Right Mono

Note: For the other channel another amplifier must to be used in same way. 5Three channel passive configuration

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 42.15/42.17 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 use 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. INTRODUCTION For us at MACROM the achievement of the best sound quality is one of our greatest concerns. In buying the Digital Ready amplifier MACROM 42.15/42.17 we realize that this is also your concern. This unit offers 70/100 Watt max. per channel at 4 Ohm or 150/200 Watt max. when mono-bridged with pure and stable sound qualities. This instruction manual has been prepared in order to help you to make the most of the outstanding performances and the advanced features and functions of your new amp. We advise you to read these instructions carefully to famialirise yourself with all the special feature of your 42.15/42.17. Please report any problem to your nearest MACROM dealer.

• 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) 70/100 Watts for each one of the two channels b) 70/100 Watts for two stereo channels, and 150/200 Watts mono c) 150/200 Watts for one mono channel

• NO CURRENT LIMITATIONS The current limitation circuits incorporated in traditional amplifiers may cause untimely clipping and a low transient response. The absence of such circuits assures a low T.I.M. effect, an excellent transient response and a perfect sound quality.

• RCA INPUT SENSITIVITY The new amp has a 500mVsensitivity for ideal coupling with MACROM sources and, however, it is possible to regulate the sensitivity from 100mV to 2V to facilitate coupling with any other source present on the market.

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

• THREEFOLD PROTECTION Your unit is provided with three different protection devices, as befits all high-end products. 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. 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.

• CAPACITIVE/INDUCTIVE POWER SUPPLY FILTER This filter reduces radio frequency interferences (RFI) and cuts off system noises (i.e. the whine of the alternator).

• MOS-FET Power Supply The 42.15/42.17 's great power is obtained by means of a special C-Mos-Fet supply unit which offers constant efficiency and requires low electrical input. The results are excellent performances, a linear and wide frequency response with high dynamics.

CONTROLS AND INDICATORS (Fig. 2, page 4) ➀ ON/OFF indicator ➁ Stereo or Mono input signal connector ➂ Stereo or Mono input signal selector √ Input gain control ➄ Speaker output connector board ≈ Fuse ∆ Power supply connector board INSTALLATION INSTALLATION (Fig. 1, page 3) Due to the high output power of the amplifier a great amount of heat is generated when the unit is in use. It is therefore necessary to install the unit in a position with good air circulation otherwise the amp will enter the protection mode. The best place to install the amplifier is in the trunk; avoid covering the amp.

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 fit the four tapping screws in.

NOTE: Connect the ground lead to a screw already fixed to the metallic chassis of the car (indicated by * ) in order to ensure a good ground contact.MACROM INGLESE 42.15 - 42.17 17 FEBBRAIO 199310 CONNECTIONS CONNECTIONS ( Fig. 3 Pag. 4 ) 1 Positive output terminal for left speaker or positive output terminal if used in MONO 2 Negative output terminal for left speaker 3 Positive output terminal for right speaker 4 Negative output terminal for right speaker or negitive output terminal if used in MONO 5 RCA-type input connector, left channel or mono 6 RCA-type input connector, right channel 7 20/25 Ampere fuse 8 Feed terminal + 12 V to the battery Connect this terminal directly to a positive (+) terminal of the battery by means of a lead responding to the amplifiers power requirements. 9 Terminal for the connection of the negative ground lead 10 Terminal for REMOTE switch-on

1. Battery lead . Connect this terminal (+BAT)➇ directly to the battery cable of the car, by using

an adequately sectioned cable (yelow). 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 supplied) as near as possible to the car‘s battery. This connection is to be carried out last.

2. REMOTE switch-on lead (blue). Connect this lead to the remote switch-on lead or connect the

control lead of the power antenna coming from the head unit to the REMOTE terminal ➉. NOTE: If 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 outlet for a power antenna, a quick-break lever switch (SPST) should be installed between the power source (+12 V) and the remote switch- on lead and connected to the REMOTE ➉ terminal so as to allow the manual activation of the amplifier.

3. Ground lead . Secure the ground lead to a clean spot on the car chassis and to the GND terminal

➈. Make sure that there is electric continuity between this spot and the negative terminal of the battery. Use the shortest possible ground cable and if more than one amp should be used, connect the relative ground to one sole point.

4. FUSE. In case of fuse replacement be sure to use fuses of the same amperage.

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

5. SPEAKER OUTLET TERMINALS. Be sure to keep the right polarity and phase in connecting

the speakers. This includes the control of the right polarity, positive (+) and negative (-). NOTE: Avoid any contact between stripped wires and the ground lead.

6. RCA INPUT CONNECTORS. The line output leads of your head unit should be connected to

the RCA input connectors, respectively RCA right ≈ and RCA left ➄ , by means of a RCA extension cable ( e.g. 90.05-90.10-90.25-90.50 by MACROM). Be sure to respect the right channel designation: left (white) and right (red).

10MACROM INGLESE 42.15 - 42.17 17 FEBBRAIO 199311

ADJUSTMENTS AND SWITCHES

a) STEREO MODE. Select the "ST" (mid) position when the amplifier is used as a 2-channel stereo system. Note:Even in this case the connection is possible L + R -. b) LEFT MODE "L - MONO". Select the "L - Mono" position when the amplifier is used for only one channel of the stereo system or for one bridged channel. Note: Connect the leads coming from one speaker to the terminals (L+ R-) in order to obtain a BTL-connection. In case stereo output is requested, connect a second 42.15 / 42.17 in the same way to the other speaker.

INPUT GAIN ADJUSTMENT CONTROL

In the mid position an input sensitivity of 500 mV is selected corresponding to the preamplified outputs of MACROM products. If 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) Adjust the volume control of your head unit to 3/4 of a turn from the maximum output level. b) Turn the input control by means of a screwdriver and adjust the input gain from 0.1 V to 2 V to the maximum sound level where no distortion occurs. c) L + R MODE. Select the "L+R" position when the amplifier is used for a subwoofer system using the right and left channels. Thus, the two inputs are blended into one mono output signal divided between 2 channels or, one double power channel if the Sub Woofer is connected to the central channel L + R .

Due to continuing improvement, the features and the design are subject to change without notice.

MONO Output Low -Pass Output High -Pass One channel configuration Electronic Crossover