• SYSTEM CHART / SYSTEM-DIAGRAMM / EXEMPLES DE SYSTEME / DIAGRAMMA DI SISTEMA /
DIAGRAMA DEL SISTEMA ................................................................................................................................................... 5-6
CONTROLS AND INDICATORS .................................................................................................................................................... 9
REGULATION AND SWITCH ..................................................................................................................................................... 11
TECHNICAL DATA ...................................................................................................................................................................... 12
STEUERUNGEN UND ANZEIGEN ............................................................................................................................................... 15
EINSTELLUNGEN UND SCHALTUNG ........................................................................................................................................ 17
CONTROLES ET INDICATEURS ................................................................................................................................................. 21
REGAGES ET COMMUTATEUR ..................................................................................................................................................23
CONTROLLI ED INDICATORI ..................................................................................................................................................... 27
REGOLAZIONI ED INTERRUTTORE ...........................................................................................................................................29
DATI TECNICI .............................................................................................................................................................................. 30
CONTROLES E INDICATORES ................................................................................................................................................... 33
REGULACIONES E INTERRIPTORES ........................................................................................................................................ 35
DATOS TECNICOS ...................................................................................................................................................................... 36
2
CONTROLS AND INDICATORS / BEDIENUNGSELEMENTE UND ANZEIGEN
COMMANDES ET INDICATEURS / COMANDI ED INDICATORI / CONTROLES E INDICATORES
Fig. 2./ Abb. 2.
1
ChecK Control
Power Amplifier
Fig. 3./ Abb. 3.
2
Input
3 4567
L(mono) ST L+R
L
R
Gai n Contr ol
0,5V
2V 0,1V
Br idged
+
-
L
++
-
Fuse
-
R
20A
+ Batt GND Remo
CONNECTIONS / ANSCHLUSSE / CONNEXIONS
COLLEGAMENTI / CONEXIONES
5
61234789 10
Input
L(mono) ST L+R
L
R
Gai n Contr ol
0,5V
2V 0,1V
Br idged
+
-
L
++
-
Fuse
20A
+ Batt GNDRemot
-
R
te
e
4
SYSTEM DIAGRAM / SYSTEM-DIAGRAMM / EXEMPLES DE SYSTEME
DIAGRAMMA DI SISTEMA / DIAGRAMA DEL SISTEMA
3-CHANNEL CONFIGURATION
Left channel
Right channel
2-CHANNEL CONFIGURATION
Left channel
Right channel
Mono
LeftRight
LeftRight
1-CHANNEL CONFIGURATION
Left channel
Note: For the other channel
another amplifier must to be
used in same way.
Mono
5
SYSTEM CHART / SYSTEM-DIAGRAMM / EXEMPLES DE SYSTEME
DIAGRAMMA DI SISTEMA / DIAGRAMA DEL SISTEMA
Two channel configuration
Audio Signal
57.00
59.10
59.16
LEFTRIGHT
+
+
-
+
-
-
Power Amplifier
Three channel passive configuration
57.00
95.8395.83
59.10
59.16
42.24 - 42.26
Audio Signal
95.8395.83
57.00
59.10
59.16
57.00
59.10
59.16
LEFTRIGHT
+
+
-
+
MONO
Power Amplifier
42.24 - 42.26
-
-
Coil 5mH
59.25
59.25
38
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 42.24/42.26 we realize that this is also your concern.
This unit offers 60/80 Watt max. per channel at 4 Ohm or 125/156 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 42.24/42.26
Please report any problem to your 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 42.24/42.26 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.
7
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) 60/80 Watts for each one of the two channels
b) 60/80 Watts for two stereo channels, and 125/156 Watts mono
c) 125/156 Watts for one mono channel
• INPUT MODE SELECTOR
This switch allows the user to specify the input signal to the amplifier.
a) STEREO MODE
b) LEFT MODE (L - MONO)
c) LEFT + RIGHT MODE (L+R)
• END STAGE WITH DISCRETE COMPONENTS (TRANSISTORS)
• HIGH PERFORMANCES, LOW NOISE LEVEL, PASSIVE AND ACTIVE COMPONENTS
• 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.
• ON/OFF INDICATOR
• 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).
8
FEATURES
• MOS-FET Power Supply
The 42.24/42.26 '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.
• GOLD-PLATED RCA INPUT CONNECTIONS
• PROFESSIONAL GOLD-PLATED SCREW-TYPE SUPPLY TERMINALS
4 or 2 Ohm for stereo operation, 4 Ohm if mono-bridged
CONTROLS AND INDICATORS
CONTROLS AND INDICATORS (Fig. 2, page 4)
1 ON/OFF indicator
2 Stereo or Mono input signal connector
3 Stereo or Mono input signal selector
4 Input gain control
5 Speaker output connector board
6 Fuse
7 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
screws provided.
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.
9
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 switchon 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).
10
ADJUSTMENTS AND SWITCHES
GAIN
CONTROL
0.5V
0.1V2 V
INPUT SELECTOR SWITCH
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 42.24 / 42.26 in
the same way to the other speaker.
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 .
INPUT GAIN ADJUSTMENT CONTROL
In the mid position an input sensitivity of 500 mV is selected
corresponding to the preamplified outputs of MACROM products.
L (MONO) ST L+R
L (MONO) ST L+R
L (MONO) ST L+R
0.5V
0.1V2 V
GAIN
CONTROL
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.
11
42.24 STEREO Power Output
TECHNICAL DATA
Maximum power ....................................................................... 60Wx2
Nominal RMS 4
Nominal RMS 2 Ohm, 20 Hz to 20 kHz at 0,05% THD ............ 75Wx2
BRIDGED Power Output
Maximum power, 4 Ohm, 1 kHz ............................................... 125W
42.26 STEREO Power Output
Maximum power ....................................................................... 80Wx2
Nominal RMS 4 Ohm, 20 Hz to 20 kHz at 0,05% THD ............ 65Wx2
Nominal RMS 2 Ohm, 20 Hz to 20 kHz at 0,05% THD ............ 80Wx2
BRIDGED Power Output
Maximum power, 4 Ohm, 1 kHz ............................................... 156W
Frequency response +0, -1dB .................................................. 10-50,000 Hz
S/N (signal to noise ratio) INFA-weighted ................................ 105 dB
Input sensitivity/Impedance
(for nominal power output)
Control in mid position ........................................................ 500 mV/10k Ohm
Variable control .................................................................. 100-2,000mV/10k Ohm
Speaker impedance .................................................................. 4 or 2 Ohm (stereo)
Power supply (negative ground) 14.0V DC (11-16 V permissible)
42.26...................................................................................1.8 kg
Ohm, 20 Hz to 20 kHz at 0,05% THD ............ 45Wx2
4 Ohm (bridged, mono)
kg
Chassis size
42.24...................................................................................217(L)x50(H)x150(P) mm
42.26...................................................................................217(L)x50(H)x190(P) mm
Due to continuing improvement, the features and the design are subject to change without notice.
12
EINFÜHRUNG
Für uns von MACROM ist die Soundqualität eines unserer Hauptziele. Die Tatsache, daß Sie sich
für den Digital-Ready Verstärker 42.15/42.17 von MACROM entschieden haben, bedeutet, daß Sie
ebenso denken.
Ihr Verstärker hat eine Leistung von 70/100 Watt MAX pro Kanal bei 4 Ohm oder von 150/200 Watt
max. mono-gebridged, mit einem sauberen, stabilen Klang. Diese Bedienungsanleitung soll Sie
dabei unterstützen, die außergewöhnlichen Leistungen und alle technologischen Eigenschaften
Ihres neuen Leistungsverstärkers aufs Beste zu nutzen.
Wir empfehlen Ihnen, diese Bedienungsanleitung sorgfältig durchzulesen, um sich mit den
einzelnen Bedienungselementen und Funktionen des 42.15/42.17 vertraut zu machen. Wenden
Sie sich für jedes Problem vertrauensvoll an Ihren MACROM-Vertragshändler.
VORSICHTSMASSNAHMEN
1. Jeder falsche Anschluß der Kabel kann zu Beschädigungen des Geräts führen. Lesen Sie
aufmerksam die vorliegenden Anleitungen für den Geräteanschluß.
2. Schließen Sie das Batteriekabel als letztes an den Batteriepol (+) an, nachdem alle anderen
Verbindungen vollständig ausgeführt und kontrolliert worden sind.
3. Aufgrund der hohen Leistung des Verstärkers 42.15/42.17 müssen alle Verbindungen sauber
und fest sein, um Beschädigungen zu vermeiden.
4. Installieren Sie den Verstärker in einer Position mit ausreichender Luftzirkulation, wo die Wärme
gut abgestrahlt werden kann.
5. Sollte das Auswechseln von Sicherungen erforderlich sein, so vergewissere man sich, daß eine
Sicherung mit derselben Amperezahl verwendet wird.
Die Verwendung von Sicherungen mit falscher Amperezahl kann zu schweren Beschädigungen
der Verstärkerteile führen.
Sollten die Sicherungen mehr als einmal durchbrennen, so muß man die elektrischen Anschlüsse
auf Kurzschluß prüfen. Den Spannungsregler des Fahrzeuges ebenfalls überprüfen lassen.
Versuchen Sie auf keinen Fall, das Gerät selbst zu reparieren. Wenden Sie sich an Ihren
MACROM-Händler oder an eine MACROM-Dienststelle.
6. Vor dem Einschalten des Gerätes sicherstellen, daß die Temperatur im Fahrzeugraum
zwischen -10° C und +60° C liegt, um die besten Betriebsbedingungen zu gewährleisten. Bei
großer Hitze besonders gut auf ausreichende Luftzirkulation im Fahrzeug achten, damit kein
Wärmestau in dem Gerät auftritt.
13
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