Syn Power 4.050 - Car stereo Macrom - Free user manual and instructions

Product type	4-channel amplifier
Brand	Macrom
Model	Syn Power 4.050
Dimensions (W x H x D)	212 x 65 x 355 mm
Weight	3.9 kg
Power supply	14.4 V DC (11 - 16 V allowed)
RMS Power (at 4 Ω, THD < 0.08%)	4 x 45 W
Dynamic Power (at 4 Ω, THD < 0.08%)	4 x 60 W
Frequency Response	10 - 50,000 Hz (±1 dB)
Total Harmonic Distortion	0.08%
Signal-to-Noise Ratio	> 90 dB (IHF A-weighted)
Speaker Impedance (stereo min.)	2 Ω
Speaker Impedance (mono min.)	4 Ω
Input Sensitivity	200 mV - 4 V
High-Pass/Low-Pass Filters	Front and Rear, continuous adjustment 30-600 Hz, slope 12 dB/octave
Input Modes	4 channels or 2 channels (via selector)
Output Modes	4, 3 or 2 channels (via selector)
Built-in Protections	Overheating, overload, short circuit
Maintenance	Replace fuses with identical models; refer repairs to a MACROM authorized center
Operating Temperature	-10 °C to +60 °C
Input Connectors	Gold-plated RCA (Front and Rear)
Status Indicator	LED Check Control: white (off), green (on), red (protection)

Frequently Asked Questions - Syn Power 4.050 Macrom

How to connect the amplifier power supply?

Connect the +BATT wire directly to the positive battery terminal with an inline fuse. The GND wire must be connected to a clean ground point on the car chassis, never to the negative battery terminal. The REMOTE-ON connects to the head unit's remote wire or the power antenna.

What is the minimum speaker impedance?

In stereo, the minimum impedance is 2 ohms per channel. In bridged mono mode, it must be at least 4 ohms. Respect these limits to avoid protection mode.

How to configure the 4/2 channel input mode?

Use the 4CH/2CH selector: in 4CH mode, connect all four RCA inputs. In 2CH mode, connect only the Front inputs; the amplifier will distribute the signal to all four outputs.

What does the red light on the amplifier mean?

The red light indicates a protection state. This may be due to overheating, overload (impedance too low), or a short circuit at the output. Resolve the issue then turn the head unit off and on again.

How to adjust the high-pass or low-pass filter?

On each channel (Front and Rear), select the Flat, Low-Pass, or High-Pass mode with the corresponding selector. Then adjust the cutoff frequency (30 to 600 Hz) with the continuous potentiometer.

What is the role of the gain (sensitivity) adjustment?

The gain adjustment allows matching the amplifier's input sensitivity to that of the head unit, from 200 mV to 4 V. Turn it slowly until you achieve the desired level without distortion.

Can I use the amplifier with a single speaker?

Yes, in bridged mono mode (output selector on 2CH or 3CH for the rear channel). Make sure the speaker impedance is at least 4 ohms.

How to replace a fuse?

Turn off the power, then replace the fuse with one of the same amperage. Never use a fuse of a different rating, as this could damage the amplifier.

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

Check the REMOTE-ON connection (should receive 12V from the head unit), the fuses, and the battery voltage. The light should be green under normal operation.

What power output can I expect from this amplifier?

At RMS at 12.5 V: 4 x 45 W at 4 ohms, 4 x 80 W at 2 ohms, and up to 2 x 140 W bridged at 4 ohms. Dynamic values at 14.4 V are slightly higher.

USER MANUAL Syn Power 4.050 Macrom

Front/Rear a 1 kHz < 0.08% THD a 4 ohms 4 x 45 W

Front/Rear a 1 kHz<0.5% THD a 2 ohms 4 x 80 W

Front/Rear a 1 kHz<0.5% THD Mono a 4 ohms 2x140W

Potencia Dinamica a (14,4 Volts DC)

Front/Rear a 1 kHz<0.08% THD a 4 ohms 4x60W

Front/Rear a 1 kHz<0.5% THD a 2 ohms 4 x 90 W

Front/Rear a 1kHz < 0.5% THD Mono a 4 ohms 2× 180W

Pasa alto, Front y Rear (30-600)Hz

Macrom, who strive continually to achieve the ultimate in sound quality, have traditionally been a synonym for the very best in European sound and music reproduction. The fact that you have chosen this product means that you share our opinion. After reading this manual you will be in an even better position to appreciate all the advanced features in this new Amplifier. This Amplifier incorporates an exceptional set of technical features, and for this reason all signal sources, loudspeakers and interconnecting elements must also be of the very highest quality. We recommend the use of Macrom high quality main subassemblies, electronic crossovers, loudspeaker systems, connecting leads and accessories. Similarly, because integration of these products is an extremely complex task, we advise you to leave the installation of this amplifier to your authorised MACROM dealer.

This Amplifier has no commands or controls that can be adjusted by the user, so read this manual very carefully, to familiarise yourself with the special features and functions of your new MACROM product. If in any doubt, contact your authorised MACROM dealer.

PRECAUTIONS

1. Just one faulty connection could damage the unit, so read the connection instructions provided in this manual very carefully.
2. Connect the battery lead to the (+) battery terminal last of all, and only after having completed and checked all the other connections.
3. Take care to install the amplifier in a position where both good air circulation and heat dissipation are guaranteed.
4. The fuses must always be replaced with fuses of identical ampere rating in order to prevent serious damage to the components. You should also first have the voltage regulator of your car checked. Never attempt to repair the unit yourself. Entrust any necessary repairs to a MACROM distributor or your local MACROM service centre.
5. To ensure the highest possible performance from this unit, try to obtain a temperature of between -10^ and +60^ inside your car before switching on the amplifier.

FEATURES

• 4/2 channel input mode switch
• 4/3/2 channel output mode switch
• Front, flat, low-pass or high-pass filter switch
• Rear, flat, low-pass or high-pass filter switch
  Continuous frequency control
  Continuous sensitivity control
• Current feed with Mos-Fet
• " Check Control" status indicator
  R emote-controlled start and stop
  Gold-plated RCA input terminals
  Professional gold-plated screw-type terminals

CONTROLS AND INDICATORS

1 - RCA Front input connectors: To connect the Pre output leads of the main unit to the amplifier input. These inputs control the final stages of the FRONT section.

2 - Adjustment of the gain of the Front Input: Adjusts input sensitivity of amplifier, which can vary between 200mV and 4V .

3 - Front Crossover switch: selects the output mode of the amplifier by activating the Low-pass or High-pass filter.

a) Flat: the amplifier will reproduce the complete audio range in relation to the signal applied to the input.

b) Low-pass: activation of the low-pass filter, i.e. determination of the finishing-point of the low frequencies present at the Front outputs.

c) High-pass: activation of the low-pass filter, i.e. determination of the starting-point of the high frequencies present at the Front outputs.

1. Continuous adjustment/control of the Front Low-Pass or High-Pass frequencies: once the low-pass or high-pass filter is inserted, the crossover frequency can be adjusted in continuous mode between 30Hz and 600Hz .

5·4CH/2CH/ input mode switch: selects the input configuration of the amplifier in the following ways:

a) "4ch": requires connection of all four input channels, so that they can all function.

b) "2ch": If the main unit puts out two signals only, these must be connected to the Front input, to allow all four output channels to function.

Note: Sensitivity adjustments will, in any case, remain independent.

CONTROLS AND INDICATORS

6 - "4CH/3CH/2CH" Output mode switch: selects the output configuration of the amplifier in the following ways:

a) "4ch" configuration using 4 output channels: In this mode the amplifier can function with a double stereo system, front and rear.

b) "3ch" configuration using three output channels: In this mode the amplifier can function with a stereo system in Front and a "bridged" mono system in Rear.

c) "2ch" Configuration using 2 output channels: In this mode the amplifier can be used as a traditional 2-channel stereo amplifier with twice the normal power.

7 - Rear Crossover switch: select the output mode of the amplifier by activating the LowPass or High-Pass filter.

a) Flat: the amplifier will reproduce the entire audio range in relation to the signal applied at the input.

b) Low-Pass: activation of the low-pass filter, i.e. determination of the finishing-point of the low frequencies present at the Rear outputs.

c) High-pass: activation of the low-pass filter, i.e. determination of the starting-point of the high frequencies present at the Rear outputs.

1. Continuous adjustment of the Rear Low-Pass or High-Pass Frequencies: once the high-pass or low-pass filter is inserted, the crossover frequency can be adjusted between 30Hz and 600Hz in continuous mode.

1. Adjustment of the Rear Input gain: adjusts the input sensitivity of the amplifier, which varies from 200mV to 4V .

10 -Rear RCA input connectors: Connect the Pre output leads of your main unit to the amplifier input. These inputs will drive the final stages of the Rear section.

CONTROLS AND INDICATORS

1. Speaker connectors: Outputs for connecting the loudspeakers.

The amplifier allows the loudspeakers to be connected with a minimum impedance of 2 Ohm for a channel in stereo configuration, and with an impedance of 4 Ohm for a "bridged" mono connection.

If the 3 channel configuration is to be used, the total impedance should not exceed the minimum value of 2 Ohm.

Make sure that the polarity of the connection between the loudspeakers is correct. Do not allow inadequately insulated leads to come into contact with Ground, any metallic parts of the car, or with each other.

3-channel configuration 2-channel configuration 1-channel configuration

12 • Fuses: When replacing fuses, make sure that they are replaced with fuses of the same ampere rating. Use of the wrong type of fuse could seriously damage the components.

13 · + BATT connector: Connect the positive "+" of the battery directly, by means of a fuse located nearby, and use a lead having a sufficiently large cross-section to allow passage of the current. Do not connect this terminal to the car's own electrical circuit.

14 • REMOTE-ON connector: Connect this to the remote-on start-up output lead (remote starting switch) or to the automatic antenna wire running from the main unit. It will now be possible to turn the amplifier on and off from the main unit.

15 · GND connector: Attach this Ground connector, using a lead of adequate section, to a clean point on any metallic part of the car chassis, if possible to an already-installed screw. Never attach this clamp directly to the negative point of the battery, which could give rise to an unpleasant buzzing noise while the car is being driven.

16 - Check control indicator: This LED indicates the amplifier functioning status.

WHITE: The unit is switched off

GREEN: The amplifier is functioning perfectly

RED: the unit is in a state of protection.

The amplifier is equipped with three protection devices:

• Overheating: If errors have been made during installation, and the amplifier overheats, the unit will enter into a state of protection before any damage can occur. Once the temperature returns to normal and the errors have been rectified, the unit will automatically start to function normally once again.

• Overloading: If several loudspeakers have been connected to the amplifier and the total impedance drops below the 1 Ohm limit that it can handle, the amplifier goes into a state of protection. The main unit will have to be switched off and on again in order to restore the amplifier to normal functioning.

• Short circuit in an output: In the case of a short circuit in the loudspeaker outputs, the unit will go into a state of protection to avoid serious damage to the final transistors. Normal functioning will be restored when the short circuit has been dealt with and the main unit switched on again.

TECHNICAL DATA

Power IHF 202500W

RMS Power at (12.5 Volts DC)

Front/Rear at 1 kHz < 0.08% THD at 4 Ohm 4 x 45 W

Front/Rear at 1kHz < 0.5% THD at 2 Ohm 4 x 80 W

Front/Rear at 1 kHz < 0.5% THD Mono at 4 Ohm 2 x 140 W

Dynamic Power at (14.4 Volts DC)

Front/Rear at 1kHz < 0.08% THD at 4 Ohm 4 x 60 W

Front/Rear at 1kHz < 0.5% THD at 2 Ohm 4× 90~W

Front/Rear at 1kHz < 0.5% THD Mono at 4 Ohm 2 x 180 W

High pass, Front and Rear (30-600)Hz

Low pass, Front and Rear (30-600)Hz

Crossover slope 12 dB/Octave

Response in frequency +/- 1 dB 10 - 50.000 Hz

Total harmonic distortion 0.08%

Weighted IHF A Signal-Noise Ratio >90 dB

Input sensitivity - Impedance

200-4000 mV/22 kOhm

Loudspeaker impedances

Stereo

min. 2 Ohms

Mono

min. 4 Ohms

Power supply

14.4 V DC (11 - 16 V permissible)

Weight

3,9 kgs

Dimensions

212(i) × 65(h)× 355(d)mm

Due to the continual incorporation of improvements in this product, the characteristics and design may be subject to variation without prior notice.

EINFUHRUNG

Front/Rear @ 1 kHz < 0,08 % THD a 4 ohms 4 x 45 W

Front/Rear @ 1 kHz < 0,5 % THDa 2 ohms 4 x 80 W

Front/Rear @ 1 kHz < 0,5 % THD Mono a 4 ohms 2 x 140 W

Front/Rear @ 1 kHz < 0,08 % THD a 4 ohms 4 x 60 W

Front/Rear @ 1 kHz < 0,5 % THDa 2 ohms 4 x 90 W

Front/Rear @ 1 kHz < 0,5 % THD Mono a 4 ohms 2 x 180 W

Passa alto, Front e Rear (30-600)Hz

Passa basso, Front e Rear (30-600)Hz

Pendenza d'incrocio

12 dB/Octave