SP2.050 - Car stereo Macrom - Free user manual and instructions

Product Type	2-channel car amplifier
Brand	Macrom
Model	SP2.050
RMS Power (12.5 V, 2 Ohm, <0.5% THD)	2 x 80 W
RMS Power (12.5 V, 4 Ohm mono, <0.5% THD)	1 x 160 W
Dynamic Power (14.4 V, 4 Ohm, <0.08% THD)	2 x 60 W
Dynamic Power (14.4 V, 2 Ohm, <0.5% THD)	2 x 100 W
Dynamic Power (14.4 V, 4 Ohm mono, <0.5% THD)	1 x 200 W
Frequency Response (+/- 1 dB)	10 - 50,000 Hz
Total Harmonic Distortion	0.08%
Signal-to-Noise Ratio (IHF A weighted)	>100 dB
Input Sensitivity	200 - 4000 mV / 22 kOhm
Minimum Speaker Impedance (Stereo)	2 Ohm
Minimum Speaker Impedance (Bridged Mono)	4 Ohm
Filters	Adjustable high-pass and low-pass (30-600 Hz)
Cutoff Slope	12 dB/Octave
Power Supply	14.4 V DC (11-16 V allowable)
Dimensions (W x H x D)	212 x 65 x 225 mm
Weight	2.4 kg
Input Connectors	Gold-plated RCA
Speaker Output Connectors	Gold-plated screw terminals
Protection	Overheating, overload, short circuit
Status Indicator	Check Control LED (white/green/red)
Fuse	Yes, replace with same rating
Remote Turn-On (Remote-On)	Yes

Frequently Asked Questions - SP2.050 Macrom

How to adjust the input sensitivity (gain)?

Set the volume of your car radio to about 3/4 of the maximum output, then turn the input gain control of the amplifier until you obtain maximum sound level without distortion.

How to configure the amplifier in bridged (mono) mode?

Use the Stereo/Mono selector in Mono position. The input must be connected to the Left (mono) channel. Minimum impedance in bridged mono is 4 Ohm.

What does the red LED indicator mean?

The red LED indicates that the amplifier is in protection mode. Possible causes are: overheating, overload (too low impedance), or short circuit at the output. Check connections and temperature.

What is the minimum speaker impedance in stereo?

In stereo mode, the minimum impedance per channel is 2 Ohm.

How to connect the power supply?

Connect +BATT directly to the battery via a fuse, GND to a clean chassis point (never to battery negative), and REMOTE-ON to the car radio's remote wire.

Can I use this amplifier with 1 Ohm speakers?

No, the minimum impedance is 2 Ohm in stereo and 4 Ohm in mono. Lower impedance will trigger protection due to overload.

How to clean the amplifier?

Disconnect the power. Clean the exterior with a soft, dry cloth. Do not use chemical or abrasive products.

What type of fuse should I use?

Always replace the fuse with a model of the same amperage. Using a different fuse may seriously damage the unit.

The amplifier does not turn on, what to do?

Check the REMOTE-ON connection (must receive a signal from the car radio), battery voltage, and fuse condition. The LED should turn green in normal operation.

Can I install the amplifier myself?

It is recommended to have the unit installed by an authorized MACROM dealer due to the complexity of connections. Improper installation may damage the unit.

USER MANUAL SP2.050 Macrom

6 dB/Octave High and low Pass Filter

TABLE OF COMPONENT VALUES

Frequency 2	Ohm 4 Ohm 8 Ohm
Hz L	1 C1	L1 C1	1 C1
50 6	.4 mH	1600 μF	12.8 mH 800	μF 25.4 mH	400 μF
80 4	.1 mH	1000 μF	8.2 mH 500	μF 16 mH 250	μF
100 3	.1 mH	800 μF	6.2 mH 400	μF 12 mH 200	μF
130 2	.4 mH	600 μF	4.7 mH 300	μF 10 mH 150	μF
200 1	.6 mH	400 μF	3.3 mH 200	μF 6.8 mH 100	μF
400 0	.8 mH	200 μF	1.6 mH 100	μF 3.3 mH 50	μF
600 0	.5 mH	136 μF	1.0 mH 68 μF	2.0 mH 33 μF
800 0	.41 mH	100 μF	0.82 mH 50	μF 1.6 mH 25	μF
1000 0	.31 mH	78 μF	0.62 mH 39	μF 1.2 mH 20	μF
1200 0	.25 mH	66 μF	0.51 mH 33	μF 1.0 mH 16	μF
1800 0	.16 mH	44 μF	0.33 mH 22	μF 0.68 mH 10	μF
4000 0	.08 mH	20 μF	0.16 mH 10	μF 0.33 mH 5	μF
5000 0	.06 mH	16 μF	0.12 mH 8 μF	0.25 mH 4 μF
6000 0	.05 mH	14 μF	0.10 mH 6.8	μF 0.20 mH 3.3	μF
7000 0	.045 mH	11 μF	0.09 mH 6	μF 0.18 mH 3	0 μF
8000 0	.04 mH	10 μF	0.08 mH 5 μF	0.19 mH 2.2	μF
10000 0	.03 mH	8 μF	0.06 mH 4 μF	0.13 mH 2 μF

12 dB/Octave High and low Pass Filter

Frequency 2 Ohm 4 Ohm 8 Ohm
Hz	L1 C1	L1 C1	C1
50	9 mH	1100 μF	18 mH	550 μF	36 mH	270 μF
80	5.5 mH	680 μF	11 mH	330 μF	22 mH	180 μF
100	4.7 mH	560 μF	9.1 mH	270 μF	18 mH	150 μF
130	3.3 mH	400 μF	6.8 mH	200 μF	15 mH	100 μF
200	2.2 mH	300 μF	4.7 mH	150 μF	9.1 mH	75 μF
400	1.1 mH	150 μF	2.2 mH	68 μF	4.7 mH	33 μF
600	0.75 mH	100 μF	1.5 mH	47 μF	3.0 mH	27 μF
800	0.50 mH	68 μF	1.0 mH	33 μF	2.0 mH	15 μF
1000	0.47 mH	50 μF	0.91 mH	27 μF	1.8 mH	13 μF
1200	0.33 mH	44 μF	0.75 mH	22 μF	1.5 mH	11 μF
1800	0.27 mH	30 μF	0.50 mH	15 μF	1.0 mH	6.8 μF
4000	0.10 mH	15 μF	0.22 mH	6.8 μF	0.47 mH	3.3 μF
5000	0.09 mH	11 μF	0.18 mH	5 μF	0.36 mH	3 μF
6000	0.075 mH	10 μF	0.15 mH	4.7 μF	0.33 mH	2.2 μF
7000	0.065 mH	8 μF	0.13 mH	4 μF	0.26 mH	2 μF
8000	0.06 mH	7 μF	0.11 mH	3.3 μF	0.23 mH	2 μF
10000	0.045 mH	6 μF	0.082 mH	3 μF	0.18 mH	1.2 μF

INTRODUCTION

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

• Input mode switch
• 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 input connectors: To connect the Pre output leads of the main unit to the amplifier input. These inputs control the final stages.

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

To adjust sensitivity, proceed as follows:

a)Set the volume control of your unit to 3/4 of its maximum output

b) Adjust the amplifier input gain controls until the maximum possible acoustic pressure has been obtained without any distortion.

3 • Stereo/Mono switch: changes the output mode of the amplifier between Stereo and Mono. If Mono is selected, the corresponding Left (mono) input is used to operate the amplifier.

4 - 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 outputs.

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

1. Continuous adjustment/control of the 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 .

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

7 · 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.

8 · + 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.

9 • 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.

10 · 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.

11 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 202 250 W

RMS Power at (12.5 Volts DC)

at 1kHz < 0.08% THD at 4 Ohm 2 x 55 W

at 1kHz < 0.5% THD at 2 Ohm 2 x 80 W

at 1kHz < 0.5% THD Mono at 4 Ohm 1 x 160 W

Dynamic Power at (14.4 Volts DC)

at 1kHz < 0.08% THD at 4 Ohm 2 x 60 W

at 1kHz < 0.5% THD at 2 Ohm 2 x 100 W

at 1kHz < 0.5% THD Mono at 4 Ohm 1 x 200 W

High pass control, (30-600) Hz

Low pass control, (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 >100 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

2,4 kgrs

Dimensions

212(i) × 65(h)× 225(p)mm

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

EINFUHRUNG

a 1 kHz < 0.08% THD a 4 Ohm 2 x 55 W

a 1 kHz < 0.08% THD a 4 ohms 2 x 55 W

a 1 kHz<0.5% THD a 2 ohms 2 x 80 W

a 1 kHz<0.5% THD Mono a 4 ohms 1 x 160 W

Potencia Dinamica a (14,4 Volts DC)

a 1 kHz<0.08% THD a 4 ohms 2 × 60 W

a 1 kHz<0.5% THD a 2 ohms 2 x 100 W

a 1 kHz < 0.5% THD Mono a 4 ohms 1 x 200W

Pasa alto (30-600) Hz