Maxxsonics Q4.150 User Manual

Installation Manual

Congratulations! By purchasing an amplifier from MB Quart, you have decided on a product of the highest technical quality. MB Quart wishes you great enjoyment with your amplifier. Should you have any questions about this system or other MB Quart products, please email us at info@maxxsonics.com

System Design

The success of any car stereo system relies on several factors, such as the system design, execution of the installation, and system setup. Please remember that any system is only as good as its weakest link. Please remember that higher power systems are not necessarily useful purely for high sound pressure levels, but also to establish a headroom capability, to reproduce musical peaks cleanly without distortion.

Lower power amplifiers will clip earlier than their more powerful cousins, and cause loudspeaker failure when overdriven, due to the harmonics generated by a clipped signal, thus overheating voice coils.

Amplifiers should be mounted with the fins running horizontally for best convection cooling, to minimize overheating. Purchase the best quality RCA cables you can afford, for reliability and less engine noise interference in the audio system.

It is highly recommended that the amplifier be mounted to a board of MDF or other solid structure using the 4 mounting screws provided. Avoid mounting the amplifier to metal as this can introduce noise and other unwanted issues. When mounting the amplifier, ensure that it is mounted HORIZONTALLY, as shown in the diagram above, for optimal heat dissipation. Mounting amplifiers to speaker enclosures is not recommended as this can cause damage to the amplifier components. When choosing a location for mounting the amplifier, ensure that you check for clearance from wires, gas tank, electrical devices and brake lines etc.

WOOD

CLIP INDICATOR

AMBER-

SOFT CLIP

GREEN-

PRE CLIP

RED-

PRE CLIP

RED-

HARD CLIP

LEVEL

0.2V 9V

0.2V

BASS BOOST

0dB

12dB

0dB

12dB

BASS FREQUENCY MULTIPLIER FREQUENCY

30Hz

80Hz

X15 X1

HIGH PASS

FILTER SLOPE

6dB 12dB

15Hz

1KHz

CHANNELS 1&2

CHANNELS 3&4

HIGH PASS

LOW PASS

(x1) 20Hz 300Hz

40Hz

4.5KHz

(x15) 300Hz 4.5KHz

CROSSOVER

LP-BP LP-BP HP-FULL DUPE HP-FULL

MONO STEREO (3&4)

INPUT MODE

PROTECT

POWER

4CH 2CH

Q4.80 / Q4.150 / Q1.1500D

Index

General Instructions

Features

Q4.80 / Q4.150 4-Channel Amplifiers Q1.1500D Mono Amplifier

Settings for Best Performance

1 WARRANTY

4-5

6-7

Trouble Shooting

Technical Data

Check out our videos of new products,

events and technical tutorials at

www.youtube.com/maxxsonicsusainc

WARRANTY

General Instructions

General:

Run the wiring so that RCA cables are at least 18“ away from power and speaker cables. Keep RCA cables away from electrical devices in the vehicle that can cause electrical noise, such as electric fuel pumps, emission control modules and other on-board electronic modules.

Power and ground connections:(See table below) Use a sufficient gauge power cable and ground cable using the chart below as reference to what size wire you require. Q series amplifiers require at least 4 gauge power wire. In a multi amplifier system, add the total value of the manufacture recommended fusing to get your total system amperage. Some applications may require multiple runs of power wire to meet the system requirements. In multi amplifier systems it is advisable to mount a large enough fuse right at the battery, and run one or multiple +12 volt power cables to a fused distribution block near the amplifiers. It is then a simple matter to connect the +12 volt terminal of each amplifier to the distribution block. During this process, please ensure that the main power fuse is removed to avoid shorting the electrical system. The main fuse must be within 12” of the vehicles battery.

Ground each amplifier with as short a ground lead as possible directly to the vehicle chassis using at least 4 gauge wire or equivalent to the size of the amplifiers’ power wire. Use a ground distribution block, if you wish, but it is extremely important to keep the main ground lead from this distribution block to the chassis as short as possible , not more than 12“. The ground connection integrity to the chassis is very important, and the best way to achieve a good, solid electrical and mechanical contact is to use a large round crimp lug, crimped and soldered to the ground cable. The next step is to scrape the paint off the vehicle chassis , slightly larger than the ground lug, at the connection point. Drill a clearance hole in the chassis, the same size as the lug hole, and use a bolt, spring washer and nut to securely fasten the ground lug. Use petroleum jelly to coat the bolt/lug connection, to prevent oxidization with time.

TIP: Use the same approach when installing head units, equalizers or any audio equipment for that matter - run short individual grounds from each piece directly to the vehicle chassis, to minimize ground loops and system noise. All power, ground and speaker connections should be crimped and soldered for reliability. Make sure that none of the cable insulation can chafe against exposed metal in the vehicle, causing short circuits to the chassis.

Safe connection sequence: After all cables are run, connect speaker wires to the speakers and amplifiers, then run and plug in RCA cables. Next, connect all power, ground, and remote turn on leads. Now connect all +12 volt cables to the amplifier/s and distribution blocks and fuse holders. Finally, connect the main +12 volt cable to the battery, with the main fuse removed, and we are almost ready to power up the system.

Power up the system:

The following procedure may seem like overkill, but there is nothing more frustrating when turning on a system for the first time, and it does not work properly immediately. First, make sure the head unit is off, and turn all level controls to minimum (counterclockwise), including the head unit volume control. Set all equalizers to 0 dB (no boost), and all crossover frequency controls at approximate frequencies, as recommended by the loudspeaker manufacturer. Set all input selector and crossover switches as required for the application. Remove all amplifier fuses, and insert the main fuse at the battery. If the fuse does not blow, you can insert the fuse in one of the amplifiers, and we are ready to turn on the system. Turn the head unit on, insert a CD, or select a radio station, and increase the head unit volume control. If the system sounds fine, turn off the head unit, and install fuses in the remaining amplifiers, one by one, till the complete system is powered up and functioning properly.

WIRE LENGTH

SYSTEM AMPERAGE

7-10 ft. 10-13 ft. 13-16 ft.

16-19 ft. 19-22 ft. 22-28 ft.

35-50

50-65

68-85

85-105

105-125

125-150

WIRE GAUGE

Q4.80 / Q4.150 / Q1.1500D

Features

Q4.80 Q4.150

CLIP INDICATOR

AMBER-

SOFT CLIP

GREENPRE CLIP

HARD CLIP

LEVEL

BASS BOOST

0dB

MULTIPLIER

FREQUENCY

X15 X1

FILTER SLOPE

6dB 12dB

CHANNELS 1&2

HIGH PASS

(x1) 20Hz 300Hz

(x15) 300Hz 4.5KHz

CROSSOVER

DUPE HP-FULL (3&4)

PROTECT

POWER

RED-

0.2V

12dB

CLIP INDICATOR

AMBER-

SOFT CLIP

GREEN-

PRE CLIP

RED-

HARD CLIP

LEVEL

0.2V

BASS BOOST

0dB

BASS FREQUENCY

12dB

30Hz

80Hz

HIGH PASS

15Hz

1KHz

CHANNELS 3&4

LOW PASS

40Hz

4.5KHz

CROSSOVER

LP-BP LP-BP HP-FULL MONO STEREO

INPUT MODE

4CH 2CH

- CLIP INDICATOR:

- GREEN = Pre-Clip

- AMBER = Soft Clip

- RED = Hard Clip

- LEVEL: Variable sensitivity from 0.2V to 9V

- BASS BOOST: Variable bass boost from 0dB to 12dB

- BASS FREQUENCY: Frequency to be boosted, variable from 30Hz to 80Hz

- HIGH PASS:

- CH3&4:

Variable HIGH PASS filter from 15Hz to 1KHz

- CH1&2: Variable HIGH PASS filter from 20Hz to 300Hz

- MULTIPLIER FREQUENCY: Available for CH1&2 only and variable selector

for x15 or x1 the selected HIGH PASS value

- FILTER SLOPE: Roll off for HIGH PASS on CH1&2, selectable at 6dB or 12dB

- CROSSOVER:

- CH3&4:

- LP-BP MONO: Selected when bridging CH3&4 on subwoofers

- LP-BP STEREO: Selected when running CH3&4 in stereo on subwoofers

- HP-FULL: Selected when running CH3&4 in stereo for full range speakers

- CH1&2:

- DUPE (3&4): Bypasses all variables on CH1&2 and duplicates settings from CH3&4

- HP-FULL:

Selected when running CH3&4 in stereo for full range speakers

- PROTECT: Red LED which indicates PROTECTION

- POWER: Green LED which indicates the amplifier is “ON”

- INPUT MODE:

- 4CH: Selected when two sets of RCA’s are being connected to CH1&2 and CH3&4

- 2CH: Selected when only one set of RCA’s are being connected to CH1&2. The amp will automatically provide signal to CH3&4 but there will be no FADE from front to rear on your headunit controls.

Q1.1500D

PROTECT

POWER

LEVEL

PHASE SHIFT

CLIP INDICATOR

CONTROL

0.2V

180

PARAMETRIC BASS EQ

BASS BOOST

0dB

12dB

BANDWIDTH

WIDE

BASS FREQUENCY

NARROW

PRE-AMP X-OVER

GREEN-PRE CLIP AMBER-SOFT CLIP

RED-HARD CLIP

Q-LINK

INPUT OUTPUT SLAVE MASTER

SUBSONIC

15Hz

35Hz

LOW PASS

35Hz

200Hz

30Hz

80Hz

- PROTECT: Red LED which indicates PROTECTION

- POWER: Green LED which indicates the amplifier is “ON”

- CLIP INDICATOR:

- GREEN = Pre-Clip

- AMBER = Soft Clip

- RED = Hard Clip

- LEVEL: Variable sensitivity from 0.2V to 9V

- Q-LINK: Allows linking of two Q1.1500D amplifiers to produce 3KW rms @ 2-Ohms

- INPUT SLAVE: Selected when amplifier is being linked as SLAVE and receiving signal from the MASTER amplifier. When in INPUT SLAVE position all other adjustments are bypassed

- OUTPUT MASTER: Selected when amplifier is being linked as MASTER and providing signal to the SLAVE amplifier. This amplifiers’ adjustments now control both amps

- PHASE SHIFT: Adjustable time alignment from 0 to 180 degrees

- SUBSONIC: Variable from 15Hz to 35Hz

- LOW PASS: Variable from 35Hz to 200Hz

- BASS BOOST: Variable bass boost from 0dB to 12dB

- BASS FREQUENCY: Frequency to be boosted, variable from 30Hz to 80Hz

- BANDWIDTH: Range of frequencies to be boosted

- Variable from WIDE to NARROW. WIDE includes less frequencies to be boosted while NARROW includes more frequencies to be boosted above and below the selected frequency

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