Raveland 650 Bass Machine, Bass Machine 650 Operation And Connection Manual

Operation and

Connection manual

Raveland Bass Machine 650

Features

- 1 x 650 watts max. power output

- 4 ohms stable

- adjustable input sensivity

- adjustable Lowpass filter

- adjustable Bass Boost

- High Level input

- Thermal- / Short-/ Overloadprotection

- Automatically delayed power on by remote input

- Power on / Overload indicator

- LINE output to connect additional amplifier

- mute circuit preventing switch on noises

- HIGH EFFIENCY MOSFET power source

Technical Data

Max. power output 1 x 650 watts
Contineous power output at 4 ohms 1 x 250 watts R.M.S.
Impedancez speaker 4 - 8 ohms
Frequency response 10 - max. 250 Hz
Sensivity (LINE) INPUT 0,2 - 4 volts
Sensivity HIGH IN 3 - 8 volts
Impedance (LINE) INPUT 100 kohms
Impedance HIGH IN 47 ohms
Dimensions (WxHxD) 220 x 50 x 200 mm
Fuse 1 x 40 A

Car HiFi Set

Mounting and power connection of amplifier

Please mount and connect the amplifier very carefully! Please read first the safety notes very
carefully!

Please mount the amplier to a safety and solid base with screws using the 4 mounting holes
located at the sides of the amplifer.

Please connect the power input +12 V to the plus pole of the battery. An adequate fuse

must be inserted in the power cable (+) within a distance of 30 cm from the battery.

The fuse size is determined by all items connected to the battery (further amplifers etc.).

Operation elements and input signal connection

The XMA 650 is an 1 channel amplifier with high power output, adjustable lowpass filter and
adjustable BASS BOOST .

The XMA 650 is able to receive 2 Channels connected using a LINE INPUT. The signal is
transformed inside the amplifer to a 1 channel signal. Furthermore the 2 channel signal can be
passed through to an additional amplifer using the LINE OUTPUT. Optional the signal can be
received by the XMA 650 amplifer using a high level input (HIGH IN) connected to the speaker
outputs of a Headunit.

Level (GAIN), cut off frequency of lowpass filter (LPF, 40 - 250 Hz) and bass boost (BOOST, 0 -
+12 dB) can be adjusted. Please use the bass boost carefully. A boost of + 12 dB increases the
power output of the amplifer several times. This can lead to a clipping of the amplifer output
signal damaging possibly amplifer and speakers.

Connection of a speaker to the amplifier

The LINE input of the amplifier must be connected to the Line output of the headunit (radio). If
the headunit is not equipped with line outputs, as an alternative the high level input (HIGH IN) of
the amplifer can be connected to the speaker outputs of the headunit.

Please connect the GND terminal to the minus pole of the battery or to the bodywork of the car. A
directly connection to the minus pole of the battery is recommended.

Then the REMOTE terminal can be connected to the remote output of the headunit (radio). Using
this connection the amplifier will be switched on / off simultaneously with the headuint (radio).

GND REMOTE +12VGND REMOTE +12V

POWERPOWER SPEAKERSPEAKERINPUTINPUT OUTPUTOUTPUT

FUSE PROTECT POWERFUSE PROTECT POWER

- +- +

SUBWOOFERSUBWOOFER

--

++

RADIO/HEADUNITRADIO/HEADUNIT

VERSTÄRKER/

AMPLIFIER

VERSTÄRKER/

AMPLIFIER

INPUTINPUT OUTPUTOUTPUT

HIGH INHIGH IN

+ GND ++ GND +

LL LL

RR RR

GAINGAIN

BOOSTBOOST

LPFLPF

CAR STEREO SPEAKER OUTPUT R CH (+)CAR STEREO SPEAKER OUTPUT R CH (+)
CAR STEREO SPEAKER OUTPUT R CH ( - )CAR STEREO SPEAKER OUTPUT R CH ( - )
CAR STEREO GNDCAR STEREO GND
CAR STEREO SPEAKER OUTPUT L CH ( - )CAR STEREO SPEAKER OUTPUT L CH ( - )
CAR STEREO SPEAKER OUTPUT L CH (+)CAR STEREO SPEAKER OUTPUT L CH (+)

BATTERYBATTERY

GND REMOTE +12VGND REMOTE +12V

POWERPOWER SPEAKERSPEAKERINPUTINPUT OUTPUTOUTPUT

FUSE PROTECT POWERFUSE PROTECT POWER

- +- +

- +- +

RADIO/HEADUNITRADIO/HEADUNIT

The speaker (subwoofer) must be connected to the speaker terminal (plus to +, minus to )

Using

- .

the GAIN control the level can be adjusted to fit to the headunit or to another amplifier.

Attention! The impedanz of the speaker (subwoofer) must be 4 ohms or more!

The cut off frequenc of the speaker (subwoofer) can be adjusted using the lowpass filter control
(LPF). The cut off frequency should be adjusted in a way, that the complete audio system gives a
smooth and contineous sound without any gap or overplay (depp mal voice can be used to
check this). It is possible,that a connection of the speaker (subwoofer) with reverse polarization
will fit better to the other components of the audio system. This belongs to the subwoofer as well
as to the other components (front system) of the audio system.

Using the Bass Boost low frequencies can be increased selectively (center at 40 Hz). The BOOST
control can be used to adjust the level of the Bass Boost between 0 und + 12 dB.

Please use the Bass Boost carefully. An adjustment to + 12 dB increases the power
output of the amplifer several times. This can lead to a clipping of the amplifer output
signal possibly damaging amplifer and speakers.