GR Bass GR 300 User manual

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USERS
MANUAL

User manual purpose

This user manual is dedicated to the use of the
bass amplifier GR 300+.
The manual includes the following information:
General information (technical data and packa­ging);
Description of the amplifier’s functions.

All the informations described on this user manual
are verified.
The manufacturer reserves the right to update or
modify their product without any notice.

PACKAGING AND STORAGE
Packaging

GR 300+ is packed in a special cardboard box.
The box contains the amplifier GR700+, power sup­ply cable and the user manual.

Trasport

Please handle the box with care. A specific position
during the transport is not required.

Storage

Please keep the amplifier in a dry and ventilated
place. Ideal storage conditions: Temperature within

-20C and 40C, Humidity 20% to 80%.

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Product disposal

Please follow the disposal instruction issued by
your local council.
In accordance with European Directive 2002/96 /
EC, all electrical and electronic products should be
disposed by specific collection facilities appointed
by the government or the local authorities.

DECLARATION OF CONFORMITY

The product complies with the following European
directive:
2006/95 / EC - Electrical Safety
2004/108 / EC - Electromagnetic Compatibility
2011/65 / EU - Limited use of certain hazardous
substances in electrical and electronic equipment
A full copy of the declaration of conformity is avai­lable from the manufacturer.
The manufacturer is not responsible of any dama­ge due to an improper use of the product.

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Dati tecnici

MAIN FEATURES

• 2 Speakon/jack output

• XLR DI Out

• Tuner Output

• Headphone output

• Send return

• Aux in

• 9V DC output, 250mA

• Gain

• Bass, middle and treble

• Middle frequencies switch

• Subsonic filter

• DI/Headphone volume

• Led VU Meter

• Protection circuits to avoid overheating and
Electric power overload

DI and Headphones output and tuner out are
always active even if no speaker is plugged into the
speakon outputs.
It is possible to use the amplifier with no cabinet
connected, using with headphones or as a DI.

TECHNICAL FEATURES

POWER: RMS 300W @ 1% THD+N,20Hz–20 kHz, 4Ω
POWER: RMS 450W @ 0.1% THD+N,20Hz–20kHz,

2.7Ω

DYNAMIC RANGE: 113dBA
Parameters of nominal distortion output:
a) TDH+N: - 0.005 % @ 1 W (4 Ω, 1 kHz)

Low output impedence: 6mΩ
Total Efficiency: 80 % @ 300 W, 4 Ω

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