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4.2  Additional useful tips

Depending on the respective application, the guitar amp can be used in various modes:

Stereo

Both power amp channels operate independently of

each other, each input (CHA and CHB) is amplified by

one channel, speakers are connected to both channels,

the volume for both outputs can be controlled sepa‐

rately.

Bridged

Both power amp channels are internally wired for pro‐

viding double the output power. Only the signal from

input CHA is amplified, speakers are only connected to

the accordingly labelled output. Use volume control

CHA to adjust the volume.

On each output of the amplifier, the overall impedance resulting from the individual impe‐

dances of the connected speakers must not fall below the minimum allowable impedance of

the amp's output. If you want to connect multiple speakers to one amplifier output, note the

following:

n

when connecting speakers in series, the impedances add up.

Available operating modes

Installation and starting up

 

GPA-400

15

Stereo Guitar Power Amp

Содержание Harley Benton GPA-400

Страница 1: ...GPA 400 Stereo Guitar Power Amp User Manual...

Страница 2: ...Thomann GmbH Hans Thomann Stra e 1 96138 Burgebrach Germany Telephone 49 0 9546 9223 0 Internet www thomann de 01 12 2022 ID 319961 V3...

Страница 3: ...ety instructions 9 3 Features 12 4 Installation and starting up 13 4 1 Tips on handling speakers 14 4 2 Additional useful tips 15 5 Connections and operating elements 17 6 Technical specifications 20...

Страница 4: ...4 GPA 400 Stereo Guitar Power Amp...

Страница 5: ...ilable to all persons using this device If you sell the device to another user be sure that they also receive this manual Our products and user manuals are subject to a process of continuous developme...

Страница 6: ...version to find the topics of interest for you quickly Online guides Our online guides provide detailed information on technical basics and terms Personal consultation For personal consultation pleas...

Страница 7: ...f symbol and signal word indicates an immediate dangerous situation that will result in death or serious injury if it is not avoided CAUTION This combination of symbol and signal word indicates a pos...

Страница 8: ...Warning signs Type of danger Warning high voltage Warning danger zone General information 8 GPA 400 Stereo Guitar Power Amp...

Страница 9: ...e supervised or instructed by a person who is responsible for their safety Safety DANGER Danger for children Ensure that plastic bags packaging etc are disposed of properly and are not within reach of...

Страница 10: ...stall the device near any direct heat source Keep the device away from naked flames NOTICE Operating conditions This device has been designed for indoor use only To prevent damage never expose the dev...

Страница 11: ...in damage to the device and possibly injure the user Unplug the device before electrical storms occur and when it is unused for long periods of time to reduce the risk of electric shock or fire NOTIC...

Страница 12: ...3 Features n Maximum output power 400 W 8 n Operating modes Bridged Mono Stereo n Volume Resonance and Presence adjustable per channel n Fanless operation Features 12 GPA 400 Stereo Guitar Power Amp...

Страница 13: ...pping hazards NOTICE Magnetic fields The device generates strong magnetic fields that can interfere with the function of poorly shielded devices The strongest magnetic fields are directly above and be...

Страница 14: ...impedance and power handling of the speakers must match the requirements of the amplifier Always follow the technical specifications of the speakers The overall impedance of the connected loudspeakers...

Страница 15: ...ble the output power Only the signal from input CHA is amplified speakers are only connected to the accordingly labelled output Use volume control CHA to adjust the volume On each output of the amplif...

Страница 16: ...of the individual impedances This means for example with two speakers with the same impedance In series connection impedance is doubled In parallel connection it s halved Detailed information on this...

Страница 17: ...lements POWER ON OFF CHA VOLUME PRESENCE RESONANCE CHB VOLUME PRESENCE RESONANCE GUITAR POWER AMPLIFIER GPA 400 BRIDGE MUTE PEAK SIGNAL SIGNAL PEAK Front panel Connections and operating elements GPA 4...

Страница 18: ...BRIDGE indicator LED yellow This LED lights up when the device is operating in bridged mode 8 MUTE switch to mute the device The white indicator LED lights up when the device is muted 9 PEAK indicato...

Страница 19: ...ls A and B 15 Mono Bridge Stereo switch to toggle between bridged mono operation via channel A and stereo operation via channels A and B 16 OUTPUTS CHA output sockets to connect a passive speaker box...

Страница 20: ...stereo 2 50 W 8 stereo 2 100 W 4 stereo 2 200 W 16 bridged 200 W 8 bridged 400 W Frequency response 20 Hz 20 kHz Signal to noise ratio 90 dB Total harmonic distortion THD 0 15 Cooling fanless Damping...

Страница 21: ...perating supply voltage 230 V 50 Hz Fuse 5 mm 20 mm 2 5 A 250 V slow blow Dimensions W H D 482 mm 44 mm 250 mm Weight 3 kg Ambient conditions Temperature range 0 C 40 C Relative humidity 20 80 non con...

Страница 22: ...nd and shielding while the signal is trans mitted through the core Unbalanced transmission is susceptible to electromagnetic interference especially at low levels such as microphone signals and when u...

Страница 23: ...Signal 2 Ground shielding 1 Signal left 2 Signal right 3 Ground 1 4 TS phone plug mono unbalanced 1 4 TRS phone plug stereo unbalanced Plug and connection assignment GPA 400 23 Stereo Guitar Power Am...

Страница 24: ...etc on a reg ular basis Before cleaning switch off the device and disconnect mains operated devices from the mains Only use pH neutral solvent free and non abrasive cleaning agents Clean the unit wit...

Страница 25: ...nd markings on the packaging This product is subject to the European Waste Electrical and Electronic Equipment Directive WEEE in its currently valid version Do not dispose with your normal household w...

Страница 26: ...Notes 26 GPA 400 Stereo Guitar Power Amp...

Страница 27: ......

Страница 28: ...Musikhaus Thomann Hans Thomann Stra e 1 96138 Burgebrach Germany www thomann de...

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