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D-400

OWNER’S MANUAL BEDIENUNGSANLEITUNG

Summary of Contents for D-400

Page 1: ...D 400 OWNER S MANUAL BEDIENUNGSANLEITUNG ...

Page 2: ...penings on the amplifier Never use this amplifier if it has 1 Suffered any physical damage 2 Been subjected to any liquids rain or moisture 3 Damaged cables connected to it If any of the above occurs the amplifier should be examined by qualified service personnel Always operate this amplifier with the correctly rated fuse Never use this amplifier without proper grounding The mains plug is used as ...

Page 3: ...and less noise 2 INPUT MUTE SWICTH Top Position Mute On Middle Position Low sensitivity for mainly active basses For basses with onboard electronics Input matched for low signal to noise ratio and optimum transfer of electrical signal from modern high end basses Bottom position High sensitivity for passive basses that do not have active electronics suitable for older vintage basses This setting is...

Page 4: ...nt is played and how the threshold is adjusted 12 COMPRESSOR THRESHOLD LEVEL CONTROL This will vary the level and the limiter threshold The compression ratio is 3dB to 1 Adjust this to suit your playing style and output power of your instrument The blue LED will light up when the signal is being compressed This will vary on how hard the instrument is played and how the threshold is adjusted 13 LED...

Page 5: ...output is not controlled by the volume control Changing the level on your instrument or input level will however vary the DI output 16 BALANCED LINE PRE POST EQ This switches the EQ in or out on balanced line You may choose the tone you have on your amp to go into the PA or for recording or you can use external EQ on mixing console the signal is sent to 17 BALANCED LINE OUT GROUND LIFT SWITCH Some...

Page 6: ...AMPLIFIER WITH THE GROUND CONNECTION REMOVED We recommend you use PJB cables for speaker connections They have virtually no loss so there is maximum transfer of power from amplifier to speaker Setting Up the Limiter Although a limiter is not essential to bass amplification it can be a useful tool in smoothing out the character of your instrument or playing style The D 400 limiter has a preset comp...

Page 7: ...peakers also vary in efficiency with frequency Most loudspeakers are louder in the mid range than in the bass or extreme high frequencies which is one reason we need EQ in am amplifier An EQ control is a frequency selective volume control It boosts or cuts level at a specific frequency So excessive boosting of frequencies especially on bass frequencies where almost 90 of the amplifier power is use...

Page 8: ...all situations This is a tiny 2 x3 inch speaker box that fits on a microphone stand It you play fretless bass this may be an essential piece of kit for you The PJB EAR BOX connects to speaker outputs of amplifier and does not change the speaker impedance load TRANSPORTING AND STORING THE D 400 When transporting or storing the D 400 it is recommended that you always use the gig bag provided When St...

Page 9: ...o 85dB A EQ off Volume on Full Impedance Passive Input 4MΩ 22pF Active Input 100KΩ 22pF Line Input 75KΩ Pre Amp Line Out 2KΩ Bal Out 1KΩ Levels Passive Input 10mV 1V Active Input 20mV 3V Pre Amp Out 1 2V FX send 1 2V Bal Line Out Typical 500mV Compressor Limiter Gain 0dB Compression Ratio 3dB 1dB EQ CENTER FREQUENCIES 70Hz 160Hz 630Hz 2 5KHz 12KHz at 18dB Included with D 400 Padded Gig Bag and Pow...

Page 10: ...ry where the product is used Repairs or modifications by anyone other than authorized PJB service agent Damages defects caused by force majeure or any other condition that is beyond the control of PJB IMPORTANT In all warranty issues your first line of communication should be to the retailer you purchased from even if you have purchased product from an online source When a local distributor is ava...

Page 11: ...American Acoustic Development LLC 8509 Mid County Industrial Dr St Louis MO 63114 USA WWW PJBWORLD COM Printed in China ...

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