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LINE OUT
This balanced XLR (24) output sends a balanced signal to the mixing console or snake in live and studio situations. The line out signal
combines the signals of both channels, includes effects, and is not affected by the master volume setting.

INSERT POINT
This jack allows you to insert an external component (e.g. another preamp, a compressor, etc.) into the preamplifier chain.

GROUND LIFT
Occasionally when you’re playing live and using the LINE OUT (24), the soundman will detect a hum from your amp’s signal. This is almost
always due to a grounding problem related to your power source; you will likely eliminate this hum simply by flipping the GROUND LIFT
(26) switch.

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3. AC601/AC101 HF Compression Driver Level Control

On the left side of the AC601/AC101 there is a level control that attenuates the high frequency compression driver. When the knob is tur-

ned all the way clockwise, there is no signal going to the compression driver. Turned all the way counter-clockwise, the compression dri-

ver is at its maximum level.

3.1 AC601/AC101 Acoustic Amplifier Phantom 9V XLR Setting

The images below show how your amp can be modified to send 9V of phantom power to the XLR input, by installing a jumper in the amp.

Please note that this modification must be made by qualified Markbass service personnel only.

Summary of Contents for AC 101

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Page 3: ...atures attractive design and extreme reliability all in one impossibly lightweight unit This amp will allow your instrument to speak in its natural voice faithfully conveying your musical ideas to your audience with stunning clarity Your amplifier has passed rigorous product testing and should survive even the toughest of environments on the road in clubs rehear sal halls and concert stages Noneth...

Page 4: ...try is designed specifically to not color the sound but to faithfully reproduce the unique tonal qualities of whatever instrument is played through it I have worked very closely with many high profile professional musicians around the world to fine tune the Mark Acoustic product line I am confident that these Mark Acoustic amps are now ready to satisfy the needs of acoustic musicians all over the ...

Page 5: ...mp and an analog power amp which deli vers 250W of power into a 4 ohm cabinet or 150W into an 8 ohm cabinet The AC601 features one custom designed 6 B C neodymium speaker and one HF compression driver The AC101 includes instead one custom designed 10 B C neodymium speaker and one HF compression driver 2 1 Acoustic Amp Front Panel ...

Page 6: ... you play This method will result in the optimal gain setting for the instrument you re playing Different guitars have different output levels mostly depending on their pickups and onboard preamp and EQ settings Once you ve set the GAIN 3 4 level use your MASTER 17 knob to control the volume of your instrument EQUALIZATION The AC601 AC101 acoustic amplifier is designed to faithfully reproduce the ...

Page 7: ...the max position you will hear only effect and no dry signal You cannot select a different effect for each channel but you can control how much effect is applied to each channel using the effect mix knobs LINE OUT LEVEL The LINE OUT 16 knob allows you to control how much signal comes out of the LINE OUT output 24 on the rear panel This is useful in live situations when the sound engineer may ask y...

Page 8: ...olume setting INSERT POINT This jack allows you to insert an external component e g another preamp a compressor etc into the preamplifier chain GROUND LIFT Occasionally when you re playing live and using the LINE OUT 24 the soundman will detect a hum from your amp s signal This is almost always due to a grounding problem related to your power source you will likely eliminate this hum simply by fli...

Page 9: ...there is no signal going to the compression driver Turned all the way counter clockwise the compression dri ver is at its maximum level 3 1 AC601 AC101 Acoustic Amplifier Phantom 9V XLR Setting The images below show how your amp can be modified to send 9V of phantom power to the XLR input by installing a jumper in the amp Please note that this modification must be made by qualified Markbass servic...

Page 10: ...igh level 16 dB 5KHz OUTPUTS INSERT POINT Unbalanced Max volyage 25Vpp SEND MIX Balanced Max output 20 Vpp SPEAKER OUT Speakon 1 4 OTHER SPECIFICATIONS DIMENSIONS Heighth 2 8 in 710 mm Depth 10 1 in 256 mm Width 10 87 in 276mm can be extended to standard rack size with optional rack ears WEIGHT 4 63 lbs 2 1 Kg OUTPUT POWER 150W RMS 8ohm 250W RMS 4ohm POWER REQUIREMENT 100V 120V 230V 240V 50 60Hz v...

Page 11: ...55 Hz to 18 KHz 45 Hz to 20 KHz CABINET SENSITIVITY dB SPL 98 101 CABINET IMPEDANCE 8Ω 8Ω REFLEX Rear Rear WEIGHT KG 8 8 10 5 WEIGHT LBS 19 4 23 15 WIDTH MM 313 353 WIDTH INCHES 12 32 13 90 HEIGHT MM 331 367 HEIGHT INCHES 13 03 14 45 DEPTH MM 285 367 DEPTH INCHES 11 22 14 45 PREAMP Solid state Solid state POWER AMP 150 8Ω 250 4Ω Analog Analog POWER SUPPLY All models are equipped with custom design...

Page 12: ...6 Acoustic Amplifier Schematics 10 ...

Page 13: ...11 7 Acoustic Amplifier Filter and EQ Graphs ...

Page 14: ...ions d emploi 1 Lire ces instructions 2 Conserver ces instruction 3 Suivre tous les conseils d utilisations 4 Suivre toutes les instructions 5 Ne pas utiliser cet appareil au bord de l eau 6 Nettoyer uniquement avec un chiffon humide 7 Ne pas bloquer le systéme de ventilation Installer conformément aux instructions du fabricant 8 Ne pas installer l appareil prés d une source de chaleur tel qu un r...

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Page 16: ...Produced Distributed by PARSEK srl Italy 66020 San Giovanni Teatino CH Via Aterno 44 Tel 39 08544 65 705 Fax 39 08544 07 399 www markbass it info markbass it ...

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