Retain this manual, the warranty card and all other documentation for future reference. Contents SAFETY PRECAUTIONS •••••••••••••••••••••••••••••••••••••• 2 Features ••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 3 Terms Used in This Manual •••••••••••••••••••••••••••••••••• 4 Using the unit on batteries ••••••••••••••••••••••••••••••••••• 5 Controls and Functions / Connections (*Setting the input gain) ••••• 6 Selecting Patches for Play ••••••••••••••••••••••••••••••••••• 8 Using the Tuner Function ••••••••••••••••••••••••••••••••••• 10 Editing a Patch ••••••••••••••••••••••••••••••••••••••••••••••• 12 Storing/Copying Patches ••••••••••••••••••••••••••••••••••• 14 Changing the "Patch Call" Method •••••••••••••••••••••••• 16 Using the Feedback Suppressor ••••••••••••••••••••••••••• 18 Using the Expression Pedal •••••••••••••••••••••••••••••••• 20 Restoring Factory Defaults ••••••••••••••••••••••••••••••••• 21 Linking Effects •••••••••••••••••••••••••••••••••••••••••••••••• 22 Effect Parameters •••••••••••••••••••••••••••••••••••••••••••• 23 Specifications •••••••••••••••••••••••••••••••••••••••••••••••• 30 Patch List ••••••••••••••••••••••••••••••••••••••••••••••••••••• 31 Usage Precautions Troubleshooting Features Safety Precautions SAFETY In this manual, symbols and cautions accidents can be prevented. The meanings Warning This symbol indicates explanations dangerous matters. If users ignore this symbol and handle the way, serious injury or death could result. Caution This symbol indicates explanations matters. If users ignore this symbol and handle the device the way, bodily injury and damage to the equipment could result. Features The 504 II is processor electric guitar with features and • Rich effect palette for acoustic The 504 II incorporates specially designed an acoustic guitar. De-AMP reduces harshness guitar through a guitar amplifier. AIR lends a spacious feeling sound. TOUCH makes picking more uniform and smooth. also useful as a preamplifier for recording acoustic or electric and it offers various patches tuned specially for electric • Great for electric guitar too The built-in simulator transforms the sound of an electric an acoustic instrument. During a live performance, this makes it a snap to switch between different sound characteristics. • Highly effective feedback suppressor The F.B.SUPPRESSOR function automatically detects the frequencies where feedback (howling) occurs and attenuates that band. Operation can be controlled easily with a foot switch. • Built-in auto-chromatic tuner The integrated tuning function lets you quickly and precisely tune your instrument on stage. • Dual power supply enables operation anywhere The dual power supply principle allows the unit to be powered either from an AC adapter or from four IEC R6 (size AA) batteries. Continuous operation time on batteries is 8 hours with manganese batteries and 28 hours with alkaline batteries. • Compatible with foot switch and pedals An optional foot switch (FS01) or expression pedal (FP01/FP02) can be connected to the CONTROL IN jack. The foot switch is useful for quickly detecting the feedback frequency, and the expression pedal allows adjusting the volume or effect tone in real time. • Improved successor to 504 While inheriting the sound characteristics of the very successful ZOOM model 504, the 504 II is even more compact and carries a lower price tag. What's more, it incorporates the world's first wah effect specifically designed for acoustic guitar, plus several other novel effects such as the EMPHASIZER which duplicates the characteristic sound of a resonator. ZOOM 504 II ACOUSTIC Please observe the following safety tips and precautions to ensure hazard-free About power • Since power consumption of this unit is Warning fairly high, we recommend the use of an AC adapter whenever possible. When powering the unit from a battery, use only an alkaline type. AC adapter operation • Be sure to use only an AC adapter which supplies 9 V DC, 300 mA and is equipped with a "center minus" plug (Zoom AD-0006). The use of an adapter other than the specified type may damage the unit and pose a safety hazard. • Connect the AC adapter only to an AC outlet that supplies the rated voltage required by the adapter. • When disconnecting the AC adapter from the AC outlet, always grasp the adapter itself and do not pull at the cable. • If the unit is not to be used for a long time, disconnect the AC adapter from the outlet. Battery operation • Use four IEC R6 (size AA) 1.5 V batteries (alkaline/manganese). • The 504 II cannot be used for recharging. Pay close attention to the labelling of the battery to make sure ...