Fischer Amps Guitar Amplifier Manuals

1 FISCHER AMPS OPERATING INSTRUCTIONS Guitar Genius Dear customer: You have decided to buy a Fischer Amps product. Thank you. Please read this manual carefully prior to the first use, you will get important information for use and safety of the unit. These safety and operating instructions should be retained for future reference. Should you have further questions, please do not hesitate to contact FISCHER AMPS. Product Description: Guitar amplifiers with a tube power amp are very popular but have the problem of having to be turned up to very loud volumes in order to achieve that sound of power stage distortion we all love. The Guitar Genius allows to drive the power stage of a tube amp to the maximum whilst still playing at suitable volume levels for at home, or even silently using headphones or in-ear monitoring. The integrated Loadbox in the Genius Box exactly reproduces the impedance of a 4x12 speaker cabinet and is more than just a simple load resistance. This is crucial for the sound of the driven tube power stage. Optionally, the speaker cabinet can also be connected to the Loadbox. It is then supplied with approximately 40% of the emitted tube amplifier signal with 12 different switchable volume levels. The amplifier signal can be picked up from two transformer-balanced outputs on the Guitar Genius via a speaker simulation of a 4x12 speaker cabinet with four switchable characteristics. The "Line-Out" on the front panel is for direct connection to the "Aux-In" on the Fischer Amps In Ear Amp. This way the guitar amplifier can be recorded or used for practice silently or at reduced volume. The guitar setup on stage can also be operated at reduced volume or silently using the in-ear monitoring. The combination of Fischer Amps In Ear Amp and the Guitar Genius allows to mix the guitar signal from the amplifier with the "Stereo/Mono-In Ear Mix" or with a backing track for practice purposes. The Guitar Genius has an additional XLR headphones out so that the Fischer Amps Guitar In Ear Cable can be used for the guitar signal and the Stereo In Ear Mix. 2 The features of the Guitar Genius: • Guitar-Loadbox with reduced volume speaker output at 12 switchable volume levels with faithful reproduction of the impedance of a 4x12 speaker cabinet. • Toggle switch on the back panel for "Full Power" mode (without Loadbox) • Speaker simulation with four switchable sound characteristics (vintage, classic, modern, scoop) and two transformer-balanced line-outs. • “Line-In" for connecting guitar preamp line signals See below for two graphs which further explain the product description: Impedance Curve of the Guitar Genius: Frequency Curve of the Speaker Simulation: Operating controls and connections on the front panel 3 Description of the Operating Controls (Front Panel): (1) Front Panel Line Out asymmetrical: Transformer-separated line-out for speaker simulator signal, for instance, for connection to an optional Fischer Amps In Ear Amp. This gives you the option of mixing the speaker-simulated guitar signal from the amp with the In Ear mix or a backing track on the "In Ear Amp". The output level depends on the output of the connected amplifier and stands at –16dB. The output levels can be taken from the table in the technical data for the Guitar Genius (see page 6). (2) Ground Lift Front Panel Line Out: Disconnection of the line-out on the ground side in case of problems with buzzing which may have been caused by a ground loop. The "Ground Lift" is active when the button is pressed. (3) Sound Mode Selection Buttons for Speaker Simulation: You can use both these buttons to set the four different speaker simulation sound variations. You can use these four extremely practical simulation variants to make the appropriate preset for the particular amp sound you are looking for. Simple, effective and free of any unnecessary gimmicks! (4) Volume Control Guitar Cabinet When the Guitar Genius is used in Loadbox mode, you can use it to direct approximately 40% of the actual output from the amp to the speaker cabinet. You use the volume control to set the level of output to the speaker cabinet to 12 switchable levels. In the (0) position the speaker cabinet is completely switched off. Position (1) achieves volumes suitable for at home when playing a 100 watt amp which is driven hard and loud. In position (12) approximately 40% of the total amplifier output is directed to the speaker cabinet - and that's a great deal! The 12 levels are tapered logarithmically which means that these 12 levels can cover a very large and practical range of volumes. 4 Operating Controls and Connections on the Back Panel (1 ) Input for the Amp Signal Connect this Guitar Genius input to the speaker output on your guitar amp. The Guitar Genius is equivalent to an impedance of 8 ohms, therefore you should ideally use the 8 ohm output on your amp or set the impedance switch on the amp to 8 ohms. If 8 ohms is not available, it is better to use the 16 ohm output than the 4 ohm output in order to ensure that the power stage output can be adapted and the power stage can be loaded in the optimum manner. It is imperative that you use speaker cable of at least 1.5 sqmm to connect the speaker output. You must not use a normal guitar cable for this purpose! Otherwise you may cause considerable damage to your amp. (2) Toggle Switch: "Load Box" / "Full Power" mode When this switch is in the "Load-Box" position, the Load-Box on the Guitar Genius and the volume control on the front panel are both active. This setting enables you to use your amp even without the speaker connected to the Guitar Genius. For example, for recording or silent practice, using just as set of headphones together with the Fischer Amps In Ear Amp.... However, if you do get the chance to play on a 25m open-air stage, the Loadbox on the Guitar Genius can be switched off completely ("Full Power" mode). The full output from your amp is then directed to the speaker cabinet (e.g. it will be really loud). You can of course continue to use the speaker simulation and the two line-outs on the Guitar Genius. Important: When set in the "Full Power" position, it is imperative that there is a speaker cabinet connected to the Guitar Genius "Cabinet-Out" as the power stage of your amplifier will otherwise become damaged. (3) Output to Speaker Cabinet Connect this Guitar Genius input to your speaker cabinet. If you do not require a speaker cabinet, you can do without a speaker cabinet when the switch is in the "Load-Box" position. It is imperative that you use speaker cable of at least 1.5sqmm to connect the speaker output. You must not use a normal guitar cable for this purpose! Otherwise you may cause considerable damage to your amp.