User manual GALLIEN-KRUEGER 100BL

[. . . ] Input Shape, separate equalizers (with shift) for each channel, presence, and VCV filtering combine to make the BackLine a sound monster. Add three channel operation, through the Lead 1/Lead 2 feature, and you get an amp that gives you anything you want, from clean, to crunch, to lead, and it will do it with virtually any guitar, and any speaker system. VCV (Vintage Cabinet Voicing) has been a part of Gallien-Krueger amps for over ten years. Originally it was designed to make the 250ML sound big, even through its dual 6'' speakers. [. . . ] VOLUME Sets the overall Clean Channel volume level at the output. Use in conjunction with the Lead Volume to balance the level of each channel for channel switching. EQ SHIFT Shifts the operating frequencies of the equalizer in this case, it provides more bass for a mellower sound. THREE-BAND PASSIVE EQUALIZER Provides tone control over three frequency ranges specifically suited for a clean guitar tone. 12. PRESENCE Affects the very high frequency range controlling the "edge" of a lead tone and the brightness of a clean sound. REVERB Controls the amount of signal coming from the built- in 3-Spring Reverb that is to be mixed with the dry signal. VCV CIRCUIT SWITCH The VCV (vintage Cabinet Voicing) filter provides a bass boost, a high-mid peak, and a high frequency roll-off that simulates a speaker being miked and is very useful in recording direct to tape. This switch allows that same filter to be switched in for use in the speaker and the headphones. RF2 FOOTSWITCH JACK This jack accepts a 1/4'' stereo plug for connection to the RF2 footswitch which allows remote switching between Clean and Lead channels and Lead 1/Lead 2 when Lead Channel is selected. NOTE : LEAD MODE and LEAD SELECT should be pushed in for RF2 operation. 16&17 EFFECTS LOOP Provides a means of adding in-line effects (see Sample Hook-ups). The Send can also be used as a preamp output with no recording compensation. LINE OUT (RECORDING COMPENSATED) Provides a line-level signal with VCV filtering useful for going direct to a PA mixer or studio recorder. POWER SWITCH & LED Turns unit on (1) and off (0). Unplug unit if not being used for extended periods. position) for use with headphones or silent direct recording or if the unit is used for driving a larger 4 ohm cabinet such as a 4x12''. Note : No damage will result from operating the amplifier with the speaker disconnected. EXTERNAL SPEAKER JACK Allows external speakers to be driven by the internal power amp. For optimum performance and to avoid damaging the amplifier, use the following minimum external speaker impedance: INTERNAL SPEAKER "ON" : 8 ohm minimum total external impedance. INTERNAL SPEAKER "OFF" : 4 ohm minimum total external impedance. AC RECEPTACLE & FUSE HOLDER This combination grounded AC jack and fuse holder accepts a detachable power cord. If a replacement is needed, it should be UL rated at 10 amps/125VAC or 5 amps/240VAC. Never operate this amplifier with any other than the recommended fuse type : 5mm x 20mm, slow blow, 250V with ampere ratings as follows: Line Voltage 100 VAC 117 VAC 230 VAC Fuse Rating 5 Amps 4 Amps 2 Amps Fuse # T5A-250V T4A-250V T2A-250V To replace fuse, simply slide out the fuse holder using a screwdriver, as shown on the left. [. . . ] If you have any problems at all, please check this list first. If your problem is major and there is definitely something wrong with the unit, please refer to the list of GK Authorized Service Centers included with the paperwork in the packing box. If necessary, call your local GK Dealer to locate you nearest GK Authorized Service Center. You may also call our Service Department at (408) 441-7970, ext. 38 for reference to your nearest GK Authorized Service Center. PROBLEMS: LEDs light but no signal from Speaker Outputs, Headphones, or Line Outputs: LEDs light, tone and volumes turned up but no sound. [. . . ]