The users guide was excellent. It provided the information neeeded to connect and control the Crate system. Nothing was left to chance
Text excerpt from page 4 (click to view)
V-4BH
The Front Panel Controls and Their Use
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0dB -15dB
HI LO INPUTS GAIN ULTRA HI/LO BASS MIDRANGE FREQUENCY TREBLE MASTER STANDBY POWER
STANDBY/ POWER
1
2
3
45
6
7
8
9
10
11
12
13
1. 0dB INPUT: This jack accepts the signal from a passive instrument through a shielded instrument cable. 2. -15dB INPUT: This jack accepts the signal from an active instrument through a shielded instrument cable. 3. GAIN: This control adjusts the basic level of signal in the preamp. 4. ULTRA HI: This switch boosts high frequencies. 5. ULTRA LO: This switch, when engaged, provides emphasis to the low frequencies by boosting the low frequencies and selectively cutting the mid frequencies. 6. BASS: This is the primary low frequency control. It allows for 12dB of cut or boost at 40Hz. 7. MIDRANGE: This is the primary midrange control. It allows for 20dB of cut or 10dB of boost at the center frequency selected by the Frequency control (8).
8. FREQUENCY: Allows you to select the center frequency for the Midrange control (7), giving you a choice of five �voices: for the Midrange. The center frequencies are (from left to right) 220Hz, 450Hz, 800Hz, 1.6kHz and 3kHz. 9. TREBLE: This is the primary high frequency control. It allows for 20dB of cut or 15dB of boost at 4kHz. 10. MASTER: This controls the signal level to the power amp and therefore the overall listening level. It also controls the level to the Preamp Out jack (16). 11. STANDBY/POWER INDICATOR LED: This is a dual-function LED. In Standby Mode, it glows red. In the On mode (when the high voltage comes on) it glows green. If it does not turn green in the On mode, there is no high voltage present and the unit needs servicing.
12. STANDBY: The Standby mode allows the tubes to warm or remain warm without high voltage being applied to them. This extends tube life. This switch should be OFF when first turning the amplifier on. Allow the unit to warm up for 20 seconds before switching to the ON position. During short periods of non-use, the amp should be put into Standby mode. 13. POWER: This supplies AC power to the unit. Turn this switch on before turning on the Standby switch (#12), as explained above.
