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Hersteller: Crate Amplifiers Dateigröße: 1.38 mb Dateiname: Unterrichtssprache:

To adjust, first make sure that nothing is plugged into the amp but the speaker cabinet. Turn the uniton and set the Pre Gain and Post Gain controls at 7 While listening to the speaker closely, gradually rotate the Hum Balance control using a screwdriver until hum is at a minimum. This procedure is required periodically. Reset Hum Balance after tube change. BOOSTER OUTPUT/REMOTE STANDBY (6) A preamp out signal which can be routed to another power amp. When placing a one button on/off switch in this jack it can be used as a remote standby. NOTE: VTM-60 back panel identical except for Fuse Rating (3 amp). Output Power, and Power Consumption — see specifications. |83 U'-n 2 = "S3 28* = a ^ '>ag°r 5 #*§«1 3 a: SisSS a SKiiSB p & l>«o n ? *g:J PI? Sc 22 VTM-60 SPECIFICATIONS VTM-120 SPECIFICATIONS POWER AMPLIFIER SECTION: 2 - 6L6GC's with 12AX7 Driver RATED POWER & LOAD: 60 W RMS into 16 or 8 or 4 ohms POWER @ CLIPPING: (Typically @ 5% THD. 1 kHz, 120 VAC line) 65 W RMS into 16 or 8 or 4 ohms (Bias must be reduced to measure) FREQUENCY RESPONSE: +0. -2 dB 50 Hz to 10 kHz @ 50 W RMS into 16 ohms HUM & NOISE: Adjust for minimum hum @ max gain POWER CONSUMPTION: 200 watts. 50/60 Hz. 120 VAC (domestic) PREAMP SECTION: 3- 12AX7*s The following specs are measured @ 1 kHz with the controls preset as follows: Post gain @ 10. Low, Mid & High EQ @ 10. Presence @ 0. All response modifications off (down) Nominal levels are with Pre Gain @ 5 Minimum levels are with Pre Gain @ 10 PREAMP HIGH GAIN INPUT: (Primarily designed as distortion Input) impedance: very High Z, 1m ohm Nominal Input Level: -48 dBV, 4 mV RMS Minimum Input Level: -60 dSV. 1 mV RMS Maximum Input Level: -6 dBV. 0.5 V RMS PREAMP LOW GAIN INPUT: (Primarily designed as non-distortion input) Impedance: very High Z imohm Nominal Input Level: -16 dBV. 160 mV RMS Minimum Input Level: -22 dBV 80 mV RMS Maximum Input Level Unlimited EFFECTS SEND: Load Impedance: 10K ohms or greater Nominal Output: -10 cBV. 300 mV RMS EFFECTS RETURN: Impedance: Very High Z. 1m ohm Designed Level: -10 dBV. 300 mV RMS BOOSTER OUTPUT: (REMOTE FOOTSWITCH) Load Impedance: 10k ohms or greater Nominal Level: -10 dBV. 3 V RMS SYSTEM HUM & NOISE @ NOMINAL INPUT LEVEL: (20 Hz to 20 kHz unweighted) Greater than 75 dB below rated power EQUALIZATION: Special Low. Mid & High passive-type EQ Presence: +6 dB @ 5 kHz RESPONSE MODIFICATIONS: (Dip Switches) Gam 1, Gain 2: Preamp Gain Select Compresor Clipper Select Low 1, Low 2: Low Frequency Response Selec: Mid: Mid Frequency Response Select High 1. High 2: High Frequency Response Select POWER AMPLIFIER SECTION: 4 - 6L6GC’s with 12AX7 Driver RATED POWER & LOAD: 120 W RMS into 16 or 8 or 4 ohms POWER @ CLIPPING: (Typically @ 5% THD. 1 kHz. 120 VAC line) 130 W RMS into 16 or 8 or 4 ohms (Bias must be reduced to measure) FREQUENCY RESPONSE: +0. -2 dB 50 Hz to 10 kHz @ 100 W RMS into 16 ohms HUM & NOISE: Greater than 88 dB below rated power HUM BALANCE CONTROL: Adjust for minimum hum @ max gain POWER CONSUMPTION: 400 watts, 50/60 Hz. 120 VAC (domestic) PREAMP SECTION: 3-12AX7S The following specs are measured @ 1 kHz with the controls preset as follows: Post gain @ 10, Low, Mid & High EQ @ 10. Presence @ 0. All response modifications ofl (down) Nominal levels are with Pre Gain @ 5 Minimum levels are with Pre Gain @ 10 PREAMP HIGH GAIN INPUT: (Primarily designed as distortion input) Impedance: very High Z. 1m ohm Nominal Input Level: -48 dBV, 4 mV RMS Minimum Input Level: -60 dBV. 1 mV RMS Maximum Input Level: -6 dBV, 0.5 V RMS PREAMP LOW GAIN INPUT: (Primarily designed as non-distortion input) Impedance: very High Z. 1m ohm Nominal Input Level: -16 dBV, 160 mV RMS Minimum Input Level: -22 dBV. 80 mV RMS Maximum Input Level: Unlimited EFFECTS SEND: Load Impedance: 10K ohms or greater Nominal Output: -10 dBV, 300 mV RMS EFFECTS RETURN: Impedance: Very High Z. 1m ohm Designed Level -10 dBV. 300 mV RMS BOOSTER OUTPUT: (REMOTE FOOTSWITCH) Load Impedance: 10k ohms or greater Nominal Level: -10 dBV. 3 V RMS SYSTEM HUM & NOISE @ NOMINAL INPUT LEVEL: (20 Hz to 20 kHz unweighted) Greater than 75 dB below rated power EQUALIZATION: Special Low. Mid & High passive-type EQ Presence +6 dB @5 kHz RESPONSE MODIFICATIONS: (Dip Switches) Gain 1, Gain 2: Preamp Gain Select Compresor: Clipper Select Low 1. Low 2: Low Frequency Response Select Mid: Mid Frequency Response Select High 1. High 2 High Frequency Response Select THIS LIMITED WARRANTY VALID ONLY WHEN PURCHASED AND REGISTERED IN THE UNITED STATES OR CANADA. ALL EXPORTED PRODUCTS ARE SUBJECT TO WARRANTY AND SERVICES TO BE SPECIFIED AND PROVIDED BY THE AUTHORIZED DISTRIBUTOR FOR EACH COUNTRY. Ces clauses de garantie ne sont valables qu’aux Etats-Unis et au Canada. Dans tous les autres pays, les clauses de garantie et de maintenance sont fixees par le distributeur national et assuree par lui seion la legislation en vig...

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