V33H Tube Guitar Amplifier with Reverb Owner’s Manual
V33H Tube Guitar Amplifier with Reverb TABLE OF CONTENTS Introduction ..........................................................................3 The Front Panel ....................................................................4 The Rear Panel .....................................................................5 Important Information About Tubes and Tube Products ............6 A Brief History of Tubes ..................................................6 Tube Types and Usage .............................
V33H Tube Guitar Amplifier with Reverb Introduction Congratulations! You are now the proud owner of a Crate V33H tube guitar amplifier. This rugged amplifier packs a whole lot of vintage tube sound and classic spring reverb into its compact cabinet, providing you with an amp that is portable and easy to operate, yet still produces incredible sounds! The V-Series amps offer the versatility required for many different musical styles, and have the unique tonal purity of a hot-rodded tube amp.
V33H Tube Guitar Amplifier with Reverb The Front Panel VOLUME 4 5 GAIN 6 3 4 9 1 0 10 2 4 9 3 0 10 4 TREBLE 6 4 8 9 1 BOOST 5 0 10 6 5 MIDDLE 6 3 7 2 8 1 C H ANNEL 5 3 7 2 8 1 INPUT LEVEL 6 3 7 2 5 4 8 0 4 8 9 1 10 7 0 10 8 5 REVERB 6 3 7 2 9 1 BASS 6 3 7 2 5 4 2 9 0 10 9 6 7 2 8 1 5 3 7 10 ON S TA N D B Y POWER 13 14 9 1 PRESENCE ON 8 0 10 11 12 1.
V33H Tube Guitar Amplifier with Reverb The Rear Panel 15 16 D E S I G N E D I N S T. L O U I S M O , U S A .
V33H Tube Guitar Amplifier with Reverb Important Information about Tubes and Tube Products: A Brief History Of The Tube: In 1883, Edison discovered that electrons would flow from a suspended filament when enclosed in an evacuated lamp. Years later, in 1905, Fleming expanded on Edison’s discovery and created the “Fleming Valve.” Then, in 1907, Dr. Lee de Forest added a third component – the grid – to the “Fleming Valve” and the vacuum tube was a fact of life.
V33H Tube Guitar Amplifier with Reverb Important Information About Tubes and Tube Products (continued): The power tubes are the largest tubes used in an amplifier. These tubes convert the low-level, conditioned signal from the preamplifier into a level that is sufficient to drive the speakers. There are several types of power tubes available, each of which offers a different performance/sound characteristic. For example, the EL34 power tube produces a great classic rock sound.
V33H Tube Guitar Amplifier with Reverb Important Information About Tubes and Tube Products (continued): Whenever you replace the power tube(s): • Always have the amplifier’s bias voltage checked by a qualified service center. Improper bias voltage will cause degradation in performance and possibly damage the tubes and/or the amplifier. (See “The Importance of Proper Biasing”, below for more information). • We highly recommend that you replace the driver tube(s) as well.
V33H Tube Guitar Amplifier with Reverb Important Information About Tubes and Tube Products (continued): Survival Tips For Tube Amplifiers: To prolong tube life, observe these tips and recommendations: • Match the impedance of your speaker cabinet(s) to your amplifier. Improper impedance matching will contribute to early tube degradation and may cause premature tube failure. • Make sure the speaker(s) are properly connected prior to turning on the amplifier.
V33H Tube Guitar Amplifier with Reverb Some Suggested Settings Sweet ‘n Clean: OUT (Clean) VOLUME 4 5 GAIN 6 3 9 0 9 0 TREBLE 6 8 BOOST 10 8 0 6 4 4 8 10 0 REVERB 6 7 10 9 0 7 1 9 8 PRESENCE 10 6 3 2 8 1 5 4 2 9 1 5 3 7 2 9 10 BASS 6 3 7 1 5 4 2 9 0 MIDDLE 6 3 7 1 5 4 2 8 CHA N N EL 5 3 7 1 10 4 2 8 1 LEVEL 6 3 7 2 INPUT 5 4 0 10 Just a ‘Lil Nasty: IN (Overdrive) VOLUME 4 5 GAIN 3 2 9 0 CHA N N EL 10 9 0 TREBLE 8 BOOST 10
V33H Tube Guitar Amplifier with Reverb System Block Diagram GUITAR INPUT 12AX7 V1A 12AX7 V1B CHANNEL SELECT 12AX7 V2A 12AX7 V2B OVERDRIVE GAIN TREBLE MID BASS BOOST PRESENCE CLEAN VOLUME PHASE SPLITTER CHANNEL SELECT EFFECTS EFFECTS SEND RETURN OVERDRIVE LEVEL 12AX7 V3A 12AX7 V3B REVERB DRIVE REVERB RECOVERY EL84 V4 EL84 V5 EL84 V6 EL84 V7 8 OHM SPEAKER 8 OHM EXTENSION SPEAKER REVERB LEVEL Declaration Of Conformity Manufacturer: LOUD Technologies Inc. 16220 Wood-Red Rd.
V33H Tube Guitar Amplifier with Reverb V33H TECHNICAL SPECIFICATIONS Output Power Rating 33 W rms @ 10% THD, 8 ohm load, 120 VAC Input Impedance 700 kohms Signal-to-Noise Ratio 42 dB, Typical (Clean Ch only) Gain Overdrive Ch Clean Ch 102 dB, all controls @ 10 56 dB, all controls @ 10 EQ Treble: 12 dB range @ 6 kHz Middle: 10 dB range @ 1 kHz Bass: 8 dB range @ 150 Hz Boost 10 dB @ 900 Hz Presence 8 dB @ 10 kHz Preamp Tubes (3) 12AX7 Power Tubes (4) EL84 Power Requirements 90-132 VAC, 60
