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Summary of Contents for VHT Special 12
- Page 1 VHT SPECIAL 12/20 12-20 Watt Hand-Wired Vacuum Tube Guitar Amplifier User Manual...
- Page 2 TABLE OF CONTENTS PRODUCT SAFETY INFORMATION....1 OVERVIEW.............2 FEATURES.............3 CONTROL PANEL FUNCTIONS.....4-5 REAR PANEL FUNCTIONS......6-7 BLOCK DIAGRAM..........7 BOOST CONTROL GRAPH........8 TONE CONTROL GRAPHS......9-10 DEPTH CONTROL GRAPH......11 TEXTURE SWITCH GRAPH......12 FX RETURN - DEPTH CONTROL GRAPH...13 FX RETURN -TEXTURE SWITCH GRAPH...14 SCHEMATIC............15 TECHNICAL SPECIFICATIONS......16...
- Page 3 1) Read these instructions. 2) Keep these instructions. Building on the success of the popular VHT Special 6 and Special 6 Ultra, the VHT Special 12/20 features increased power (with two power 3) Heed all warnings. ranges), a unique preamp specifically designed to excel with pedals and multi-effects units, a convenient built-in 9-volt DC pedal power supply, 4) Follow all instructions.
- Page 4 2. Pentode/Standby/Triode: The Triode setting reduces the amplifier’s maximum output power to approximately one-half of the Pentode set- 12” VHT ChromeBack Speaker, 60-watt, 16 ohm (Combo Only) ting. Triode setting produces a richer and smoother tone, with earlier breakup than the Pentode setting. The middle position is Standby mode.
- Page 5 CONTROL PANEL FEATURES CONTINUED REAR PANEL FEATURES 5. Depth Control: This 6-position rotary switch selects the output tube’s low-frequency roll-off point. Set fully clockwise for the deepest low- frequency extension. Lower settings (counterclockwise) expose more midrange texture and detail; the lowest settings emphasize more pres- ence and bite.The three clockwise settings are voiced for single-coil pickups, and the three counterclockwise settings are voiced for humbuck- ing pickups.
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Page 6: Block Diagram
(unbalanced) signal to other equipment such as mixing consoles or other amplifiers. Multiple Special 12/20 amplifiers can be linked by connecting the Line Out jack to the Effects Return of the second amplifier. Several Special 12/20’s can be linked in this manner, with the first amplifier’s preamp serving as the master preamp for all additional amplifiers. - Page 7 TONE CONTROL — NO BOOST TONE CONTROL — PULL BOOST...
- Page 8 DEPTH CONTROL — PREAMP INPUT (NO BOOST) TEXTURE SWITCH — PREAMP INPUT (NO BOOST) +7.5 +7.5 +2.5 +2.5 -2.5 -2.5 -7.5 -7.5 -12.5 -12.5 -17.5 -17.5 -22.5 -22.5 -27.5 -27.5 -32.5 -32.5...
- Page 9 DEPTH CONTROL — EFFECTS RETURN INPUT TEXTURE SWITCH — EFFECTS RETURN INPUT +8.5 +8.5 +7.5 +7.5 +6.5 +6.5 +5.5 +5.5 +4.5 +4.5 +3.5 +3.5 +2.5 +2.5 +1.5 +1.5 +0.5 +0.5 -0.5 -0.5 -1.5 -1.5...
- Page 10 TECHNICAL SPECIFICATIONS VOLUME INPUT Name/Model: VHT Special 12/20 — 12-20 watt hand-wired vacuum tube guitar amplifier Power Requirements & Consumption: 100/115VAC, 50/60Hz; 120VAC, 60Hz; 220VAC/230VAC240/VAC, 50/60Hz Push = Closed (Clean) Pull = Open (Boost) Maximum Output Power: 12-20 watts (depending on output tube type and Volt setting) Speaker (combo only): One 12”...
- Page 11 LIMITED WARRANTY INFORMATION This amplifier is warranted, to the original Purchaser, to be free from defects in material and workmanship for a period of five (5) years, excluding the tubes and speaker, which are warranted for ninety (90) days, from the original date of purchase. The manufacturer shall, at its option, either repair or replace the defective product if the product is returned to the original place of purchase.