Each of the jacks may be used as an input or a through connection. The three position HF Horn switch allows for: • Full high frequency output (0 setting) • High frequencies reduced by 6dB (-6 setting) • Horn shutoff (off setting) IMPORTANT SAFETY INSTRUCTIONS: 1.Read, follow and keep these instructions. Heed all warnings. 2.This speaker is capable of producing high sound pressure levels that may cause permanent hearing damage. User caution is advised and ear protection is recommended duri

0dB INPUT: Connect your “passive” bass guitar here using a shielded instrument cable. This input is not padded and is best suited for basses without active electronics or “hot” pickups. 2. -15dB INPUT: Connect your “active” bass here using a shielded instrument cable. This input is padded 15dB and is best suited for basses with active electronics and/or “hot” pickups. 3. VOLUME: Use this control in conjunction with your instrument’s volume controls to adjust the output level of the amplifier. Th

This control allows an adjustment of +/-15dB at 5kHz. 10. ULTRA HIGH: This switch, when depressed, increases the high frequency output by 8dB at 10kHz. 11. EFFECTS BLEND: Use this control to adjust the level of external effects that are connected to the Effects Send and Return jacks (#21 and #20, rear panel). With this control in the fully counterclockwise position no effect is applied to the signal. As you rotate the control clockwise the level of the effect increases and the level of “dry” sig

by TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Important Safeguards and Precautions . . . . . . . . . .3 The Front Panel Controls and Their Use . . . . . . . .4 The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Some Suggested Settings . . . . . . . . . . . . . . . . . . .6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .7 System Block

During short breaks this switch should be set to the Standby position to help prolong the life of the amplifier’s tubes. 10. BIAS SWITCH: With this switch, users may now select between 1964 cathode bias or 1966 fixed bias, 1964 or 1966 preamp or have the ability to mix and match. 11. ON/OFF SWITCH: Use this switch to turn the overall system power on or off. Always turn this switch ON first and OFF last! Turn the On/Standby switch [9] on at least 30 seconds after turning on the On/Off switch. Her

Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding-type plug. A

Skid rails are placed on the back of the enclosure to protect it while loading in and out of venues. (Place a foot against one of the rails when tilting the cabinet back to roll it.) The Speakon® and 1/4" jacks are wired in parallel, allowing easy daisy chaining from one speaker to another. Each of the jacks may be used as an input or a through connection. Speakon® connectors are recognized as the standard for professional installations, assuring a secure, permanent connection that won't corro

For example, the EL34 power tube produces a great Classic rock sound. When an EL34 is driven into distortion it produces a unique sound ("crunch"). When compared to the 6L6, the EL34 distorts more quickly, exhibits a "looser" Important Information About Tubes and Tube Products (Continued): low-end response and produces more harmonics at mid and high frequencies ("creamier" sound). These differences become more noticeable at higher volumes. The 6L6 tubes produce a big low-end thump and have a ver

• DO NOT USE THIS APPARATUS NEAR SPLASHING, FALLING, SPRAYING, OR STANDING LIQUIDS. • CLEAN ONLY WITH LINT-FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS. • ONLY CONNECT POWER CORD TO A POLARIZED, SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND COMPATIBLE WITH VOLTAGE, POWER, AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS. • PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON, PINCHED, OR STRAINED. • UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UN

Clean with a dry lint-free cloth. Never spray cleaning agents on the Heritage SVT-410HLF. Avoid abrasive cleansers which would damage the finish. Ampeg continually develops new products and improves upon existing ones. For this reason, the specifications and information in this manual are subject to change without notice. “Ampeg” is a registered trademark of LOUD Technologies Inc. All other brand names mentioned are trademarks or registered trademarks of their respective holders and are hereby a