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Victory V4 Series - User Manual

Victory V4 Series
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User Guide
The Duchess V4 Guitar Amplifier

Table of Contents

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Summary

The Duchess V4 Guitar Amplifier

Safety Instructions

Damage Requiring Service

Conditions requiring unplugging from wall outlet and referring to qualified service personnel.

Replacement Parts

Ensures using specified replacement parts for safety and proper performance.

Controls and Connections

Input Connection

Describes connecting the guitar or front-end pedals to the amplifier's input.

Footswitch Tremolo

Details the socket for a 1-way latching footswitch to control the Tremolo.

Effects Loop

Explains the SEND and RETURN sockets for connecting external effects units.

Rear Panel Outputs

Line Out (Balanced)

Describes the TR5 socket for balanced connection to PA systems or desks.

9 Vdc Output

Explains the 9Vdc output for powering effect pedals, noting current limits.

Top Panel Control Descriptions

Frequency and Volume Controls

Explains controls for Bass, Middle, Treble frequencies, and overall Volume.

Master Volume Operation

Describes Master Volume's role in controlling stage/overall volume and gain.

Tremolo Controls

Details controls for adjusting Tremolo amplitude modulation depth and speed.

Reverb Control

Explains the built-in digital reverb control for adjusting reverb amount.

Footswitch Functionality

Describes the main footswitch for ON/OFF and remote switching.

Cooling and Important Warnings

Cooling Fan Details

Details the 60mm fan, its voltage, and role in amplifier cooling.

Critical Safety Warnings

Lists critical safety warnings regarding electronics, liquids, and modifications.

Output, Warranty, and Support

Output Level Specifications

Explains output levels and measurements for different impedance loads.

Warranty and Repair Information

Outlines the 5-year limited warranty and terms for product repair.

Summary

The Duchess V4 Guitar Amplifier

Safety Instructions

Damage Requiring Service

Conditions requiring unplugging from wall outlet and referring to qualified service personnel.

Replacement Parts

Ensures using specified replacement parts for safety and proper performance.

Controls and Connections

Input Connection

Describes connecting the guitar or front-end pedals to the amplifier's input.

Footswitch Tremolo

Details the socket for a 1-way latching footswitch to control the Tremolo.

Effects Loop

Explains the SEND and RETURN sockets for connecting external effects units.

Rear Panel Outputs

Line Out (Balanced)

Describes the TR5 socket for balanced connection to PA systems or desks.

9 Vdc Output

Explains the 9Vdc output for powering effect pedals, noting current limits.

Top Panel Control Descriptions

Frequency and Volume Controls

Explains controls for Bass, Middle, Treble frequencies, and overall Volume.

Master Volume Operation

Describes Master Volume's role in controlling stage/overall volume and gain.

Tremolo Controls

Details controls for adjusting Tremolo amplitude modulation depth and speed.

Reverb Control

Explains the built-in digital reverb control for adjusting reverb amount.

Footswitch Functionality

Describes the main footswitch for ON/OFF and remote switching.

Cooling and Important Warnings

Cooling Fan Details

Details the 60mm fan, its voltage, and role in amplifier cooling.

Critical Safety Warnings

Lists critical safety warnings regarding electronics, liquids, and modifications.

Output, Warranty, and Support

Output Level Specifications

Explains output levels and measurements for different impedance loads.

Warranty and Repair Information

Outlines the 5-year limited warranty and terms for product repair.

Overview

  1. Function Description
  2. Important Technical Specifications
  3. Usage Features
  4. Maintenance Features

The device described in this manual is the Victory V4 Series Duchess Guitar Amplifier.

Function Description

The Duchess V4 Guitar Amplifier is a compact, high-performance guitar amplifier designed to deliver a wide range of tones, from clean headroom to natural valve overdrive. It incorporates a pre-amplifier section with specific valve types and an ICEpower 200AS1 output stage. The amplifier features a built-in digital reverb and a tremolo effect, both controllable from the top panel. It is designed for use with electric guitars and can be integrated into various setups, including direct connection to a PA system or desk, or with external effects pedals.

Important Technical Specifications

  • Power Output:
    • 180 Watts RMS into 4 Ohms (maximum)
    • 100 Watts RMS into 8 Ohms
    • 50 Watts RMS into 16 Ohms
    • Measurements taken at 240V mains input using a 1 KHz Sine Wave, just before clipping.
  • Valves (Tubes):
    • V1: EC900 (6HA5) triode (1x)
    • V2, V3, V4: CV4014 (EF91) pentode (3x)
    • These are 7-pin valves, not interchangeable with normal 9-pin dual-triode types (e.g., 12AX7/ECC83).
  • Output Stage: ICEpower 200AS1. The output stage is fully protected against short circuit and open circuit, meaning it can be used without a speaker or load connected.
  • Speaker Impedance: Drives any load of 4 Ohms and above. Higher impedance loads will result in less output power.
  • 9Vdc Output: Max 500mA, for powering effects pedals.
  • Line Out (Balanced): TRS socket, Post-EQ and Effects Loop signal, nominally 1.7Vrms (+4dbu).
  • Cooling: Fitted with a 60mm 12V fan, voltage reduced to ~3V for optimal speed vs. noise vs. cooling. The amplifier does not rely on the fan for correct operation; it reduces external chassis heat.
  • Dimensions (Unboxed): 224mm (w) x 105mm (h) x 170mm (d), including feet and handle.
  • Dimensions (Boxed): 285mm (w) x 160mm (h) x 215mm (d).
  • Weight (Unboxed): 1.6 Kgs (3.52 lbs).
  • Weight (Boxed): 2.0 Kgs (4.4 lbs).
  • Mains Fuse: T2A L Fuse, 85-265Vac.
  • Effects Loop: Simple, low impedance, series loop.

Usage Features

  • Input: Standard input for guitar or front-end pedals.
  • Controls (Top Panel):
    • Bass: Adjusts low frequency content.
    • Middle: Adjusts midrange frequencies for cut or fattening.
    • Treble: Adjusts high frequency content and shapes overdrive character.
    • Volume: Adjusts input sensitivity for clean headroom or natural valve overdrive.
    • Master Volume: Sets overall amplifier volume. When maxed, the V4 acts as a non-master volume amp, with input Volume and guitar Volume controlling gain and volume.
    • Tremolo Depth: Controls the amplitude modulation of the tremolo effect.
    • Tremolo Speed: Controls the rate of the tremolo effect.
    • Reverb: Controls the amount of built-in digital reverb.
    • Tremolo Footswitch: Large switch on the top panel to turn the tremolo effect ON/OFF (LED indicates ON).
  • Rear Panel Connections:
    • Footswitch Tremolo: Socket for an optional 1-Way latching footswitch to remotely switch the Tremolo effect ON/OFF.
    • Effects Loop (SEND/RETURN):
      • SEND: Connects to the input of effects units (e.g., Delay, Chorus, Reverb). Can also send a signal to another amplifier.
      • RETURN: Connects to the output of effects units. Internally connected to SEND when not in use. Can be used as a small signal 'Slave' input. Warning: Do NOT plug an amplifier's speaker output into the Return socket.
    • Line Out (Balanced): For balanced connection to a PA system or desk, including all tone, tremolo, reverb, and pedal effects.
    • 9Vdc OUT: Powers external effects pedals (max 500mA).
    • Speaker Output: Connects to a speaker cabinet.
    • Mains Input: For the power cord.
  • Fault Diagnosis: The RETURN socket can be used to bypass the pre-amplifier section. Plugging a guitar directly into RETURN and playing can help identify if a sound problem is in the pre-amp section (likely a faulty pre-amp valve).
  • Pedal Board Integration: Countersunk screws for the baseplate allow for feet removal, enabling the amp to be Velcro'd flush to a pedal board.

Maintenance Features

  • User Guide: Provided with the amplifier, regularly updated versions available on the Victory website.
  • Safety Instructions: Emphasizes reading guidelines, following warnings (especially those in RED), avoiding use near liquids, not blocking openings, using a dry cloth for cleaning, and referring all servicing to qualified personnel.
  • Damage Requiring Service: Specifies conditions under which servicing is required (damaged cord/plug, liquid/objects in product, exposure to rain/water, abnormal operation, dropped/damaged, distinct change in performance).
  • Replacement Parts: Service technicians should use manufacturer-specified replacement parts to avoid fire, electric shock, or other hazards.
  • Valve Replacement:
    • Recommended to be done by a qualified technician.
    • Requires unplugging mains lead and allowing capacitors to discharge.
    • Remove 4 x M4 Countersunk Posi-Drive bolts holding the base plate (using a No.2 Point Posi-Drive screwdriver).
    • Valves are held tightly; use a slow circular motion to ease them out.
    • Ensure pins are correctly lined up (gap between pins 1 & 7) when replacing.
    • No biasing or setup is required after changing valves.
    • Screenprinting on the base plate indicates valve types.
    • Replacement valves (EC900, CV4014) are available from www.victorystore.co.uk.
  • Screws: All Victory amplifiers use Posidrive Screws & Machine Bolts, which require an 8-blade Posidrive screwdriver (No.1 and No.2 Point recommended) for optimal precision and torque, to prevent damage during maintenance.
  • Warranty:
    • 5-year limited warranty covering manufacturing defects and faulty components.
    • Valves (tubes) have an extended 2-year warranty (from the usual 90 days) due to their high-quality NATO specifications (Mullard CV4014s and E.I. EC900s), designed for a minimum lifespan of 6000 hours.
    • Warranty is transferable to a new owner.
  • Service Centres: Victory is establishing Official Service Centres globally; check the website for locations. These centres provide original Victory spare parts and qualified technical support for warranty and non-warranty work.
  • Contact Information: Sales and service email addresses, website, YouTube, and Facebook links are provided for support.

Victory V4 Series Specifications

General IconGeneral
BrandVictory
ModelV4 Series
CategoryMusical Instrument Amplifier
LanguageEnglish

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