Bogner Helios Eclipse - User Manual

BOGNER AMPLIFICATION 1
HELIOS ECLIPSE USER MANUAL
Please read safety instructions before operating this amplifier!
1. Features:
• Point to point, hand wired, three channel all tube design
• Single instrument input
• Ch1: volume control and 3 position mode switch
• Ch2: independent gain and volume controls
• Pre EQ switch for plexi bright, normal and light bright
• Voicing switch for Hot, 80’s or eclipse mode
• Ch3: independent gain and volume controls
• Voicing switch for Hot, 80’s or eclipse + mode
• Shared presence control
• Shared bottom control with punch switch for low end response
• Tube buffered series fx loop with return level control
• Variac Switch
• Foot-controller connector
• 100 watt EL34 power amp
DIMENSIONS and WEIGHTS: Are subject to change anytime, Please measure your amp carefully if a Custom
Case is being made. Add ¼ inch for handle and ¾ inch rubber feet.
Head: 9.25" height 26.25" width 8.25" depth 43 pounds
Please make sure you read this manual to fully understand how to operate the amplifier!
ac power connector – back panel
Make sure the power and standby switch is in the off position and that your amplifier is made for the
correct power voltage of your location. Plug the supplied power cable into the amp’s connector first,
before you plug it into your ac outlet.
power switch
Before you turn the power on, make sure the standby switch is off and the power cord is connected. It is
also wise to already have a speaker cabinet, or similar load connected.
standby switch
At this point, in order to prevent any damage to the output transformer, you must have a speaker cabinet
connected and match the impedance of the two. Please allow a few minutes for the tubes to heat up,
before taking the amp off standby, to prevent unnecessary stress on them and possibly increase tube life.
inputs
Connect your instrument here,

Summary

Amplifier Features

Dimensions and Weights

Amplifier Operation and Connections

AC Power Connector

Connects the amplifier to the mains power supply.

Power Switch

Turns the amplifier on. Ensure standby is off and power cord is connected.

Standby Switch

Engages the amplifier after tubes have heated up to prevent transformer damage.

Inputs

Connection point for musical instruments.

Channel Descriptions

Channel 1

A simple clean channel with volume and a 3-position mode switch.

Channel 2 & 3

Two dirty channels with independent gain, volume, and voicing switches.

Channel Select

Momentary switch to cycle through channels 1, 2, and 3.

Rear Panel Controls and Connections

FX Loop & Return Level Control

Buffered series effects loop with return level for pedal-level effects.

Bottom Control & Punch Switch

Adjusts low-end response and adds punchy mids.

Presence Control

Sets overall brightness for all channels.

Speaker Outputs

Provides various impedance outputs for connecting speaker cabinets.

Variac Switch

Reduces input voltage by 15-20% for a softer feel and more harmonics.

Foot Controller

Connects the foot controller for channel and FX loop access.

Component Details and Troubleshooting

Tubes

Details on power tubes (EL34) and preamp tubes (ECC83) and their functions.

Fuses

Information on main and high-tension (h.t.) fuses.

Troubleshooting

Guidance for diagnosing and resolving common amplifier issues.

Bogner Helios Eclipse Specifications

General

Type	Tube Amplifier
Power Output	100 Watts
Channels	2
Preamp Tubes	4 x 12AX7
Power Tubes	4 x EL34
Effects Loop	Yes
EQ	Independent Treble, Middle, Bass controls for each channel