Fender Blues Junior IV - Guitar Amplifier Manual

INTRODUCTION

The Blues Junior IV is a longtime 15-watt favorite with warm tube tone ideal for the go-anywhere guitarist who needs great sound and versatile features such as spring reverb. Features include:

• Modified preamp circuitry for increased fullness
• Spring Reverb smoothness mod
• Celestion® 12" A-TYPE speaker
• Single-button footswitch for FAT mid boost
• Steel-reinforced strap handle
• Ivory pointer knobs
• Improved control panel texture and graphics
• Lightly aged silver grille cloth

CONTROL PANEL

1. INPUT: Plug your guitar in here.
2. VOLUME: Adjusts preamp gain. Increase the volume setting to produce more distortion and sustain. Use lower volume settings to produce cleaner sounds.
3. FAT: Press in to boost preamp gain for extra distortion and sustain. You can use a footswitch to activate the FAT boost remotely. See Footswitch (J).
4. TREBLE/BASS/MIDDLE: Adjusts tone character.
5. MASTER: Adjusts the overall volume output of the amplifier. Use MASTER to adjust the volume of the amplifier after you have set VOLUME (B) for the desired level of preamp distortion.
6. REVERB: Adjusts the level of the reverb effect.
7. POWER INDICATOR: Illuminates when the unit is on.
8. POWER SWITCH: Switches the unit on/off.

REAR PANEL

9. POWER CORD: Connect to a grounded outlet in accordance with the voltage and frequency ratings specified on the rear panel of your amplifier.
10. FOOTSWITCH JACK: Plug in a footswitch to enable remote selection of the FAT boost circuit. The FAT switch (C) on the control panel is disabled when the footswitch is connected.
11. SPEAKER JACK: Connection for the internal speaker or an 8-ohm external speaker cabinet. An 8-ohm speaker load must always be connected to the speaker jack when the unit is on to prevent damage to the amplifier.
12. TUBE STABILIZER: A shock-absorbing stabilizer (light gray) is installed on the output tubes to minimize the tube vibration and microphonics that normally develop over time. The stabilizer can be used with all output tubes compatible with your Blues Junior IV amplifier.
13. TUBES: Your new Blues Junior IV amplifier comes equipped with the highest quality tubes available, sourced from various manufacturers worldwide. Because of occasional irregularities in supply, the specific tube type used in each amplifier is subject to change without notice.
    When replacing the EL84 output tubes, please note the specific tube markings on the original tubes factory supplied with your amplifier. For example, EL84 output tube types include, but are not limited to: GT-EL84-R; GT-EL84-S; ST-EL84-R; etc. The installation of a different type may require significant adjustment by a qualified technician to avoid reduction in performance and tube life.
    Additionally, Fender tests and sorts our EL84 output tubes based on their measured performance. The sorted tubes are labeled with a fine rating of 1-10 and may also be labeled with a coarse rating color of BLUE, WHITE or RED. A pair of matched EL84 output tubes with the same fine rating (and coarse rating, if applicable) as the original tubes will be the perfect replacement. However, replacement tubes with a fine rating within one number of the original tubes can be used without rebiasing the amplifier.
    If you have questions or concerns, please contact your Fender dealer or authorized service center.
14. FUSE (NOT SHOWN): In the unlikely event of an electrical fault, your Blues Junior IV amplifier is protected by an internal fuse. If the unit should suddenly stop working, take it to an authorized service center to have the fuse replaced and the cause of the electrical fault inspected.

SPECIFICATIONS

Product specifications subject to change without notice.

Documents / Resources

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download Fender Blues Junior IV - Guitar Amplifier Manual