Marshall Amplification 1923 Footswitch Channel, Reverb Footswitch, Effects Loop Send, Return

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Footswitch

1. Channel

By connecting the supplied PEDL10001 footswitch to this jack it is possible to switch between Channel A and Channel B. The footswitch will override the front panel Channel switch position (item 15).

2. Reverb Footswitch

By connecting another PEDL10001 footswitch (optional) to this jack it is possible to remotely switch reverb on and off.

Effects Loop

3. Send

For connection to the input of an external effects processor.

4. Return

For connection from the output of an external effects processor.

5. Loop Level

matches the total impedance of the speaker cabinet(s) being used.

Failure to comply with these points will result in damage to the amplifier.

The three outputs, a dedicated 16 Ohm output and two outputs selectable between 4 and 8 Ohms.

The amp should not be run into an impedance less than 4 Ohms.

6. 16 Ohm Output

For the connection of a 16 Ohm speaker cabinet. It should be noted that when this Speaker Output is in use the remaining Speaker Outputs, items 7 and 8, will become inoperational.

7 & 8. 4 & 8 Ohm Outputs

For use when the total impedance of speaker cabinets used is either 4 or 8 Ohms. That is,

10. H.T. fuse

See rear panel for correct value.

11. Mains Input

Your amp is provided with a detachable mains (power) lead which is connected here. The specific mains input voltage rating that your amplifier has been built for is shown on the back panel. Before connecting for the first time, please ensure that your amplifier is compatible with your electricity supply. If you have any doubt, please get advice from a qualified person. Your Marshall dealer will help in this respect.

12. Mains fuse

See rear panel for correct value.

Loading Points

One 4 Ohm cabinet, set to 4 Ohms One 8 Ohm cabinet, set to 8 Ohms Two 8 Ohm cabinets, set to 4 Ohms Two 16 Ohm cabinets, set to 8 Ohms

N.B. Always ensure that proper speaker leads are used to connect speakers, not guitar leads!

WARNING!

If loudspeaker is disconnected a high voltage can be present at these output terminals. Operation in this manner can damage your amplifier, therefore ensure that loudspeaker is properly connected.

Your amp should be completely powered down before changing loads.

The loop level can be adjusted to match either floor pedals, requiring a low level or effects processors which require a high level.

Loudspeaker Outputs

With all valve amplifiers it is imperative that the amp is connected to a load whilst in operation and that the impedance selected on the amp

when using either a single 4 Ohm cab, a single 8 Ohm, two 8 Ohm cabs or two 16 Ohm cabs.

9. Impedance Selector

Allows selection of 4 or 8 Ohms impedance for items 7 & 8. See Loading Points.

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Follow all instructions and heed all warnings

KEEP THESE INSTRUCTIONS !

* EUROPE ONLY - Note: This equipment has been tested and found to comply with the requirements of the EMC Directive (Environments E1, E2 and E3 EN 55103-1/2) and the Low Voltage Directive in the E.U.

* EUROPE ONLY - Note: The Peak Inrush current for the 1923 and 1923C is 33 amps. 5

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Contents Page From the Chairman Power Switch Standby SwitchDeep Switch Ultra Gain / Channel B VolumeFootswitch Channel Reverb FootswitchEffects Loop Send Return

1923C, 1923 specifications

Marshall Amplification has been a cornerstone of the music industry since its inception in 1962, known especially for its electric guitar amplifiers. However, the brand's evolution and its groundbreaking models, like the Marshall Amplification 1923 and 1923C, have drawn attention in recent years. These amplifiers embody both rich heritage and modern technological advancements, providing musicians with tools that enhance their sound.

The Marshall 1923 is a dual-channel guitar amplifier that layers classic Marshall tones with contemporary features. This model includes a unique power scaling feature, allowing musicians to achieve cranked-up tones at manageable volume levels. This is particularly beneficial for home use or small venues where overwhelming sound levels are impractical, ensuring that the warm characteristics of tube-driven sound can be accessed without compromise.

One of the key highlights of the Marshall 1923 is its versatile tone-shaping capabilities. It features an EQ section that includes treble, mid, and bass controls, which offer a wide range of sonic possibilities. Whether a guitarist seeks a rich, creamy sustain for solos or a sharp, biting tone for rhythm parts, the 1923 can accommodate diverse musical styles.

Similarly, the 1923C model amplifies the key features of the 1923 but includes additional functionalities tailored for more extensive live performance settings. The 1923C is equipped with built-in effects loops, allowing guitarists to integrate their favorite pedals seamlessly. This model also boasts a higher wattage output, providing more headroom and dynamic range for those explosive moments during a live set.

Both models feature rugged construction to endure the rigors of touring and performance, with high-quality components that ensure durability. The classic Marshall aesthetic—a black vinyl covering with distinctive gold piping—exudes a timeless appeal that stands out on stage and in the studio.

The integration of modern technologies with the traditional craftsmanship of Marshall amplifiers has made the 1923 and 1923C appealing to guitarists who wish to maintain a connection to the iconic sounds of rock while leveraging today's advancements for improved playability and versatility. Whether in the rehearsal space, studio, or on the main stage, these amplifiers continue to inspire creativity and sound excellence among musicians worldwide.