MODEL 7400 FRONT PANEL FUNCTIONS.

1. Hi-sensitivity Input

Input for the connection of bass guitars with lower output levels.

2. Lo-sensitivity Input

Input for the connection of bass guitars with higher output levels.

3.Gain Control with Peak LED

Controls the level of input gain.

For optimum signal level the peak LED should light occasionally.

4. Pre-Amp Blend Control

This control fully anti-clockwise routes the signal through purely solid state input pre-amp circuitry. Turned fully clockwise the signal is routed through an ECC83 pre-amp valve circuit. The various positions in between offer numerous combinations of the brighter more percussive solid-state tone with that of warmer more compressed valve tone.

5. Bright Switch

Push switch to add brightness and attack to the top end of the primary EQ.

6. Deep Switch

Push switch to add extra bottom to the low end of the primary EQ.

7. Low Primary EQ Control

Rotary control that gives + or - 15dB cut and boost of the lower end of the primary EQ.

8. High Primary EQ Control

Rotary control that gives + or - 15dB cut or boost of the primary EQ upper frequencies.

9. Compression Threshold Indicator

LED which indicates when the compression threshold is reached.

10. Compression On/Off Push Switch

Push switch which activates the compression circuit.

11. Compression Depth Control

Rotary control for selecting the depth of compression. Note: (This control works in conjunction with input gain control (3)). The input Gain control should be used to set the threshold level and the depth control to select the amount of compression.

12. Graphic Equaliser

9 Band graphic equaliser offering + or - 15dB cut or boost (centre flat) of the frequencies that

proved to be the most effective for bass reproduction in our exhaustive listening tests.

13. Graphic EQ Master Level

Master level slider offering + or - 6dB cut or boost (centre 0dB) of the overall graphic level. This allows the accurate balancing between the levels with or without the graphic switched in.

14. Graphic On/Off Switch and Indicator

Push switch to access or by-pass the graphic with LED indicating on/off status. (The graphic is also footswitchable by any standard on/off footswitch).

For the footswitch to function the front panel switch must be in the ‘On’ position).

15. Volume Control

Rotary control to set the overall output level of the amplifier.

16. D.I. Pre or Post EQ Selection Switch

Selection switch to offer a studio or PA engineer with the choice of direct signal either before or after EQ and compression has been added.

17. Power Switch

On\ Off mains power switch with LED indicator and featuring soft start circuitry to minimise switch on and switch off noise.

MODEL 7400 REAR PANEL FUNCTIONS.

18.Mains Input Connector

For connection to mains power supply.

19.Twin Speaker Outputs

Heavy duty locking type sockets for connection to loudspeakers. The minimum total load is 2 Ohms.

As Dynamic Bass System cabinets are rated at 4 Ohms, combinations of two cabinets provide the optimum load.

20. Graphic Footswitch Jack

Jack socket for the connection of a single On/Off footswitch for the Graphic EQ.

21. Link In Jack

Jack socket to accept the Link output signal from another Dynamic Bass System amplifier when extending the system.

22. Link Out Jack

Jack socket to feed the Link input of another Dynamic Bass System amplifier when extending the system. Note: (The Link in and the Link out jacks are optimised for linking Marshall Dynamic Bass System amplifiers only).

ENGLISH

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Marshall Amplification DBS 7400 manual Model 7400 Rear Panel Functions
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DBS 7400 specifications

Marshall Amplification is synonymous with high-quality guitar amplification, and among its renowned products is the DBS 7400, a versatile and powerful bass amplifier. This innovative amp was designed to cater to the needs of bassists looking for both performance and reliability. With its unique combination of features, technologies, and characteristics, the DBS 7400 stands out as a solid choice for bass players of all levels.

At the core of the DBS 7400 lies its impressive power output. It delivers a staggering 400 watts of RMS power, ensuring that it can handle any performance scenario, from small gigs to larger venues. This amp is well-suited for various musical styles, making it an ideal choice for versatile musicians who switch between genres. The power provides not only volume but also clarity and depth, allowing bass notes to resonate without losing their punch.

One of the standout features of the DBS 7400 is its comprehensive EQ section. The four-band equalizer allows musicians to shape their tone precisely, with controls for bass, midrange, and treble frequencies. Coupled with a presence control, this feature enables players to fine-tune their sound, ensuring they achieve the desired sonic character for any setting, whether in the studio or on stage.

The inclusion of a built-in compressor is another defining characteristic of the DBS 7400. This technology aids in achieving a balance in dynamics, making sure that louder notes don't overpower softer ones. The compressor is invaluable for maintaining consistent sound quality, particularly during live performances where dynamics can vary dramatically.

Additionally, the DBS 7400 is equipped with an effects loop, allowing users to integrate their favorite pedals easily. This feature opens up creative possibilities for bassists, enabling them to experiment with various effects without compromising the integrity of their tone.

Durability is also a critical aspect of the DBS 7400 design. Built with robust materials, this amplifier is constructed to withstand the rigors of touring musicians, ensuring that it remains reliable gig after gig.

Overall, Marshall Amplification’s DBS 7400 combines power, versatility, and technology in a user-friendly package. With its impressive features, it caters to the diverse needs of bass players, making it a compelling option for those seeking to elevate their sound.
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