Marshall Amplification DBS 7200 manual Models, Front Panel Functions, English

Generally speaking the Low-Sensitivity input (2) suits bass guitars of high output levels e.g. active basses and the High Sensitivity input (1) suits lower output instruments (passive basses). As there are so many different output levels from the many types of instrument available to you, you should try both before making the decision.

Set the Primary EQ to flat and make sure that the Deep (5), Bright (7), Compression (13) and Graphic EQ switches (10) and the Master Volume control (14) are all off.

By turning the Gain control (3) until the peak LED lights occasionally you will be setting the optimum level of input gain. Too little means that the amp is working inefficiently, too much can cause unwanted distortion.

The Gain control (3) may need to be backed off accordingly if you boost the EQ, especially in the lower frequencies.

Note: (Even with the gain control off you will still get a sound through the speakers on turning up the Master Volume).

Turn up the Master Volume to the desired level and set-up your basic sound using the Primary EQ controls (6 & 8) combined with the Deep and Bright switches (5 & 7). The character of the sound can be changed using the pre-amp Blend control (4) from the brighter more percussive solid state tone to the warmer more compressed vintage valve tone.

When using the built in Compressor the compression threshold is set using the Gain control (3) and the amount of compression by the Depth control (11).

The clean power of the D.B.S is so dynamic that you may not need any further EQ although any amount of fine tuning of tone can take place using the 7 band Graphic Equaliser. Alternatively you can set-up an entirely different sound on the graphic then use the footswitch to switch between the two. This incredible clarity also means that you won’t have to compromise your EQ settings as the volume increases , as is often the case with normal bass amplification.

Models 7200, 72115 & 72410	7. Bright Switch
Front Panel Functions.	Push switch to add brightness and attack to the
	top end of the primary EQ.
1. Hi-sensitivity Input
	8. High Primary EQ Control
Input for the connection of bass guitars with
	Rotary control that gives + or - 15dB cut or boost
lower output levels.
	of the primary EQ upper frequencies.

ENGLISH

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. Deep Switch

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

6. Low Primary EQ Control

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

9. Graphic Equaliser

7 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.

10.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 ‘Off’ position.

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. Compression Threshold Indicator

LED which indicates when the compression threshold is reached.

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