Marshall Amplification DBS 7400 Bedienungsanleitung

HAND

BOOK

BASS

DYNAMIC

SYSTEM

ENGLISH

FROM THE CHAIRMAN

I would like to thank you personally for

selecting one of our Dynamic Bass systems.

My company has always been totally

committed to the design and manufacture of the

worlds finest amplification.

We are well aware that catering for the

constantly changing demands of musicians

requires heavy investment into the research and

development of new product ranges capable of

meeting those demands. The new Marshall

Dynamic Bass System comes as a direct result

of that investment.

The innovative circuitry that forms the heart of

the amplifier required many hours of dedicated

and painstaking research and much consultation

with bass players of international stature.

Equally the production of the matching cabinet

range, required all the accumulated

manufacturing skills that we have acquired over

the past three decades.

We set out with only one objective in mind, that

was to re-define what a bass system should be.

This we have achieved and you are now the

owner of the remarkable resulting system.

Please be sure to read this handbook carefully

before operating your new Dynamic Bass

System.

Sincerely

WARNING!

PLEASE READ THE FOLLOWING LIST CAREFULLY.

A. ALWAYS fit a good quality mains plug conforming to the latest B.S.I. standards

(UK only).

B. ALWAYS wire the plug in accordance with the colour code attached to the mains lead (UK

only).

C. DO NOT attempt to remove the amplifier chassis. There are no user serviceable parts

inside.

D. ALWAYS have this equipment serviced or repaired by competent, qualified personnel.

E. NEVER under any circumstances, operate the amplifier without an earth.

F. NEVER use any amplifier in damp or wet conditions.

G. ALWAYS ensure that the impedance of the speaker or speakers connected does not fall

below the amplifiers minimum impedance rating.

H. NEVER obstruct the ventilation grills.

I. ALWAYS use Marshall D.B.S speaker leads.

J. PLEASE READ this instruction manual carefully before switching on.

Constant exposure to the high sound pressure levels of which this amplification system

is capable could result in permanent damage to your hearing.

Although individuals will vary in their susceptibility to noise induced hearing loss,

almost everyone will have their hearing impaired if exposed to intense sound levels

for a sufficient length of time.

To prevent the occurance of permanent hearing loss, it is advisable to wear ear plugs or protectors if you

are going to be exposed to high noise levels for prolonged periods.

INTRODUCTION

The Marshall Dynamic Bass System was carefully designed using innovative new circuitry to provide you

with a combination of superb sensitivity and excellent control plus incredible levels of dynamic power to

project and respond to the full range of contemporary bass sounds.

Superb sensitivity comes from the fully blendable mixture of a valve or solid state input pre-amp. The

solid-state section offers fast, percussive attack, as favoured by many modern players, whilst the single

ECC83 valve provides the smooth warmth and more compressed classic tone exclusive only to valve

technology.

Excellent control is derived from comprehensive EQ and compression facilities including primary EQ,

where Low and Hi rotary tone controls combine with deep and bright switches to give amazing depth and

clarity to your basic sound. More precise tone shaping or the ability to set up a completely contrasting

sound, is available from the switchable 9 band graphic EQ, which has been tailored to cut and boost those

frequencies that are fundamental to dynamic bass performance. The built in compressor provides further

control and features industry standard technology for smooth operation and the highest performance

quality.

Knowing how important headroom and clean power are to accurate, powerful bass reproduction led our

designers to engineer a system with headroom that goes far beyond the normal limits. Whereas a

conventional bass amplifier has an RMS to peak power ratio of 1:2, the Marshall Dynamic Bass System

dramatically increases this ratio to 1:10, giving you five times more headroom than an ordinary bass

amplifier.

The result is a no compromise bass system with an RMS rating of 400 watts capable of delivering peaks

of 4000 watts. This ensures that the system has the energy to respond accurately to even the widest

dynamic range.

In sound terms this extended headroom provides incredible clarity and punch to give you the most

responsive, rewarding bass amplification system that you've ever played through.

ENGLISH

USING THE DYNAMIC BASS SYSTEM

Make all the external connections such as the send (26) and return (27) to and from your effects processor,

the output to your guitar tuner (25) and connection to the footswitch for the graphic EQ (20) if required.

If you are extending the system by linking to a further D.B.S. amplifier, take a screened guitar cable from

the link-out jack (22) of the controlling amplifier to the link-in jack (21) of the slave system.

Check that the Speakon connectors are fully located, twisted and locked at both the cabinet and amplifier

ends (see diagram) before switching on your D.B.S amplifier. Note: (When systems are linked together

always switch on the master system before switching on the slave system and vice versa on switching off).

Select the correct input to match your bass.

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 (6), bright (5), compression (10) and graphic EQ

switches (14) and the master volume control (15) 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

(7&8) combined with the deep and bright switches (5 & 6). 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 9 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.

SPEAKON CONNECTORS

1.Ensure locking ring (A) is rotated fully Anti-clockwise. Insert Speakon connector into socket and align

key ways.

2. Rotate body of the connector (B) fully Clock-wise.

3. Rotate locking ring (A) Clock-wise to it's full extent.

Note: (Reverse above procedure to remove connector).

MOUNTING THE 7400 IN A RACK

Though your 7400 Dynamic Bass System amplifier comes supplied in a purpose built 3U sleeve, it is also

rack mountable. As with all rack mount products of substantial weight, we strongly recommend that you

ensure that it is adequately supported using suitable brackets at the rear as well as the front.

(See Rear Panel diagram for positions of fixing bolts).

ENGLISH

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

THE CABINET RANGE

Using the finest materials, construction techniques and specially custom designed loudspeakers, we have

created a range of extraordinary bass cabinets which perfectly complement the power and performance of

the Dynamic Bass System.

The loudspeakers required highly specialised research, to enable them to handle the high continuous power

levels and awesome power peaks that the Dynamic Bass System is capable of producing.

These custom speakers all feature specially reinforced cone systems, high temperature voice coils and

massive magnet assemblies, all housed in ultra rugged cast chassis.

Connections to the cabinets are via heavy-duty locking sockets to ensure a safe, no loss high powered

termination.

Each cabinet is ported and carefully tuned to its matching speakers and integrates perfectly with other

models in the range to cover the entire spectrum of bass sounds.

Model 7410 4x10 with Horn (800 watts RMS -4 Ohms).

This cabinet has an unusually deep bass response for it’s type. Superb transient attack is provided by the

high frequency horn which features a 6 position attenuator control, from the horn fully off at one extreme to

the horn fully on at the other extreme.

The 7410's tight and punchy performance totally suits upfront modern styles of bass playing.

Dimensions - Height 698mm x Width 698 mm x Depth 380mm.

Model 7412 4x12 (800 watts RMS -4 Ohms).

Recognising the enormous potential that the 4x12 cabinet has to offer for bass, considerable engineering

time was devoted to the specially designed speakers and cabinet of the 7412.

Combining many of the best characteristics of the 2x15 and 4x10 cabinets together, the 7412 has plenty of

bottom end with rapid transient attack. This is the ideal cabinet for playing situations requiring a single

speaker cabinet with maximum tonal response.

Dimensions - Height 1000mm x Width 698mm x Depth 489mm.

Model 7215 2x15 (600 watts RMS -4 Ohms).

The model 7215 features drive units designed to achieve superb, high sensitivity bass response.

In addition to forming the foundation of a serious bass system when combined with either the 7410 or

7412, this unit’s complementary balanced high end provides enough presence and attack to allow it to be

used on its own.

Dimensions - Height 1000mm x Width 698mm x Depth 489mm.

Note: (The RMS power handling figures are for comparison only when used with non Dynamic Bass

System amplifiers. The peak capacity of these cabinets is individually matched to the performance of the

Dynamic Bass System amplifier).

23. D.I. Level Selection Switch

Selects 0dB or -20dB D.I. output levels for

maximum interfacing flexibility.

24. Balanced D.I. Output

For direct connection to recording or PA mixing

desks and switchable pre or post EQ (16).

The D.I. output is fully transformer isolated to

guarantee against problems with earth loops and

hence an earth lift switch is not required.

25. Tuner Output Jack

Instrument level buffered output for direct

connection to an electronic tuner.

26. Effects Send Jack

Jack socket to connect to the input of an external

effects processor.

27. Effects Return Jack

Jack socket to accept the output from an external

effects processor. Note: (The output level of the

effects loop is nominally centred around + 4 dB

which makes it compatible with most rack effects

processors).

28. Line Level Control

Rotary control providing level control of the line

out from zero to +4dB.

29. Line Output Jack

Jack socket ideal for connection to home

recording equipment.

Front Panel

Rear Panel

DYNAMICS BASS SYSTEM

POWER

DEEP

BRIGHT

GRAPHIC

ONPEAK

INPUT

D.I. PRE

POST

HI LO

FLAT

+15dB

-15dB

+6dB

-6dB

0dB

HILO

DEPTH

-15 +15

. .

S V

. .. . -15 +15

. .

PRIMARY EQ COMPRESSIONGAIN PRE-AMP

BLEND VOLUMEGRAPHIC EQUALIZER

LEVEL50 80 160 320 640 1250 2500 5000 8000

S-SOLID STATE

V-VALVE THRESHOLD

MIN MAX

. .

12 16 17

34 567 8 91011 12 1314 15

MAINS INPUT

230V ~ 50Hz

900 VA GRAPHIC

FOOTSWITCH

LINE OUTPUT LINE

LEVEL (dBm)

-∞

EFFECTS

RETURN EFFECTS

SEND TUNER

OUT

LINK IN LINK OUT D.I. LEVEL

0dBm (out)

-20dBm (in) BALANCED D.I.

OUTPUT

WARNING! No user serviceable parts inside;

refer servicing to qualified personnel only.

AVIS! Risque de choc. Ne pas ouvrir.

WARNING! Fire & Shock Hazard: Do not expose this

unit to rain or moisture. This Apparatus Must Be Earthed.

Do not open

Manufactured in Great Britain by:

Marshall Amplification plc, Bletchley, Milton Keynes.

MINIMUM LOAD 2 OHMS

(400 Watts R.M.S.)

NE RAS UTILISER SANS HALT-

PARLEUR

SPEAKER OUTPUTS

18 19 20 21 22 23 24

29 28 27 26 25

Rear fixings for support brackets when rack mounted (4 off)

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Marshall Amplification Verstärker für Musikinstrumente Handbücher

Marshall Amplification

Marshall Amplification JVM2 Series Bedienungsanleitung

Marshall Amplification

Marshall Amplification DBS 7200 Bedienungsanleitung

Marshall Amplification

Marshall Amplification JTM60 Bedienungsanleitung

Marshall Amplification

Marshall Amplification JCM 2000 DSL50 Bedienungsanleitung

Marshall Amplification

Marshall Amplification DSL-1H Bedienungsanleitung

Marshall Amplification

Marshall Amplification JCM SLASH Bedienungsanleitung

Marshall Amplification

Marshall Amplification AFD100 Slash Signature Bedienungsanleitung

Marshall Amplification

Marshall Amplification Class 5 Bedienungsanleitung

Marshall Amplification

Marshall Amplification Valvestate 2000 AVT series Bedienungsanleitung

Marshall Amplification

Marshall Amplification Class 5 H Valve Amplifier Bedienungsanleitung

Marshall Amplification

Marshall Amplification MG15 Series Bedienungsanleitung

Marshall Amplification

Marshall Amplification MG15FXMSDM Bedienungsanleitung

Marshall Amplification

Marshall Amplification ValveState Bedienungsanleitung

Marshall Amplification

Marshall Amplification Valvestate VS230R Bedienungsanleitung

Marshall Amplification

Marshall Amplification JCM 2000 TSL100 Bedienungsanleitung

Marshall Amplification

Marshall Amplification G30RCD Bedienungsanleitung

Marshall Amplification

Marshall Amplification JVM205C Bedienungsanleitung

Marshall Amplification

Marshall Amplification MG100FX Bedienungsanleitung

Marshall Amplification

Marshall Amplification MG SERIES Bedienungsanleitung

Marshall Amplification

Marshall Amplification MG100FX Bedienungsanleitung

Marshall Amplification

Marshall Amplification VALVESTTE AVT100 Bedienungsanleitung

Marshall Amplification

Marshall Amplification MG15FX Gold Bedienungsanleitung

Marshall Amplification

Marshall Amplification Valvestate 8100 Bedienungsanleitung

Marshall Amplification

Marshall Amplification 1987X-PW Bedienungsanleitung

Beliebte Verstärker für Musikinstrumente Handbücher anderer Marken

Peavey

Peavey Wiggy Bedienungsanleitung

acus

acus One Forstreet 10 Bedienungsanleitung

Pyle Pro

Pyle Pro PPG860A Bedienungsanleitung

Laney

Laney BC30 Bedienungsanleitung

Vox

Vox Pathfinder 15SMR Bedienungsanleitung

Crate

Crate Professional BV-120H Bedienungsanleitung

Peavey

Peavey Basic 60 Bedienungsanleitung

Fender

Fender Bassman 1200 Bedienungsanleitung

ZT Club Bedienungsanleitung

Ibanez

Ibanez IFS2X Bedienungsanleitung

Crate

Crate GLX1200H Bedienungsanleitung

Laboga

Laboga THE BEAST Bedienungsanleitung

Falken1

Falken1 Traveller Pro Bedienungsanleitung

Hughes & Kettner

Hughes & Kettner Bass Kick 303 Bedienungsanleitung

Yamaha

Yamaha GA-10 Bedienungsanleitung

Engl

Engl Powerball-2 Service-Handbuch

Gibson

Gibson GA5WTR Kurzanleitung

Engl

Engl Powerball-2 Bedienungsanleitung