Marshall Amplification Stereo Amplifier DBS 7200 User Manual

7200 Head,  
D Y  
72115 & 72410 Combos  
 
WARNING!  
PLEASE READ THE FOLLOWING LIST CAREFULLY.  
A. ALWAYS Ensure that a good quality mains plug conforming to the latest BSI standards is  
fitted-(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 correct type of speaker leads when using extension cabinets.  
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 occurrence 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 7 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 200 watts capable of delivering peaks of  
2000 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.  
Using the Dynam ic Bass System .  
Make all the external connections such as Speaker Outputs (18), the Send (20) and Return (21) to  
and from your effects processor, the output to your guitar tuner and connection to the footswitch for  
the Graphic EQ (23) if required.  
Select the correct input to match your bass.  
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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.  
7. Bright Switch  
Push switch to add brightness and attack to the  
top end of the primary EQ.  
Models 7200, 72115 & 72410  
Front Panel Functions.  
1. Hi-sensitivity Input  
Input for the connection of bass guitars with  
lower output levels.  
8. High Prim ary EQ Control  
Rotary control that gives + or - 15dB cut or boost  
of the primary EQ upper frequencies.  
2. Lo-sensitivity Input  
Input for the connection of bass guitars with  
higher output levels.  
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.  
3. Gain Control with Peak LED  
Controls the level of input gain.  
For optimum signal level the peak LED should  
light occasionally.  
10. Graphic On/Off Switch and  
Indicator  
4. Pre-Am p Blend Control  
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).  
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.  
For the footswitch to function the front panel  
switch must be in the ‘Off’ position.  
11. Com pression Depth Control  
Rotary control for selecting the depth of  
compression. Note: This control works in  
conjunction with input Gain control (3).  
5. Deep Switch  
Push switch to add extra bottom to the low end of  
the primary EQ.  
The input Gain control should be used to set the  
threshold level and the Depth control to select the  
amount of compression.  
6. Low Prim ary EQ Control  
Rotary control that gives + or - 15dB cut and  
boost of the lower end of the primary EQ.  
12. Com pression Threshold Indicator  
LED which indicates when the compression  
threshold is reached.  
 
4
13. Com pression On/Off Push Switch  
Push switch which activates the compression  
19.Tuner Output J ack  
Instrument level buffered output for direct  
circuit.  
connection to an electronic tuner.  
14. Volum e Control  
Rotary control to set the overall output level of  
20. Effects Send J ack  
Jack socket to connect to the input of an external  
the amplifier.  
effects processor.  
15. 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.  
21. Effects Return J ack  
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).  
16. Power Switch  
22. Line Output J ack  
Jack socket ideal for connection to home  
recording equipment.  
On\ Off mains power switch with LED indicator  
and featuring soft start circuitry to minimise switch  
on and switch off noise.  
23. Graphic Footswitch J ack  
Jack socket for the connection of a single  
On/Off footswitch for the Graphic EQ.  
Models 7200, 72115 & 72410  
Rear Panel Functions.  
17. Mains Input Connector  
24. Balanced D.I. Output  
For direct connection to recording or PA mixing  
For connection to mains power supply.  
desks and switchable pre or post EQ (15).  
18. Twin Speaker Outputs  
For connection to loudspeakers. The minimum  
25. D.I. Level Selection Switch  
Selects 0dB or -20dB D.I. output levels for  
total load is 4 Ohms.  
maximum interfacing flexibility.  
-72115  
26. Earth Lift Switch.  
As the impedence of the internal 15" speaker is 8  
Ohms, the connection of an extension cabinet (8  
Ohms only) is possible.  
For the elimination of earth loops when  
connecting to other earthed equipment.  
-72410  
Please Note:  
As the impedence of the internal speakers is 4  
Ohms, it is NOT possible to connect an extension  
speaker.  
Models 72115, 72410 are fitted with castor cups, castors  
can be ordered directly from Marshall Amplification plc.  
Please use stock code: ‘CSN’ when placing your order.  
The Cabinet Range  
Using the design skills and production techniques developed at Marshall Amplification over thirty two years,  
we have produced two cabinets which are perfectly suited to the new 7200 Dynamic Bass amplifier which can be  
used singly or together.  
Both cabinets use the highest grade birch ply and are ported and braced to exactly complement the specially  
designed, heavy duty loudspeaker units.  
Model 7041 4x10 with horn (400 watts RMS -8 Ohm s).  
The 4x10 with horn can handle a massive 400w RMS for compatibility with the 7200 or any other bass  
amplifier with standard quarter inch jack speaker connections  
For added versatility and to allow you to tune the 7041 to suit your style and sound, we have included an  
infinitley variable horn to boost high end frequencies.  
This cabinet delivers excellent full range response if used by itself or can form part of a stack system if used  
in conjunction with another 7041 or the perfectly matched 7015.  
Dimensions: Width 606mm x Height 606mm x Depth 370mm.  
Model 7015 1x15 (200 watts RMS -8 Ohm s).  
The compact 7015 gives an impressively full tonal response accross the whole bass frequency range -making  
it the ideal portable partner for the 7200 or as part of a Marshall bass stack in conjunction with the 7041. This  
cabinet is rated at 200 watts and features a specially selected heavy duty 15" speaker.  
Dimensions: Width 606mm x Height 606mm x Depth 370mm.  
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Front Panel.  
1.  
10.  
2.  
3.  
5.  
7.  
14.  
16.  
12.  
+15dB  
P RE- AM P  
BLEND  
+15dB  
INP UTS  
G AIN  
EQ UALIZ ATIO N  
LO  
CO M P RESSIO N  
VO LUM E  
P O W ER  
HI  
0
0
S
Y
S
T
E
M
S
Y
S
T
E
M
D.I.  
.
.
.
.
.
.
.
.
+15  
.
GRAPHIC  
.
S
V
-15  
+15  
-15  
DEEP  
BRIGHT  
PEAK  
HI  
LO  
-15dB  
PRE  
-15dB  
DEPTH  
S-SOLID STATE  
V-VALVE  
POST  
80  
160  
320  
640  
1250 2500 5000  
DYNAM IC BASS SYSTEM  
4.  
6.  
8.  
9.  
11.  
15.  
13.  
Rear Panel.  
20. 21.  
19.  
22.  
17.  
EFFECTS  
TUNER OUT SEND  
EFFECTS  
RETURN  
LINE  
OUTPUT  
M AINS INP UT  
230v -50 Hz  
SP EAKER O UTP UTS  
(200 Watts RMS)  
(Minimum Load 4 Ohms)  
500 VA  
GRAPHIC  
FOOTSWITCH  
D.I.  
LEVEL  
EARTH  
LIFT  
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.  
BALANCED D.I.  
OUT  
Manufactured in Great Britain by:  
Marshall Amplification plc, Bletchley, Milton Keynes.  
18.  
23.  
24. 25. 26.  
 

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