Gamut DI 150 Manuel utilisateur
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DI 150
Contents
Contents of the DI 150 box 3
Safety instructions 4
Warning: 4
Never: 4
Always: 4
About the GamuT DI 150 5
Design considerations 5
Electrical circuits considerations 5
Unpacking 5
Placement 6
Connecting to the mains 6
Connecting to other equipment 6
Inputs 6
Outputs 7
How to operate 8
Selecting a source 8
Adjusting the listening level 8
Mute function 8
HTH Direct 9
Recording from an input source 9
The remote control 10
Overview 10
Functions 11
Burn-in and warm up 12
Burn-in 12
Warm up 12
Maintenance 12
Service 12
The protection circuitry - a second of silence 13
Technical information 14
Every musical note... 15
3
Contents of the DI 150 box
One GamuT DI 150 integrated amplifier•
One mains cord with plug for either 115VAC or 230VAC•
One GamuT RC1 amplifier/CD-player remote control unit•
Two AAA batteries•
Sandgaardsvej 31
DK-7400 Herning
Denmark
Telephone no: +45 70 20 22 68
Fax no: +45 59 43 97 26
www.gamutaudio.com
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DI 150
Safety instructions
Warning:
To prevent fire or shock hazard, do not expose this appliance to rain or moisture.•
No user serviceable parts inside. Refer servicing to a qualified technician. Never remove the•
cover unless qualified to do so. This unit contains dangerous voltages.
Never:
Let children (or grownups) push anything into holes or slots in the case - this could result in•
harmful electrical shock and could cause damage of the equipment.
Guess or take chances with electrical equipment of any kind - it is always better to be safe than•
sorry.
Obstruct the necessary all-around ventilation: especially DO NOT place the set close to curtains•
or on soft furnishing such as carpets. Overheating can cause unnecessary damage and shorten
the lifespan of the equipment.
Always:
Read the user manual and familiarise yourself with the functions before you attempt to use this•
equipment.
Ensure that all electrical connections (including the mains plug, extension leads and intercon-•
nections between pieces of equipment) are properly inserted and set in accordance with the
manufacturer’s instructions.
Check that the GamuT DI 150 mains fuse rating is set correctly for your local mains voltage.•
Please see the label next to the mains inlet.
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About the GamuT DI 150
The DI 150 arises from the wish to combine two high-end audio components into one while compro-
mising neither the quality of design nor the electrical circuits.
Our overall goal was to create the best sounding integrated amplifier available.
Design considerations
The cabinet is of a rigid construction and uses massive and genuine high grade materials, such as alu-
minium and stainless steel. This does not only contribute to the touch and feel factor, but is essential
for a long-lasting life even in a tough environment.
A GamuT product is built to be used daily and we expect our products to be in the “field” for many
years to come.
Under normal circumstances the DI150 should not need inspection or service for quite a while. The
capacitors, for instance, have a promised lifespan of 10 years without degrading.
Electrical circuitry considerations
All components used in the DI 150 are of the highest quality and have been selected through intensive
listing sessions from the PCB itself over the non-magnetic chassis to the WBT output terminals.
The DI 150 is based on following GamuT specialties:
Dual-FET hybrid input buffer•
Single power MOS-FET output circuit•
Extremely powerful power supply with high bandwidth and low impedance•
A unique protection circuit that ensures both the amplifier and the loudspeakers will survive•
severe faults, that normally would lead to critical damage to either or both units
Unpacking
Carefully cut open the box with a knife. Remove the cables from the carton and lift up the DI 150
from inside the box. Remove the protective plastic enclosing the amplifier. Please be careful not to
place the amplifier on the front panel or bend the various terminals on the backside when doing so.
Please keep the packaging material in a safe place as it might come in handy later.
6
DI 150
Placement
The DI 150 will get hot during use. It is important that it has free space all around the amplifier, espe-
cially the sides and the top.
Connecting to the mains
Your DI 150 has been especially made for the country to which it has been shipped. Any attempt to
change the voltage or other types of modifications should be considered unsafe and may cause dam-
age to both the amplifier and any connected equipment. Warranty is annulled by any form of modifi-
cation performed by any person not authorised by GamuT.
Connect the DI 150 to the mains supply with the supplied IEC mains cable.
For further improvements to the level of sound quality, various types of mains cable type may be
tested. Like the importance of any other cable in the system, the quality and refinement of the
mains cable has influence on the total balance of the sound. Please feel free to experiment with the
various brands available in your country. Please note that GamuT cannot accept responsibility for
damage incurred due to improper usage, connection, or manufacture of other cables than the
enclosed.
The mains switch is located underneath the amplifier’s front right corner. Before switching on the
amplifier, make sure that volume is reduced to or near zero. After switching on the amplifier, you will
hear two small clicks from inside the amplifier and possibly also one from each speaker.
Connecting to other equipment
The GamuT DI 150 features six signal level inputs and three available outputs;
Inputs
Four unbalanced inputs:
CD•
Tuner•
Tape•
HTH (bypass option)•
Two Balanced inputs:
Bal 1•
Bal 2•
Please note that all connectors of the DI 150 are gold plated. This is done to ensure long lasting and
stable connections. Only use cable and connectors either gold or silver plated.
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All of the inputs are line level inputs. If a turntable is to be connected, a separate RIAA amplifier
must used in between the turntable and the DI 150. You can use any of the inputs you like.
The HTH input also features a “direct” function. Please refer to the section “how to operate”
The DI 150 also features two sets of balanced inputs. We follow the international IEC standard for the
balanced connections; please ensure that the connected equipment complies with the following:
Pin connection of the XLR.
Ground1.
Positive2.
Negative3.
Some other brands have Pin 2 and 3 reversed. They will work, but the absolute phase will be reversed.
You can solve this by reversing the wires in the male plug of your balanced interconnects.
The two balanced inputs can be used for any balanced signal source such as a CD player or a separate
D/A converter. You can also use them with a pair of RCA female/XLR male adapters for further con-
nection of unbalanced sources.
Please note that the adapters are not included in the standard packing, but are available at the deal-
ers.
Outputs
What goes in must come out!
The DI150 offers you plenty of options when connecting:
One pair of unbalanced signal line out•
One pair of balanced signal line out•
One Tape out•
One pair of speaker out•
The unbalanced and the balanced line out, enable you to connect the DI150 to an external power
amplifier to either bi-amp or drive a second set of loudspeakers. You can also use the line out to feed
an active subwoofer. In any case; the signal of the output follows the selected level and source.
The Tape out is intended to be used for an analogue recording device. It has a fixed level that follows
the actual input level with unity gain.
It also has its own buffer amplifier, so that the recording device load does not disturb the main signal
path.
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DI 150
How to operate
Selecting a source
Select the desired source by pushing the but-
ton beside the name of the connected source.
A blue dot will light between the text and the
button to indicate the selected source. For ex-
ample to the right the CD input is selected.
The input selection can be toggled with the
remote control, please refer to the section
“Remote control”
Adjusting the listening level
In the middle of the DI 150 front panel you
will find the large volume control knob. On the
outside parameter of the knob a small blue dot
lights up to indicate the level setting. Turn the
knob by hand to the desired level. The scale
goes from approx 8 o’clock minimum level to
approx. 4 o’clock as maximum output level.
The output level can also be adjusted by the
remote control, please refer to the section
“remote control”
Please note: We have selected an expensive ALPS dual logarithmic potentiometer for setting the
listening level. To reduce noise, we have chosen a 1kOhm version. Such a potentiometer cannot make
the sound disappear completely, even when you turn it down to the lowest setting. If complete si-
lence is required, enable the Mute function described below.
Mute function
The DI 150 features a mute function that will
efficiently mute the selected signal. Push the
“mute” button to activate the Mute function.
The blue dot indicating the selected source
is now replaced by a dot indicating the mute
function is enabled as shown below.
Push the Mute button again to disable the mute
function and return to the previously selected
source and level. For your comfort and the
safety of your equipment, please ensure before-
hand that the volume knob has not accidentally
been adjusted further towards the maximum out-
put setting before you disable the mute button.
The Mute function can also be enabled and
disabled by the remote control, please refer to
the section “remote control”.
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HTH Direct
This function is intended for cases where the DI 150 is connected to a surround preamplifier or pro-
cessor. Enable the “direct” function by pushing the small switch situated at the left side of the HTH
input terminals on the backside of the amplifier.
Small characters at the HTH display now indi-
cate “direct”.
The “direct” function of this input will bypass
the volume control and lead the signal directly
the output stage of the DI 150. This converts
the DI 150 into a power amplifier, driving your
front left and right loudspeakers in a surround
setup.
While the HTH “direct” is enabled and the HTH input is selected, the remote controlled volume will
be disabled to avoid conflict with other remote control systems.
Recording from an input source
You can always record from the actual source selected using the Tape Out. Please note that the out-
put level will match the input level due to the internal buffer in GamuT DI 150.
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DI 150
The remote control
Overview
Open/close
A-B repeat
Repeat one/all
Program (CD 1 only)
Display dim
Remain (CD 1 only)
Direct track selection 1-10 / 10+
Play
Pause
Stop
Next track
Previous track
Fast forward
Fast backwards
Volume up
Volume Down
Next source toggle
Previous source toggle
Mute
Standby
Phase
CD player functions:
Amplifier functions:
Buttons present, but not in use:
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