I.
1
Thank You
I.
3
Warning
For personal safety, please read this user
manual and warning thoroughly before using the
equipment. To reduce the risk of electric shock,
it is essential that the unit is disconnected from
the mains supply before removing the cover. The
Delta Transconductance band Compressor uses
thermionic vacuum electron tubes and works on
a lethal voltage up to 300 volts. Even after a
long period of disconnection, components can
still be charged.
Use and store the Delta Transconductance band
Compressor only in studio conditions. Do NOT
operate the Delta Transconductance band
Compressor in a hazardous area, near water
or moisture.
Due the amount of tubes, the Delta
Transconductance band Compressor
generates heat.
However the unit should never run this hot so that
it makes it untouchable. Ensure that adequate
ventilation is provided(see II.2).
In the event that this unit has been suffered an
impact, an electrical safety test must be carried
out before reconnection to the mains supply.
Refer servicing of the unit to qualified personnel
only.
For choosing the Electric Signal Delta
Transconductance band Compressor and trust
in us.
Eletric Signal has the mission to ensure the
professional audio engineer has reliable, high
quality equipment.
By knowing the status quo, annihilating the
dogma’s and standing on a many shoulders,
Electric Signal is always innovating. Pushing the
envelope further and tries to leave the real
decisions for the engineer. By knowing we are
only a switch in the chain we try to achieve to
give the engineer the maximum potential by
providing him the relevant choices.
It is tough to vocolise, however Arthur
Shoppenhauwer writes in ‘the world as will and
reprentation’
“The effect of music is so very much more
powerful and penetrating than is that of the
other arts, for these others speak only of the
shadow, but music of the essence.”
Electric Signal MMXV AD
Page 5
Delta Transconductace band Compressor
User Manual
Page 6
The Delta Transconductance band compressor
is a vacuum tube based three band compressor
and is essentially three stereo compressors, a
three band passive crossover filter and a tube
based mixer
For the compression, the delta mu technology
is used. The 6386 tiode, used in many classic
compressors is ideal for this task, nowadays
difficult to obtain. Therefore the Delta
Transconductance band Compressor uses the
6ba6/5749 penthode in triode configuration and
has the same characteristics as the 6386 triode.
I.
2
Introduction
Like all delta mu compressors, balance needs to
be (re)calibrate to cancel out 2nd order
harmonics. Therefore these calibration settings
are on the front panel. To make proper settings
there are sockets on the front panel to measure
the (in)balance.
Furthermore, solid state components are used
in the power supply and the side chain. There are
no integrated circuit's, electrolytes or transistors
in the audio chain. The input and output are
transformer balanced.
The controls on the front panel are toggle
switches or rotary switches, so recall is possible.
These switches control relay based attenuators,
never touch the audio signal directly and
make a short as possible audio chain.
