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10. OPTIONS
10.3. Option: HP 700 SE with control unit
Legend
(25)
Output
selector
switch
Here, the three outputs RCA 1, RCA 2, and XLR can be activated
separately and in groups. In the ALL ON setting, all three Outputs are
active and can be used simultaneously. The settings RCA 1 and RCA 2,
or RCA 1 and XLR are intended for Bi-Amping configurations, each with
a separate power amplifier (e.g. a headphone amplifier). The separate
power amplifier can then be operated on XLR or RCA 2.
(26) + (27) Pre-level
control –
left and
right
channel
The Level L and R controls are used to precisely reduce the channels in
1 dB increments separately for each channel. This allows for the
accurate adjustment of the reproduction balance. The controls are step
switches, ensuring exact accuracy and absolute long-term stability. The
controls are bypassed in the 0 dB setting. Control is frequency-
compensated and thus does not negatively affect the quality of the music
signal. Frequency-compensated attenuators originate from high-
frequency technology. Compared to more simple, non-compensated
variants, their advantage is that the frequency bandwidth and phase shift
are not affected.
(28)
Rotary
knob for
activating
the tone
control
When the tone control is on, the TC LED on the front illuminates. When
the tone control is off, the electronic control system is bypassed
completely.
(29) + (30) Bass and
treble
controls
These controls allow for precise raising and lowering of the bass and
treble. One scale mark corresponds to +/- 3 dB.
The control unit is a special feature of the HP 700 SE. The combination of
level adjustment
and the
tone control
allows for a more precise correction of reproduction under unfavorable conditions, be it
due to the room acoustics or the sound carrier.
The
level adjustment
(individual volume control per channel) is virtually indispensable if the
loudspeakers are placed at different distances to the listener (e.g. due to spatial reasons). The level
control can be used to adjust the channels to the listener
without losing audio quality
(see (26) +
(27)).
The
tone control
is achieved through tube technology and ensures a homogeneous sound pattern.
