Quest Engineering Q1K, Owner'S Manual

Page: 7 / 12

6
DIP Switch Settings
CH1 85Hz High Pass Filter 1
2
3
4
CH1 100Hz Low Pass Filter
CH2 85Hz High Pass Filter
CH2 100Hz Low Pass Filter
DIP Switch Settings:
CH1 85Hz High Pass Filter 1
2
3
4
5
6
7
8
CH1 100Hz Low Pass Filter
CH2 85Hz High Pass Filter
CH2 100Hz Low Pass Filter
Low Impedance Bridge Mode
(summed inputs - ganged gain controls)
High Impedance Bridge Mode
(summed inputs - ganged gain controls)
Summing Mode
(summed inputs - individual gain controls)
Ground Lift
DIP Switch Settings:
CH1 85Hz High Pass Filter 1
2
3
4
5
6
7
8
9
10
11
12
CH1 100Hz Low Pass Filter
CH2 85Hz High Pass Filter
CH2 100Hz Low Pass Filter
Low Impedance Bridge Mode
(summed inputs - ganged gain controls)
High Impedance Bridge Mode
(summed inputs - ganged gain controls)
Summing Mode
(summed inputs - individual gain controls)
Ground Lift
Meters Mode
Auto Sleep Enable
Dimmed Lighting Mode
Front Panel Lock
DIP Switch Settings:
Figure 1.04
1. 85Hz 4th order Butterworth High Pass Filter
for Channel 1 (when off the fixed 35Hz 4th order
Butterworth High Pass Filter is enabled).
2. 100Hz 4th order Butterworth Low Pass Filter for
Channel 1.
3. 85Hz 4th order Butterworth High Pass Filter
for Channel 2 (when off the fixed 35Hz 4th order
Butterworth High Pass Filter is enabled).
4. 100Hz 4th order Butterworth Low Pass Filter for
Channel 2.
5. Low Impedance Bridge Mode (Figure 1.06)
is used when bridging the amplifier for low
impedance loads (i.e. <8
Ω , non 70V loads). In
this mode the amplifier performs a soft-reboot,
mixes both input channels together, then channel
gains are ‘ganged’. Ganged channel gains
means that either rotary encoder will affect both
channels, and the ratio between each channel’s
gain remains the same. For example, if you set
Channel 2 to maximum, and Channel 1 to 50%
level then enable Low Impedance Bridge Mode –
both channel gain settings will remain the same
level apart no matter which rotary encoder is
operated. Remember to set individual levels prior
to enabling this mode.
6. High Impedance Bridged Mode (Figure 1.06)
is used for high impedance loads (i.e. 8
Ω - 70V
loads). In this configuration, the channel gains are
‘ganged’ as they are in Low Impedance Bridge
Mode, and operate in the same way. Both input
channels are also mixed together. This mode also
allows for 70V operation.
7. Summing Mode (Figure 1.07) mixes both
input channels together, and channel gains are
individually controllable.
9. Meters Mode alters the operation of the
illuminated ‘Q’ Device, and uses them to display a
representation of both channel levels as a Meter.
10. Auto Sleep Enable allows the amplifier to enter
sleep mode 30 minutes without an input signal
(above the threshold for signal LEDs on the front
panel). Wake up time is ~3 seconds. Sleep Mode
complies with ErP (1275/2008/EC) < 0.5W mains
consumption.
11. Dimmed Lighting Mode sets the front panel ‘Q’
device illumination to a lower brightness.
12. Front Panel Lock disables the rotary encoders
and is useful when permanently installing the
product.
DIP Switch Functions in Detail