MartinLogan Sequel II - Manual (Page 13)

Page 13 Sequel II User's Manual
Bass Control Switch Bass Control Switch Bass Control Switch Bass Control Switch Bass Control Switch
On the rear panel of the Sequel II electronics
module, below the Signal Input
Signal Input Signal Input Signal Input Signal Input, is a two
position Bass Control Bass Control Bass Control Bass Control Bass Control switch that allows
you to select the type of low frequency
response you desire.
The 0 dB 0 dB 0 dB 0 dB 0 dB position is considered the normal
setting for most rooms. However, if you feel
that the bass in your system is too light
relative to the mid and high frequencies,
simply select the +2dB
+2dB +2dB +2dB +2dB position. This switch
position will increase the output of the woofer
by 2dB.
Some experimentation with these two switch
settings will allow you to find the optimal
tonal balance for your specific taste, room
and equipment. Below is a graph showing
how the +2dB switch setting affects the
frequency response of the Sequel II.
The very nature of Vertical Bi-amping Vertical Bi-amping Vertical Bi-amping Vertical Bi-amping Vertical Bi-amping dictates that both
amplifiers be identical. With Vertical Bi-amping Vertical Bi-amping Vertical Bi-amping Vertical Bi-amping Vertical Bi-amping, each of
the stereo amplifiers is dedicated to one speaker. For
instance, the left channel of each amplifier drives the low
pass section while the right channel drives the high pass
section. To Vertically Bi-amp
Vertically Bi-amp Vertically Bi-amp Vertically Bi-amp Vertically Bi-amp your Sequel II's you must
loosen the 5-way binding posts and remove the jumper
clips from both speakers. Starting with one speaker,
connect the left channel to the LO+
LO+ LO+ LO+ LO+ and LO- LO- LO- LO- LO- binding posts
and the right channel to the HI+ HI+ HI+ HI+ HI+ and HI- HI- HI- HI- HI- binding posts.
Repeat the same procedure for the other speaker. Connect
the left preamplifier outputs to both inputs of the left
channel amplifier and the right preamplifier outputs to both
inputs of the right channel speaker (See Figure 4).
20Hz 50Hz 80Hz 160Hz 250Hz
+2dB
Effects of the Bass Control switch
Figure 4. Vertical Passive Bi-amplification. One channel shown.