Revel sub15 Guida Utente
Figure 16. Frequency response of
the ULTIMA SUB-15/LE-1 in
a typical room without Room
Gain Compensation.
4. After making the adjustment, note the phase reading on the
ULTIMA LE-1’s LED display. (Don’t forget that after a period
of inactivity, the readout switches from phase to level.) Then,
turn off all system power.
of inactivity, the readout switches from phase to level.) Then,
turn off all system power.
5. Switch the + and – connections on the ULTIMA SUB-15(s)
to their original, in-phase connections.
6. Turn on all system power.
ROOM GAIN COMPENSATION
At very low frequencies, most listening rooms exhibit a rising
response known as Room Gain, as shown in Figure 16. While
many audiophiles find this effect desirable, we’ve included a Room
Gain Compensation circuit in the LE-1 that can be used to com-
pensate for this gain to achieve ultimate accuracy in most rooms.
When activated, it will equalize the low bass frequencies for a flat-
ter response and will also significantly increase the dynamic range
capability of the ULTIMA SUB-15(s), while reducing distortion.
To activate (or defeat) Room Gain Compensation:
response known as Room Gain, as shown in Figure 16. While
many audiophiles find this effect desirable, we’ve included a Room
Gain Compensation circuit in the LE-1 that can be used to com-
pensate for this gain to achieve ultimate accuracy in most rooms.
When activated, it will equalize the low bass frequencies for a flat-
ter response and will also significantly increase the dynamic range
capability of the ULTIMA SUB-15(s), while reducing distortion.
To activate (or defeat) Room Gain Compensation:
1. At the listening position, aim the ULTIMA LE-1 Remote
Control at the ULTIMA LE-1 and press FREQ EQ once to
activate Room Gain Compensation. To defeat it, press FREQ
EQ once more.
activate Room Gain Compensation. To defeat it, press FREQ
EQ once more.
NOTE: On the ULTIMA LE-1’s front panel, a LOW FRE-
QUENCY OPTION LED indicator will illuminate whenever
Room Gain Compensation is on. Room Gain Compensation may
also be turned on and off by pressing the FREQ EQ IN/OUT
switch, located on the rear panel (see Figure 7 on page 14).
QUENCY OPTION LED indicator will illuminate whenever
Room Gain Compensation is on. Room Gain Compensation may
also be turned on and off by pressing the FREQ EQ IN/OUT
switch, located on the rear panel (see Figure 7 on page 14).
2. Listen to a variety of sources and alternately press the FREQ
EQ button (on and off ) to judge whether to select the effect.
ULTIMA SUB-15/LE-1
Owner’s Manual
27
20
0.0
2.5
-10.0
-7.5
-5.0
-2.5
5.0
7.5
10.0
Log Frequency (Hz)
Level
(dB)
100
1,000
10,000
IMPORTANT