JBL SDP-3 Installation & Technical Manual page 21

System
Configuration
(dB)
9.0000
7.0000
5.0000
3.0000
1.0000
-1.000
-3.000
-5.000
-7.000
-9.000
20
Bass Tone Control Frequency Response
Tilt
(dB)
5.0000
4.0000
3.0000
2.0000
1.0000
0.0
-1.000
-2.000
-3.000
-4.000
20 100 1k
(Hz)
Tilt Control Frequency Response
Loudness
(dB)
0.0
-10.00
-20.00
-30.00
-40.00
-50.00
-60.00
-70.00
-80.00
20 100 1k
(Hz)
Loudness vs SDP-3 Volume control
(front left)
12
100 1k 10k 20k
(Hz)
The Tilt parameter can be thought of as a straight line that pivots on a
fulcrum at 1kHz to correct the overall tonal balance of source material.
The range is -3.0dB to +3.0dB, referenced to the Treble level. This
control, adjustable in 0.2dB increments, is useful on many older
recordings, or when the desired tonal balance cannot be achieved at the
listening position. The Tilt control does not alter the tonal balance of the
rear or side speakers.
10k 20k
A Loudness Contour parameter which boosts bass information, pro-
vides more balanced reproduction at low volume listening conditions.
Once you have calibrated SDP-3 output levels, set the LOUDNESS
parameter ON to provide the ideal amount of boost for any given volume
setting. This parameter does not affect the sound of the rear or side
speakers.
10k 20k
(dB)
9.0000
7.0000
5.0000
3.0000
1.0000
-1.000
-3.000
-5.000
-7.000
-9.000
20 100 1k
(Hz)
Treble Tone Control Frequency
Response
JBL Synthesis
10k 20k