Nexo PS8 User Manual

TDCONTROLLER USER GUIDE
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P.1
7
PS15 Gain control (PS15TD only)
Two 12 dB range trimmers are
provided to set the gain of L&R (HF &
LF in active mode) channels. This
adjustment can be useful in active
mode where it is sometimes necessary
to correct the gain difference of
amplifiers which have different power
and constant sensitivity. The factory
position is in the middle (detent), which
correspond to 0 dB gain.
Enhanced protection trimmer (Protect)
The embedded trimmer located on the right side of the front panel (outside
the window) is used to lower the threshold of the protection system. When
turned fully to the left (marked Std), speaker protection is set for normal
operation. When turned fully clockwise (marked Max), protection is increased;
e.g. this setting should be used when the system is operating under badly
controlled conditions (eg. When amplifier gain are not known or sense lines
are not connected…). Middle positions of the trimmer can also be used and
are recommended in cases where extended periods of overload (e.g. in some
discotheque applications) are expected.
Peak Limiter adjustments (PS15TD only)
The PS15TD MK2 features three independent peak limiter trims, which allows the peak limiter to be set to
limit the maximum power of the amp (without affecting the protection threshold as implemented in the
earlier version of the PS15TD). The
peak limiter has no real cabinet
protection functions; it must be tuned
to avoid overdriving the amp that in
turn can generate obvious clipping
noise and very low frequencies
(caused by the modulation of the
power supply rails).
To set the peak limiter to the correct value, either turn the trimmer clockwise until the red LED lights at the
same time as the amp’s clipping LED, or use the graduation (power value given for 8 Ω load).
Active & Power LED (PS15TD MKII only)
At the left side of the TDcontroller a green LED indicates the unit is powered, and a red one indicates the
active mode is selected.
LF Eq. (PS15TD MKII only)
This control increases (or decreases) of the Low
Frequencies (on both PS and LSub). It acts similar to a
shelving filter with a range of +/- 3 dB
-6
+6
-5
-4
-3
-2
-1
+0
+1
+2
+3
+4
+5
d
B
V
20 20k50 100 200 500 1k 2k 5k 10k
Hz

Nexo PS8 Specifications

General

Nominal Impedance	8 Ohms
Power Handling	200 Watts RMS
Connectors	2 x NL4
Type	Passive
Woofer	8"
Tweeter	1"
Recommended Amplifiers	100 W - 400 W at 8 ohms
Components	1 x 8" woofer, 1 x 1" tweeter