User Manual

TNA ACTIVE LINE ARRAY SYSTEM
LIVE SOUND & INSTALLATION
Designed and Engineered in the UK by HH Electronics LTD.
© 2022 HH Electronics Ltd
STATUS
POWER
LIMIT
PROTECT
SIGNAL
INPUTINPUT SENSITIVITY
+10dB 0dB
XOVER
PHASE
70
75
80
85
90
95
100
110
120
FULL RANGE
LINK OUT
FULL
RANGE
LINK OUT
XOVER
DELAY
0
9
8
7
6
5
4
3
2
1
0
ms
0
.9
.8
.7
.6
.5
.4
.3
.2
.1
0
0° 180°
4
5
97
10
11
1
2
6
3
CONTROL PANEL
7. PHASE SWITCH: Pressing this switch reverses the phase of the onboard subwoofer output with respect to signal input. Signals from the
LINK OUT are un-affected.
8. LINE INPUT: A balanced XLR line input, suitable for balanced or non-balanced line level signals.
Please refer to the block diagram on page 8.
11. DELAY: Applies an audio delay to the internal loudspeaker to time align the subwoofer to your system. It can also be used to implement a
cardioid function when used with the PHASE CONTROL (7) and another TNA-1800SA. The DELAY duration is set via the two onboard
controls with left of the two providing millisecond increments and microseconds from the right control.
6. LIMITER INDICATOR: Illuminates just before the amplifier begins to clip. Adjust the INPUT SENSITIVITY and/or signal level from your
source so the indicator illuminates only briefly during peaks in the music. Continuous limiting of the signal will result in reduced audio quality and
dynamic content.
5. PROTECT INDICATOR: This illuminates if a fault condition occurs. The amplifier will shut down to prevent further damage with normal
operation resuming once the fault condition has been rectified.
4. SIGNAL INDICATOR: Illuminates to indicate that there is a signal present at the INPUT.
9. LINK OUT: A balanced XLR line output, suitable for sending a line level signal to an external device.
Please note: The Line input is not suitable for a mic-level signal.
1. INPUT SENSITIVITY: This control sets the input sensitivity of the TNA-1800SA. Turned fully anti-clockwise, the system will accept a nominal
+10dB signal such as that from a high output mixing console, whereas when set to 0dB it is more suited to lower-level inputs such as those from
PA link outs. +10dB sensitivity is recommended for most setups. Increase if you need more volume.
2. XOVER CONTROL: Adjust the full range frequency limit of the sub from 70Hz(fully anti-clockwise) to 120Hz(fully clockwise).
A full range setting is also included to aid setup and troubleshooting.
3. POWER INDICATOR: Illuminates when the unit is connection to the mains power supply and switched on.
10. LINK OUT SWITCH: With the Link switch disabled  (FULL RANGE) the LINK OUT signal is sourced from the LINE INPUT. With
LINK switch enabled  (XOVER) a HPF filter is applied to the LINK OUT set to the frequency determined by the XOVER Control (2).
The DELAY control does not affect the audio from the LINK OUT.
6
EN
EN
2 1
3
8
SUB-Cabinet 1
SUB-Cabinet 2
PHASE MISALIGNMENT AT THE CROSS OVER POINT PHASE ALIGNMENT AT THE CROSS OVER POINT
WOOFER PHASE ALIGNMENT