DESCRIPTION
The XN3210 and XN3410 use an unregulated MOSFET power supply for supe-
rior sound and output wattage. In addition, a toroid-coil is used to transfer power
with minimal performance loss due to heat. To avoid unwanted noise, a double-
sided conformal printed circuit board with strategically placed components keeps
AM RFI subdued.
All of the connections and controls for the XN3210 and XN3410 are conveniently
located at the ends of the amplifier and labeled appropriately. To ensure the best
possible electrical connections, the power, speaker, and RCA inputs are gold-
plated. An additional benefit of the XN3410 is the ability to create a 2, 3, or 4
channel amplified system with a flip of a switch (see Application section). In the
event of component failure or a short circuit, the XN3210 and XN3410 incorpo-
rate safe guards and outboard ATC fuses to prevent damage to the amplifier.
INPUT CONNECTIONS AND AUDIO CONTROLS
The front panel of the XN3410 and XN3210 contain both connections for RCA
and speaker level inputs, along with the audio controls as shown below.
Fig. 1
XN3410
1. CH1-CH2 High Input
2. CH1/CH2 RCA Input
3. CH3/CH4 RCA Input
4. CH1/CH2 Gain Control
5. CH3/4 Gain Control
6. Bass Boost
7. Source Select
8. CH1/2 Mode Switch
9. CH3/4 Mode Switch
10. CH3-CH4 High Input
11. CH1/2 Frequency Control
12. CH1/2 Crossover Mode Switch
13. CH3/4 Frequency Control
14. Frequency Range Multiplier
15. CH3/4 Crossover Mode Switch
16. Power Light Indicator