5
SYSTEM DIAGRAMS
The following diagrams illustrate connections for optimum operating impedance.
For maximum efficiency, the Class D amplifiers are optimized for a narrow range of
impedances. The DX 350 and DX700 will make full power at a total speaker impedance of
2 Ohms; the highest recommended load impedance for these models is 4 Ohms. The
DX1400 is optimized for 1 Ohm operation with a maximum load impedance of 2 Ohms.
Failure to adhere to these recommendations will cause amplifier malfunction or dramatic
loss of power.
You will notice that there are four screw terminals for connection to the woofer(s).
This is a mono amplifier and the two positive terminals are joined together inside the
amplifier, as are the negative terminals. Connection to only one of each of these terminals
is needed to get full output from the amp. Two positives and two negatives are supplied
to make it easier to hook up multiple woofers as shown in the diagrams.
Single 2ohm woofer for use with the DX350 orDX700
Three 8ohm woofers in parallel show a 2.66 ohm load to the amp.
Suitable for the DX350 and the DX700.
Using three 4 ohm woofers in parallel shows a 1.33 ohm load
to the DX1400 amp.
+
+
2 ohm
+
–
–
–
+
+
8 ohm
+
–
–
–
+
8 ohm
–
+
8 ohm
–
