Dan D'Agostino Monoblock amplifier, Owner'S Manual

Page: 7 / 9

Sound comes from only one channel
Follow the below steps in order. If one of these steps succeeds in restoring the sound, stop
there and ignore the other steps.
1. Check to make sure the power meters on both amplifiers are illuminated. If one
amplifier’s meter is not illuminated, follow the troubleshooting steps under “Amplifier
will not power up” to restore power to that amplifier.
2. Check speaker cable connections for the malfunctioning channel. Reconnect any
cables that may have become disconnected. Inspect the cable to make sure it has
not been damaged. If it has been damaged, replace it.
3. Swap the left-channel interconnect cable from the preamp to the amplifier with the
right-channel interconnect cable. If the malfunctioning channel now works but the other
channel does not, replace the defective interconnect cable with one of the exact same
type. You may have to replace both right and left cables to make sure they match.
4. Swap the left-channel interconnect cable from the source device to the preamp with the
right-channel interconnect cable. If the malfunctioning channel now works but the other
channel does not, replace the defective interconnect cable with one of the exact same
type. You may have to replace both right and left cables to make sure they match.
5. Try using a different source device. If the alternate source device delivers sound in both
channels, it is likely the original source device is defective.
6. If possible, try using a different preamp. If the alternate preamp delivers sound in both
channels, it is likely the original preamp is defective.
7. If all of these steps fail to restore sound, consult your dealer for service.
Sound seems unclear or unfocused
Follow the below steps in order. If one of these steps fixes the problem, stop there and ignore
the other steps.
1. Play a CD (not a record) of a vocalist and sit in your usual listening position, which should
be equidistant from each speaker and typically 8 to 15 feet away from them. If the vocal
image appears centered between the speakers, they are connected correctly and your
system is probably operating properly.
2.
If the vocal image is unfocused and the vocal seems to come from all over the room,
your speakers are probably wired out of phase. Make sure that the speaker cables on
both of your amplifiers are connected correctly. The cable connector or
colored red should be connected to the speaker binding post with the red ring. The
cable connector marked - or colored black should be connected to the speaker
binding post with the black ring.
3. If the sound is still unclear or unfocused, consult your dealer. Your system may have a
setup problem outside the scope of this manual.