In , on 04/10/05
at 11:08 AM, T said:


[ ... ]
The Receiver has a single SUB output jack
[ ... ]

The RCA subwoofer output jack on a surround sound receiver is MONO and
any frequencies that don't belong to the subwoofer have been removed.
In the setup menu for the receiver, claim that the front and/or rear
speakers are "small" if you want bass that normally would be routed to
them to be withheld and routed to the subwoofer instead.

Assuming you have an appropriate amount of power and a capable
subwoofer, it doesn't matter if you use an external amplifier or an
amplifier built into the subwoofer.

The subwoofer is MONO even if it has a left and a right input.
Connecting to only the left or right input decreases the output level a
bit, but you can easily compensate for that by turning up the level
adjustment. (You will have to adjust the level anyway so that the
subwoofer output matches the main channels.)

A dual coil passive subwoofer appears as if it is two speakers. If you
use both coils, your amplifier will behave as if a second speaker has
been added. (Depending on who is lurking on the news group, this
statement may create some "flames". If it does, draw your own
conclusions after the flames have died down a bit.)

Passive subwoofers don't usually include level controls. Hopefully, the
gain of the external amplifier is variable or compatible with the
subwoofer output adjustment range of your receiver and the subwoofer
efficiency. It's a complex discussion when debating if the power
handling capability of the subwoofer would be much different when
driving one or both coils. True, the impedance seen by the amplifier is
different, but all the heat from the subwoofer coils is being dumped
into the same confined space in any case.

Make sure that the subwoofer's internal crossover does not fight with
the signal sent by the receiver.

-----------------------------------------------------------
spam:
wordgame:123(abc):14 9 20 5 2 9 18 4 at 22 15 9 3 5 14 5 20 dot 3 15
13 (Barry Mann)
[sorry about the puzzle, spammers are ruining my mailbox]
-----------------------------------------------------------