[taffy]

ok guys not overly good at this but now have a 18 year old who wants to
be deaf.....

i need to wire a dragster db205 2 channel amp 50w RMS to a car stereo
with a subwoofer to boot

on front of amp: L GAIN speakers mono REM
GND B+
R + - +
-


subwoofer has 2 wires going to it


what goes where and why. sorry if this is a bit basic!!

[Matt Ion]

taffy wrote:
ok guys not overly good at this but now have a 18 year old who wants to
be deaf.....

i need to wire a dragster db205 2 channel amp 50w RMS to a car stereo
with a subwoofer to boot

on front of amp: L GAIN speakers mono REM
GND B+
R + - +
-


subwoofer has 2 wires going to it


what goes where and why. sorry if this is a bit basic!!

GND goes to a solid body or chassis ground in the car - generally, grind off a
bit of paint down to the metal beside where the amp is going and attach the wire
there (or you can go to an existing bolt, if there is one).

B+ goes directly to the car battery... size of the wire needed will depend on
the actual current draw of the amp, but something in 8-10ga. should suffice
(ground lead should be the same size). Be sure to put a fuse holder in this
wire, BY THE BATTERY - this provides protection against fire if the wire should
short anywhere along the way - and use a fuse the same rating or slightly larger
than the amp's own fuse.

GAIN knobs adjust the input level for each channel.

SPEAKER terminals should be self-explanatory - Look at the speakers and match up
the + and - connections on them with those on the amp.

REM is the remote turn-on lead - this connects to the REM, AMP or ANT lead on
the deck, and is there to trigger the amp to turn on when the deck is on, and
off when the deck is off.

If you want to run the whole stereo off this amp, you'll need passive crossovers
to split up the signal: low frequencies to the sub, higher frequencies to the
other speakers.

What's probably preferable in this case is to leave the other speakers connected
to the deck as they already are, and just run the sub off the amp. If the amp
has a built-in crossover (may be a swich labeled "low-pass" or "LPF"), you need
to enable that... if the deck has a separate labeled subwoofer output, connect
the amp inputs to that. Otherwise you may need to invest in a crossover, again,
to filter out the high frequencies from getting to the sub. An electronic unit
is more flexible and goes between the amp and deck; a passive unit is simpler
and cheaper and goes between the amp and sub.

Either way, you'll want to run the amp in "mono" mode - connect the sub as shown
by the "mono" markings on the amp, and if there's a mono switch, flip that as well.