SWR Sound Super Redhead - Manual (Page 10)

8 • SUPER REDHEAD OWNER’S MANUAL
signal can be heard through the internal speakers or through the Headphone jack. This same proce-
dure can be used for playing along with a drum machine, sequencer, etc.
Note: Inser ting a plug into the Receive jack activates the Effects Blend control. The Effects
Blend control “receives” this command through the ground created when inser ting a 1/4" plug
into the Receive jack. Therefore, best results will only be obtained by using a mono phone plug.
If you must use a stereo plug, connect it by pushing in to the first “click” only.
If you are not hearing any effect through your speakers, check the position of the Effects Blend con-
trol on the front panel.
FAN ON/OFF SWITCH
In the “On” position, the Fan On/Off switch activates the internal cooling fan when the internal
heatsink reaches approximately 55 degrees C. The fan will shut off when the heatsink has cooled
down to about 45 degrees C. This action is controlled by an internal thermal switch located on the
heatsink.
The “Off” (or Defeat) position prevents the cooling fan from being operational. SWR recommends that
this position be used ONLY in situations where normal fan noise might be audible and therefore prob-
lematic—such as when miking the internal speakers in a recording situation. If you decide to defeat
the fan for extended periods of time, we recommend that you turn it back on and allow it to run
between songs, sets, etc. This way, the fan will be doing its job and will extend the life of the internal
components. Double check the position of this switch each time you use your Super Redhead.
Continuous use of the Super Redhead at loud volumes without use of the fan can cause the power
amp to overheat and possibly fail.
Note: If you hear the fan operating after use, we recommend that you allow the fan to run until
it turns itself off, prior to turning off the Power switch.
HIGH FREQUENCY ATTENUATOR
The High Frequency Attenuator adjusts the amount of high frequency heard through the horn/tweeter.
Turning the Attenuator control clockwise increases the signal; turning the Attenuator control counter-
clockwise decreases the signal. In the full counter-clockwise position, no signal will be heard through
the horn/tweeter. Recommended position for the High Frequency Attenuator is anywhere between
9:00 and 12:00 depending on your taste.
Note: Any clipping or unwanted distortion will be accentuated through the horn/tweeter. We have
found that players using an especially “hard” technique to strike the strings can cause the
strings to come in contact with the bass’s pickup and result in sharp spikes. If the clip indicators
are not lit and you hear distortion coming from the horn/tweeter, try playing a little “softer.” Also,
if using a bass with active electronics, check the battery.
INTERNAL SPEAKER CABLE
If you intend to use the Super Redhead’s internal speakers, make sure the speaker cable from the
chassis to the input jack is properly connected. Switching the internal speakers off via the Speaker
On/Off switch on the front panel will not harm the amplifier in any way.
EXTENSION SPEAKER JACK
The Extension Speaker jack is provided for connecting an external speaker enclosure. Adding an exter-
nal speaker cabinet will increase the overall volume of your system and give you a “fuller” sound.
When using an external speaker, make sure the total impedance of any external speaker enclosure(s)
is no less than 4 ohms (the Super Redhead is designed to drive a minimum impedance of no less
than 2 ohms). In most cases, we recommend the use of a single 8 ohm extension speaker.