ACTIVE INPUT
The Active input jack should be used with instruments having a built-in (on-board) preamp that will pro-
duce signals over 1 volt RMS. Known basses that should use the Active input only are the Kubicki X-
Factor and some Ovation electrics. Some really "hot" pickups installed in your instrument may find the
Active input more compatible. The best judge is your own ears.
Please Note: Using the Active input with passive basses may result in a loss of high-end transients.
Players who roll off their high-end starting at around 2K to 3KHz may find this input more to their liking.
If you hear some distortion from your active bass and are using the Active input jack, CHECK YOUR BAT-
TERY!! Also, make sure the Preamp Clip LED is not lighting.
PREAMP CLIP LED
The Preamp Clip LED will light whenever the Preamp, Tone section or output buffer reach clipping (run
out of headroom). In the event the Preamp clip indicator lights, turn down the Gain control. Since the
Preamp Clip also monitors the Tone section, boosting any one of the tone controls can cause the LED to
activate. Again, turn down the Gain control if this happens.
Please Note: Constant clipping of the preamp will not harm the electronics in your Workingman's 4004.
However, damage can occur to speakers due to near-DC content present in a clipped waveform. Do not
defeat the limiter when overdriving the preamp.
GAIN CONTROL
The gain control adjusts the volume of the preamp section. After the Tone controls, Aural Enhancer and
any effects you may be using have been set to your liking, the Gain control should be set to where the
Preamp Clip LED barely flashes upon hitting your loudest note. After setting the Gain, use the Master
Volume to set the desired volume level. Using these controls in this manner assures the maximum sig-
nal-to- noise ratio with no distortion caused by the preamp circuits clipping. Since the Gain control is
similar to a "pad", a small amount of signal will get through with the Gain control turned all the way
down. The Gain also adjusts the level sent to the Effects send jack. If your effect is being overdriven,
turn down the Gain Control.
USING THE TONE CONTROLS
To get the most out of the Tone Controls of your Workingman's 4004, it would be best to first under-
stand how the Aural Enhancer works, and how it interacts with the 5 band EQ section. Think of it as a
variable tone curve, changing with its position. As you raise the control from its "0", or fully counter-
clockwise position, you are elevating the whole range of sound (lows, mids, and highs) at frequency
points different than those selected for the individual EQ bands. This remains true up to about the "2
o'clock" position, at which point the mids start to drop off. The curves involved here are gentle, as
opposed to the very extreme curves you can create with the EQ Controls. Most significantly, the Aural
Enhancer will raise the low end at a point lower than the Bass control itself. For a 4-string bass, the
Bass control itself will suffice. For the 5-string player, the Aural Enhancer will help bring out the funda-
mentals of your instrument in the 30-60Hz range.
WORKINGMAN'S 4004 • 8