Markbass TA 503 - Manual (Page 8)

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3.2 tA501 reAr PAnel
sPeAKer out
The TA501 can be connected to one or two speaker cabinets using either 1⁄4” speaker cables (do not use instrument cables) or speakon speaker cables. The two high-quality Neutrik SPEAKON COMBO jacks (22) (23)
are designed to accept either of these connection types. The TA501 delivers 300W of power into an 8 ohm cabinet (or two 8 ohm cabinets), or 500W into a 4 ohm cabinet.
lIne out
The balanced XLR (28) output allows you to connect your amplifier directly to a mixing console (either in live situations or in a recording studio) without the need of a DI box. Simply connect a standard XLR cable
from this output to the soundboard/mixing console, or a snake connected to the board/console. If the soundman/engineer needs more or less signal from you, simply turn the front panel LINE OUT (16) control up
or down as necessary.
Pre eQ / Post eQ
This SWITCH (24) determines whether the signal that leaves the LINE OUT XLR (28) is affected by your amplifier’s EQ settings (including the VLE and VPF filters) or not. In most cases, you will find that sound engineers
prefer to receive a pre-EQ signal. Note that the line out signal includes whatever effects you’ve connected through the effects loop.
ground lIft
Occasionally when you’re playing live and using the LINE OUT (28), the soundman will detect a hum from your amp’s signal. This is almost always due to a grounding problem related to your power source; you will
likely eliminate this hum simply by flipping the GROUND LIFT (29) switch.
tuner out
The TUNER OUT (25) is an unbalanced signal that can be sent to a tuner, allowing you to tune as you play without passing your signal through pedals, which can degrade the quality of your signal. You can also use
this output to send your signal on to another amp, or any kind of recording unit that doesn’t require a balanced signal.
effect send And return
If you use effect pedals or rack gear, you can route them through the SEND EFFECT (27) and RETURN EFFECT (26) on the rear panel of the amp. The effects loop is wired in parallel—this means that if something
happens to your effects chain (a battery dies or a cable gives out, for example) while you’re playing, you will not lose your main signal. If desired, however, the effects loop can be easily modified by authorized service
personnel to operate in series.
footsWItcH
The TA501’s optional footswitch has two on/off switches. One is a mute control that interrupts the output signal from your amp, but allows it through to a tuner, should you have one plugged into the rear panel. This
is handy if you need to tune discreetly during live performances. The other switch bypasses your EQ and filter settings. Blue LEDs (6) (13) on the front panel illuminate when these switches are turned “on”.