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SPEAKER
COMBINATION
1 x 2 ohm cabinet
HEADPHONE OUTPUT:
drive all common headphones and IEM ear pieces between 8 and 32 ohms (and many well above 32 ohms). It is not necessary to
have a speaker connected to the amp when using headphones, it is completely safe to operate the amp without a speaker
load. It's advisable to use caution whenever sticking a sound source in your ear, as damaging volume is possible, especially with
"bass player accidents", and when volume is factored over a long period of time. This output contains additional cabinet emulation
circuitry. This output should not be connected to anything but headphones, ear buds or IEM ear pieces.
MUTE/CHANNEL FOOTSWITCH:
button footswitch terminated with a 1/4" (6.35mm) tip-ring-sleeve plug. When the TIP is shorted to the sleeve, the signal is muted.
(Note that the front panel MUTE SWITCH must be in the down position for this function to work, otherwise, the front panel
switch over-rides the footswitch by placing the amp in mute mode regardless of the position of the footswitch). When in the
mute mode, the signal is available only at the tuner output jack, the signal is muted at the speaker output, headphone output, effect
send outputs and DI outputs. When the RING is shorted to sleeve, the channels will switch between the BOOGIE and SUBWAY
channels and the green LEDs will indicate which channel is selected (Note that the front panel CHANNEL SWITCH must be in
the down position for this function to work, otherwise, the front panel switch over-rides the footswitch by placing the amp
in BOOGIE CHANNEL mode regardless of the position of the footswitch). MESA sells SUBWAY TT-800 specific footswitches
(two button) separately through our authorized dealers and distributors, our parts and accessories online store, or by contacting our
customer service department.
EFFECTS LOOPS:
A serial (series) effects loop is provided for each channel, consisting of 1/4" (6.35mm) effects send and effects
return jacks. These jacks are line level, and a convenient PREAMP OUTPUT/ INPUT patch point that can be used in the following ways:
1. For connecting "serial" line level outboard effects devices such as compressors, limiters and gates, the effects send on the
amp would go to the input of the effects device and the output of the effects device would go to the return on the amp. The
loop may also be used with parallel outboard devices such as delays, reverbs, harmonizers and octavers, etc. by using the
wet-dry mix control on the outboard device to mix the dry with processed signal.
2. The effects send jacks can be connected to a direct box for sending each channel separately post everything except channel
volume and power amp emulation control.
3. The effects return jack on either (or both) channels can be used as an input from an external preamp (pedal or rack mounted).
This input feeds the respective CHANNEL MASTER VOLUME control and allows seamlessly integration with the channel
switching circuitry contained within the amp. You can substitute either or both on-board channels with your "favorite preamp"
while retaining the POWER AMP OUTPUT, HEADPHONE OUTPUT and POST-EQ DIRECT OUTPUT functions.
The effects loop's return jack contains a "normal switch" that interrupts the signal whenever a plug is inserted into the return jack,
and automatically bypasses the effects loop when the plug is removed. Only shielded instrument/line level signal cables (not speaker
cables) should be used for connections in the effects loop.
AUX INPUT:
This amplifier is provided with a 1/4" (6.35mm) TRS AUX input. This TRS stereo jack properly sums left and right
channels from an MP-3 player. i-device, or laptop as many of these new devices do not contain adequate circuitry for proper sum-
ming. The signal injection point is right after the CHANNEL MASTER VOLUME controls, you will need to use the player's volume
control to balance the level between your bass and the playback device. Note that for best performance, a 1/8" (3.5mm) TRS to 1/4"
(6.5mm) TRS cable (also called a stereo cable) should be used. This will always match between devices and allow the amplifier's
automatic summing circuitry to work properly. For upright players, this input can be used to plug the output of your upright's outboard
preamp (such as our Rosette, Subway or Subway Plus PRE-DI) into the power amp if you do not wish to use the channel switching
capabilities of the effects loop return. The level of this input is controlled by the volume on the external device such as the MP-3
player or the controls on your outboard preamp. Please note that this input is after the CHANNEL MASTER VOLUME controls
CALCULATED
LOAD
2 ohms
The SUBWAY TT-800 includes a 1/4" (6.5mm) TRS tip-ring-sleeve headphone output jack, which will
This dual function footswitch jack is used in conjunction with a standard latching two
IMPEDANCE SWITCH
POSITION
2 ohms
PAGE 11
POWER DISTRIBUTION
PER CABINET
100% to the single cabinet
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