Mesa Rosette 300 Two:Eight Owner'S Manual Download Page 15

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Parameter 2: controls the Low Cut Filter, turning the control counter-clockwise raises the low cut filter frequency.

Parameter 3: controls the High Cut Filter, turning the control counter-clockwise lowers the High Cut filter frequency.

EFFECTS BYPASS (CANCEL) LED

This LED indicates when the effects have been canceled (or muted/bypassed) by using

external footswitch control via the Rear Panel FX MUTE jack using a standard “latching type” tip-to-ground on/off footswitch. This
feature can be useful when tuning instruments by ear, and also for eliminating effects when using the microphone channel for vocals
while talking between songs. MESA sells latching FX ON/OFF footswitches separately through our Authorized Dealers and Distribu-
tors, our Parts & Accessories Online Store, or by contacting our Customer Service department.

POWER LED

This blue LED indicates that the amplifier is connected to a power source and is switched on, operating correctly.

If this LED is not on, double-check the power source, and be sure the power cable is firmly inserted into the IEC power inlet socket.

PROTECT LED

This red LED indicates that the amplifier has entered protect mode and is either protecting itself from an external

fault (such as a shorted speaker cable or defective speaker), or that there is an internal fault within the amp itself. Verify that it’s not
a fault external to the amplifier by disconnecting all cables (except the power cable) from the amplifier. If the protect LED is no longer
lit, the problem is most likely a bad speaker cable or defective speaker. Testing with a set of headphones can help to narrow down
the problem, as the headphone signal is derived post-power amp using a frequency compensated emulation network.

LIMIT LED

This amber LED indicates that the power amp is nearing maximum power and is entering the soft clip/limit mode.

Soft clip/limit mode mimics many of the desirable characteristics of tube amp output stage overdrive while eliminating common solid
state clipping artifacts. There is approximately 4dB of range on this circuit where, driving beyond this will cause gradual output stage
clipping. It’s acceptable for this amplifier to operate in output stage overdrive mode (if that’s the tone you’re after) with the LED flash-
ing roughly 25% of the time on.

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POWER SWITCH

This switch controls the main AC Power and is used to turn your amp on and off by internally discon-

necting the amplifier from the power source. This amplifier complies with the new EU Eco-design directive by providing a switched
“0.00 watt power consumption off-mode”. To protect your amplifier and maintain your Warranty, never alter the power cable in
any way. Always be sure to use a grounded outlet when connecting your amplifier to an AC power source. Failure to do so may
increase the risk of shock.

AC RECEPTACLE: STANDARD IEC TYPE

Your amplifier is equipped with a standard quick disconnect power cord

receptacle. The power cord supplied with your unit fits snugly in the receptacle, so always make sure the cable is seated all the
way home/to stop. If you misplace or lose the power cable, you can use any standard IEC type power cable for a time, but eventu-
ally you should replace it with the MESA part to ensure a snug fit and clean power is supplied to your amplifier. Believe it or not,
we have discovered over years of R&D that power cables can and do affect the sound of an amplifier, so it is for this reason we
suggest replacing a lost AC Cable with an original spec one from us should you ever misplace the original.

Again, NEVER alter your Power cable. Doing so will increase your risk of shock and possibly void the warranty. Always use a

ROSETTE

ACOUSTIC AMPLIFIER

Do not expose to rain, moisture

or thieves.

MADE IN PETALUMA, CA WITH THE WORLD’S FINEST MATERIALS

HEAD

PHONES

SPEAKER

OUTPUT

MUTE

FTSW