Mesa Rosette 300 Two:Eight, Руководство пользователя

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This fully featured, great sounding DI Section separates the Rosette as a fully professional performance tool that will shine in any
environment you put it in, in any size venue – from Club to Concert Stage to Studio.
DIRECT OUTPUT SOURCE
These switches select whether the channel DI Outputs capture either PRE-EQ or POST-EQ
signals from the individual channels. These outputs would most commonly be used where the control of individual channel levels
by the PA system might be helpful, and in that case, the DI SOURCE Select Switches would be set to PRE-EQ to allow the Front
of House engineer to equalize the signals and process them as needed for the FOH sound system and the venue’s characteristics
The POST-EQ signal routing might be selected when the amplifier is being used for multi-track recording, especially where a whole
ensemble is playing at the same time and where the EQ in use might be desired during tracking. These outputs are always pre-effects
(no effects present including those in the FX LOOP) because the take-off points occur before the effects are generated. There is no
PRE/POST EQ switch available on the Summed DI OUTPUT because the signals are already equalized before being combined, and
this output also includes the effects signal, regardless of where they are derived from (Internal Effects or FX LOOP).
DIRECT OUTPUT LEVEL
These mini toggles select the DI OUTPUT signal level between MIC Level (approx. -30dBu) and
LINE Level (approx. +4dBu) depending on the needs of each particular application. While most pro level mixing consoles can handle
LINE level signals, that’s not always the case with intermediate and lower level consoles, which may require a lower MIC Level signal
to prevent overloading of their Inputs. Recording interfaces (A/D Converters) for studio work, however, are generally equipped to
handle (and often can only accept) LINE Level and the same also applies to powered speakers. Ultimately, this DI Level switch allows
you to best match whatever the requirements are of the equipment you are connecting the DI OUTPUTS of your amplifier to, so set
this switch according to those needs and you will always enjoy great DIRECT performance from your Rosette.
PIN 1 LIFT (DI OUTPUT)
These switches connect or lift the Circuit ground/earth/common connection from Pin 1 on the XLR
DI OUT connector. Balanced Outputs do not rely on the Pin 1 (shield) connection to transmit signal to the PA’s (or studio’s) console.
While Pin 1 is always connected to the console’s master ground bus, often (due to differences in potential of a building’s ground/
earth system), small currents will flow between the grounds if there is a common connection, resulting in hum. By lifting the ground
at the sending (amplifier) end, this allows the shielding to remain in place while breaking the ground current flow that is the cause for
inducing hum into the signal- carrying pair of conductors.
The one thing that complicates this is that at very high (radio) frequencies, ground is not “really” ground, so additional techniques are
incorporated within this network that allows 2 functional grounding spectrums within the same network, providing added RFI (radio
frequency interference) rejection. The general rule is to start with Pin 1 Lifted, and if there is noise, try connecting it. It should also be
noted that there are a lot of other possible causes for noise, this switch is a solution only for some ground loop noise(s) between the
PA’s console(s) and your instrument amplifier.
Enjoy your new amplifier!
That wraps it up for the Controls and Features of your Rosette Amplifier. Exercise a little patience
the first couple weeks of ownership and learn the Controls. You will be well rewarded for your time
spent with years of enjoyable performance.
Thank You for your support and for trusting us to be your Amplifier Company. We never take it for
granted and we wish you countless hours of fun, inspiration and enjoyment from your new instrument.
Feel free to reach out to us anytime you may need assistance. We’re always glad to hear from you!
From the Entire MESA/Boogie Family; Welcome and Enjoy!
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