musical signal and noise. This makes it hard to find the right Threshold setting. It is
entirelypossibleforthishummingandothernoisetorisetoalevelthatdeactivatesthe
and therefore becomes audible. My advice is to stay as far away from
transformersandpowerunitsasspaceallows.
Noise Gate
47WRITE/COPY
Press this button to store the modified setting of a programmable feature to a MIDI
memory slot (generally called a preset). Here's how to distinguish between and
:withtheformeryou'reactuallyprogrammingorwritinganewMIDIpreset,with
thelatteryou'remakinganexactduplicateofanexistingpreset.
ThesystemwillselectaWriteoperationwheneveryoueditaMIDIpreset,thatis,when
you have modified a programmable feature. You'll know that this is the case because
theStatusLEDflashessteadilywhenyoueditoneorseveralprogrammablefeatures.If
you press the button and did not edit a MIDI preset, the system will select . This
means that the given preset becomes the source, and its contents are dumped to
anotherpreset and storedthere.
Thesystemquits modeautonomously
ifyoudonotselectanewMIDIpresetwithinabout30seconds.
The preset programming process -- the Write command, that is -- is not carried out as
soon as you press the button. Pressing the button merely initiates the process. You
must hold it down for abouta second until the Status LED flashes three times in rapid
succession.Thismechanismisdesignedtopreventinadvertentprogramming.Youcan
cancel the programming process at any timebefore theStatus LEDfirst illuminatesby
releasing the Write button. Again, the preset will only be programmed successfully if
youpressandholdthebuttonuntiltheStatusLEDflashesthreetimes.
:
MIDIpreset 1 activateswhen the ampis poweredup. Ifyou want toedit and/orstore
other MIDIpresets, you must connect aMIDI foot board or anotherMIDI send device
tothe port(53)and use this outboard deviceto select the desiredMIDI preset
ontheamp.
Note that the Status LED also indicates the status of components unrelated to
and . The microcontrollerruns a shortsystem check afteryou switchthe ampon.
Shoulditfind a defect inthe memory chip(EEPROM), the LED
PresstheWrite/Copycopybuttontoconfirmthatyougotthemessage.Onceyouhave
done this, the system will be ready to run, although you may encounter problems
whenattemptingtoselectorstoreMIDIpreset.
The Status LED serves a third display function. As described in section 45 on pages 17
and18,itindicatesthatnospeakerisconnectedtothepowerampoutputs.
Write
Copy
Copy
Copy
MIDIIn
Write
Copy
IMPORTANTnote;pleasereadandheed
Moregood-to-knowinfo:
Whenyou press thisbutton, the StatusLED lightsup
continuouslytoindicate isactivated.
You'll have to go through a similar routine to copy a preset once you select a target
preset:When theStatusLEDextinguishes,the copy operationisunderwayand can no
longer be cancelled. The LED flashes three times to indicate the preset was copied
successfully. You can cancel the copy operation by releasing the key, but only for as
longastheLEDlightsupcontinuously.
willflashin a pattern of
fiveshortbursts.
Furtherindicatorfunctions:PowerTubeMonitor;descriptioninsection48.
Copy
19
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