Trim Controls Volume Controls Master Volume - Revision history

ST at 10:27, 22 December 2018

2018-12-22T10:27:25Z

@@ Line 13: / Line 13: @@
 == Background ==
-Mixers accept inputs from various sources.  Here are some examples:
+ToneMatch mixers accept inputs from various sources from very low output devices (like microphones or bare piezo pickups found in some guitars) up to line-level devices (like other mixers).
-<table>
 == Gain Staging  ==
-Your first adjustment for any input to your ToneMatch mixer is the Trim setting. The exact position of the Trim will vary depending on signal strength of your input source. The correct setting for any particular source may be different from your other sources.
+The exact position of the Trim will vary depending on signal strength of your input source. The correct setting for any particular source may be different from your other sources.
 [[Image:T1TrimPots.png|T1® Trim Pots]]
@@ Line 106: / Line 32: @@
 === Set Input Trim ===
-Turn the Trim setting up until the Trim Light is solid green with occasional flickers of yellow. Use the Trim lights as your guide. (The exact position of the Trim knob is not important).
+Turn the Trim setting up until the Trim Light is solid green with occasional flickers of red. Use the Trim lights as your guide. (The exact position of the Trim knob is not important).
 [[Image:TrimlightsOK.gif]]
-If you see flickers of red (below), turn the Trim down. You are definitely nearing or in compression. Turn the Trim down until there are no red flickers.
+If you see solid red (below), turn the Trim down. You are definitely nearing or in compression. Turn the Trim down until there are only occasional red flickers.
 [[Image:TrimlightsNo.gif]]
 ----

ST: before removing table

2018-12-22T10:16:18Z

before removing table

← Older revision		Revision as of 10:16, 22 December 2018
Line 58:		Line 58:
	<br>Electronic Keyboard		<br>Electronic Keyboard
	</td>		</td>
	<td>-~~20dBv~~		<td>-20dBu
	</td>		</td>
	<td>		<td>
Line 67:		Line 67:
	<td>Line Level<br>Consumer		<td>Line Level<br>Consumer
	</td>		</td>
	<td>-~~10dBv~~		<td>-10dBu
	</td>		</td>
	<td>		<td>
Line 114:		Line 114:
	[[Image:TrimlightsNo.gif]]		[[Image:TrimlightsNo.gif]]

			----
			References
			* [https://www.sweetwater.com/insync/understanding-signal-levels-audio-gear/ Understanding Signal Levels in Audio Gear]

ST: draft - safety

2018-12-22T10:08:25Z

draft - safety

← Older revision		Revision as of 10:08, 22 December 2018
Line 39:		Line 39:
	<td>		<td>
	</td>		</td>
	<td>1.5 to 70 mv		<td>-30 dBu<br>1.5 to 70 mv
	</td>		</td>
	</tr>		</tr>
Line 55:		Line 55:

	<tr>		<tr>
	<td>~~Consumer~~		<td>Instrument Level
	<br>~~RCA Output~~		<br>Electronic Keyboard
	</td>		</td>
	<td>		<td>-20dBv
	</td>		</td>
	<td>		<td>
Line 65:		Line 65:

	<tr>		<tr>
	<td>Line Level		<td>Line Level<br>Consumer
	<br>~~Electronic Keyboard~~
	</td>		</td>
	<td>		<td>-10dBv
	</td>		</td>
	<td>		<td>
Line 75:		Line 74:

	<tr>		<tr>
	<td>Line Level<br>~~Consumer~~		<td>Line Level<br>output from preamps<br>Tip-Ring-Sleeve
	</td>		</td>
	<td>~~-10dBV~~		<td> 0dBu 0.78 V
	</td>		</td>
	<td>		<td>
Line 84:		Line 83:

	<tr>		<tr>
	<td>Line Level<br>~~Consumer~~<br>Tip-Ring-Sleeve		<td>Line Level<br>Professional<br>Tip-Ring-Sleeve
	</td>		</td>
	<td>+~~4dBV~~		<td>+4dBu 1.25 V
	</td>		</td>
	<td>		<td>

ST: draft - safety

2018-12-22T09:51:59Z

draft - safety

New page

{{T8S icon}}{{T4S icon}}{{T1 icon}}
;Introduction

On the ToneMatch mixers (and many others) there are three controls that affect the volume
* Trim
* Channel Volume
* Master Volume

Questions:
* What do these controls do?
* When do you use the different controls?
* Should they all be the same?

== Background ==
Mixers accept inputs from various sources. Here are some examples:
<table>
<tr>
<th>Input Source
</th>
<th>Signal Strength
</th>
<th>Output Voltage
</th>
</tr>

<tr>
<td>Instrument<br>Piezo pickup (no preamp)
</td>
<td>Very Low
</td>
<td>50–100 mV
</td>
</tr>

<tr>
<td>Microphone
</td>
<td>
</td>
<td>1.5 to 70 mv
</td>
</tr>

<tr>
<td>Instrument
<br>Acoustic Guitar with pickup
<br>Electric Guitar
</td>
<td>
</td>
<td>100 mV rms to over 1 V rms<ref>[http://tomsguitarprojects.blogspot.com/2014/12/electric-guitar-output-voltage-levels.html Electric Guitar Output Voltage Levels]</ref>
</td>
</tr>

<tr>
<td>Consumer
<br>RCA Output
</td>
<td>
</td>
<td>
</td>
</tr>

<tr>
<td>Line Level
<br>Electronic Keyboard
</td>
<td>
</td>
<td>
</td>
</tr>

<tr>
<td>Line Level<br>Consumer
</td>
<td>-10dBV
</td>
<td>
</td>
</tr>

<tr>
<td>Line Level<br>Consumer<br>Tip-Ring-Sleeve
</td>
<td>+4dBV
</td>
<td>
</td>
</tr>
</table>

== Gain Staging ==

Your first adjustment for any input to your ToneMatch mixer is the Trim setting. The exact position of the Trim will vary depending on signal strength of your input source. The correct setting for any particular source may be different from your other sources.

[[Image:T1TrimPots.png|T1® Trim Pots]]

=== Set Up Your Source ===
Set your source at the maximum that it will be when performing.
* Microphone
:Sing directly into the microphone using close microphone technique (lips just brushing the windscreen). Sing as loudly as you will sing during your performance. You want to set the Trim to work at your maximum volume.
* Instrument
:Turn your input as high as it is likely to go during performance.

=== Set Input Trim ===
Turn the Trim setting up until the Trim Light is solid green with occasional flickers of yellow. Use the Trim lights as your guide. (The exact position of the Trim knob is not important).

[[Image:TrimlightsOK.gif]]

If you see flickers of red (below), turn the Trim down. You are definitely nearing or in compression. Turn the Trim down until there are no red flickers.

[[Image:TrimlightsNo.gif]]

----
[[Category:T4S]]
[[Category:T8S]]
[[Category:ToneMatch]]
[[Category:Gain Staging]]