Yamaha Audiogram 3 owner manual Block Diagram and Level Diagram

AUDIOGRAM

	PHANTOM (+48V)	L R
MIC A		STEREO	STEREO
	COMBO
[–60 to –16dBu]		[–6dBu]
		HA
INPUT 1	MIC/INST
		Level
MIC B
[–60 to –16dBu]	Hi-Z	(Gain)	[–6dBu]
INST		[10 to 54dB]
			SUM
[–44 to 0dBu]
			SUM
		[–6dBu]
		HA

LINE L	Level
[–34 to +10dBu]	(Gain)
	[6 to 50dB]
INPUT 2	HA
LINE R
[–34 to +10dBu]

		L R	RE
		PEAK
		SIGNAL	GR
		DR
	Level	DR
	(MASTER)
[–6dBu]	[–12dBu]	[–2dBu]	L
SUM		BA
			STEREO OUT
SUM		BA	[–2dBu]
			R

PHONES

[0.5mW @ 40ohms]

	MUTE
	LPF	[–20dBu]		USB
		LIN
				D–
		RIN		D+
	LPF			GND
			USB	+3.7V REG
[–6dBu]		[–20dBu]
	LPF		AUDIO
		LO		Vbus (+5V)
		RO		SSPND
	LPF
			12MHz
POWER				IN
		OUT1 SW_IC EN1
GR
+5V		OUT2		EN2

PHANTOM

RE

■ Block Diagram and Level Diagram

3

+48V

DC-DC

Owner’s Manual 129

+30dBu
+20dBu		Clip Level		Clip Level
+10dBu	CH IN INST Gain: Min [0dBu]	ST CH IN LINE Gain: Min [+10dBu]
0dBu
–10dBu	CH IN MIC Gain: Min [–16dBu]
–20dBu			ST CH IN LINE Gain: Max [–34dBu]
–30dBu	CH IN INST Gain: Max [–44dBu]
–40dBu
–50dBu	CH IN MIC Gain: Max [–60dBu]
–60dBu

–7.5V DC-DC

+7.5V DC-DC

		+30dBu
	Clip Level	+20dBu
		+10dBu
	STEREO OUT [–2dBu]	0dBu
		–10dBu
Level (MASTER)	PHONES [0.5mW @ 40ohms]	–20dBu
[Nominal: –6dB]		–30dBu
		–40dBu
		–50dBu
		–60dBu

Specifications