Dynaudio BX30 owner manual Flow diagrams, Flowchart preamplifier, Flowchart protection circuit

BX30 Owner’s Manual

Flow diagrams

IN XLR	Input relay	Passiv limiter	Line receiver		High pass 95 Hz	Line driver	Output relay	Output switch	OUT XLR
					24 dB/oct			L+
L+
									Left
Left			Left			Left		L-
L-
b							b
					24 dB/oct			R+
R-
									Right
Right			Right			Right		R-
R+
b							b
				Buffer			Low pass
					Fix level		24 dB/oct
				Left				80 Hz
					+4 dBm
Temperature					-10 dBm
				d	Mute	Level
sensor
							24 dB/oct
	h							95 Hz	a
60°									f
				e
							24 dB/oct
				Right			120 Hz
= also adjustable with a tool
					Limiter
Equalizer		Subsonic	Phase 0°-180°	Phase +180°		c	Power Amplifier	Speaker relay	Speaker
		24 dB/oct
a		10 Hz
					VCA
							g	b
			Figure 8. Flowchart preamplifier

	Comparator
V++ ±10%
					Timer
V-- ±10%		0 = fault		Reset
				AND
		0 = fault		3 seconds
VCC ±5%
		0 = fault
VEE ±5%		0 = fault		1 = no fault
		0 = fault		Red	Green
DC at amplifier	g	0 = fault			Protection	OR
					indicator
					Front of cabinet	b
Temperature > 60°	h
	Startup	0 = fault		Comparator	Timer
					attack 3s
					hold 10s
Input level right	d
		OR	Comparator
Input level left	e			Red; input overload	VU
				Green; input	indicator
Bass level	f
					Front of cabinet
		Buffer			Limiter
= also adjustable with a tool		Comparator			indicator
Limiter active	c			Red; limiting

Figure 9. Flowchart protection circuit

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