Panasonic SC-AK323, SC-AK320, SC-AK520, SC-AK523 operating instructions Specifications

Specifications

AMPLIFIER SECTION AK520 Power output

THD 10%, both channels driven

60 Hz–3 kHz	55 W per channel (6 Ω)
(Low channel)
3 kHz–16 kHz	55 W per channel (6 Ω)
(High channel)
40 Hz–100 Hz		140 W (8 Ω)
(Subwoofer channel)
Total power		360 W (Total)
Power output
THD 10%, both channels driven
1 kHz	65 W per channel (6 Ω)
(Low channel)
10 kHz	65 W per channel (6 Ω)
(High channel)
80 Hz		160 W (8 Ω)
(Subwoofer channel)
Total power		420 W (Total)
Input sensitivity
AUX		250 mV
Input Impedance		13.3 kΩ
AUX

AMPLIFIER SECTION AK523 Power output

THD 10%, both channels driven

60 Hz–3 kHz	50 W per channel (6 Ω)
(Low channel)
3 kHz–16 kHz	50 W per channel (6 Ω)
(High channel)
40 Hz–100 Hz		140 W (8 Ω)
(Subwoofer channel)
Total power		340 W (Total)
Power output
THD 10%, both channels driven
1 kHz	60 W per channel (6 Ω)
(Low channel)
10 kHz	60 W per channel (6 Ω)
(High channel)
80 Hz		160 W (8 Ω)
(Subwoofer channel)
Total power		400 W (Total)
Input sensitivity
AUX		250 mV
Input Impedance		13.3 kΩ
AUX

AMPLIFIER SECTION AK320 Power output

THD 10%, both channels driven

60 Hz–3 kHz	58 W per channel (6 Ω)
(Low channel)
3 kHz–16 kHz	58 W per channel (6 Ω)
(High channel)
Total Bi-Amp power 116 W per channel
Power output
THD 10%, both channels driven
1 kHz	75 W per channel (6 Ω)
(Low channel)
10 kHz	75 W per channel (6 Ω)
(High channel)
Total Bi-Amp power 150 W per channel
Input sensitivity
AUX	250 mV
Input Impedance	13.3 kΩ
AUX

AMPLIFIER SECTION AK323 Power output

THD 10%, both channels driven

60 Hz–3 kHz	54 W per channel (6 Ω)
(Low channel)
3 kHz–16 kHz	54 W per channel (6 Ω)
(High channel)
Total Bi-Amp power 108 W per channel
Power output
THD 10%, both channels driven
1 kHz	70 W per channel (6 Ω)
(Low channel)
10 kHz	70 W per channel (6 Ω)
(High channel)
Total Bi-Amp power 140 W per channel
Input sensitivity
AUX	250 mV

FM TUNER SECTION

Frequency range

87.9–107.9 MHz (200 kHz steps) 87.5–108.0 MHz (100 kHz steps)

Sensitivity	2.5 ØV (IHF)
S/N 26 dB	2.2 ØV
Antenna terminal(s)	75 Ω (unbalanced)

AM TUNER SECTION

Frequency range

520–1710 kHz (10 kHz steps)

Sensitivity
S/N 20 dB (at 1000 kHz)	560 ØV/m

CASSETTE DECK SECTION

Track system		4 track, 2 channel
Heads
Record/playback		Solid permalloy head
Erasure	Double gap ferrite head
Motor		DC servo motor
Recording system		AC bias 100 kHz
Erasing system		AC erase 100 kHz
Tape speed		4.8 cm/s (17/8 ips)
Overall frequency response
(+3 dB, –6 dB at DECK OUT)
NORMAL (TYPE I)		35 Hz–14 kHz
S/N		50 dB (A weighted)
Wow and flutter		0.18% (WRMS)
Fast forward and rewind time
Approx. 120 seconds with
		C-60 cassette tape

CD SECTION

Sampling frequency		44.1 kHz
Decoding		16 bit linear
Beam source/wavelength
Semiconductor laser/780 nm
Number of channels		Stereo
Frequency response
	20 Hz–20 kHz (+1, –2 dB)
Wow and flutter	Below measurable limit
Digital filter		8 fs
D/A converter		MASH (1 bit DAC)
MP3
Bit rate		32 kbps–320 kbps
Sampling frequency
	32 kHz, 44.1 kHz, 48 kHz

SPEAKER SECTION

Front speakers SB-AK520

AK520	AK523
Type		3 way, 3 speaker system
Speaker(s)
Woofer		16 cm (61/2˝) cone type
Tweeter		6 cm (23/8˝) cone type
Super tweeter		2.5 cm (1˝) Piezo type
Impedance			6 Ω
HIGH
LOW			6 Ω
Input power (IEC)
HIGH			65 W (Max)
LOW			65 W (Max)
Output sound pressure level
			83 dB/W (1.0 m)
Cross over frequency			2.6 kHz, 10 kHz

Frequency range 37 Hz–23 kHz (–16 dB) 44 Hz–22 kHz (–10 dB)

Dimensions (WxHxD) 241 x 360 x 239 mm

Mass	(91/2˝ x 143/16˝ x 913/32˝)
	3.8 kg (8.4 lb.)

Front speakers SB-AK320

	AK320	AK323
	Type		3 way, 3 speaker system
Speaker(s)
	Woofer		16 cm (61/2˝) cone type
	Tweeter		6 cm (23/8˝) cone type
	Super tweeter		2.5 cm (1˝) Piezo type
Impedance				6 Ω
	HIGH
	LOW			6 Ω
Input power (IEC)
	HIGH			75 W (Max)
	LOW			75 W (Max)
Output sound pressure level
				83 dB/W (1.0 m)
Cross over frequency				2.6 kHz, 10 kHz

Frequency range 37 Hz–23 kHz (–16 dB) 44 Hz–22 kHz (–10 dB)

Dimensions (WxHxD) 241 x 360 x 239 mm

Mass		(91/2˝ x 143/16˝ x 913/32˝)
			3.8 kg (8.4 lb.)
Subwoofer SB-WAK520
AK520	AK523
Type		1 way, 1 speaker system
Speaker(s)
Subwoofer		16 cm (61/2˝) cone type
Impedance			8 Ω
Input power (IEC)			160 W (Max)

Output sound pressure level

80 dB/W (1.0 m)

Frequency range 40 Hz–220 Hz (–16 dB) 45 Hz–180 Hz (–10 dB)

Dimensions (WxHxD) 266 x 331 x 264 mm

Mass	(1015/32˝ x 131/32˝ x 1013/32˝)
	4.1 kg (9 lb.)

GENERAL

Power supply								AC 120 V, 60 Hz
Power consumption
				AK520				AK523		: 267 W
				AK320				AK323	: 225 W
Dimensions (WxHxD)
	AK520		AK523			: 250 x 330 x 369 mm
						(927/32˝ x 13˝ x 1417/32˝)
	AK320		AK323		: 250 x 330 x 366 mm
						(927/32˝ x 13˝ x 1413/32˝)
Mass		AK520		AK523			: 8.2 kg (18.0 lb.)
		AK320		AK323			: 7.5 kg (16.5 lb.)

Power consumption in standby mode: 0.34 W

Note:

1.Specifications are subject to change without notice.

Mass and dimensions are approximate.

2.Total harmonic distortion is measured by the digital spectrum analyzer.

3.The labels “HIGH” and “LOW” on the rear of the speakers refer to High frequency and Low frequency.

Input Impedance	13.3 kΩ
AUX

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RQT7330