ASA 204

主要特性

Extron ASA 204 和 ASA 304 是将两通道立体声音频转换为平衡或非平衡单声道音频信号的高性能音频合成放大器。对于在教堂、礼堂、运动场、体育馆和其它立体声信号无效的环境中所使用的单声道、多扬声器的扩音系统，该产品是合成立体声信号的理想选择。

特性

• 在单一机壳内容纳 4 个各自独立的有源音频合成放大器
• 将立体声音频转换为平衡或非平衡单声道音频
• 螺丝锁定器单声道输出
• ±6 dB 输出增益切换
• 输入：RCA 插座
• 随附外置 Extron Everlast™ 电源，产品编号 #70-1175-01 — 该全球通用型电源具有经验证的高可靠性和低功耗，能够降低运行成本
• Extron Everlast 电源可享受 7 年部件及人工保修

技术参数

也请参阅我们的  PDF 格式的技术参数

ASA 204, ASA 304
Audio
Gain	Generally unity.  Actual gain depends on whether or not both inputs have signals and also on the output wiring and DIP switch settings.  See the table below.
Frequency response	20 Hz to 20 kHz, ±0.05 dB
THD + Noise	0.03% @ 1 kHz at nominal level
S/N	>90 dB (balanced) at rated maximum output
CMRR	>75 dB @ 20 Hz to 20 kHz
Audio input
Number/signal type
ASA 204	4 stereo, unbalanced
ASA 304	4 stereo, balanced/unbalanced
Connectors
ASA 204	4 pairs of female RCA (tip-ring)
ASA 304	(4) 3.5 mm captive screw connectors, 5 pole
Impedance
ASA 204	>10k ohms unbalanced, DC coupled
ASA 304	>17k ohms unbalanced, 23k ohms balanced, DC coupled
Nominal level
ASA 204	-10 dBV (316 mV)
ASA 304	+4 dBu (1.23 V)
Maximum level	+20 dBu (7.75 V), (balanced or unbalanced), at 1% THD+N
NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
Audio output
Number/signal type	4 mono, balanced/unbalanced
Connectors	(2) 3.5 mm captive screw connectors, 5 pole (double stacked)
Impedance	<50 ohms unbalanced, 100 ohms balanced
Nominal level
ASA 204	-10 dBV (316 mV)
ASA 304	+4 dBu (1.23 V)
Maximum level (Hi-Z)
ASA 204, ASA 304 only	>+23 dBu, balanced; or >+17 dBu, unbalanced at 1% THD+N
General
Power supply	External Input: 100-240 VAC, 50-60 Hz Output: 12 VDC, 0.5 A, 6 watts
Power input requirements	12 VDC, 0.2 A
Ambient temperature/humidity	Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
Cooling	Convection, no vents
Mounting
Rack mount	Yes, with optional 1U rack shelf
Furniture mount	Yes, with optional mini under desk mounting kit
Pole mount	Yes, with optional mini projector mounting kit
Enclosure type	Metal
Enclosure dimensions	1.7" H x 4.3" W x 3.0" D (1U high, quarter rack wide) (4.3 cm H x 10.9 cm W x 7.6 cm D) (Depth excludes connectors.)
Product weight	0.5 lbs (0.3 kg)
Regulatory compliance	CE, C-tick, c-UL, UL, FCC Class A, ICES, VCCI
Product warranty	3 years parts and labor
Everlast power supply warranty	7 years parts and labor
NOTE     All nominal levels are at ±10%.
NOTE     Specifications are subject to change without notice.
(4465-D12)