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
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。
| 快速参考 |
|---|
| Everlast 电源 (宣传册) |
| 可选附件 | ||
|---|---|---|
| RFF 系列 | 基础型机架空白面板套件 | |
| 半机架搁板系统 | 半机架宽机架搁板和附件 | |
| UTS 100 系列 | 桌下搁板系统 | |
| PMK 155 | 用于 1/8、1/4 或 1/2 机架宽产品的杆式安装套件 | |
| ZipClip 50 | 用于 PS 1205 C 电源的安装套件 | |
示意图
面板图
| 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. | ||
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| 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 | ||
|
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| 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,0.5A, 6 watts |
||
| Power input requirements | 12 VDC, 0.2 A | ||
| 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 | ||
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| (4465-D12) | |||
| 可选附件 | ||
|---|---|---|
| RFF 系列 | 基础型机架空白面板套件 | |
| 半机架搁板系统 | 半机架宽机架搁板和附件 | |
| UTS 100 系列 | 桌下搁板系统 | |
| PMK 155 | 用于 1/8、1/4 或 1/2 机架宽产品的杆式安装套件 | |
| ZipClip 50 | 用于 PS 1205 C 电源的安装套件 | |
中国上海市松江区茸华路 686 号
(联系就说在DAV音视工程网上看到的)
Sales-China@Extron.com
021-3760 1566
爱思创电子（上海）有限公司（爱思创Extron中国）全球总部位于美国加州，是世界领先的专业视音频系统集成产品的生产商。爱思创Extron产品主要包括视音频控制系统、计算机视频接口、切换器、矩阵切换器、分配放大器、音频放大器、扬声器、双绞线和光纤设备、视频图像解析度转换器、视音频信号处理器、视音频流媒体产品、教室声场系统及高分辨率电缆。爱思创Extron电子提供专业视音频工程、培训、设计、演示支持。
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