英国艾伦赫赛ALLEN＆HEATH:PA20-CP20路功率效果调音台

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英国艾伦赫赛ALLEN&HEATH PA20-CP 20路功率效果调音台



PA 系列混音器可提供一个标准的 PA 系列所需的所有音频信号处理工具,并使您的操控能够做到“随心所欲”。您不公很快就会熟悉并得心应手地操控它们，而且您还会发现它们所具备的许多创新的性能充分融合了设计师多年的现场调音经验。如果您再仔细地检查一下它们的质量，您就更会欣赏它们标准化的结构：与我们的产品 ML 系列调音台同样单的垂直型电路板、同样的电位器帽、同样的铜质内部耦合界面。在音频性能指标上，PA 系列混音器则完全具备您调音台的丰富、大气、自然、。



16 路单通道和话筒 [XLR] & 线路 [TRS] 输入。 线路输入在 XLR 输入的后级，提供单的 +48V 幻象电源开关。具有平滑增益特性的新型 2 级前置放大器，线路输入接入第二级前置放大级以实现匹配更好、性能更佳。100Hz 高通滤波器切换，插入点。4段均衡，4辅助混音，静音及发光二极管显示。PEL （推子前电平）键及发光二极管显示[类似于峰值显示器功能]，100mm 推子。



平台式低频滤波器[60Hz] 和高频滤波器 [12kHz]。；固定式中低频滤波器 [250Hz] 和扫描式中高频滤波器 [300Hz - 6kHz]。 250Hz 固定式滤波器的控制经过仔细选择使得声音既不拖沓而又充满温暧感



2 路立体声通道，每路均具有 2 个非平衡式立体声输入，一个是 RCA 插口，一个是 TRS 插口。立增益控制提供通道端口的信号混合。输入 [RCA] 可以直接切换到左右通道以代替通道端口提供返送信号，2 段平台式均衡器，4 辅助混音，立体声平衡，静音及发光二极管显示，PEL （推子前电平）及发光二极管显示，与单声道同样的 100mm 推子。



全部通道：用于返送混音的 2 衰减前信号——具有100mm 推子控制、带发光二极管的静音开关、AFL（推子后电平）及发光二极管显示、TRS 输出[可以内部路由至输出部份]，用于效果的 1 衰减后辅助混音——这提供内部效果并且有一个 TRS 输出用于外部效果，1 衰减后辅助混音至 TRS 输出端口用于外部效果或特殊传输。



具有 100mm 推子控制和静音及发光二极管显示的主立体声混音输出。 TRS 输出，具有电平控制和低音模式至 TRS 端口的单声道相加式输出， [RCA] 模拟 + SPDIF 推子前/后可切换的录音输出，双 12 段柱型发光二极管电平表显示节目信号[或 PEL （推子前电平）/AFL （推子后电平）]。 用于外部处理的 TRS 式插入点，提供输出均衡和路由至内部放大器/外部系统。



输出部份提供 4 段半参数式均衡器，它影响 TRS 附加输出和内部的恒定功率放大器。在对扬声器系统的处理上，尤其是返送以及监听用扬声器系统，它可以提供比图示式均衡器更多的控制。通过信号源选择器，可将输出均衡器用于左/右路、左路和右路相加/返送1、或返送1/返送2。



内置 1kW （即 2 x 500W） 均方根值峰值功率级 AB 类功率放大器，采用 ALLEN&HEATH 特的设计，全部功率加进 4 OR 8 Ω 负载 [背后开关选择]。 输出连接器为 Speakon ，双风扇散热系统，周全的保护——防削波的输入限幅器、短路保护、限流和直流故障感应。发光二极管显示：信号、峰值警告、扬声器保护和温度，AB 类放大器的 TRS 输入端口[通常至输出部份/附加副输出端口]允许根据需要立使用功率放大器，备用模式开关可以将扬声器系统隔离，使放大器进入保护状态。



16 个程控数字式效果处理器提供混响、延时、合唱和其它功能及组合功能，该效果模块的输入信号取自单声道和立体声通道的衰减后效果辅助输入，效果模块的输出由一个含静音和 PEL（推子前电平）功能的 100mm 推子控制，并路由至立体声混音和具有衰减后电平控制的 FB1&2。在该点上，2 个具有电平控制功能的 TRS 输入提供外部效果与内部单元相结合的方法，甚至可以断开内部效果而仅使用外部效果。采用一个压触开关式 TRS 插口对效果通道进行静音，通过 MIDI，使用 ALLEN&HEATH 软件编辑器，可以从CD 声源或我们的站点上进行效果编辑。



BGM （背景音乐模式）——将 2 声轨输入信号送至推子后主混音，允许用户下推控制推子（同时补充、中断、及其它）和停止音乐播放，直通放大器/扬声器。具有是控制的 2 声轨输入信号 [RCA] 送至左右通道——馈给头戴式耳机监听选择器（检查录音情况）。2 组 3 色 12 段发光二极管电平表对监听器的信号进行实时显示。大的发光二极管显示 PEL（推子前电平）/AFL（推子后电平）的实时信号——该信号于左右通道/ 2 声轨信号监听器信号源选择，采用继电器式备用开关断开扬声器系统。2 声轨模拟输出 [RCA]+SPDIF 允许直接进入数字式录音，切换式左右通道推子前/后控制。单声道相加电平输出 [TRS]-100Hz 低通滤波器模式开关提供低频信号，唱机是怦输出 [TRS]。



电源: 坚固可先靠的内部电源，1600W 设计。



灯 : 4-芯 XLR 插孔。



16 channels, big punch, and an amazing feature set.



All the tools you need to run a stereo PA system in a straightforward plug-and-play format. You'll quickly feel at home with a number of innovative touches based on many years of real-world experience. High-quality construction includes the same individual vertical circuit boards, nutted pots, and solid copper bus connections as the acclaimed ML series consoles. Experience the full, open, natural sound quality that has made Allen & Heath a respected name around the world.



2 x 500W RMS peak power professional class, fan-cooled, circuit-protected AB power amplifiers built in with same output into 4 or 8 Ω.



16 mono channels with mic (XLR) and line (TRS) inputs (line input overrides the XLR input), individual +48V phantom power switches, and new padless 2-stage preamp with smooth gain law provide pristing sound quality. Line input goes to second stage for better matching and performance. Switched 100Hz high pass filter, insert point, 4-band EQ, 4 aux mixes, mute with LED, PFL button with LED (functions as peak indicator), plus 100mm fader on every channel.



Shelving LF (60Hz), and HF (12kHz) with fixed LM (250Hz), and swept HM (300Hz - 6kHz). The fixed 250Hz control has been carefully selected to provide reduction of muddy sounds and enhance warmth.



2 stereo channels with 2 unbalanced stereo inputs on each-one RCA and one TRS jack. Independent gain controls provide source mixing in the channel strip. The top inputs (RCA) can be switched direct to L&R instead of the channel strip providing extra returns. Each stereo channel features 2-band shelving EQ, 4 aux mixes, stereo balance, mute with LED, PFL with LED, and 100mm fader as mono channels.



Auxiliary sends from all channels include 2 pre-fade for foldback mixes - these have 100mm fader masters, mute switch with LED, AFL with LED, and TRS outputs (which can be routed internally to output section). One post-fade aux mix for effects which feeds the internal effects and has a TRS jack output for external effects. One post-fade aux mix to a TRS jack output is provided for external effects or special feeds.



Main stereo mix output has 100mm fader control and mute with LED plus TRS jack outputs, mono sum output with level control and switch for subwoofer mode to TRS jack. Record output (RCA) analog and SPDIF switchable pre/post fader, plus twin 12-segment LED bar meters that show program (or PFL/AFL). Insert points on TRS jack for external processing as well as output EQ and routing to internal amplifiers/external systems are provided.



A 4-band semi-parametric EQ enhances the output section. This affects the TRS slave outputs and the internal constant power amplifiers, offering more control than graphic equalizers for precise management of speakers, especially foldback/monitors. Source selector allows output EQ section to be used on left/ right, L&R sum/foldback 1, or foldback1/foldback 2.



16-program digital effects processor provides reverbs, delays, chorus, and others, including combinations. This FX module takes its feed from the post-fade FX aux on the mono and stereo channels. The output of the FX module is controlled by a 100mm fader with mute and PFL and is routed to the stereo mix and FB1&2 with post fade level controls. 2 TRS inputs with level control provide a way of combining external effects with the internal unit. The internal effects can be switched off to use external effects only if preferred. A footswitch TRS jack is provided to mute the effects channel. Editing of effects can be done via MIDI using the software editor available free from the resource CD or the Allen & Heath website.



Background music (BGM) mode plays 2 track input into the main mix post fader, allowing the user to pull down the fader (while patching, taking a break, or during walk-in) and leave music playing through the amplifiers/speakers. 2 track input (RCA) with level control to L&R feeds the headphone monitor selector (checking recording) while twin, 3-color 12-segment LED meters display active monitor source. Large LED indicates PFL/AFL active signal overrides L&R/2TRK monitor source selection. Standby switch uses relays to disconnect the speakers. 2 track output (RCA) analog + S/PDIF allows direct-to-digital recording. Switchable pre/post master L&R fader. Mono sum out with level (TRS) mode switch to provide sub feed with 100Hz low pass filter. Phones out (TRS) with level.



Allen & Heath PA 20-CP Powered Mixer Specifications:

· 0dBu = 0.775 Volts rms 0dBV = 1 Volt rms

· Maximum output level: TRS +21dBu into 2k Ω load

· Nominal output level: L-R +0dBu into 600Ω max load

· Other o/p's +0dBu into 2kΩ max load

· Internal headroom: Mix to o/p +21dB. Channels+21dB

· Peak LEDs: 5dB before clipping

· Noise: measured rms 22Hz to 22kHz

· Mic EIN ref 150 Ω source -128dB

· L-Residual <-89dBu (nothing routed)

· L-R mix <-85dBu (channels routed)

· Frequency response: 20Hz to 30kHz +/- 0.5dB

· THD +10dbu, 1kHz

· Channel to mix o/p <0.006%

· Crosstalk - 1kHz

· Ch to ch <-90dB

· Chl mute shutoff<-95dB

· Ch fader shutoff <-95dB

· Power Amp

· Output power Constant Power switchable

· = 2 x 500w RMS into 4 Ω

· = 2 x 500wRMS into 8 Ω

· Frequency response THD+N <0.02%@1kHz

· MainsPower - Internal unit, linear regulated Internally wired to required country voltage

· AC mains input 100V to 240V AC@50/60Hz

· Power consumption 1600W max

· Mains fuse rating: 100-120V AC use T10A 20mm, 220-240V AC use T8A 20mm

· 28.9"W x 7"H x 21.2", 53 lbs.

Allen & Heath PA 20-CP Powered Mixer Features:

· 16 mono channels with mic XLR and line TRS inputs

· 2 x 500W RMS peak power professional class, fan-cooled, circuit-protected AB power amplifiers

· Line input overrides the XLR input

· 2 stereo channel inputs

· Individual +48V phantom power switches are provided

· Line input goes to second stage for better matching and performance

· Switched 100Hz high pass filter

· Insert point

· 4 band EQ

· 4 aux mixes

· Mute with LED

· PFL button with LED that functions as peak indicator

· 100mm faders

· 16-program digital FX processor provides reverbs, delays, chorus and others, including combined


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