美国dbx:234XL 电子分频器_周边,电子分频器,处理器尽在香港百利恒国际有限公司

产品类别：分频器

产品名称：美国dbx:234XL 电子分频器

产品价格：面议
关键词：周边,电子分频器,处理器
产品说明：香港百利恒国际有限公司提供美国dbx:234XL 电子分频器产品信息,包括美国dbx:234XL 电子分频器产品详细介绍,美国dbx:234XL 电子分频器产品参数，3D图库等信息，显示的美国dbx:234XL 电子分频器图仅为参考,购买请以美国dbx:234XL 电子分频器实物为准.

美国dbx:234XL 电子分频器技术参数

dbx 234XL 电子分频器

· TRS或XLR差分平衡输入和输出

· 可选择立体声或由左右声道相加而合成的超低音

· 两通道均有x10范围选开关

· 两个通道均有40Hz高通滤波器(底频切除)

· 所有的输出均带相位反转开关

· 所以频段上的输出电平均可独立调整

· 24dB/oct LinkWitz-Riley滤波器（专业标准）

· 立体声/单声道状态指示LED灯，表明单元所选择的工作模式。

自从进入数码音响年代,越来越多人能够欣赏得到高保真的声音.就算不是专业人仕,亦能练到一对金耳环.因此,现金世界对于扩声系统的音质要求亦会越来越高.因为物理和声学的原因,没有一只喇叭单远能够完美地还原整个由20Hz至20KHz的声音频带.影响必须由二只,三只或更多的喇叭单元所组成,互相分工,每只喇叭单元承担一段声音频带 .以前的音响均采用内置式无源分频网络,优点式价值便宜,缺点是无法清楚地将频带分开,每每在分频点上引致声音模糊不清,破坏了声音地保真度.

电子分频器利用电子网络线路,干净利落地把声音分段,然后送至每只喇叭单元/功放.

精确的分频曲线

虽然都是电子分频器,但是所产生的声音效果却有很大的出入.首先是曲线的陡斜度,基本上越陡峭越好.但同时必须考虑所带来的负面副作用.相为失真,延时失,震铃失真都是常见的的后遗症,必须在两者中做一个平衡.因此,设计和制作一台优质的电子分频是不容易的工作.dbx 公司积累了数拾年专业经验 ,是少数能够生产优质极幅/压缩器的公司,因此才有本领生产优质的电子分频器.

细致的工艺和结构

首先看一下dbx200系列电子分频器的结构特点,最先映入眼帘是其漂亮的外观,其中的各个控制也非常醒目,控制电位器采用步进式器件 ,让调校更精确,而且有较佳的手感.充斥市场的中低价位电子分频器甚多,其中绝大部分都是由一些小规模工厂所生产的偷工减料劣品,简陋的线路,低档的元器件,分离式的电源很大机会破坏了你的声音.dbx 200系列所走的路线是中档价位,高档质量.如果能做到这一电呢?自动化大批量生产让我们将生产成本大幅度地降低.除了刚才提及的步进式控制旋钮,所由输入和输出都采用专业耐用的TRS差分平衡1/4英插座或SLR 插座.电源式内置式的.

不同的规格和组合

标准规格是223和234,输出输入的插座均采用了赖用的TRS4/1英.而223XL和234XL采用了XLR插座.其它功能和技术指标一样.

223 是立体声二分频,单声道三分频电子分频器.234 是是立体声二或三分频,单声道四分频设计,现金市场上只有它能够同时用作二或三分频的电子分频器.尤其适合一小型的器材出租公司,或流动音响系统.

Stereo 2-Way/Mono 3 or 4-Way Crossover

XLR differentially balanced ins and outs. Mono 4-way or stereo 2-way/3-way operation. Subwoofer output.

Let's take a look at the construction features of the dbx 234XL. At first glance you'll notice the units are great looking, and as you turn the controls something else becomes apparent; these units are extremely well built.

The controls exude great precision, and the feel is a solid click. Also, when you open the box, you won't find the external power supply that accompanies most processors in this price range. That's because dbx knows how difficult external power supplies can be to work with and even though it costs a little more they put the high quality power supply right in the unit. All the inputs and outputs are balanced XLR connectors that are screwed directly to the chassis. This connecting of the jacks insures that even if someone steps on a cable plugged into the unit, it's not going to tear up the circuit board inside. All dbx crossovers feature Linkwitz-Riley 24dB per octave filters, the professional standard, but then again, what did you expect?

Via 2 switches on the back panel you first select whether you're operating your system in stereo 2-way, 3-way or mono 4-way. Another back panel switch also selects whether or not you want to mono sum the LF (subwoofer) out. (Most systems that use a subwoofer are mono summed to take advantage of amplifier power and because low frequencies are non-directional.) Back panel switches allow you to select the range of the crossover frequencies individually for both channels. The crossover frequency controls have a green LED that indicates the X10 switch on the back panel is activated (we wouldn't make you check the switch position on the back every time you wonder where it's set). All these switches are on the back panel because it could be disastrous if you were to change them mid-program.

On the front panel you'll notice there are LEDs that indicate whether the unit is in mono or stereo mode. Each channel has an input gain control for proper level setting. There's a recessed 40 Hz low cut (HPF) on each channel to remove unwanted low frequencies. Both the low and high outputs on each channel have a gain control ranging from -infinity to +6dB, to allow muting of individual outputs and for level matching. Also, these outputs each have phase reverse switches that'll help get you out of a bind without having to reconfigure your system. These phase reverse switches may be internally reconfigured as mute switches.

You'll get great performance, all the features you'd expect from a professional product, and the knowledge that you're buying a processor from the people that have been producing the world's finest processors for over 20 years. The technology that made dbx famous brings you a crossover which has been tested to the highest professional standards at a price that's just too low to admit!

Features:

XLR differentially balanced ins and outs

Mode switches for mono 4-way or stereo 2-way/3-way operation

Low frequency summed (subwoofer) output

x10 range switch on both channels

40Hz high pass (low cut) filter both channels

Phase reverse switch on all outputs

Individual level controls on all band outputs

24dB per octave Linkwitz-Riley filters (the professional standard)

Stereo/Mono status LEDs indicate the selected mode

Technical Info

Input

Connectors: XLR

Type: Electronically balanced/unbalanced, RF filtered

Impedance: Balanced >50k Ω, unbalanced >25k Ω

Max Input Level: >+21dBu balanced or unbalanced

CMRR: >40dB, typically >50dB at 1kHz

Outputs

Connectors: XLR

Type: Impedance-balanaced/unbalanced, RF filtered

Impedance: Balanced 200 Ω, unbalanced 100 Ω

Max Output Level: >+21dBu balanced/unbalanced into 2k or greater

System Performance

Bandwidth: 20Hz to 20kHz, +/-0.5dB

Frequency Response: < 3 Hz to > 90 kHz, +0/-3 dB

Signal-to-Noise: Ref: +4 dBu, 22 kHz measurement bandwidth

Stereo Mode:

>94dB (Low Output)

>93dB (Mid Output)

>92dB (High Output)

Mono Mode:

>94dB (Low Output)

>94dB (Low/Mid Output)

>92dB (High-Mid Output)

>92dB (High Output)

Dynamic Range: > 114 dB, unweighted, any output

THD + Noise:

< 0.004% at +4 dBu, 1 kHz

< 0.04% at +20 dBu, 1 kHz

Interchannel Crosstalk: < -80 dB, 20 Hz to 20 kHz

Cossover Frequencies:

Stereo Mode: Low/High: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10 setting)

Stereo Mode: Mid/High: 450 Hz to 9.6 kHz

Mono Mode: Low/Low Mid: 45 to 960 Hz or 450 Hz to 9.6 kHz (x10 setting)

Low-Mid/High-Mid: 450 Hz to 9.6 kHz

High-Mid/High: 450 Hz to 9.6 kHz

Filter type: Linkwitz-Riley, 24 dB/octave, state-variable

Function Switches

Front Panel (Low Cut): Activates 40 Hz Butterworth, 12 dB/octave high-pass filter, one switch per channel

Phase Invert: Inverts the phase at the output, one switch per output

Rear Panel: x1 / x10: Multiplies the low-mid (mono: low/low-mid) crossover frequency range of the front-panel markings by a factor of 1 or 10, one switch per channel

Mode: Selects stereo 2-way, 3-way or mono 4-way operation and disables all LEDs for controls that are non-functional in the mono mode

LF sum: Selects normal (stereo) or mono-summed low frequency operation and disables Ch 2s low output phase invert LED to indicate that this output is not operational in the LF sum mode

Inditators

Stereo Operation: Green LED

Mono Operation: Yellow LED

Low Cut: Red LED per channel

x10: Green LED per channel

Phase Invert: Red LED per output (3 per channel)

Power Supply

Operating Voltage: 100-120 VAC 50/60 Hz; 120 VAC 60 Hz 230 VAC 50 Hz

Power consumption: 15W

Main Connection: IEC 320 receptacle

Physical

Dimensions (H x W x D): 1.75 X 19 X 6.9 in. (4.4cm x 48.3cm x 17.5cm)

Weight: 4.0 lbs. (1.8 kg)

Shipping Weight: 5.8 lbs. (2.6 kg)

Note: Specifications subject to change without notice.