美国dbx:2231 双31段图示均衡器_周边,处理器,均衡器尽在香港百利恒国际有限公司

产品类别：均衡器

产品名称：美国dbx:2231 双31段图示均衡器

产品价格：面议
关键词：周边,处理器,均衡器
产品说明：香港百利恒国际有限公司提供美国dbx:2231 双31段图示均衡器产品信息,包括美国dbx:2231 双31段图示均衡器产品详细介绍,美国dbx:2231 双31段图示均衡器产品参数，3D图库等信息，显示的美国dbx:2231 双31段图示均衡器图仅为参考,购买请以美国dbx:2231 双31段图示均衡器实物为准.

美国dbx:2231 双31段图示均衡器技术参数

dbx 2231 双31段图示均衡器

输入：连接头： 1/4寸TRS，母，XLR（2脚为为线）

类型：电子式平衡/不平衡，带RF滤波

阻抗：平衡式，40kΩ 不平衡式，20kΩ

最大输出电平： >+21dBu，平衡式或不平衡式

CMRR： >40dB，典型值>55dB（1kHz）

输出：连接头： 1/4寸TRS，公，XLR （2脚为火线）

类型：阻抗平衡/不平衡式，带RF滤波阻抗：平衡式，200Ω；不平衡式，100Ω

最大输出电平：>+21dBu，平衡式/不平衡式（负载为2kΩ或更大）

系统指标：带宽： 20Hz——20Hz，+/-0.5dB

信噪比：>102dB，不计权，+4dBu， 22kHz带宽

动态范围：>120dB，不计权总谐波失真+噪音：<0.04%，通常在+4dBu，1kHz时，只有0.02%

通道隔离度：<-80dB ,20Hz

降噪量：约为20dB

功能键：

Type III NR（III型降噪）：开头降噪器

EQ Bypass（均衡旁路）：旁路图表式均衡

LoWCut（低频切除）：开头40Hz的低频切除滤波器

Range（范围）：选择+/-6dB或+/-15dB 的增益/衰减范围

显示器：

输出电平计： 4只LED显示（绿、绿、黄、红）分别代表-10，0，+10，18dBu

增益衰减计：4只LED显示（全红）代表0，3，6，10dB

降噪器功率：黄色LED

均衡旁路：红色LED

削波：红色LED

低频切除开动：红色LED

· /-6dB范围：红色液晶

· /-12dB范围：红色液晶 III型降噪器

什么是III类型降噪器？为何与均衡拉上关系呢？Dbx在降噪器技术上的成就与杜比实验室齐名，除了专业用户之外，许多人可能都曾经在民用卡座上看到dbx标志的降噪设施。以前的I类型和II类型都是为了录音机而设计，录音时编码，重播时解码。

III类型降噪是一个全新的概念，在信号进入设备前先行编码，然后在设备的输出端进行解码。[编]和[解]差不多同时进行。经过[编]和[解]的过程可以将设备的内在产生噪音降低20分贝。

非常宁静的均衡器

图示均衡器的功能就是将某一段频率进行增益或衰减，增减幅度一般都是15dB。在衰减时，信号和背景噪声都会同时衰减。相反地，在增益时，信号和前景噪声亦会一同增加，增加的噪声却是不受欢迎的副产品。在未有III类型降噪器之前，我们只好无奈地接受现实。如今，你有自由选择[噪音增益EQ]和[无噪音增益EQ]。

限幅器

一般音响系统配置，工程师都会在均衡器与功放之间加插限幅器，用以保护音箱不易过载或特殊音响效果处理。既然这是大众所需，为何作为生产者不顺应市场需要将均衡器和限幅器合而为一呢？既可减低生产成本，系统接线将会更为简洁。

功能

20系列均衡器本身已经是一个专业广播级的器材。技术指标与音质完全可以与任何广播级设备媲美。全新概念的III类型降噪器和限幅器，让dbx 20 系列均衡器超越时代，开创EQ的新局面。

其它性能

31段1/3倍频程图示均衡器。增益/衰减值可以选择为+/-6dB或+/-15dB。输入增益控制是一个41挡的步进式旋转电位器。设有EQ选择键，可以将EQ旁路。40Hz的低频切除滤波器对实况演出非常有用。

采用了最新的III类型降噪电路，将信噪比改善20分贝。内置限幅器，阈值调校范围由0至+24dBu。4只LED显示输出电平— -10，0，+10和+18dBu。

电子平衡/不平衡输入。输出为伺服平衡/不平衡。

一般来说均衡器是整个信号流程中最薄弱的一环。系统噪音经常因为均衡器而不能改善。Dbx 20系列均衡器的信噪比高达102dB，对于改善音响系统的总体指标是一个大大的惊喜。

20系列的均衡器适用于：广播电台，录音棚，大型工程，实况演出等，对系统指标要求严格的场地。

技术指标

Dual 31-Band Graphic Equalizer

1/3 octave, 3U rack design.

It's amazing. One little button. It has so much effect. The Type III Noise Reduction is an entirely new concept... virtually instantaneous encode/decode within the circuitry of the box. dbx started out to build the finest EQ's possible, boxes with the heritage and performance to rival our famous 30 Series EQ's. And to no one's surprise they came out awfully darn good. (Ask to see the Audio Precision plots compared to the competition.) But then, Roger (dbx's chief engineer, a nice guy, as far as engineers go) got the crazy idea of putting this new noise reduction stuff in the box. They listened to it and were amazed. The EQ's sounded great without it but with it the performance was nothing short of incredible. Check it out yourself and see.

But hey, Roger wasn't about to stop there. PeakPlus Limiter. Who knows more about limiting than the folks at dbx; nobody... that's who. So when the guys were developing this new series of EQ's they wanted something that would be unique to these EQ's. That's when Roger got another one of his bright ideas and said "I bet they'll work a lot better if there's a cool limiter built in." Next thing you know, all the guys are in the studio amazed at the new limiter Roger had designed specially for the 20 Series. Once again, hearing is believing... With a threshold range of 0 to +20dbu, the PeakPlus limiter is designed to tame your program material from the subtlest nuances to the rowdiest hits. Also, the four stage LED ladder gives you a great visual indication as to what the limiter is doing.

20 Series EQ's. You used to have to settle for second best in a reasonably priced EQ but not any more. With the new 20 Series from dbx Professional Products you get a great EQ circuit, a graceful yet powerful limiter and the revolutionary new design of the Type III Noise Reduction. Check out the dbx 20 Series graphic EQ's at your pro audio outfitter. You'll see, with the 20 Series EQ's you get both MORE!!!

Features

Revolutionary patent-pending instant encode/decode Type III Noise Reduction increases S/N ratio by up to 20dB.

PeakPlus Limiter (also patent pending) threshold range from 0dBu to +20dBu

Four segment LED bargraph for BOTH Gain Reduction AND Output Level.

Status LEDs offer visual feedback for all settings on the front panel.

Technical Info

Inputs

Connectors: 1/4 in. TRS, female XLR (pin 2 hot), and barrier terminal strip

Type: Electronically balanced/unbalanced, RF filtered

Impedance: Balanced 40kS, unbalanced 20kS

Max Input Level: >+21dBu balanced or unbalanced

CMRR: >40dB, typically >55dB at 1kHz

Outputs

Connectors: 1/4 in. TRS, male XLR (pin 2 hot), and barrier terminal strip

Type: Impedance-balanced/unbalanced, RF filtered

Impedance: Balanced 200S, unbalanced 100S

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

>+20dBm balanced/unbalanced (into 600)

System Performance

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

Frequency Response: <10Hz to >50kHz, +0.5/-3dB

Noise Reduction In (+/-6 and +/-12dB range):

Signal-to-Noise: >102dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth

Dynamic Range: >120dB, unweighted

Noise Reduction Out: (+/-6dB range):

Signal-to-Noise: >94dB, unweighted, ref: +4dBu, 22kHz measurment bandwidth

Dynamic Range: >112dB, unweighted

Noise Reduction Out: (+/-12dB range):

Signal-to-Noise: >90dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth

Dynamic Range: >108dB, unweighted

THD+Noise: <0.04%, 0.02% typical at +4dBu, 1kHz

Interchannel Crosstalk: <-80dB, 20Hz to 20kHz (2215/2231)

Noise Reduction: Up to 20dB of dynamic broadband noise reduction

Function Switches

Type III NR: Activates dbx Type III' Noise Reduction

EQ Bypass: Bypasses the graphic equalizer section in the signal path

Low Cut (recessed): Activates the 40Hz 18dB/octave Bessel high-pass filter

Range (recessed): Selects either +/- 6dB or +/- 15dB slider boost/cut range

Indicators

Output Level Meter: 4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu

Gain Reduction Meter: 4-LED bar graph (all Red) at 0, 3, 6, and 10dB

Type III NR Active: Yellow LED

EQ Bypass: Red LED

Clip: Red LED

Low Cut Active: Red LED

·/-6dB range: Red LED

·/-12dB range: Red LED

Power Supply

Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz

230VAC 50/60Hz

Power Consumption: 23W

Mains Connection: IEC receptacle

Physical

Dimensions: 3.5" H X 19" W X 7.9" D (8.9cm x 48.3cm x 20.1cm)