【 Weak current College 】 e-mail divider function key presentations and adjust method

(A), electronic dividers in each function knob introduction

Different electronic divider will have different adjustment knob and parameters, the following spoke: RANE (Len) AC22 electronic dividers for example for simple description:

RANE (Len) AC22 e divider is a stereo divider, every single channel from left to right, there are six buttons or wheel, the loop is:

1, MASTER-LEVEL: channel signal input level. You can adjust the size of the input signal level.

2, LOW-LEVEL: bass output with volume adjustment knob. You can adjust the bass output signal level.

3, LOW-MUTE: bass volume mute button. Press this button to cut the LOW-LEVEL bass output volume.

4, LOW-DELAY: bass delay knob. You can delay the bass signal, low frequency more fullness.

5. LOW/HIGH-FREQUENCY: crossover knob. You can adjust the frequency of electronic dividers.

6. HIGH-LEVEL: treble output volume adjustment knob. You can adjust the treble, the size of the output signal level.

(Ii), e-divider adjustment method

1, MASTER-LEVEL: channel signal input level adjustment is important, just like on a mixer channel gain adjustment, the first step of the volume is critical. General adjustment in similar clock 12 o'clock position is more appropriate, does not need to make adjustments.

2, LOW-LEVEL: on subwoofer output volume adjustment according to the crossover point and sub-woofer system to determine the number, the General adjustment in similar clock 12 points and 14 point location. The same adjustments also note at LOW-MUTE bass volume mute button is not pressed, otherwise you will not have the bass signal sent out.

3, LOW-MUTE: bass volume mute button. Press this button to cut the LOW-LEVEL bass output volume. This is primarily intended to contrast the bass and treble, normal use of course do not press it.

4, LOW-DELAY: bass delay knob adjustment to flexibly, based on field effects to adjust, sometimes bass too hard, too thin, we can open it, make a little sense of bass, this delay can increase the reliability and the bass of Fusion; on the contrary if you feel that chubbiness bass fit, do not open it, otherwise it will look muddy bass and haw. General adjustment in similar clock 8 points and 11 points.

5. LOW/HIGH-FREQUENCY: crossover knob. Adjust the electronic frequency divider ratio points according to the audio system uses the types and characteristics of the speaker, in 2-n mode is usually to adjust 180Hz-250Hz range. Also is to adjust the clock at the similar 10 points and 11 points.

6. HIGH-LEVEL: treble output volume adjustment knob. To adjust the treble the output volume according to the crossover point and treble speakers in the system of quantity, is similar to the General adjustment in 12 point and clock 14 point location. At the same time adjust to listen the treble and bass integration degree: treble is too small to bass surrounded sound will become Dim; treble is too big, too, would seem out of touch with bass, not fusion. Moderate.

3. sound system frequency of some of the problems arising in the

(A) use the equalizer to replace electronic dividers

Not a sound system is configured with a divider, and certainly not a case needs a divider, if a set of audio system due to cost constraints, even the speaker configuration is not enough, the more reluctant to configure one electronic dividers. At this point if your system has extra equalizer, we can actually be considered professional 15 or 31 equalizer in place of scalers, it can also increase your system's sound pressure. The reason is simple: Ideally we only need to issue a sub-woofer 200Hz following frequencies well, but in fact most of the bass speaker internal is no built-in divider, it's the actual frequency can amounting to 2000Hz above. We all know about ear to 1000Hz feel most sensitive of sound, we hear the voice of 2000Hz following certain frequency than 200Hzfollowing sound feeling. Ear sensory sound great, of course, is the entire system of sound pressure increased. Specific adjustment method is: the Equalizer on 50 — 200Hz upgrade 3 dB; 300-500Hz do upgrade and attenuation; 500Hz above to 2000Hz into a gradient gradual attenuation, the basic fact about frequency to 2000Hz attenuator 12 dB or so. This adjustment methodology and intentions are well understood, this is not to say, using this method there is a benefit is easy to adjust the sound field, to maximize the effectiveness of the played bass speaker!, of course, this is an emergency and helpless, from academic point of view is not promoted.

(2), the use of e-modulus prescaler grave consequences caused by improper

Last year a large bar in Hefei, the opening of the national day, the sound system during the Chinese Communists use a single 12-inch wide-band 16 main speakers, dual 18 inch subwoofer speaker 22 only, there are other 20 only secondary speakers. However, opening a few days later found the main speakers in single 12-inch speaker out 2 only, start where technical staff thought it was normal damage, replace the 2 new speakers, but then a week in the Inland one and bad 6 only 12-inch full-frequency Horn, this is not normal, and in addition to the 12-inch main speakers, other speakers are no problem. And then I help to check the system and found that the improper use of the electronic divider, I just put the divider crossover point from 130Hz increased to 230Hz, this problem will be solved, but the bass effect is better. In fact, truth is simple: this system due to balance human performance, use a human voice performance better 12-inch wide-band at the beginning of the main speaker, electronic frequency divider crossover point in 130Hz concept, what is this? means system 22 44 only bass speaker only 18 inch horn can only issue 130Hz following sound effects really limited, a big waste of resources; whereas the system of 16 only 12-inch speaker hasto pay more than the main sound 130Hz, we know that the sound intensity and excitement of the approximately 200 Hz, this 16-inch Horn since only 12 diameter small simply overwhelmed, the frequency and method of use is equal to murder! result can be imagined. Adjusted is quite the same, only the primary speaker only 16 issued more than sound, 230Hz 230Hz following voice only by 22 so sub-woofer is responsible for two sets of speaker base, collocation and more perfect, the key is to play their respective specialties. From the above example we can know that the use of electronic dividers needed so flexible!

(3), on the main speakers and connection of e-modulus prescaler

As you know, now we use sound system in general are two crossover system more normal circumstances is divided by the electronic frequency divider for low-frequency signals to the sub-woofer work, of course, what is the crossover point to flexibility. It may also have a problem perhaps often plagued everyone: is the main speaker in the end is a divider is good or not good? this puzzle similar to the I-stage compressor that article write: compression is good in the equalizer front or rear? my personal view is that the primary speaker power without electronic dividers that more flexible, because the Lord speaker we usually configure professional equalizer, we also have the flexibility of adjusting the main speaker of low frequency section, allow it to better fit the bass speakers work; but if the primary speaker passed the electronic dividers, if we put the crossover point set at this time the main speaker 200Hz, it can only send 200Hz sound of the above, we think, so many of the main speakers bombarda not wasted? as a slow swing in Shantou, use 8 only double 18 inch bass speakers, 10-15-inch wide-band master speaker, party a shall always feel the bass is not enough, you do not want to increase the bass. I check system and found 10 main speaker through electronic divider, due to insufficientparty said bass, acoustic bass frequencies allotted in the very high, at about, imagine 350Hz: adjust though it has increased by only 8 sub-woofer and loudness, but 10-15-inch wide-band main speakers at the above work, the 350H main speaker can say basically didn't give any bass. I immediately put the 10 main speaker line changed it to use the equalizer effect immediately and directly control the tremendously! there's audio Division as incredible: I just pulled two audio line-in connector, plug it into what effect elsewhere, is quite different? is it in accordance with the e-modulus prescaler brochures on the regular connection to connect to the main speakers, I don't like electronic divider does not conform to the rules? why I think we can calculate: let 10-15 inch main speaker of 20 only 15-inch speakers, increase the number of bass energy! so not rigid, to respect the fact that breaking it!

The above example is because the main speakers adopted electronic dividers, caused by improper use of the system principal speaker severely compromised. Another example is because the main speakers adopted electronic dividers, but is not suitable, the resulting system bass energy and overall sound pressure. Visible and sometimes some speakers are subject to electronic dividers, some you can pass or not pass, but sometimes you can't. It is paradoxical that we may feel confused, that's exactly what to do? "is actually very simple, summary is: double 15-inch wide-band master sound box it is best not to go through electronic dividers; single 15-inch main speaker can be flexibly applied; whereas a single 12-inch main speakers the best e-mail divider, in the above job security 180Hz.

IV. electronic divider development direction

Currently we are using divider although called electronic dividers, but after all, not a number, its internal circuit or analog, also adjust the precision is not very accurate. In recent years and the latest some digital processor, the processor is basically a function of frequency, frequency frequency is shown by digital forms, clear, make people look at to understand, and frequency of accuracy and signal to noise ratio dramatically improves. More crucial is the way digital frequency differs from previous electronic dividers, with our digital sound processor to dbx260 cases for the next comparison, if we need to build a four-frequency of high-grade audio system, 2-channel standard all audio signals input to the digital sound processor dbx260, we can be divided into four frequency bands available to different speakers work:

1, digital sound processor dbx260 output signal 1 road to woofer speaker use, set the operating frequency range in 30Hz — 150Hz, crossover point located around 90Hz.

2, digital sound processor dbx260 output signal for 2-way to set the bass speakers use, frequency of work ranges from 130Hz — 450Hz, crossover point located around 220Hz.

3. digital sound processor dbx260 output signal of articles 3, 4-channel available to low baritone speakers use, set the working frequency range in 400Hz — 800Hz, crossover point located around 500Hz.

4, digital sound processor dbx260 output signal of sections 5, 6-channel available to treble speakers use, set the working frequency range in 750Hz — 20000Hz, crossover point located around 2000Hz.

You can findThe use of digital processing can set a crossover point then sets a best working frequency range, so precise crossover is an electronic dividers in the analog circuit anyway. Of course the example above said working frequency range and frequency point is not fixed, according to the speaker and sound field to make fine adjustments. But through the above example we should know: professional audio in a digital age coming sooner, as our audio engineers who have to constantly learn and master the latest audio technology, stand still does not work!

5. use the e-modulus prescaler requires attention to the problem:

1, crossover point: If in a 2-n-sound system, the adjustment of the crossover point actually does not depend on bass speakers, but to Chinese and treble speaker. Because bass speakers work in 300Hz following can, but some treble speakers as speaker diameter is too small, the dynamic range is not large enough, you must work in order to ensure the above 200Hz their safety, if in this crossover points in the vicinity, then these 130Hz treble speakers work looks very dangerous.

2. volume control: whatever is enter level or adjust the output level, when you want to have a degree, don't drive too big. If you are an individual dividers on volume knob are open to a large, systems of sound pressure is not enough, it will adjust the electronic divider in front of the signal's level or adjust the electronic dividers following amplifier's level and volume attenuation switch. This special attention, otherwise e divider in the signal distortion can be easily damaged subordinate devices.

3, there are some e-modulus prescaler has one: the button, we X10 note do not press it lightly. For example our crossover point adjustment in 200Hz, press this button 200X10 becomes 2000Hz, so unless it is required, otherwise generally do not press this button.

4, some electronic dividers back panel has a bass mode choice, it can convert stereo 2-way signal synthesis of 1-channel output, which can reduce low acoustic interference between the speakers. You can use the following as appropriate. Of course if the bass frequency points higher, then the bass speaker sounds will have a certain direction, at this point or 2-channel stereo signal of State work better.

5. stereo mode and mono mode: currently we are using most electronic dividers are mostly of 2 frequency, taking into account the flexibility and versatility, these electronic dividers of the back panel of the General Council has a stereo and mono mode switch, if you put the switch on the Mono working mode, then at this point the electronic dividers from a dual-channel electronic 2 frequency divider becomes a single-channel 3-n e divider. So unless necessary not to easily convert this work switch, otherwise e divider output signal behind the output frequency of the signal would be quite different! minor worsened the sound, to also be damaged equipment!

6. system bass signal output and treble signal output must not be confused, or treble signal to the subwoofer speakers, bass signal to a high-pitched sound, so diametrically opposed approaches sound system is really no sound comes out, because the frequency wrong! maybe also burned speakers!

7. the main speakers are frequency: above said the Lord speaker is not to go through the electronic dividers, everyone should have their own ideas, not understand you can test it several times before deciding, in the heart of no bottom instead of blindly following the decision.

8, using digital processor frequency, be sure to distinguish between what is a crossover point, which is the operating frequency range. In addition to the operating frequency range of the start point and end point there will have a choice of frequency attenuation of strength, such as 6dB and 12dB or 24dB, 48dB, several options, we're flexible application, usually in the 24dB or more appropriate.