Your position is:Home > News Channel > All industries > General description of each model

General description of each model

Date: 2016-11-15    Views: 61    Author: lyaudiotech
  

Generally, please set the output size (volume) of a TV set-top box, a computer, a VOD, or a DVD player at a maximum scale (for example, tune the volume to a maximum scale by pressing the remote control), because a program with a smaller sound signal is more prone to encounter amplification deficiency when the sound signal sent to the volume stabilizer is too small.

Figure: set the volume of a TV set-top box, a VOD, or a DVD player at a maximum scale

 

Figure: set the volume of a VOD player at a maximum scale in touch screen VGA display.

11

 

Figure: set the volume of a computer at a maximum scale.

12

 

Figure: set the volume of a multimedia software play at a maximum scale.

13

 

But there are a few sound signals above the standard, for example, the output size of Taiwan JinsangGolden Voice Jukebox should be adjusted down to slightly lower than the undistorted place of the output of the sound, for the sound is easier to break at high tide (peak clipping distortion) for programs with larger sound signals when sound signals sent to the volume stabilizer are too large.

Figure: Waveform with peak clipping distortion:

On this oscilloscope indicate the signal has been "clipped".

14

 

But there are a few sound signals above the standard, for example, the output size of Taiwan JinsangGolden Voice Jukebox should be adjusted down to slightly lower than the undistorted place of the output of the sound, for the sound is easier to break at high tide (peak clipping distortion) for programs with larger sound signals when sound signals sent to the volume stabilizer are too large.

Figure: Waveform with peak clipping distortion:

On this oscilloscope indicate the signal has been "clipped". 

16

Fault countermeasures:

No sound:

Check if the power adapter is plugged into the DC 12V socket and AC 100-240V power socket?

Whether AC power outlet is powered?

POWER button should be in the position of ON, and the green light should be on? (VR5)

Is the volume of the player, the TV or the audio amp turned off?

Is the volume of the round VOLUME on the top of the unit tuned to the minimum? (VR5)

Whether INPUT button and OUTPUT button on the top of the machine are selected at the corresponding plug positions? (VR5)

Are the INPUT and OUTPUT plug-in positions of the unit reversed?

 

The stability effect of the automatic volume size is not good:

Check whether the volumes of the satellite or digital TV set-top boxes, DVD, karaoke machines, computers, advertising and other players, as the source of signals, are adjusted to the largest position.

 Perform a bypass test to check whether AUTO/BYPASS push button is placed in the AUTO position.  (VR5)

------------------------------------------------------------------------------------------------------------------

Introduction of VR5:

Placement of various switches in the use of VR5:

Pushing the switch to BYPASS will have no effect of volume stabilizing. The original signal will go straight from input to output.

Placement and plug-in position of each switch in the use of VR5:

Push the switch and select the corresponding plug-in interface to play.

EARPHONE interface can be directly connected with headphones to listen to audio, and it can also be used as a second audio signal output.

When using the TV itself to play the sound of TV set-top boxes, computers, DVD player, you can use the VOLUME on the top of VR5 to adjust the size of the volume of TV. When using a professional amplifier or stage sound equipment, you can turn the VOLUME on the top of the VR5 to the MAX position.

17

 

The connection order of the system:

Figure: VOD music VR5 Integrated Power Amplifier Speaker

Microphone Integrated Power Amplifier Speaker

18

 

Figure: VOD music VR5 Pre-Amp-Effecter Rear-Stage-Power-Amplifier Speaker

Microphone Pre-Amp-Effecter Rear-Stage-Power-Amplifier Speaker

19

 

Figure: Please plug the microphone in the integrated power amplifier, and do not plug in the VOD machine: (only the VOD with the volume stability board ALC-05IN inside can be plugged in the VOD machine)


 

Figure: Please plug the microphone into the mixer, and do not plug into the VOD machine:

20

 

22

 

-------------------------------------------------------------------------------------------------------------------

 

Introduction of ALC-06M:

23

 

 

 

 

 

 

Figure: Karaoke Music ALC-06M Pre-Amp-Effecter   Rear-Stage-Power-Amplifier Speaker

Microphone Pre-Amp-Effecter Rear-Stage-Power-Amplifier Speaker

24

 

Figure: Please plug the microphone in the integrated power amplifier, and do not plug in the VOD machine: (only the VOD with the volume stability board ALC-05IN inside can be plugged in the VOD machine)

25

Figure: Please plug the microphone in the Pre-Amp-Effecter, and do not plug in the VOD machine: 25

 

Figure: Karaoke Music ALC-06M Mixer Rear-Stage-Power-Amplifier Speaker

Microphone Mixer Rear-Stage-Power-Amplifier Speaker

Please plug the microphone in the mixer, and do not plug in the VOD machine:

26

 

27

 

 

--------------------------------------------------------------------------------------------------------------------

 

Introduction of ALC-05IN:

27

 

Figure: When the ALC-05IN is actually installed in the VOD, please use the oscilloscope to measure the output position of the ALC-05IN:

28

 

 

Figure: When the ALC-05IN is actually installed in the VOD, please use the oscilloscope to measure the input position of the ALC-05IN:

29

 

Position selection of ALC-05IN installed in the VOD machine: in general, the position should be selected between the main decoding chip and the audio analog output and audio amplifier IC for D2A chip conversion (such as JRC4558 or JRC5532). There are two electrolytic capacitors cross-linked between the decoding chip and the audio analog output and audio amplifier IC for D2A. Please remove the two electrolytic capacitors. Connect the input of the ALC-05IN to the foot of the electrolytic capacitor close to the decoding chip or D2A with a shielded wire (isolation wire). Connect the output of the ALC-05IN to the other foot of the electrolytic capacitor close to the audio amplifier. Connect the 2P socket to the DC 12V of the VOD machine, and the DC 12V of VOD equipment supply audio circuit is recommended.

The plug-in position of this piece of ALC-05IN board, must be in the front of the mixed circuit of both music and microphone, and it can not be behind the mixed circuit.

In addition, when an ALC-05IN board is plugged in the integrated amplifier or Pre-Amp-Effecter, be sure to measure the level of the audio board sent to the ALC-05IN and ensure it is a value between 0.1 to 1V (measure the volume of songs with middle volume with AC function of a multi-meter, and the maximum swing amplitude of the music between 0.3V and 0.8V is the best. The maximum amplitude between 1Vp-p and 3Vp-p measured with an oscilloscope is the best)

If the input signal sent to the ALC-05IN board is too large, it will be more likely to generate clipping distortion when it encounters a song that is too loud.

If the input signal sent to the ALC-05IN board is too small, when it encounters a song with too small sounds, it is easy to generate too small volumes or cause the background noise in front of it to be amplified with the music.

 


 

Figure: Position of R40 and R49

 

 

 

Figure: After installation, measure the input size of the signal of ALC-05IN board with a pointer-type meter (multi-meter): Set the multi-meter to AC 10V stall, the normal pointer will move a little bit, and a fluctuation more than 0.1V is acceptable. As the pointer shows in the figure. Measure the audio signal level sent to the input point of ALC-05IN with the AC10V stall of the pointer type three-use meter. If the pointer can only move a little, it means the status is normal.

561

 

 

Figure: After installation, use digital meter to measure the input signal of ALC-05IN board: set to the stall of AC2V, you can see digital display. The value from 0.3V to 1V is acceptable, as shown in the above figure.

27

 

Figure: The input size of the ALC-05IN is measured with a three-use meter and an oscilloscope:

ALC-05

 

If the input signal is too large, attenuate it before entering the ALC-05IN board. If the input signal is too small, please increase the volume before inserting into the ALC-05IN board or insert the board behind the next stage of op IC.

Please do not place the ALC-05IN board too close to the AC transformer.

Another point you should note is as follows, the maximum of the output of the ALC-05IN board, in order to take into account both domestic (civil) and professional audios, are designed in factory at about 0.4V to 0.5V with a digital meter, and about 2Vp-p to 4Vp-p with an oscilloscope. If you want it to operate in your product, you can change the ALC-05IN board R40 and R49 size to affect the size of the output if there are special requirements. You can also inform us about the appropriate parameters so that we can get it done before the shipment.

 

Figure: The output size of ALC-05IN, which is measured with a three-use meter or an oscilloscope:

 

 

 

 

 

 

 

 

 

Figure: Use the oscilloscope to measure the waveforms of the left and right channels.

31

 

Figure: Waveform without peak clipping distortion: The peak and valley  are sharp or round

16

 

 

 

 

 

Figure: Waveform with peak clipping distortion:

On this oscilloscope indicate the signal has been "clipped".

 

Figure: When you need to measure the input or output of the volume stabilizer, it is convenient to add a cable connecting an RCA jack and an RCA plug adapter.

keywords: But there are a,
share to : More
Further reading
Recommended daily
Gold supplier
Hardware | Food | Communication | Appliances | Agriculture | Electrician | Metallurgy | Apparel | Business< /a> | Car | Management | Mechanical | Gift | Textile | Building Materials | Chemical industry | Fine | Home | Computer | Trading | Wealth | Financial
Allsources Yellow PagesAllsources currencyInvestment CooperationSite MapJoin FreeCommercial AdvertisementWebsite DesignFriendly LinksOctagon BusinessContact UsPayOnline Service
Allsources network Affiliates: Allsources Network Adelaide procurement network American Yellow Pages Open business directory Hunan Village and Kitchen Chinese bus lines network query
2004- B2b168.com Allsources network GuangDong ICP No. 10089450 @Product focus list