A look inside of a CD player Pioneer CDJ-800

   First, I am going to talk about the outer design and the characteristics given by the manufacturer, and after that I am going to show you what is under the hub :-)

   CDJ-800 has very compact and solid casing which makes this peace of equipment ideal for long live through professional exploitation and it weights 3.9 Kg(8.6 lbs). At first look, you can't miss the big jog wheel which gives true feeling of real vinyl deck.
Personally I really like the small display on the middle of the jog wheel which sometimes it is very useful.

Characteristics given by the manufacturer:

Specification table

 This player can use only CD, CD-R and CD-RW disc formats.
CD-J800 has distortion level of 0.006%  and good frequency range from 4Hz to 20KHz.







                  


     Jog Wheel
In vinyl mode, the touch-sensitive Jog Wheel gives DJ
fingertip control of their digital music. Users can stop and
cue up tracks, bend and scratch sounds, just as they
would with vinyl. In CDJ mode, the Jog Wheel lets DJs
speed up or slow down tracks, fine-tune cue points
and use all the other exceptional CDJ functions                                                                           


                                                                                             

Cue/Loop Memory                                                                       

Once a DJ has set a cue or loop point, it can          

be saved to the deck’s internal memory. The

CDJ-800 has enough capacity to save one cue                          

point for up to 500 CDs, allowing DJs to use                          

all sorts of different tracks without having                                            

to find the cue points manually                                                      

                                                                                            
Master Tempo
This world-famous function locks the pitch
of a track, even when its speed is
changed. DJs can speed up or slow down
the beat, without any difference to the
sound of the vocals and instruments.                                                                                                 


Real Time Cue
Press the In/Real Time cue button to set a cue point instantly,
then save it to the internal memory.

Auto Cue
This is the fastest way for DJs to find the first beat of a track,
although it can be turned off for manual cueing.

Manual Cue
Cue points can be set anywhere on the CD, in either vinyl or
CDJ mode, by making adjustments with the Jog Wheel or
manual search buttons. The cue point is stored in the deck’s
internal memory until it’s overwritten by a new cue point.



Pitch Bend
This is used to either speed up or slow down the tempo of a
track, by moving the Jog Wheel (in CDJ mode) either forwards
or backwards.

Reverse
This function is used to playback in reverse, but without having
to stop or start the track. There’s no loss of tempo or pitch
either.

Eject Button
The CDJ-800 includes a guard to stop the eject button being
pushed accidentally.




Let's see what is under the hub :-)

Picture 1

Picture 2: Power supply region

Picture 3: Small shock absorbers on the CD-drive