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15 pin highdensity D-SUB male connector layout
15 pin highdensity D-SUB male connector
The 15 Pin connector from the Subwoofer to the Front Right Speaker. All other speakers are connected by a phono lead except front right which uses has the following layout.

The Front right speaker controls the inputs and outputs of the system. There are 3 inputs to this speaker to make the whole system work:


 Green: Front Speakers

 Black: Rear Speakers

 Orange:Subwoofer and Center

These are the sound inputs and they pass through a small circuit in the Front Right speaker when they then go to the Subwoofer to be amplified and distributed.

The Front Right Speaker also controls the output, by means of the potentiometer, switch and headphone sockets, the functions of the circuit are at the bottom and the pinout for the 15pin HD D-connector is below. The numbers are different from common 15pin HD D-connectors but they follow the pinout diagram.

 1  Green Left  
 2  Green Right  
 3  Orange Left  (Center)*
 4  Black Left  
 5  Black Right  
 6  Orange Right (Subwoofer)*
 7  - Not Used
 8  Headphone Circuit See Below
 9  - Unknown
 10  GND Ground
 11  Switch + LED Circuit See Below
 12  Headphone Circuit See Below
 13  Speaker IN -ve  
 14  Speaker IN +ve  
 15  Switch Circuit See Below

*I think this is correct however I may be wrong,
Switch Layout

The Switch is a DPDT switch:



O O PIN 11
 6V O IN O  PIN 15
 Unused O OFF O Unused

Potentiometer Layout

The Potentiometer has 6 Input and Outputs for each channel, providing between 10K and 0K resistance.

Each pin has this Layout:
+   OUT   -
  |-[  10K  ]-|




O O Orange Right (Sub)*
O O O Black Right
O O O Black Left
O O Orange Left (Center)*
O O O Green Right
O O O Green Left

Headphone Circuit

 The headphone socket contains two pins that break the circuit if anything is plugged in.
This determines whether or not to allow the speakers and amplifier to work in the Subwoofer.
This is the circuit:

Pin 8      Switch Headphone Socket  Pin 12    
O-----------O/ O---------------O _|_ O-----------O 

If there is not a direct connection between 8 and 12 sound will only come out of the headphone socket.

LED Circuit

6V comes out of the switch and into the power LED, this then has a few resistors but ends up at pin 11. Im guessing pin 11 is some sort of Ground or leads onto another circuit inside the Subwoofer, therefore can't really so much with pin 11.

Switch Circuit

 There is 6V coming into the speaker and this passes through the main DPDT Switch. When the switch is closed the 6V isn't taken anywhere significant or obvious as far as I could tell. But when it is on it goes to the Power LED and then on to more things that I haven't looked at. The other side of the DPDT links pin 15 and 11 together which must form another circuit inside the Subwoofer activating the amplifier and speakers.

Therefore as with the headphone socket there needs to be a direct connection between pin 15 and 11 to make the speaker work.


15 pin highdensity D-SUB female connector layout
15 pin highdensity D-SUB female connector
According to 5 reports in our database (5 positive and 0 negative) the Logitech x-530 audio Connector pinout should be correct.

Is this pinout
Logitech x-530 audio Connector visual pinout:click to enlarge
Source(s) of this and additional information: I tested each pin on my speakers to work out an alternate means of controlling them.
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