DSX-GS80 with 2x2 ohms subwoofer

[orgovanj]

Dear Sony Community,

Recently I have bought a head unit type DSX-GS80. The reason why I chose this product because - according to the user manual, which is available through the Sony website - it is capable to drive a subwoofer directly. According to the user manual, I installed the new head unit to the car. I looked at the menu options but I sadly saw that in the [GENERAL] group, there is no [SPEAKER LOAD] option, so I can't set the speaker load to 2 ohms. (Operating Instrucions page 14) In the Menu,there is no [SUBW MODE] and [SUBW DIRECT] options, so I cant do the settings listed in the Operating Instrucions page 14. My subwoofer has a double voice coiled type speaker, which has 2 ohms of impedance of each coil.

My questions are:

- Is my subwoofer compatible with the DSX-GS80 in 2x2 ohms configuration? (I can imagine that it is compatible in 1x4 ohm configuration, but I would like to use it in 2x2 ohms setup because of the higher output power).

- How to setup the head unit to drive the subwoofer directly? (My guess is the Rear Bass Enhanche option)

- Do I have to update the firmware of the head unit? If I have to, where can I find the correct firmware file and how to update it?

- Do the DSX-GS80 have an overload protection?

I hope that Sony Community members would answer my question soon!

Thank you in advance!

Best regards,

József Orgován

[Marino.Manolo · Accepted solution]

SPEAKER LOAD (speaker impedance load)

(Available only while the source is off and the clock is displayed.)

https://helpguide.sony.net/ev/dsx-gs80/v1/en/contents/TP0002433778.html

Sound Setup (SOUND)

This setup menu is not available when the source is off and the clock is displayed.

https://helpguide.sony.net/ev/dsx-gs80/v1/en/contents/TP0002433779.html

[Marino.Manolo]

No new Firmware:
https://www.sony.co.uk/electronics/support/mobile-cd-players-digital-media-players-dsx-series/dsx-gs...

[Marino.Manolo]

A subwoofer with two 2 ohm coils each in a 2x2 ohm configuration could deliver more power than a subwoofer with a single 4 ohm coil. This is due to the possibility of connecting the coils in series or parallel to obtain different impedance configurations.

- In the case of the 2x2 ohm Subwoofer, connecting the two coils in Parallel would obtain an impedance of 1 ohm, while connecting them in Series would provide an impedance of 4 ohm.

- In the case of the 1x4 ohm Subwoofer, you will only have one impedance option, which is 4 ohm.

DSX-GS80 cannot handle 1 ohm impedance.

[orgovanj]

Hello,

Thanks for your answer.

My sub has 2 coils, 2 ohms each. I would like to use it as one coil would be connected to the rear left channel, and the other coil would be connected to the rear right channel. If I set the output impedance to 2 ohms, will it be OK?

The front speakers has 3 ohms impedance.

Thank you!

[Marino.Manolo]

The important thing I would say is not to connect them in Series or Parallel...