Hello!
I have HK Logic7 sound system in my MB W211 T, and added Z623 Sub into trunk for more bass.
Aux cable connected to factory sub cable:
![IMG-20230311-WA0006.jpg IMG-20230311-WA0006.jpg](https://www.caraudio.com/data/attachments/54/54423-d64cb7955ef7c871df7865427f3bc9d9.jpg)
It plays very good, even the rear view mirror vibrates now![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Bypassed this:
With this:
I have two questions:
1) How i could make the sub play only bass, can hear lyrics also at the moment. Factory sub plays only bass, no higher notes. Logitech sub has Amp inside, maybe it affects it?
2) If i turn music volume down from head unit, Z623 volume stays the same, factory sub's volume goes down (HK sub box is empty inside. Nothing between below sub and Aux cable). Dual voice coil subwoofer:
Should i add Hi-Low converter between original cable and sub's RCA connectors?:
I have HK Logic7 sound system in my MB W211 T, and added Z623 Sub into trunk for more bass.
Aux cable connected to factory sub cable:
![IMG-20230311-WA0006.jpg IMG-20230311-WA0006.jpg](https://www.caraudio.com/data/attachments/54/54423-d64cb7955ef7c871df7865427f3bc9d9.jpg)
It plays very good, even the rear view mirror vibrates now
Bypassed this:
With this:
I have two questions:
1) How i could make the sub play only bass, can hear lyrics also at the moment. Factory sub plays only bass, no higher notes. Logitech sub has Amp inside, maybe it affects it?
2) If i turn music volume down from head unit, Z623 volume stays the same, factory sub's volume goes down (HK sub box is empty inside. Nothing between below sub and Aux cable). Dual voice coil subwoofer:
Should i add Hi-Low converter between original cable and sub's RCA connectors?:
Last edited: