--- title: HN7 Navigator - Want more volume? description: "There are a couple of options to make the audio output of your Navigator louder: HN7 units supplied started with batch number 0914 do NOT include the FM Transmitter functionality. The batch number is" --- [Skip to content](https://kb.hemamaps.com/navigator-want-more-voloume#main-content) English Show submenu for translations [Submit a ticket](https://kb.hemamaps.com/kb-tickets/new?hsLang=en) [Customer portal](https://kb.hemamaps.com/tickets-view?hsLang=en) ![Hema Maps Logo (1)](https://kb.hemamaps.com/hs-fs/hubfs/Hema%20Maps%20Logo%20(1).png?width=128&height=72&name=Hema%20Maps%20Logo%20(1).png) Open main navigation Close main navigation - English Show submenu for translations - [Submit a ticket](https://kb.hemamaps.com/kb-tickets/new) - [Customer portal](https://kb.hemamaps.com/tickets-view) - [Shop](https://hemamaps.com/) [Shop](https://hemamaps.com/) How can we help? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://kb.hemamaps.com/?hsLang=en) 2. [HN7 (Legacy Unit)](https://kb.hemamaps.com/hn7-legacy-unit?hsLang=en) 3. [HN7](https://kb.hemamaps.com/hn7-legacy-unit?hsLang=en#hn7) # HN7 Navigator - Want more volume? There are a couple of options to make the audio output of your Navigator louder: - Configure and use the **FM transmitter function** to output the audio to your car audio system - that way the audio output can be as loud as your car stereo can go. NOTE! HN7 units supplied started with batch number 0914 do NOT include the FM Transmitter functionality. The batch number is visible within the unit serial number: HN7AAU**0914**001449 This means all units manufactured since September 2014 - Plug in an **extension speaker** into the headphone socket on the side of the Navigator. 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