# Build Stereo vs Surround

**URL:** <https://qa.fmod.com/t/build-stereo-vs-surround/18994>\
**Category:** FMOD Studio\
**Created:** [July 12, 2022, 3:41pm UTC](https://qa.fmod.com/t/build-stereo-vs-surround/18994 "2022-07-12T15:41:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![davidames](https://avatars.discourse-cdn.com/v4/letter/d/8dc957/32.png) [@davidames](https://qa.fmod.com/u/davidames)\
**Post date:** [July 12, 2022, 3:41pm UTC](https://qa.fmod.com/t/build-stereo-vs-surround/18994/1 "2022-07-12T15:41:45Z")

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Hi there. Ive been looking for ways to reduce the bank size of my game. And as im using only Stereo assets, i tryed to change de surround speaker mode to Stereo, but i found the build size is the same.

Also, when i record with the profiler i get 5 channels wavs.

So the question is.

1- How do i change my project settings to use Stereo as default.  
2- How does the bank build works in terms of channel count when the assets/events are stereo? Does FMOD automaticaly create a stereo bank even if the surrround mode is set to 5.1? Is that why i dont see any change on the bank size?

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**Author:** ![tamachan87](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/tamachan87/32/3691_2.png) [@tamachan87](https://qa.fmod.com/u/tamachan87)\
**Post date:** [July 12, 2022, 11:42pm UTC](https://qa.fmod.com/t/build-stereo-vs-surround/18994/2 "2022-07-12T23:42:39Z")

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Building banks doesn’t affect the channel count of the individual assets. They’ll always have the same channels as their raw audio file. The speaker mode only affects the up/downmix of the spatializer.

You need to change the encoder settings in the Edit \> Preferences \> Build \> Platform section. Quality and sample rate will be the main contributors to bank size.