# Cartesia TTS volume and emotion parameters not working
**URL:** https://community.livekit.io/t/cartesia-tts-volume-and-emotion-parameters-not-working/119
**Category:** Agents
**Tags:** tts, cartesia
**Created:** [January 21, 2026, 1:30pm UTC](https://community.livekit.io/t/cartesia-tts-volume-and-emotion-parameters-not-working/119 "2026-01-21T13:30:45Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@LiveKit-Community](https://community.livekit.io/u/LiveKit-Community)
#### Post date: [January 21, 2026, 1:30pm UTC](https://community.livekit.io/t/cartesia-tts-volume-and-emotion-parameters-not-working/119/1 "2026-01-21T13:30:46Z")
_This question originally came up in our Slack community and the thread has been consolidated here for long-term reference._
I’m trying to add volume and emotion parameters to my Cartesia TTS plugin as mentioned in the documentation, but I keep getting errors that these keys are not supported.
I’m using `livekit-agents[cartesia]~=1.2`.
Am I using an older package or is there another issue?
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### Author:  [@LiveKit-Community](https://community.livekit.io/u/LiveKit-Community)
#### Post date: [January 21, 2026, 1:30pm UTC](https://community.livekit.io/t/cartesia-tts-volume-and-emotion-parameters-not-working/119/2 "2026-01-21T13:30:48Z")
Not all configuration parameters work with all Cartesia models.
Emotions, speed, volume, and other parameters may only be available for specific models like Sonic 3 or a specific date version of Sonic 2, but not for Sonic (1).
This is a Cartesia limitation - they only allow certain parameters with specific models. Check which model you’re using and verify it supports the parameters you’re trying to set.