diff --git a/app/server.py b/app/server.py
index 2bce1bc..a1e7431 100644
--- a/app/server.py
+++ b/app/server.py
@@ -39,7 +39,7 @@ class TTSRequest(BaseModel):
engine: str | None = Field(None, description="엔진 ID (melo / coqui-kss 등)")
language: str = Field("KR", description="언어 코드")
speaker: str | None = Field(None, description="화자/모델 ID")
- speed: float = Field(1.0, ge=0.5, le=2.0, description="말하기 속도")
+ speed: float = Field(1.4, ge=0.5, le=2.0, description="말하기 속도")
pitch: float = Field(0.0, ge=-12.0, le=12.0, description="피치(반음)")
diff --git a/frontend/index.html b/frontend/index.html
index 9a63e9a..7dee231 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -43,9 +43,9 @@