A local LatAm conversion failed the content gate
A local MLX conversion of the LatAm package was compared with the existing multilingual Q8 and an original FP32 route. All active weights were loaded strictly, but that alone did not establish correct speech.
Accent labels are not acceptance results
A local MLX conversion of the LatAm package was compared with the existing multilingual Q8 and an original FP32 route. All active weights were loaded strictly, but that alone did not establish correct speech.
What the paired clips showed
The current Q8 and community FP32 each had zero content edits over 142 reference words after the recorded normalization. Local LatAm Q8 had nine; local LatAm FP32 had eight. Those counts do not diagnose a defect in the upstream model because its original runtime was not evaluated.
An FP16-vocoder experiment preserved the Q8 output closely. A cleaner five-pair AB/BA recheck measured 2.969 versus 2.970 seconds, both RTF 0.675, with identical speech tokens. It established no useful speed gain.
Keep the working default
The tested conversion failed the content gate, so multilingual Q8 stayed selected. Strict and normalized word edits remain separate, and neither evaluates accent, voseo, emotion or human naturalness. No private reference recording is distributed here.
Evidence and publication boundary
This is an edited account of the recorded experiment. The linked archive is private; the methods, aggregate findings and limits are included above. Reference recordings, raw conversations, authentication material and workstation configuration are excluded.
Source: chatterbox-fidelity/community6-vs-coreml-2026-10-10/latam-mlx-test/README.md
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