ACX Audiobook Recording
Near Miami —
First-Pass Approval.
ACX rejection is one of the most frustrating experiences for self-publishing authors. At Podcast HQ, every audiobook we produce is mastered to exact ACX specifications — so your files pass on first submission, every time.
500+
Audiobooks Produced
ACX
First-Pass Approval
2
South Florida Locations
$300
Packages From
ACX Technical Specifications — What We Deliver
Every file PHQ delivers meets or exceeds these specs. Your engineer verifies compliance before sending your final files.
| Spec | Required Value | What It Means |
|---|---|---|
| RMS Level | -23 dB to -18 dB | Overall loudness target |
| Peak Level | -3 dB maximum | No digital clipping |
| Noise Floor | Below -60 dB | Room noise and electrical hiss |
| Sample Rate | 44.1 kHz | Standard for ACX submission |
| File Format | 192 kbps MP3 | Per-chapter delivery |
| Opening/Closing Room Tone | 0.5 seconds | Required at head and tail of each file |
Why ACX Rejections Happen — And Why They Won't Happen Here
Common cause: Home recording room noise
Our isolation booths eliminate all ambient noise at the source.
Common cause: Incorrect RMS levels from DIY compression
We use professional mastering tools calibrated to ACX RMS targets.
Common cause: Clipping from hot recordings
Engineers monitor gain structure throughout — no peaks above -3 dB.
Common cause: Wrong file format or sample rate
Files are exported to ACX spec as standard — 192 kbps MP3, 44.1 kHz.
ACX Recording Miami — FAQs
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ACX-Compliant Audiobook Production Near Miami
No rejections, no guesswork. Files mastered to spec, chapter-organized, and ready for Audible submission — from our Hollywood and Wynwood studios.