Calibration¶
The Calibration page holds your Dirac Live filter slots and the per-speaker delay and trim values that ride on top of them. For setting output levels and the maximum output voltage, see Volume Setup. For lip-sync delay, see Inputs — it is set per input, not on this page.
Dirac Live Filter Slots¶
Up to six Dirac Live filter slots are available. Each slot holds one calibration produced by the Dirac Live app. Click a tab to switch slots. An empty slot shows as "Uncalibrated".
Naming a Slot¶
You can rename a slot from the HTP-1 side, independently of the name Dirac Live gave it. Click the pencil icon next to the active slot's name, type a new name, and press Enter. This is only available for an empty slot — once a calibration is loaded into a slot, its name comes from Dirac Live and cannot be changed here.
Notes¶
Each slot has a Notes field below the table. Use it to record anything about that calibration — which microphone positions you used, which speaker layout it covers, or why you made it. Notes are saved with the slot and are visible only in the HTP-1 UI.
Filter Types¶
A slot's calibration can be one of four types. The type appears as a small superscript badge after the slot name:
| Badge | Filter Type | What it means |
|---|---|---|
| RC | Dirac Live Room Correction | Standard room correction, each speaker treated individually. |
| BM | Dirac Live Bass Management | Room correction with Dirac Live's own bass management. |
| BC | Dirac Live Bass Control | Room correction with Bass Control optimization across multiple subwoofers. |
| ART | Dirac Live Active Room Treatment | Room correction where all speakers are optimized together as a matrix. |
See Dirac Live for more on how these differ.
The Delay and Trim Table¶
Each active speaker gets a row. Columns:
| Column | What it shows |
|---|---|
| Dirac Live Calibration Delay | The delay Dirac Live measured for this speaker. Read-only. |
| User Delay | Your own additional delay, 0–100 ms in 0.1 ms steps. Added to the calibration delay. |
| Total Delay | Calibration delay plus user delay. |
| Dirac Live Calibration Trim | The trim Dirac Live measured for this speaker. Read-only. |
| User Trim | Your own additional trim, −12 to 12 dB in 0.5 dB steps. Added to the calibration trim. |
| Total Trim | Calibration trim plus user trim. |
| Mute Speaker | Mutes the speaker. Only shown when Show Advanced Settings is on. |
Warning
User delay and user trim are locked when a Bass Control (BC) or Active Room Treatment (ART) filter is loaded. Editing them here would work against what the filter is doing. Use the Channel Levels page instead to make a small, permanent level change under a BC or ART calibration.
A speaker whose calibration doesn't match the current speaker layout is highlighted, and a row can also turn red if it carries a leftover nonzero delay or trim from before a BC or ART filter was loaded — those values are no longer being applied and should be cleared.
If you have a seat shaker channel, it is greyed out in this table. Its delay and trim are always zero and cannot be edited here.
On a phone-sized screen the table becomes a set of cards, one per speaker, with a slot picker in place of the tab strip.
Show Advanced Settings¶
Turn on Show Advanced Settings to reveal the Mute Speaker column, Bulk Edit, and Advanced PEQ Options described below.
Bulk Edit¶
Bulk Edit applies one delay or trim value to several speakers at once. Select the speakers you want in Target Channels, enter a value, and click Apply User Delay to Selected Speakers or Apply User Trim to Selected Speakers. It respects the same BC/ART lockout as the per-speaker fields.
Mute All / Unmute All / Invert Mute¶
Three buttons let you manage mutes across every speaker at once: Mute All Speakers, Unmute All Speakers, and Invert Mute on All Speakers (mutes everything that was unmuted and unmutes everything that was muted). Muting a speaker preserves its trim, so unmuting restores the same value.
Advanced PEQ Options¶
The Change PEQ Configuration button opens the same dialog described in PEQ, for choosing whether PEQ runs before or after the Dirac Live filter.