Speaker outputs
Four amplifier channels, default names Output 1–4. Each active channel has a live meter, mode badge, and (when relevant) Muted and INV badges.
Mute, polarity, and mode
| Control | Meaning |
|---|---|
| Mute / Unmute | Mutes that amplifier channel. Also available on the front panel. |
| Invert / Set Normal | Inverts polarity. The card shows INV when inverted. |
| Mode | Off, Normal, or Bridged. Off is treated as muted in the DSP. |
Bridging
Bridged is offered only on QXD5K and QXD1K, and only on Output 1 and Output 3.
- Output 1+2 or 3+4 become a pair. The master card shows
1+2or3+4and both names. - The unused (slave) card is dimmed: Bridged with {master}. It has no controls. The dashboard labels it BR.
Do not connect a load as two separate channels when the pair is bridged. Follow the hardware manual for bridged wiring.
Source and level
| Control | Range |
|---|---|
| Source | Zone 1–4 (current zone names) |
| Level | −80.0 to 0.0 dB, 0.5 dB steps |
An output can only listen to a zone, not directly to an input. To send an input to an output, set the zone source first.
Speaker preset
| Selection | Effect |
|---|---|
| Flat (No Processing) | UUID 0. No speaker EQ, FIR, limiter, or speaker crossover. User EQ and the output HPF/LPF still apply. |
| A library preset | {series} / {model} plus the preset name. Loads that speaker’s processing. |
Presets come from the loaded speaker library. If no library is loaded, only Flat is useful.
User mute is kept when a preset is applied. GPIO mute is handled separately — see GPIO.
Crossover (output HPF / LPF)
Independent high-pass and low-pass filters on the output, in addition to anything inside a speaker preset.
| Type |
|---|
| Off |
| 1st Order (6 dB/oct) |
| Bessel / Butterworth / Linkwitz-Riley at 12, 18, 24, and 48 dB/oct |
Frequency is 20 Hz – 20 kHz and is disabled while the type is Off. Setting a type other than Off enables the filter.
Delay
| Range | 0.0 – 100.0 ms |
| Units | Toggle ms or m (343 m/s at 20 °C, about 0–34.3 m) |
| Step | 0.01 ms / 0.001 m |
Use delay to time-align a fill, a delayed zone, or a driver that is not covered by the speaker preset.
User EQ
Ten parametric bands per output. See Parametric EQ. Copy from copies those ten bands from another output (not the speaker-preset EQ).