4x3500HD Dual Mode Preset Recall Does Not Exit Bridge Mode

Escalation Article

Table of Contents

Brand: Summary: Escalation Ticket: JIRA Ticket: Problem: Affected Environment Symptoms Expected Behavior Actual Behavior Solution: Workaround Recovery Status Affected Products: Boards / Assemblies Affected Serial Number Range

Brand:

Crown

Summary:

On Crown 4x3500HD amplifiers, recalling a preset from the front panel may fail to switch outputs from bridge mode back to dual (unbridged) mode. This can occur after the amplifier has been configured in bridge mode using Audio Architect and then operated without the software running.

Escalation Ticket:

TSC-00463748-ESC001

JIRA Ticket:

HPSD-31482

Problem:

Affected Environment

This issue was confirmed using the current versions of firmware and software as of May 6, 2026.

Product: Crown 4x3500HD
Firmware version: v1.0.5.21
Display version: v2.0.1.2
Audio Architect 2.55.3

Symptoms

After recalling a non-bridged preset from the front panel, outputs remain effectively bridged.
Even-numbered channels display “N/A” on the front panel.
Front-panel LEDs indicate bridged operation (e.g., only odd channels show a Ready LED).

Expected Behavior

Recalling a non-bridged preset should return channels to dual mode.

Actual Behavior

Channels previously bridged do not revert to dual mode when a non-bridged preset is recalled from the front panel.

Solution:

Workaround

Do not close Audio Architect while the amplifier is set to a preset with bridged outputs.

Recovery

If the problem has already occurred, perform a factory reset on the amplifier. Then reprogram the amplifier and be sure it is on the default preset or another non-bridged preset before closing Audio Architect.

Status

This issue has been reproduced and escalated to determine the root cause and address it via a future firmware or software update.