UPC1237 Speaker Protection Board – Delay Mute & DC Offset
UPC1237 Speaker Protection Board – Delay Mute & DC Offset
UPC1237 Speaker Protection Board for HiFi & DIY Audio Amplifiers
Keep your speakers safe and your sound system performing at its best with the UPC1237 Speaker Protection Circuit Board. Designed for DIY audio enthusiasts and audiophiles alike, this compact board integrates seamlessly into any 12V–24V amplifier setup, guarding your speakers against startup thumps and harmful DC voltage levels.
Key Features
- Wide Power Supply Range: Compatible with 12V to 24V DC supplies, making it a versatile drop-in solution for a broad range of audio amplifier projects.
- Boot Delay Mute Function: Automatically mutes audio output at power-on for a brief period, eliminating disruptive startup thumping sounds and ensuring a smooth, clean start every time.
- DC Offset Monitoring: Continuously monitors for unwanted DC voltage levels that could damage your speakers — if a DC offset is detected, the relay disconnects the speaker immediately to protect it.
- DIY-Friendly Design: Easy to integrate into existing HiFi power amplifiers or custom audio builds with minimal wiring effort — ideal for hobbyists and experienced builders.
- Speaker Longevity Assurance: By blocking DC signals from reaching your drivers, this board helps preserve the integrity and lifespan of your speakers over time.
Specifications
| Part Name | UPC1237 Speaker Protection Board |
| Material | Metal & Plastic |
| Dimensions | 5.25 × 3.1 × 4 cm |
| Available Colors | Blue, Black |
| Operating Voltage | 12V – 24V DC |
| Battery Included | No |
| Wireless | No |
| Country of Origin | Made in Mainland China |
What's in the Box?
- 1 × UPC1237 Speaker Protection Board
Note: Actual color may vary slightly from images due to monitor brightness settings. Please allow minor measurement tolerances of ±1–3 mm.
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Frequently Asked Questions
Q: What power supply voltage does the UPC1237 speaker protection board require?
A: The UPC1237 speaker protection board operates with a wide input voltage range of 12V to 24V DC, making it compatible with most home audio amplifier power supplies and DIY HiFi projects.
Q: How does the DC offset detection feature protect my speakers?
A: The board continuously monitors the amplifier output for harmful DC voltage. If a DC offset is detected, the onboard relay instantly disconnects the speakers, preventing potential damage to the drivers and preserving their longevity.
Q: Is this board suitable for a beginner DIY audio builder?
A: Yes — the UPC1237 is designed with a DIY-friendly layout that makes it straightforward to wire into an existing amplifier circuit. Basic soldering skills and familiarity with audio circuit wiring are recommended for best results.