Mono DC12V Low Pass Filter Board Subwoofer Preamp Bass Adjust Audio Filter Module

Mono DC12V Low Pass Filter Board Subwoofer Preamp Bass Adjust Audio Filter Module

Price :

$0.84

This low-pass filter preamp board adopts NE5532 op amp, supports DC10-24V single power supply, adjustable frequency 22Hz-300Hz and bass volume. It filters high-frequency signals and outputs pure low-frequency bass, perfect for DIY active subwoofer audio system.

Description

✅ 12V Single Power Low-pass Filter Board

✅ Subwoofer Preamp Board

✅ Adjustable Frequency & Volume

📌 Special Reminder

This board is a subwoofer front stage board. It cannot drive speakers directly. You need to connect it to a pure power amplifier board to build an active subwoofer and produce sound. Choose the power amplifier according to your demands; higher power brings stronger bass performance.

The low-pass filter filters out high-frequency audio above vocal range, retains low-frequency signals and amplifies bass. Only bass output can be heard, without human voice or high-frequency instrument sound.

📋 Version Characteristics

All components are brand new premium parts. Frequency adjustment capacitor adopts original Philips CBB capacitor; potentiometer is Taiwan full-sealed type; input & output terminals are pure copper terminals for convenient wiring.
Operational amplifier uses Texas NE5532, equipped with IC socket. Op-amps can be replaced freely to test different sound effects and improve playability.
Built-in LED indicator to monitor power supply status in real time.
Optimized PCB layout with high signal-to-noise ratio and strong anti-interference. Nearly no background noise when no audio input.

📊 Main Parameter

Power Supply Voltage: DC10~24V Single DC Power

Frequency Range: 22Hz~300Hz

Audio Input: Mono / Dual Channel

Audio Output: Mono

PCB Size: 78×32mm, Thickness:1.6mm

PCB Material: High Hardness FR-4 Fiberglass Board

Finished Board Weight: 30g

Mounting Hole Center Spacing: 70×24mm, Hole Diameter:3.2mm

Potentiometer Shaft Center Distance:32.5mm

📏 Product Size

Kind reminder: manual measurement may have slight errors

Dimension:79mm × 33mm

Net Weight:31g

⚙️ Wiring Introduction

DC 12V Input: Power supply access

AUDIO IN: Left / Right channel audio input, GND ground

Output: Low-frequency signal output, connect to pure post power amplifier

Two Potentiometers

▸ Frequency Regulation: Adjust cut-off frequency

▸ Volume Control: Adjust bass output volume

Downloads

PDF File

Mono DC12V Low Pass Filter Board Subwoofer Preamp Bass Adjust Audio Filter Module

Price :

$0.84

Description

✅ 12V Single Power Low-pass Filter Board

✅ Subwoofer Preamp Board

✅ Adjustable Frequency & Volume

📌 Special Reminder

📋 Version Characteristics

All components are brand new premium parts. Frequency adjustment capacitor adopts original Philips CBB capacitor; potentiometer is Taiwan full-sealed type; input & output terminals are pure copper terminals for convenient wiring.
Operational amplifier uses Texas NE5532, equipped with IC socket. Op-amps can be replaced freely to test different sound effects and improve playability.
Built-in LED indicator to monitor power supply status in real time.
Optimized PCB layout with high signal-to-noise ratio and strong anti-interference. Nearly no background noise when no audio input.

📊 Main Parameter

Power Supply Voltage: DC10~24V Single DC Power

Frequency Range: 22Hz~300Hz

Audio Input: Mono / Dual Channel

Audio Output: Mono

PCB Size: 78×32mm, Thickness:1.6mm

PCB Material: High Hardness FR-4 Fiberglass Board

Finished Board Weight: 30g

Mounting Hole Center Spacing: 70×24mm, Hole Diameter:3.2mm

Potentiometer Shaft Center Distance:32.5mm

📏 Product Size

Kind reminder: manual measurement may have slight errors

Dimension:79mm × 33mm

Net Weight:31g

⚙️ Wiring Introduction

DC 12V Input: Power supply access

AUDIO IN: Left / Right channel audio input, GND ground

Output: Low-frequency signal output, connect to pure post power amplifier

Two Potentiometers

▸ Frequency Regulation: Adjust cut-off frequency

▸ Volume Control: Adjust bass output volume

Downloads