Is the subwoofer frequency knob an adjustable low-pass filter?

Yes frequency and gain aka volume separate from volume for everything..aswel as a slider volume so you can set the max anyone can turn the volume up..so they don't blow ..

If I was hook this up in my vehicle with about 13.6vdc-14.1vdc and 50-60amps then will it work or blow? If it’ll work then how many watts/channel???

I had the slightly weaker version setup in my vehicle. I wired the front speakers to the two speaker channels, and ended up wiring my rear 6x9s in series and wired those to the subwoofer channel. You must be careful with impedances if you do this to make sure you don't blow your speakers. But doing this gave me very good sound for not having an actual subwoofer. A dedicated, high power amplifier will have way more bump for an actual subwoofer, however, if you're ok with the idea of using your rear fill as a stand-in subwoofer, wire it up how I described and it'll sound pretty good. I also used a DC-DC buck converter to step my vehicle's 12-14V DC up to the optimal power level for the amplifier. They're all over amazon just search the input power by the output power and the amp rating and you'll be good to go.

Fuente recomendable para este equipo?

¿Quieres decir qué tipo de energía necesita? La fuente de alimentación de 12V-36V / (5-15A) DC puede impulsarlo. Si desea obtener una entrada de alta potencia, primero debe aumentar el voltaje de entrada o reducir la impedancia del altavoz.

To run a 4ohm sub and 4 ohm speakers what ah should I get for the 36v power supply?

This need depends on your needs, if your speaker power is relatively large, then it is recommended to use 36V. If the power of the speaker is not very large, the 24V DC power supply can also drive your speaker.

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TDA7498E Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 160W×2+220W, 15V-36V Audio Power Amplifier Module with Treble and Bass Control,BLACK (ZK-HT21)

TDA7498E Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 160W×2+220W, 15V-36V Audio Power Amplifier Module with Treble and Bass Control,BLACK (ZK-HT21)

Product ID: 440501326

Details

Item dimensions L x W x H
15 x 13.1 x
Voltage
36 Volts (DC)
Manufacturer
DAJUNGUO
Maximum Supply Voltage
24 Volts
Minimum Supply Voltage
15 Volts (DC)

⚡Wide 15-36V DC input range

🔊540W total output power

🎚️Adjustable treble & bass control

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฿11774

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate your audio game—power, precision, and protection in one sleek amp!

COMPACT YET MIGHTY - Sleek 15x13x2.6 cm design with metal heat sink keeps your setup cool and stylish without sacrificing power.
TAILOR YOUR SOUNDSCAPE - Fine-tune highs and lows effortlessly with dedicated treble and bass knobs—because your audio deserves depth and clarity.
PLUG PLAY COMPATIBILITY - Seamlessly integrates with standard 5.5mm*2.1mm DC adapters, plus includes a conversion plug for ultimate convenience.
BUILT TO PROTECT PERFORM - Advanced safeguards guard against short circuits, overheating, and reverse polarity—ensuring uninterrupted, worry-free listening.
IMMERSIVE 2 1 CHANNEL POWERHOUSE - Experience crystal-clear stereo with booming subwoofer output at 160W×2 + 220W for room-filling sound.

The TDA7498E Bluetooth Power Amplifier Board (ZK-HT21) delivers a robust 540W output across 2.1 channels, featuring a high-fidelity TDA7498E chip. It supports a wide DC input range (15-36V) and offers customizable treble and bass controls for a personalized listening experience. Designed with multiple protection mechanisms and broad adapter compatibility, this compact amplifier module is perfect for audiophiles seeking powerful, reliable sound enhancement.

Specifications

ASIN	B09K4WDHLK
Best Sellers Rank	#571,517 in Electronics ( See Top 100 in Electronics ) #1,002 in Hi-Fi Amplifiers
Brand Name	DAJUNGUO
Country of Origin	USA
Customer Reviews	4.2 out of 5 stars 278 Reviews
Included Components	DC conversion plug
Item Dimensions	15 x 13.1 x 2.6 Centimeters
Item Weight	327 Grams
Item dimensions L x W x H	15 x 13.1 x 2.6 Centimeters
Manufacturer	DAJUNGUO
Material Type	Metal, Plastic
Maximum Supply Voltage	24 Volts
Minimum Supply Voltage	15 Volts (DC)
Model Number	ZK-HT21
Mounting Type	Surface Mount
Number of Channels	2
Output Power	540 Watts
Package Type Name	Package
Specification Met	CE, FCC, RoHS
UPC	194852390676
Voltage	36 Volts (DC)

Reviews

C**.

An absolute beast if you support it with the right hardware...

28.07.2022

H**H

Bulit pruf.

12.12.2025

A**Z

Was pretty impressive.

26.12.2022

G**L

Wow! This thing sounds great!

26.04.2024

P**E

Sort of works, sounds like garbage.

25.02.2025

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