What are the bass, treble, and subwoofer frequency ranges of the BT30D?

Bass and treble frequency range: 20Hz - 20kHz (±12dB) Subwoofer frequency range: 20Hz - 300Hz.

Does the passive speaker output provide full-range signal on BT30D?

The passive speaker outputs send a full-range signal to the speakers; it is unable to remove the low-end frequencies. A bass knob will not change the gain on your amplifier, but the bass level.

What type of port is the sub out on BT30D?

The sub out terminal on the back of the BT30D is an RCA output.

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Fosi Audio BT30D Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 Channel Mini Hi-Fi Class D Integrated Amp 50 Watt x2+100 Watt for Home Outdoor Passive Speakers/Subwoofer Powered Subwoofer

Product ID: 90732501

Details

Item dimensions L x W x H
5.2 x 4.72 x
Manufacturer
Fosi Audio
Maximum Supply Voltage
24 Volts (DC)
Minimum Supply Voltage
24 Volts (DC)
Voltage
230 Volts

🎵Dedicated 100W subwoofer channel

📶Bluetooth 5.0 with 50ft range

🔊50W x2 stereo channels

€ 181.44

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate your sound game with Fosi’s sleek, powerful 2.1 Bluetooth amp — don’t just listen, experience!

COMPACT POWERHOUSE - Mini Class D amp delivering crisp 200W total output for immersive sound anywhere.
SPACE SMART DESIGN - Sleek, small footprint fits discreetly in any home or outdoor setup.
SEAMLESS CONNECTIVITY - Bluetooth 5.0 plus RCA inputs ensure effortless pairing with all your devices.
TAILORED AUDIO CONTROL - Adjust bass, treble, sub volume & frequency for your perfect Hi-Fi vibe.
RELIABLE COOL RUNNING - Runs cool with high-efficiency TI chips, built for 24/7 premium performance.

The Fosi Audio BT30D is a compact 2.1 channel Class D amplifier featuring Bluetooth 5.0 connectivity, delivering 50 watts per stereo channel plus 100 watts dedicated to a subwoofer. Powered by Texas Instruments TPA3116D2 chips, it offers efficient, clear audio with adjustable bass, treble, and subwoofer controls. Its small footprint and versatile inputs make it ideal for home or outdoor passive speaker setups, providing stable wireless streaming up to 50 feet. Despite marketing wattage claims, it reliably powers most passive speakers and subwoofers with clean sound and minimal heat, perfect for millennials seeking high-quality, space-saving audio solutions.

Specifications

ASIN	B07K7NJ4QN
Best Sellers Rank	#9,683 in Electronics ( See Top 100 in Electronics ) #43 in Audio Component Amplifiers
Brand	Fosi Audio
Customer Reviews	4.4 out of 5 stars 2,984 Reviews
Item Weight	1.1 kg
Manufacturer	Fosi Audio
Mfr Part Number	BT30D
Model Number	BT30D
Number of Items	1
Unit Count	1 Count
Warranty Description	18-month manufacturer

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