Can i use this amp to bypass my knackered active amp ie just usse the shell and connect direct to the speaker?

Yes I bought it to do this myself just had to open the sub and disconnect the plate amp. Used the speaker connections for convenience wired to be a passive sub.

Can I use this amplifier with active subwoofer only? (Without connecting anything to speaker output?)

No it need a full range speaker and then used with an active sub woofer

Can this work with tpa3116 amplifier (ns-15g) and nobsound 6j2 vacuum tube preamplifier? i want to add a subwoofer to my hi fi.

as long as your current amplifier has a sub out channel or any such output that can provide a signal such as a tape out.

Can i connect a 100 w bookshelf speaker and 150w active subwoofer in the full frequency mode ? at the same time ? thx

In full frequency mode the unit is just a straight forward amp and will drive a passive bookshelf as normal. Since you are using an active sub it will tap of the signal going to the bookshelf again as normal.

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Nobsound G2 PRO 300W Subwoofer Amplifier, Mini Mono Channel Class D Integrated Sub Amp, Full-Frequency and Bass Switchable Home Theater Audio Amplifier for Passive Speakers/Active Subwoofer

Nobsound G2 PRO 300W Subwoofer Amplifier, Mini Mono Channel Class D Integrated Sub Amp, Full-Frequency and Bass Switchable Home Theater Audio Amplifier for Passive Speakers/Active Subwoofer

Product ID: 145214571

Details

Manufacturer
Nobsound
Maximum supply voltage
35 Volts
Minimum supply voltage
24 Volts (DC)
Mounting type
Freestanding
Voltage
24 Volts (DC)

⚡300W peak power output

🔄Dual PBTL/SUB mode switch

🎚️Adjustable SUB frequency 40-300Hz

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Description

🎧 Small Size, Massive Impact – Amplify Your Audio Game!

COMPACT ELEGANCE - Sleek, durable aluminum chassis fits perfectly in any modern home or desktop audio environment.
CUSTOM BASS CONTROL - Fine-tune your low-end with a SUB frequency range from 40 to 300Hz for immersive, distortion-free bass.
POWERHOUSE IN A PALM - Delivers a robust 300W output to effortlessly drive passive speakers or subwoofers without distortion.
PRO GRADE PROTECTION - Built-in speaker protection and low-pass filter ensure crystal-clear sound even at max volume.
VERSATILITY MEETS PRECISION - Switch seamlessly between full-frequency and dedicated subwoofer modes for tailored audio setups.

The Nobsound G2 PRO is a compact yet powerful 300W mono Class D amplifier designed for audiophiles seeking versatile sound control. Featuring a dual-mode PBTL/SUB switch, adjustable subwoofer frequency tuning, and a robust TPA3255D2 chip, it delivers pristine HiFi sound with built-in protection circuits. Its stylish aluminum build and compatibility with both passive and active subwoofers make it a must-have for modern home theater and desktop audio setups.

Specifications

ASIN	B07TTMN51V
Best Sellers Rank	52,195 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 261 in Hi-Fi Amplifiers
Brand	Nobsound
Customer Reviews	4.2 4.2 out of 5 stars (210)
Item Weight	0.5 Kilograms
Manufacturer	Nobsound
Manufacturer Part Number	DZ072_UK
Material	Metal
Maximum Supply Voltage	35 Volts
Minimum Supply Voltage	24 Volts (DC)
Model Number	DZ072_UK
Mounting Type	Freestanding
Number of Channels	1
Output Power	300 Watts
Package Type Name	Cardboard Box
Specification Met	CE
Supply Current	5 Amps
Unit Count	1.0 count
Voltage	24 Volts (DC)

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1362 kr

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In stock

Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Denmark.

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