{"product_id":"douk-audio-nobsound-g2-subwoofer-amplifier-100w-mono","title":"Douk Audio Nobsound G2 Subwoofer Amplifier 100W Mono","description":"\u003cstrong\u003eCompact yet powerful, the Douk Audio Nobsound G2 is a switchable mini mono amplifier that delivers up to 100W for passive subwoofers or a single-channel speaker using PBTL\/BTL bridging.\u003c\/strong\u003e\n\n\u003cp\u003eThe Nobsound G2 is designed for users who want a small-footprint amplifier that can serve either as a dedicated subwoofer amp or as a mono channel driver. With a dedicated mode switch, selectable gain levels, low-pass filtering and speaker protection, it aims to add low-frequency authority to a home theater or drive one channel cleanly in bridged configurations. The unit ships with a 19V 4.74A external supply and uses TI and NE op-amp components for stable performance.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I use the G2 as a subwoofer amplifier?\u003c\/h3\u003e\n\u003cp\u003eSwitch the G2 into SUB mode to enable its low-pass filter and bass controls, then connect a passive subwoofer to the speaker terminals. The onboard cutoff knob tailors the crossover point so the sub receives only low frequencies, while gain settings match the sub’s sensitivity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSet mode switch to SUB to enable bass filtering.\u003c\/li\u003e\n  \u003cli\u003eAdjust cutoff frequency knob to blend with main speakers.\u003c\/li\u003e\n  \u003cli\u003eChoose gain (20\/26\/32\/36 dB) to align output with your system.\u003c\/li\u003e\n  \u003cli\u003eUse the 19V\/4.74A supply for stable 100W peak output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan the G2 drive a single full-range speaker or be bridged for more power?\u003c\/h3\u003e\n\u003cp\u003eYes — in PBTL\/BTL mode the amplifier operates as a mono bridge, suitable for driving a single channel with higher voltage swing compared with standard stereo units. Two G2 units can be paired to handle left and right channels independently, eliminating cross-talk between channels.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlip to PBTL\/BTL mode for bridged mono operation.\u003c\/li\u003e\n  \u003cli\u003ePair two units for separate left and right channels with no interference.\u003c\/li\u003e\n  \u003cli\u003eBuilt-in speaker protection reduces risk of damage under load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat controls and settings are available to tune the sound?\u003c\/h3\u003e\n\u003cp\u003eThe G2 offers a four-position gain switch and a continuous bass cutoff control so you can match signal level and crossover to your speakers and room acoustics. These controls help preserve signal clarity while avoiding unnecessary attenuation from inline resistors.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGain selector with 20, 26, 32 and 36 dB options for level matching.\u003c\/li\u003e\n  \u003cli\u003eVariable low-pass cutoff knob for precise bass integration.\u003c\/li\u003e\n  \u003cli\u003eNE5532 op-amp and TI TPA3116 stage for noise reduction and stable output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow reliable is the G2 for home theater use?\u003c\/h3\u003e\n\u003cp\u003eThe G2 includes speaker protection circuitry, a low-pass filter tailored for sub use, and an external high-quality power supply to maintain steady performance. Its compact chassis makes it easy to fit into AV racks or tight cabinet spaces while minimizing audible background noise.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpeaker protection circuit helps safeguard connected drivers.\u003c\/li\u003e\n  \u003cli\u003eOptimized PCB layout reduces hum and background noise.\u003c\/li\u003e\n  \u003cli\u003eExternal 19V\/4.74A adapter ensures consistent power delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Douk Audio Nobsound G2 is aimed at home theater enthusiasts, DIY audio builders and small-room listeners who need a compact, flexible mono amplifier. It suits owners of passive subwoofers who want a dedicated sub amp, or anyone seeking a bridged mono solution for a single high-power channel. If you want simple controls for crossover and gain, a small form factor, and the option to scale to stereo by adding a second unit, the G2 is a practical choice.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use one G2 to power both left and right speakers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — the G2 is a mono amp. To power stereo left and right independently, use two G2 units, one per channel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What input types does the G2 accept?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The amplifier accepts standard line-level inputs (RCA) and features binding post speaker outputs for passive drivers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Douk Audio","offers":[{"title":"Default Title","offer_id":48413440049309,"sku":"B07MR6YCQ1","price":76.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/douk-audio-g2-front-panel.jpg?v=1781266094","url":"https:\/\/nexoltic.com\/products\/douk-audio-nobsound-g2-subwoofer-amplifier-100w-mono","provider":"Nexoltic","version":"1.0","type":"link"}