how much power rms at 8 ohms?

The manual mine came with "the 1000 Watt version" -- details it at providing 497 watts RMS at 8 ohms.

Anyone have an issue with the speaker out port not working?

First off , do you have a audio signal out from the receiver/ amp to the input of subwoofer? Please check wiring diagram of the manual it should work.

Does the SMP100 require a 12v trigger cable to work properly?

The SMP100 includes auto sensing that turns on the amp when an audio signal is detected then turns off automatically after 15 minutes when a signal is not detected, but it also has the manual on/off switch.

Will this work with a polk s35 center channel speaker?

Yes. But this amp would be overkill. Simply get an a/v receiver instead.

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OSD Audio SMP100 Subwoofer Amplifier 100W Class D Digital Subwoofer Amplifier Rated 100W Max, Black (SMP-100)

OSD Audio SMP100 Subwoofer Amplifier 100W Class D Digital Subwoofer Amplifier Rated 100W Max, Black (SMP-100)

Product ID: 80601359

Details

Item dimensions L x W x H
4.75 x 5.6 x
Manufacturer
OSD Audio
Mounting Type
Freestanding
Brand
OSD Audio
Number of Channels
1

⚡Class D high efficiency

📏Compact 4.75x5.6 inch design

🔊100W peak power

Description

🎶 Feel the bass, not the bulk — compact power that transforms your soundscape!

SPACE SAVVY DESIGN - Compact footprint fits discreetly anywhere, ideal for sleek, modern home theater setups.
POWERFUL BASS IMPACT - Delivers up to 100W peak for deep, room-shaking low frequencies that command attention.
PRECISION BASS TUNING - Adjust phase, crossover, and volume controls to perfectly tailor your bass experience.
UNIVERSAL COMPATIBILITY - Works seamlessly with all receivers via RCA and speaker-level inputs for ultimate system flexibility.
ENERGY SMART AUTO ON OFF - Auto-sensing standby mode saves power by switching off after 15 minutes of silence—effortless and eco-friendly.

The OSD SMP100 is a 100W Class D digital subwoofer amplifier designed for efficient, powerful bass delivery in a compact form factor. Compatible with a wide range of audio receivers, it features adjustable phase, crossover, and volume controls for precise sound customization. Its auto on/off sensing enhances energy efficiency, making it a smart addition to any home theater or multi-room audio system.

Specifications

ASIN	B07HJDQ8Q3
Best Sellers Rank	#43,319 in Electronics ( See Top 100 in Electronics ) #246 in Audio Component Amplifiers
Brand	OSD Audio
Brand Name	OSD Audio
Customer Reviews	4.1 out of 5 stars 77 Reviews
Included Components	Subwoofer Amplifier
Item Dimensions	4.75 x 5.6 x 1.8 inches
Item Weight	1.8 Pounds
Item dimensions L x W x H	4.75 x 5.6 x 1.8 inches
Manufacturer	OSD Audio
Maximum Output Power	100 watts
Model	SMP-100
Mounting Type	Freestanding
Number of Channels	1
Output Power	100 Watts
Package Type Name	Box" or "Retail Packaging
Part Number	SMP-100
Specification Met	Etl, Ce
UPC	819603019377
Unit Count	1.0 Count
Warranty Description	2-Year Warranty

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