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 SMP-100 100W Mono-Channel Class D Subwoofer Amplifier

OSD Audio SMP-100 100W Mono-Channel Class D Subwoofer Amplifier

Product ID: 594860150

Details

Brand
OSD Audio
Item dimensions L x W x H
12.1 x 14.2 x
Manufacturer
OSD Audio
Mounting type
Freestanding
Number of channels
1

⚡100W Class D power

❄️Runs cool under load

🎚️Adjustable low-pass filter

Description

🎵 Tiny Amp, Tremendous Bass — Feel Every Beat!

COMPACT POWERHOUSE - Delivers a mighty 100W output in a sleek, space-saving design under 6 inches wide.
SMART AUTO STANDBY - Automatically powers down after 15 minutes of inactivity, saving energy without lifting a finger.
COOL EFFICIENT TECH - Class D amplifier technology ensures high efficiency with minimal heat, perfect for all-day use.
PRECISION BASS CONTROL - Front-panel adjustable low-pass filter, phase, and volume knobs let you tailor deep bass exactly to your room.
VERSATILE CONNECTIVITY - Supports both RCA and speaker-level inputs, powering subwoofers and in-ceiling speakers seamlessly.

The OSD Audio SMP-100 is a compact yet powerful 100W Class D subwoofer amplifier designed for home theaters and whole-house audio systems. Featuring adjustable low-pass filtering, phase, and volume controls on the front panel, it delivers distortion-free, room-shaking bass while running cool and efficient. With versatile input options and smart auto-standby, it’s the perfect upgrade for millennials seeking premium sound without bulk or hassle.

Specifications

ASIN	B07HJDQ8Q3
Brand Name	OSD Audio
Customer Reviews	4.0 4.0 out of 5 stars (168)
Included Components	1 x OSD Audio SMP-100 100W Mono-Channel Class D Subwoofer Amplifier
Item Dimensions	12.1 x 14.2 x 4.6 centimeters
Item Type Name	Subwoofer Amplifier
Item Weight	794 g
Manufacturer	OSD Audio
Material Type	Plastic or Lightweight Metal
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

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