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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SMP500 Mono-Channel Class D Subwoofer Amplifier with Onboard DSP 400W 4 -8 Ohm

SMP500 Mono-Channel Class D Subwoofer Amplifier with Onboard DSP 400W 4 -8 Ohm

Product ID: 366155618

Details

Item dimensions L x W x H
38.1 x 12.7 x
Voltage
220 Volts
Manufacturer
OSD Audio
Maximum Supply Voltage
2.2E+2 Volts
Mounting Type
Surface Mount

⚡400W RMS Power

🔄Auto On/Off Sensing

🎚️Variable High-Cut Filter

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€ 3283.58

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎬 Feel the Power, Hear the Depth — Elevate Your Home Theater Bass Game!

SMART EFFICIENCY - Class D technology ensures cool operation and high efficiency, perfect for marathon movie nights without overheating.
TAILORED BASS PRECISION - Variable high-cut filter and front panel knob let you sculpt bass response for crystal-clear lows and cleaner mids.
POWER THAT PACKS A PUNCH - Delivers a robust 400W RMS with 1000W peak power to drive your passive subwoofers with authority.
READY FOR THE RACK REMOTE - Sleek rack-mountable design with included remote control and auto-sensing power for effortless setup and use.
SEAMLESS SYSTEM INTEGRATION - Low and high-level pass-through inputs/outputs plus multiple turn-on modes for ultimate compatibility and control.

The OSD Audio SMP500DSP is a mono-channel Class D subwoofer amplifier delivering 400W RMS at 4 ohms with a 1000W peak, designed for high-wattage passive subwoofers. Featuring a variable high-cut filter, auto on/off sensing, and both low/high-level pass-through inputs/outputs, it enhances bass precision and overall surround sound clarity. Its efficient Class D design runs cool under load, while rack-mountable form factor and included remote make it a professional-grade addition to any home theater or media room setup.

Specifications

ASIN	B07F94FSLF
Brand Name	OSD Audio
Customer Reviews	4.1 out of 5 stars 125 Reviews
Included Components	1
Item Dimensions	38.1 x 12.7 x 15.2 Centimeters
Item Type Name	Subwoofer Amplifier
Item Weight	3.63 kg
Item dimensions L x W x H	38.1 x 12.7 x 15.2 Centimeters
Manufacturer	OSD Audio
Material Type	Metal
Maximum Supply Voltage	220 Volts
Minimum Supply Voltage	110 Volts
Model Number	SMP500DSP
Mounting Type	Surface Mount
Number of Channels	1
Output Power	400 Watts
Package Type Name	cardboard box
Specification Met	ce,etl
UPC	819603013177
Voltage	220 Volts
Warranty Description	2-Year Warranty

Reviews

R**L

Excellent Quality at a Low Price

14.01.2020

A**R

It's good, but... No, it's bad.

17.12.2025

I**N

Good Enough Amp for 70v Commercial.

21.07.2022

S**N

Great little subwoofer amp, but FFS the speaker terminals should be banana jacks

10.04.2020

A**R

Does good

7.10.2023

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