would this unit require an additional crossover for some one building a sub?

No, this work perfect for Sub with only direct signal from mixer. This have filters and frequency variant in the controls. It's a excelent product for subs

What’s it mean when the green power light flickers Red.?

That means you are driving the amp beyond its limits and driving it into clipping which may damage the amp as well as the driver.

Would a lower impedance sub like a jl audio 8w77 @3ohms work with this amplifier?

It is not recommended to use any driver with an impedance under four ohms.

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Dayton Audio SPA500 500W Subwoofer Plate Amplifier

Product ID: 5404630

Details

Brand
Dayton Audio
Item dimensions L x W x H
5.24 x 11.94 x
Manufacturer
Dayton Audio
Mounting Type
Clip On
Voltage
5 volts

⚡500W Class-AB power output

🔄Patented tracking downconverter for efficiency

🔊Low frequency parametric EQ

AR$1872684

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Description

🎵 Own the Room with 500W of Pure Bass Power!

TAILOR YOUR BASS - Low frequency parametric EQ lets you sculpt your subwoofer’s sound to fit your unique space and vibe.
TOROIDAL TRANSFORMER TECH - Premium toroidal power supply transformer ensures stable, noise-free power for flawless audio fidelity.
EFFICIENCY MEETS INNOVATION - Patented tracking downconverter power supply maximizes energy use, keeping your setup green and mean.
PURE POWER ZERO DISTORTION - High power Class-AB output delivers clean, controlled bass that commands attention.
BUILT TO PROTECT DESIGNED TO PERFORM - Advanced soft clip circuitry safeguards your woofers while expanding headroom for those deep drops.

The Dayton Audio SPA500 is a 500W Class-AB subwoofer plate amplifier featuring a patented tracking downconverter for high efficiency, a toroidal power transformer for stable power delivery, and a low frequency parametric EQ for customizable sound. Its advanced soft clip circuitry protects your speakers while enhancing performance, making it a top choice for audiophiles seeking powerful, clean bass.

Specifications

ASIN	B0048FHWL8
Best Sellers Rank	#253,871 in Electronics ( See Top 100 in Electronics ) #1,126 in Audio & Video Distribution Wall Plates
Brand Name	Dayton Audio
Customer Reviews	4.0 4.0 out of 5 stars (43)
Global Trade Identification Number	00844632015922
Item Dimensions	5.24 x 11.94 x 11.94 inches
Manufacturer	Dayton Audio
Material Type	Hercules
Model	SPA500
Mounting Type	Clip On
Number of Channels	1
Number of Items	1
Output Power	273 watts
Package Type Name	Box
Part Number	300-807
Specification Met	FCC
Supply Current	4.7 A
UPC	844632015922
Voltage	5 volts

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AR$1872684

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered 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 Argentina.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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1 month ago

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