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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

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 clean power output

🔄patented tracking downconverter

🔊custom low-frequency EQ

4747 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered 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 Romania.

Secure transaction

Description

🔊 Unleash the bass that commands the room — power, precision, and protection in one sleek amp!

TAILOR YOUR BASS - Low frequency parametric EQ lets you boost or cut frequencies to perfectly match your room and taste.
PROTECT YOUR INVESTMENT - Advanced soft clip circuitry expands headroom and safeguards your subwoofer from damage.
TOROIDAL TRANSFORMER TECH - Premium toroidal power supply ensures stable, noise-free performance for deep, rich lows.
EFFICIENCY MEETS INNOVATION - Patented tracking downconverter power supply maximizes energy use, keeping your system cool and green.
PURE POWER ZERO DISTORTION - High power Class-AB output stage delivers crystal-clear, controlled bass without muddiness.

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 shaping. Its advanced soft clip circuitry enhances headroom and protects your subwoofer, making it a top-tier choice for audiophiles seeking powerful, clean bass performance.

Specifications

ASIN	B0048FHWL8
Best Sellers Rank	#298,035 in Electronics ( See Top 100 in Electronics ) #1,351 in Audio & Video Distribution Wall Plates
Brand Name	Dayton Audio
Customer Reviews	4.3 4.3 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
Output Power	273 Watts
Package Type Name	Box
Part Number	300-807
Specification Met	FCC
Supply Current	4.7 Amps
UPC	844632015922
Voltage	5 Volts

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

4747 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered 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 Romania.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

View all Trustpilot reviews