100 Watt Public Address with Sirens


33 reviews

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Almost as popular as our train horn kits, our 100 Watt Public Address with Siren is a great accessory for any vehicle and a fantastic complement for any of our horn kits. Make sure you are heard loud and clear with 100 Watts of power blasting your voice or waking the neighborhood with the built-in selection of popular sirens. If that wasn’t obnoxious enough, hook it up to the built-in auxiliary cord to ensure everyone can hear your favorite Taylor Swift song whether they want to or not!  

Our 100 Watt Public Address with Siren is intended for offroad use only. DO NOT use this product to impersonate law enforcement, or other government agency, vehicle, person, or device. HornBlasters, Inc. holds no responsibility for your actions, nor the consequences of your actions when using this product.


Here's a customer video showing off the sirens and public address. The video was taken from about 20ft away.

  • 100 Watts of Powerful Performance!
  • Now Features a New Auxillary Port 
  • Wail, Yelp, Hi-Lo Sirens
  • Horns & Public Address
  • HornBlasters 100 Watt Public Address
  • HornBlasters 100 Watt Speaker
  • Detailed Instructions
  • Mounting Bracket & Hardware
  • Wiring Harness
  • Part: HornBlasters 100 Watt Public Address
  • Part Number: PA-100H
  • Power Consumption: 100 Watts
  • Speaker Amperage: 8 ohms
  • Amplifier Length: 7.50 inch (190.5 mm)
  • Amplifier Width: 6.00 inch (152.4 mm)
  • Amplifier Height: 2.25 inch (57.2 mm)
  • Amplifier Weight: 3.680 lb (1.67 Kg)
  • Speaker Length: 5.25 inch (133.4 mm)
  • Speaker Width: 5.25 inch (133.4 mm)
  • Speaker Height: 2.25 inch (57.2 mm)
  • Speaker Weight: 5.790 lb (2.63 Kg)
  • Money-Back Guarantee/Refund Policy
    All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform HornBlasters.com of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
  • Warranty
    This product is backed by our One-Year Manufacturer's Defect Warranty!
  • HornBlasters.com Satisfaction Guarantee
    HornBlasters.com offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
  • Cross-Shipments
    HornBlasters.com will not cross-ship returned merchandise.
  • Physical Damage Policy
    Physical damage to any product purchased at HornBlasters.com will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.

Warnings & Notices

Hearing Loss warning icon
Hearing Protection Required

This product produces extreme loudness. Proper hearing protection must be worn at all times during its operation. Hearing loss or permanent damage may result from unsafe use. Use this product in a safe and responsible manner and at a distance of at least 100 meters from others. Never operate this product in a closed environment, in close proximity to living beings, or where prohibited by law.

Safety warning icon

This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Customer Reviews

5.0 Based on 33 Reviews
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Davis W.
United States United States


I've had this unit for about 7 years now. It's great. I love the adjustable volume on the sirens and PA sound- you can go quiet...or really LOUD. The "air horn" sound is very distinctive and sounds just like an emergency vehicle. Here in CA, the "air horn" sound counts as a horn and is perfectly legal to use. (The siren sounds are a different story...). The speaker that came with it is not too durable and conked out in the second year (to be expected at this price)- but the unit is perfectly capable to controlling any other 100W speaker. I replaced it with an (expensive) Whelen 100W speaker and it's been great for the past 5 years! Awesome product.

Davis W.
United States United States

The best purchase I’ve ever made

The best purchase I’ve ever made. These things haven’t gotten me in trouble yet but they might. If they do it will be well worth the trouble I get in it is a crazy amount of fun to be able to talk through a PA system on my truck. whether I’m going through the grocery store parking lot and telling the older gentleman that he can cross or asking the person riding in my blind spot “ Do they always ride in peoples blind spots “. I love it. Best purchase on my 2019 F150 to date . Not to mention it something breaks on your purchases and it’s a replacement part away from working. Horn blasters team will send you the piece ASAP. I’ve also got the air horns set up. I’m 1 happy customer

HornBlasters 100 Watt Public Address with Sirens Review
Brent H.
United States United States

Well worth the money

I was like the average person reading these reviews. Wondering what all I can do with it. So far its been flawless. Very loud. Can even hook your phone up to the aux and play music. I can even play horn loops from other websites and make my own horn to play from my phone. Sirens are pretty loud and are perfect for car shows. The microphone is really nice and clean. Installed it in 30 mins. Pretty easy to install. Has 2 switch wires. 1 I use for an amp remote turn on. The other I will be using for my headlight turn on switch. Perfect for all of my needs. So what are you waiting for? You need this.

Sean K.
United States United States

Excellent product! As loud as you think it should be.

Dustin R.
United States United States

Have a blast with their horn

Great product and service