1" Throat Twist on Slim Horn
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
DS18 PRO-HT1 PRO 4.5" Twist on Slim Horn
for Drivers with 1" Throat
DS18’s PRO-HT1 is the best way to boost the range, volume, and feel of the sound reproduced by your compression drivers!
The PRO-HT1’s high strength ABS plastic casing ensures this horn can withstand the most demanding applications.
The PRO-HT1 features a short throat with a 1" diameter, allowing for crazy loud sound from your drivers. The circular profile and 110-degree coverage make this horn perfect for those looking to create a directional sound that will blow the competition away.
The twist-on installation method and standard driver thread pitch ensures that this horn is easy to install and can be securely attached to your driver in no time.
(PRO-DR250 and PRO-DRNSC Recommended)
So if you're looking to boost your drivers directional sound for unmatched performance, look no further than the DS18 PRO-HT1!
Highlights
- Twist On Design for Easy Driver Installation
- 1.77” Mounting Depth / 3.25” Mounting Cutout Diameter / 4.5” Diameter
- ABS/PC Injected Plastic For Increased Durability
Great For
- Car Audio
- Pro Audio





Technical Details
| SPECIFICATIONS | |
| Nominal Diameter | 4.5" / 115mm |
| Throat Diameter | 1" / 25.4mm |
| Installation Type | Twist |
| Sound Coverage | 45° Rounded |
| Low Frequency Limit | 1.3KHz |
| Body Material | ABS/PC Injected |
| Color | Black |
| Sold in Pair or Single | Single |
| MEASUREMENT | |
| Overall Diameter | 4.5" / 115mm |
| Overall Depth | 2" / 51mm |
| Mounting Depth | 1.77" / 45mm |
| Mounting Hole Diameter | 3.25" / 82.4mm |
| Bolt Pattern (Horn) | 4" / 104mm x 4 - 0.18" / 4.5mm |
| Bolt Pattern (Driver) | M1-3/8" |
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.