Kicker ST-Series 1.5" 50W RMS 4 Ohm Aluminum Dome Bullet Tweeter KI-49ST4TW

• Recommended Amp Power [watts RMS] 15-50
• Impedance [Ohms] 4
• Mounting Depth 1-1/4 inches
• Mounting Diameter 2-7/8 inches
• Product Dimensions:

This Listing Includes:

(1) Kicker ST-Series 1.5" 50W RMS 4 Ohm Aluminum Dome Bullet Tweeter KI-49ST4TW and installation hardware

Product Features:

• Extremely efficient, horn-loaded aluminum diaphragm for extreme output


• Single-unit, PA-style tweeter perfect for competition-level SPL systems


• Voiced for clear vocals to match with high-output bass


• Includes front or rear mount options, in addition to trim bezel options


• Spring-loaded terminals accept 16 AWG wire


• In-line 6dB crossover


• Field-replaceable voice-coil assembly available (ST3RK/ST4RK)

Product Specifications:

Single Tweeter                                                   1.5 Inches

Dome Material                                                   aluminum

Design                                                                 bullet

Impedance [Ohms]                                           4

Recommended Amp Power [watts RMS]     15-50

Peak Power Handling [watts]                         100

Frequency Response [Hz]                               3k-20k

Sensitivity [1W, 1m]                                         108

In-Line Crossover [dB]                                     6, high-pass

Mounting Depth                                               1-1/4 inches

Mounting Diameter                                         2-7/8 inches

Thread Length                                                 1-3/16 inches

Thread Diameter                                             1-7/8 inches

What's in the box?

1 - Tweeter

1 - Round Mounting Flange

1 - Backing Nut

1 - Square Mounting Flange

4 - Mounting Screws

1 - Capacitor

1 - Resistor

Accepted Payment Methods at Big Jeff Audio

At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:

Credit and Debit Cards

• Visa
• Mastercard
• American Express
• Discover
• Diners Club

Digital Wallets

• Amazon Pay
• Apple Pay
• Meta Pay (formerly Facebook Pay)
• Google Pay
• Shop Pay
• PayPal

International Payment Methods

• Bancontact
• iDEAL

Bank Transfers

• Zelle

Financing Options

We also offer financing options to make purchasing easier. Learn more about our financing options here.

• Klarna
• Affirm
• Sezzle
• Snap
• Acima
• Tiptop

If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.

Shipping Options and Delivery Time

Do You Offer Expedited Shipping?

Yes! At checkout, you can select from different shipping options:

• Standard Shipping: Free for orders over $100.
• Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.

How Long Does Delivery Take?

• Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
• Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.

What Happens If My Package Is Undeliverable?

If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.

Why Can’t I Track My Order?

If you're having trouble tracking your order:

• Make sure you’ve received the shipping confirmation email with the tracking number.
• Log into your account on our website and use the “Check Your Order Status” button.
• If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.