Hertz UNO S 300 S4


Installation Locations and Charges: *

Optional installation service available at various locations in Singapore.
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Product Description

The 30 cm (12’) S 300 S4 car audio subwoofer, designed to obtain powerful deep bass in any installation, is the last addition to the Uno product range.

Thanks to the efficiency of 89.5 dB, achieved using lightweight materials such as paper for the cone and high density foam for the suspension, the component provides the ability to easily reach high sound pressures in the car compartment.

The exclusive patented V-cone system ensures maximum stiffness through wide excursions, thus obtaining low undistorted frequencies at high volume.

The S 300 S4 is optimized for both reflex and sealed enclosures. The resonance frequency is as low as 33 Hz, a particularly low value considering the speaker’s high efficiency. This figure proves the degree of commitment of the Hertz R&D team to the project, aiming at maximizing the output quality and level. A pre-assembled gasket in ABS refines the product’s cosmetics ensuring an appealing look once installed.

Size mm (in.)

  • 300 (12)

Power Handling – Peak W

  • 1000

Power Handling – Continuous W

  • 250

Impedance Ω

  • 4

Sensitivity dB SPL

  • 89,5

Voice coil Ø mm (in.)

  • 38 (1.5)

Xmax mm

  • 9,1

X-mech mm (in.)

  • ±15,1 (0.59)

Re Ω

  • 3,6

Fs Hz

  • 33

Vas l

  • 82,2


  • 0,6


  • 0,65


  • 7,8

Spl dB

  • 89,5
Action Auto Pte Ltd
24 Boon Lay Way #01-68
Trade Hub 21
Singapore 609969
Tel: 66862909
ACE 1 Auto Accessories Pte Ltd
5 Kaki Bukit Road 1 #03-05
Eunos Technolink
Singapore 415936
Tel: 61008800
Audio Solution Pte Ltd
81 Ubi Avenue 4 #01-10
UB. One
Singapore 408830
Tel: 64440123 / 81388731
Mods Ministry
50 Serangoon North Avenue 4 #01-27
First Centre
Singapore 555856
Tel: 98447828
Designer ICE Enterprise LLP
50 Bukit Batok Street 23 #02-21
Midview Building
Singapore 659578
Tel: 64251220
Foon Audio Garage
25 Kaki Bukit Road 4 #01-53
Synergy @ KB
Singapore 417800
Tel: 68412773 / 90299219
Wee Heng Auto Air-con Accessories
460 Upper Serangoon Road
Singapore 534493
Tel: 62816739 / 62830300

By accepting to use the installation service, you agree to the following terms and condition;

  • Installation service available for Singapore only.
  • Price of installation stated for one item only except for items in the promotion page or otherwise mentioned.
  • Installation arrangement is confirmed only after a call back arrangement is made.
  • Refer to the list of locations the installation is available under the “Authorised Dealers Adress” tab on every product page.