Hertz SX 690 NEO.1 SPL Show 6x9 3-Way Coaxial Speakers

• Overview and best-use scenarios

• Key specifications

• Fitment and installation notes

• What’s included in the box

• FAQs
  
  

  If you’re choosing a 6x9 speaker because you need high output with controlled clarity, the Hertz SX 690 NEO.1 is built for that job. It pairs a weather-treated pressed-paper cone with a compact neodymium motor for strong efficiency and easy fitment in tight spaces. Up top, the high frequencies are handled by dedicated dome drivers so vocals and lead instruments stay crisp when the volume climbs.

  This model is a smart pick for high-energy systems in cars, trucks, and powersports builds where durability matters. The mounting depth is 85 mm (3.35")—a key number for bag lids, rear decks, and door installations where clearance is limited. It’s a 4-ohm design rated at 130 W continuous power handling with a published frequency response of 65 Hz–24 kHz and 94 dB sensitivity, so it can get loud without requiring excessive amplifier power.

  To make setup simpler and cleaner-looking, the package includes the MPG 690 grille. For best results, install with solid mounting, proper polarity, and clean amplification; if you’re pushing output hard, consider an appropriate high-pass filter and system tuning to protect midbass from extreme low bass.
  
  

• 3-way 6x9 coaxial design built for high output and controlled detail
• 130 W continuous / 260 W peak power handling, 4-ohm load
• 65 Hz–24 kHz response and 94 dB sensitivity for strong volume potential
• Compact neodymium motor + weather-treated cone for demanding installs
• Includes MPG 690 grille for protection and a finished look
  
  

  
  Does the SX 690 NEO.1 include grilles?
  Yes—official documentation describes the MPG 690 grille as provided with the SX 690 NEO.1 package.  

  What is the mounting depth? Will it fit my install location?
  The official physical spec lists D = 85 mm (3.35"). Always confirm you have at least that much clearance plus room for wiring and any adapter rings. Some retailers round this to about 3‑3/8" (3.375"), but the 85 mm number is the canonical reference. 

  Is this more SPL-focused or “sound quality” focused?
  This product line is positioned around high output (“SPL Show”), so it’s generally chosen when loud, clean playback is a priority. If you want a warmer, more audiophile-tuned presentation at moderate volume, you may prefer a different line. 

  What amplifier power should I pair with it?
  Use clean amplification that matches your system goals, and avoid clipping. The speaker is rated at 130 W continuous and 4 ohms; wiring, installation rigidity, and tuning matter as much as wattage. 
  
  Our suggested amplifier - Click here

  Should I use a crossover/high-pass filter?
  If you run high volume or power, a high-pass filter can reduce stress from very low bass that these speakers aren’t designed to reproduce at subwoofer levels. Exact cutoff depends on your vehicle, enclosure effects, and whether you have a subwoofer. 
  
  Technical Specs
  
  

  Component	SPL COAXIAL
  Size mm (in.)	in. 6 x 9
  Power Handling - Continuous W	130
  Power Handling - Peak W	260
  Impedance Ohm	4
  Tweeter diaphragm mm (in.)	29 (1.14)
  Woofer Voice Coil Ø mm (in.)	38 (1.5)
  Tweeter Voice Coil Ø mm (in.)	25 (1)
  Frequency Response Hz	65 ÷ 24k
  Woofer Magnet size D x d x h mm (in.)	110 x 45 x 20 (4.33 x 1.77 x 0.79)
  Tweeter Magnet size D x h mm (in.)	24,5 x 6 x 3,5 (0.96 x 0.24 x 0.14)
  Weight of one speaker kg (lb.)	1,69 (3.73)
  Woofer Magnet	Special Neodymium N38 H
  Tweeter Magnet	Special Neodymium N38 H
  Cone	Water repellent pressed paper
  Dome	Tetolon

  
  Electro-acoustic Specs
  
  
  

  D mm	169
  Xmax mm	5,5
  Re Ohm	3
  Fs Hz	65
  Le mH	0,4
  Vas I	11,29
  Mms g	36,1
  Cms mm/N	0,16
  BL T*m	7,665
  Qts	0,62
  Qes	0,78
  Qms	2,9
  Spl dB	94