Description

Hertz ML 1650.3

Features & specs

Boundary Free Surround: higher cone surface area technology- allowing the ability to move more air. Thermal and mechanical linearity is assured due to the surrounds fabricated with butyl rubber.

Klippel Verified: The Klippel distortion analyzer, a device that uses a laser and computer software to do a large-scale analysis of drivers in motion. The KDA helps Hertz optimize the speaker’s motor composition, voice coil alignment, and suspension to yield the stablest possible execution.

Tweeter Mounting: The ML 280.3 tweeters are designed to flush mount using the included clamps. They can also be mounted to many factory tweeter brackets using the M3 threaded insert on the back of the tweeter housing.

Tweeter Dimensions:

Crossover Settings:

• Tweeter Level: 3-position switch on each crossover; set the output level of the tweeter to -2 dB, 0 dB, or +2 dB; Hertz recommends 0 dB when the tweeters are mounted off-axis (relative to the listeners) and -2 dB when the tweeters are mounted on-axis
• Bi-amp Inputs: each crossover has bi-amp inputs, separate inputs for the woofer and tweeter; set the switch to On when using the bi-amp inputs
• Mid Contour: On/Off; low-pass crossover point set to 2.5 kHz (On) or 3.5 kHz (Off); 6 dB/octave in both positions; in most installations Hertz recommends the 3.5 kHz (Off) setting
• Hi-Contour: On/Off; high-pass crossover point set to 2.5 kHz (On) or 3.5 kHz (Off); 12 dB/octave in both positions; in most installations, Hertz recommends the 3.5 kHz (Off) setting
• Hi-Boost: On/Off; leave off if tweeters are mounted on-axis (relative to the listeners); turn on if tweeters are mounted off-axis; improves the linearity of the frequencies above 10 kHz when the tweeter is mounted off-axis

Wiring: The crossover inputs and outputs are set screw terminals; they will accept bare wire up to 8 gauge.

Crossover Dimensions:

• Width: 7.1″
• Height: 1.6″
• Depth: 4.71″

Mighty tools for ideal quality

Hertz designed their MLK 1650.3 6-1/2″ component speaker system for wielding up to 150 watts RMS.

Premium components

MLCX 2 TW.3 crossover system is capable of bi-amplification, tweeter level adjustment, off-axis improvement, and a selection of crossover point adjustment tools. The premium components of this crossover system contribute to the woofer’s impressive low-frequency response and to a smooth change to the extended frequency range of the low-distortion Tetolon dome tweeter.

A solid, smart foundation for an effective performance from the 6-1/2″ woofer is equipped with an aluminum alloy speaker basket with built-in venting. The woofer’s V-cone design enhances diffusion and supports lows you can sense.

The Hertz View

finally, the Hertz MLK 1650.3 6-1/2″ component speaker system is the perfect speaker system for the on-the-go music lover!

Product Highlights:

• the component system includes 2 woofers, 2 tweeters, and 2 external crossovers
• 6-1/2″ pressed pulp/cotton fiber woofer
  • Boundary Free rubber surround
  • aluminum alloy basket
• 1-7/16″ Tetolon dome tweeter
• compact MLCX 2 TW.3 outboard crossover
  • 2-position “Mid-Contour” switch for mid-bass adjustment
  • 2-position “Hi-Contour” switch for high pass crossover point setting
  • “Hi-Boost” for off-axis tweeter positioning
  • 3-position attenuation switch for tweeter
• frequency range: 40-28,000 Hz
• handles up to 150 watts RMS (300 watts peak power)
• sensitivity: 92 dB
• woofer top-mount depth: 2-3/4″
• grilles included
• warranty: 2 years
• MFR # MLK 1650.3

What’s in the Box:

• Two ML 1650.3 Woofers
• Two ML 280.3 Dome tweeters (with attached 10″ length of speaker wire)
• Two MLCX 2 TW.3 Crossover networks
• 2 Tweeter flush mount cups (installed)
• Flush mount clamps
• Grilles (installed)
• Woofer grilles
• Sixteen 1″ Allen head screws (3mm)
• 16 Speed clips
• Two M3 x 12mm Machine screws (2.5mm Allen head)
• Two M3 x 8mm Machine screws (2.5mm Allen head/installed in tweeter housing)
• 3mm Allen head bit
• 2 Flat washers
• Owner’s manual (English/ Spanish/ French/ German/ Italian/ Portuguese/ 21 Others)

Overview

1. Neodymium magnet optimized with FEA simulations for real dynamics and utmost control.
2. Very low carbon content CNC machined plates, for maximum magnetic permeability and low distortion at high power levels.
3. Aluminium-covered pole for a linear impedance modulation and low distortion.
4. 36 mm CCAW double layer voice coil wound on a Polyamide former for exceptional power handling and compression-free reproduction even in the most demanding musical passages.
5. Exponential V-cone® with optimized geometry for utmost linearity and dispersion at mid-frequency range.
6. “Boundary Free” IIR rubber surround, for better efficiency and wider mid-bass frequency.
7. Pressed-pulp cone with cotton fibers, combining stiffness and lightweight, to achieve wide frequency response and limited break-ups at high frequency.
8. Three-spoke, very acoustically transparent anti-resonant aluminum alloy basket featuring built-in venting holes.
9. CNC machined elegant diamond-cut basket edge featuring the Hertz logo.
10. Die-cast aluminum factory-provided grille featuring diamond-cut aluminum Hertz logo.

 

Technologies

• 

  V-CONE®

  The exponential profile gets very close to the perfect one, providing exceptional dispersion.

• 

  BOUNDARY FREE SURROUND

  This technology provides the ability to achieve a wider emission surface of the cone compared to speakers with the same diameter; that way, the cone manages to move a bigger mass of air, so it produces more acoustic pressure. This special surround is built from highly pure IIR butyl rubber, ensuring extraordinary thermal and mechanical linearity.

Data table

Size mm (in.)	165 (6.5)
Power Handling – Peak W	250
Power Handling – Continuous W	125
Impedance Ω	4
Frequency response Hz	40 – 6.5k
Sensitivity dB SPL	93
Voice coil Ø mm (in.)	36 (1.4)
Magnet	Neodymium
Cone/Dome	Pressed-pulp cone with cotton fibers