STEG SQL650C

The STEG SQL650C is a high-quality 2-way component system designed for demanding car audio applications, combining dynamic sound reproduction with high detail and a balanced frequency response. With its 165 mm full-range midrange drivers and 25 mm fabric-dome tweeters, the system is ideal for upgrading the sound quality of existing car speakers.

The low-midrange drivers feature a coated paper cone that delivers a natural sound with precise reproduction in the midrange. Twisted pole plates, a pole piece bore, and a vented sheet-steel basket support controlled cone movement and heat dissipation from the driver system.

The 25 mm fabric tweeters ensure clear and finely detailed high-frequency reproduction. Thanks to the included surface-mount and in-dash enclosures, they can be flexibly positioned within the vehicle. The passive 12 dB/octave cable crossovers enable precise control of the tweeters and offer level adjustment for customized sound tuning.

With an RMS power handling capacity of 80 watts and its well-engineered design, the STEG SQL650C offers an impressive combination of sound quality, dynamics, and practicality for everyday use.

Technical Specifications

General Information

• Manufacturer: STEG

• Model: SQL650C

• Speaker Type: 2-way component system

• Speaker size: 165 mm (6.5 inches)

• RMS Power Handling: 80 watts

• Rated impedance: 4 ohms (system specification)

• Frequency range: approx. 60–20,000 Hz

• Type: Passive speaker system
  
  

Low-midrange driver

• Diameter: 165 mm

• Diaphragm material: Coated paper diaphragm

• Speaker basket: Ventilated sheet steel basket

• Magnet system: Ferrite magnet

• Pole Plates: Precision-Turned

• Core: With ventilation hole

• Resonance frequency (Fs): 53 Hz

• Overall Quality (Qts): 0.56

• DC resistance (Re): 3.0 ohms

• Sound pressure level (SPL): 91.5 dB at 2.83 V

• Installation depth: 68 mm

• Speaker grilles: Not included
  
  

Tweeter

• Tweeter type: Fabric dome tweeter

• Diameter: 25 mm

• Resonance frequency (Fs): 1,270 Hz

• Sound Reproduction: High-resolution high-frequency range

• Installation: Surface-Mount and Flush-Mount Enclosures

• Connection: Via a passive cable splitter
  
  

Crossover Networks

• Design: Passive crossover networks for the tweeters

• Filter slope: 12 dB/octave

• Tweeter Level Adjustment: 0 dB / -3 dB

• Connection Type: Cable Splitter

• Function: High-pass filtering and level adjustment of the tweeters
  
  

What's Included

• 2 × STEG SQL650C low-midrange drivers (165 mm)

• 2 × STEG fabric dome tweeters (25 mm)

• 2 × Passive High-Frequency Cable Crossovers

• 2 × Surface-Mount Enclosures for Tweeters

• 2 × Mounting housings for tweeters