MTX RTX4BTs picture

RTX654

RTX 16,5cm 6.5” 4Ω 125W RMS High Efficiency Midrange

Introduction

The MTX TR40C coaxial speakers shine with their sound quality, very high power handling and exceptional finish. It is advisable to use the TR40C with a small amplified subwoofer such as the MTX TRT8p, RTT8P, TRP8, RTP8 or RTF10P to reinforce the low frequencies.
The quality of a loudspeaker depends 2/3 on the quality of the assembly. It is necessary to perfectly seal and stiffen the support with the speaker and the door.
To enjoy all the sound quality, it is strongly recommended to use an external amplifier such as the TR275, TX2275 or the TR450, TX2450 whose power and musicality transfigure the music.

Features

  • Exceptional sound quality with an incredible musicality
  • 38mm 1.5” giant voice coil for more power handling
  • 115mm extra large strontium magnet for a better cone control and more power handling
  • Compressed paper cone for more efficiency, softness and high quality sound
  • Treated Cloth edge suspension for a better efficiency
  • Highly detailed midrange Good bass response
  • Easy to install - Fits into the original 16,5cm 6.5” cut outs (Ø145mm)
  • Sold by piece - You need two RTX654 for a stereo system
  • Design to play with MTX RTX2BTs or RTX4BTs tweeters
  • Design to play with MTX TR275 TX2275 TR450 TX2450 TX480D RFL4120 RFM5300 amplifiers

Specifications

  • High efficiency midrange
  • Diameter: 16,5cm 6.5”
  • Peak Power: 500W
  • RMS Power: 125W
  • Sensitivity: 97,2dB/2,83v/1m
  • Impedance: 4Ω
  • Freq. response: 150Hz - 10000Hz
  • Mounting Depth: 56,6mm
  • Recommended x-over: >150Hz
  • Fs: 145Hz

Parameters

  • Re : 3,04Ω
  • Le : 0,205mH
  • L2 : 0,238mH
  • R2 : 2,03Ω
  • Cmes : 315,77μF
  • Res : 54,31Ω
  • Fs : 145,3Hz
  • Mms : 11,501g
  • Mmd : 9,773g
  • Rms : 0,671 Kg/s
  • Cms : 0,104mm/N
  • Kms : 9,58N/mm
  • Bl : 6,035N/A
  • Qms : 15,652
  • Qes : 0,875
  • Qts : 0,829
  • Vas : 2,6027 liters
  • Sd : 132,73cm2
  • Lnom : 97,2/2,83V/1m

Recommended efficient associations

Designed to play with RTX2BTs or RTX4BTs midranges

MTX TX2450 picture

Recommended amplifiers: MTX TR275 TX2275 TR450 TX2450 TX480D RFL4120 RFM5300

MTX TX2450 picture

Warning

MTX wants you to enjoy your hearing for a long time. Excessive exposure to loud volumes can damage your hearing. The United States Department of Labor recommends not exceeding the following recommendations:
90db : maximum 8 hours / day
92dB : maximum 6 hours / day
95db : maximum 4 hours / day
97db : maximum 3 hours / day
100db : maximum 2 hours / day
102db : maximum 90 minutes / day
105db : maximum 60 minutes / day
110db : maximum 30 minutes / day
115db : maximum less than 15 minutes / day
120db : immediate danger, 0 minutes / day

Dimensions

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