Speaker Plan No.1866 --- Markaudio CHR120

By purchasing these plans you will automatically receive the required drawings to construct Speaker System No.1866. 

• 6.5" Markaudio CHR120 fullrange driver 
• 40Hz tuning frequency 
• 28L cabinet 
• 85dB Sensitivity @1w (anechoic) expect 88dB in-room (aprox.)
• 18mm plywood construction (can easily be adjusted for other thicknesses) 
• Solid walnut or other hardwood front baffle suggested (optional) 
• Removable front baffle design with four wood screws 
• x2 flared 50mm rear ports 
• Fully tested with critical listening in stereo pair 
• Full test data found at my blog here
• Elegant support stand drawings using traditional joinery 
• Detail drawings for each piece 
• Easy to follow instructions 
• Electrical schematic for passive contour circuit and baffle step compensation
• Consists of two inductors and two resistors 

Sound Characteristics 

• Coherent sound source 
• Great bass quality, tuneful and not bloated 
• Strong vocal presence 
• Great soundstage depth 
• Great upper treble clarity 
• Narrower listening window in upper treble requires dedicated listening position