SuperTweeter with Cotton filling. Can go up to 40KHz 

Filled with wool sheet  

Packs of pure wool & sand to be put inside 

Close up view 

Open the driver and remove facotry damping material 

Side View of the DIY speaker 

Little tweak to reduce high frequency diffusion. 

Drinking Staws to reduce turblance from the speaker port 

Front view of the DIY speaker, 1 " dome tweeter, 2 x 5" mid-bass driver 

Modification of Super tweeter with Sprague & AudioNote audio caps. 

DIY Speaker 

Vintage McIntosh MC275 Power Amp. CE edition dated 1993 

My complete setup 

Vintage Audio Research SP15 pre-amplifier 

Specially made wooden spike to reduce vibration