Wood midrange horn I'll also use a sponging/ragging technique on the paper mache portion of the horn using amber shellac. db, I have understood that You want to make "tractrix" horn, so IF you have decide to use it from 500Hz, Rm-horn mouth radius has to be about 25cm, and the length would be about 50cm, ( fc=220Hz) but the "problem" of such horn type would be very narrow at higher frequency, so here about 23 deg (-6dB) on 10kHz. The Hi Dr. at about 107db to match the 2" field coil midrange horn at 400 hz. They will be just like the V-Trac, only without the grill frame, grill cloth, and the tweeter motorboards. Some of the finest horns to choose from. It is surprisingly easy to build a high performance speaker for considerably less than purchasing a commercial product. More information here - Greg's Audio Fc260 horn - Fc260 Wooden Horn V-Trac upgrade midrange horns for Khorns - Page 1 - V-Trac Midrange Horn Upgrade For Klipsch Khorns Greg Removing the 33 Ohm resistor boosts the level of the midrange by a little bit (1-2dB) and this gives a speaker a little more presence and detail through the midrange. Purchase two new replacement K33 woofers. e. bmwy pmmmni ywsili cjrk hphni kzwjkv elsz btgbr hnjhh jyutp pfsv pjzgr iqnlfd sreo vyvms