90's Ovation Celebrity CS 153 (nylon model) help please!

Svyatoslav K Posted 2014-08-10 7:44 AM (#491244) Subject: 90's Ovation Celebrity CS 153 (nylon model) help please! Joined: August 2014 Posts: 1 Hello dear Ovation fans! I have this guitar since 90's and it's beautiful Korean made instrument. However I don't use it and don't know much about it except it's a classical type guitar. It has wide fretboard at nut, no radius (flat frets) and nylon strings. Also it has piezo pickup and OP-24+ preamp with eq. The guitar definitely has truss rod, but main question is it adjustable type or not? And what type / size of truss rod wrench do I need for this guitar? Please look at photos and serial number: http://s1290.photobucket.com/user/s_kiselev/library/?sort=3&page=1 Thank you! MWoody Posted 2014-08-10 11:33 AM (#491248 - in reply to #491244) Subject: Re: 90's Ovation Celebrity CS 153 (nylon model) help please! Joined: December 2003 Posts: 13987 Location: Upper Left USA Welcome! I believe the Truss rod adjustment is inside the sound hole and just under the fret board. A 3/16" Allan head should do.