Polk Audio Monitor Series 4 Bookshelf Speakers which feature Polk Audio M4 Woofer which were produced in 1989 The Speakers work great and sound fantastic, very loud for their size. The Speakers stand 14 Inches, which is two inches taller than the average bookshelf speaker One of the front grills has all its pegs broken so it wont stay on. Price$60 FIRM! Cash Only. Calls Only. No Shipping. I started picking up speakers during the late 1970's and Polk are in my humble opinion some of the best, the M4 Woofer is outstanding, these are very good bookshelf speakers, if you dont mind the grills not staying on. My Dad recently passed and I might move back to Ohio is the reason for selling. CALLS ONLY! CASH ONLY!! NO TEXTS!! LANDLINE!!