Bose 901 Series IV Speaker Value Guide

The Bose 901 Series IV is a cornerstone of American audio history, produced between 1978 and 1983 to replicate the acoustics of a live concert hall. It is highly collectible for its innovative 'Direct/Reflecting' design, which utilizes nine full-range drivers to bounce sound off room surfaces.

What Is Bose 901 Series IV Speaker Worth?

The typical price range for Bose 901 Series IV Speaker is $350 - $450 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• Physical condition of the foam surrounds on all 18 drivers, as 'foam rot' is common and requires professional re-foaming.
• The inclusion and functional state of the matching Series IV active equalizer, which significantly impacts the resale price.
• Cosmetic integrity of the wood cabinetry, specifically looking for water rings, chips in the veneer, or sun fading.
• Presence of the original 'Tulip' pedestal stands, which are highly sought after by collectors and increase the total set value.

How to Identify Bose 901 Series IV Speaker?

• Verify the presence of the Series IV specific active equalizer, which is essential for the speakers to function with a flat frequency response.
• Check for the distinctive pentagonal cabinet shape featuring one front-facing driver and eight rear-facing drivers.
• Examine the rear terminal plate for the 'Series IV' designation and the 'Made in U.S.A.' manufacturing stamp.
• Inspect the wood veneer finish and the specific knit grille cloth used during the late 1970s and early 1980s production run.

History of Bose 901 Series IV Speaker

The Bose 901 speakers were first introduced in 1968, revolutionizing home audio with their unique 'Direct/Reflecting' design. The Series IV, produced in the late 1970s, continued this legacy, aiming to replicate the experience of a live performance by bouncing most sound off walls and other surfaces.