901 Series II Owner's Manual

Nov 4, 2026

Uploaded by Muffet

Owner’s manual for the BOSE 901 Series II Direct/Reflecting speaker system, describing unpacking, installation, speaker placement, and connectivity. It covers how the unique design with nine drivers and an Active Equalizer differs from conventional loudspeakers, and provides placement guidelines such as distances from walls, floor, ceiling, and side surfaces. The manual also outlines equalizer connection options and troubleshooting plus technical information, accessories, options, and a five-year warranty.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages16

Reading Time40 min

AccessFree to download

Introduction

Unpacking Your 901s

Installation of Your 901s

Speaker Placement

Connecting the Speakers

Selecting the Speaker Wire

Getting the Most Out of Your 901 Speakers

In Case of Difficulty

Technical Information

Accessories and Options

Five Year Warranty

# ◎WNER'S MANUALFOR901SERIESI DIRECT/REFLECTINGSPEAKER SYSTEM B0SE ## 901 SERIESⅡ OWNER'S MANUAL TABLE OF CONTENTS Page 1. Introduction………………………………………………………………………………………………………………………………3 11. Unpacking Your 901s ………………………………………………………………………………………………………3 I. Installation of Your 901s………………………………………………………………………………………………………3 A. Speaker Placement B. Connecting The Speakers 1. Selecting The Speaker Wire 2. Phasing Your 901 Speakers 3. Fusing Your 901 Speakers ## C. Connecting The Equalizer ### 1. Preferred Method (Using The Tape Monitor Circuit) ### 2. Alternate Method I (Using PRE-AMP OUT and MAIN IN Connections with Receiver or Integrated Amplifier) ### 3. Alternate Method Il (Using separate PREAMPLIFIER and POWER AMPLIFIER) ### 4. Alternate Method III (Using FOUR·CHANNEL DECODER) D. Connecting A Tape Recorder E. Connecting Headphones or Conventional Speakers IV. Getting The Most Out of Your 901 Speakers…………………………………………………………10 A. Adjusting Speaker Placement B. Adjusting The Equalizer Controls C. Improving Room Acoustics D. Selecting The Right Amplifier E. The Only System Better Than A Pair of 901s V. In Case of Difficulty …………………………………………………………………………………………………………14 VI. Technical Information……………………………………………………………………………………………………………14 VII. Accessories and Options…………………………………………………………………………………………………15 VIII. Five Year Warranty……………………………………………………………………………………………………………16 ## INTRODUCTION Thank you for purchasing the BOSE 901 Series Ⅱ Direct/Reflecting*speaker system.The listening enjoyment ex-perienced with your BOSE 901s culminates many years of research and dedication to the art of bringing the finestmusical reproduction into your home. THE BOSE 901 with its unique shape,9 drivers,and Active Equalizer incorporates a number of major advances inspeaker technology.It is designed,installed,and connected differently from conventional loudspeakers.These majordifferences contribute directly to the new level of realism of music reproduction provided by the 901 speaker system. The detailed nstallation and placement instructions are important.PLEASE TAKE THE TIME TO READ THISMANUAL,as this is the only way you will obtain the fullbenefits of the 901's unique design.You willbe amplyrewarded by the listening pleasure which your 901s provide,when properly installed. ## II. UNPACKING YOUR 901s The 901 speaker system is packed in two cartons marked "Part 1"and "Part 2."THE ACTIVE EQUALIZER ISCONTAINED IN A CARDBOARD WEDGE FOUND IN PART 1.Unpack both cartons carefully.(Save the cartonsand packing materials for possible use later.)If either the speakers or the Equalizer are visibly damaged when you un-pack them,do not place the system in operation.Repack the speakers and the Equalizer in the original cartons andnotify your dealer immediately.(See Section V.) ## I11. INSTALLATION OFYOUR 901s A SPEAKER PLACEMENT One of the most important advantages of the BOSE 901 speaker system is that it is designed to operate properlyin most listening rooms,not in anechoic test chambers.The superior dispersion characteristics of the 901 allowconsiderable freedom of placement and an unusually large "best listening area."To obtain the fullperformanceof the 901,you must follow the placement guidelines in this section. The angled (vee shaped)grille cloth panels are the back of the 901.Point the vee toward the wall.The distanceof the speakers from the wall is very important.The point of the vee should be 12 inches from the wall.(Although the 901 was designed to be placed 12 inches from a reflecting wall,satisfactory performance can beobtained anywhere within the range from 8 to 24 inches.)The point of the speaker should be aimed directly atthe reflecting wall,and NOT directly into a corner(See Fig.1). -18".36"→ FIG.1 The reflecting wall ideally should be made of a dense,solid substance such as wood,brick,cement block,plaster.or sheetrock.Substances like glass,pegboard,cork,or acoustic ti

FAQs

What is included with the BOSE 901 Series II system when unpacking?

The system is packed in two cartons labeled Part 1 and Part 2. The Active Equalizer is in a cardboard wedge found in Part 1.

How should the speakers be positioned relative to the wall?

Point the vee-shaped grille cloth panels toward the wall, with the vee about 12 inches from the wall. Aim the point of the speaker toward the reflecting wall and not directly into a corner.

Why is correct speaker wire selection important?

If the chosen wire has too much resistance, it can cause audible coloration of the sound and loss of power. The manual provides permissible wire lengths for different wire gauges.

Nov 4, 2026

Uploaded by Muffet