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EQ901 B Series User Guide

Introduction

1

1. Features

2

2. What’s Included

2

3. Typical Installation Examples

2

3.1 Tape Monitor Loop Setup

2

3.2 Preamp / Power Amplifier Setup

3

3.3 Connecting a Power Subwoofer

4

3.4 Typical Setup I/O

4

3.5 AC Power Connection

5

4. Setting Input Levels

5

5. Accessing the Input Level Switches

6

6. Using the Dual Output EQ Curves

6

7. Specifications

7

8. Warranty Terms

7

Contact Deer Creek Audio

8

Introduction

The Deer Creek Audio EQ901 B Series is a direct replacement for existing BOSE 901
equalizers. The EQ901 B features dual output equalization (EQ) curves, Normal and
Enhanced, either of which will accommodate your 901 Series and can be selected based on
personal preference. See below for instructions on using this feature.

The EQ901 B installs in your tape monitor loop, pre-out/pre-in loop or between your preamp
and power amp. Switchable input levels between 0.9 Vrms and 2.0 Vrms accommodate use
with most preamplifiers, amplifiers or receivers. The EQ901 B series is based on the miniDSP
2x4 digital signal processor.

Page 1

EQ901 B Series User Guide - Rev. 04012022 deercreekaudio.com

Summary of Contents for EQ901 B Series

Page 1: ...io EQ901 B Series is a direct replacement for existing BOSE 901 equalizers The EQ901 B features dual output equalization EQ curves Normal and Enhanced either of which will accommodate your 901 Series and can be selected based on personal preference See below for instructions on using this feature The EQ901 B installs in your tape monitor loop pre out pre in loop or between your preamp and power am...

Page 2: ...equalization curves for your 901 Series Regulated power supply 3 Typical Installation Examples Analog audio input and output connections are made directly to the RCA input and output jacks For RCA connections 1 is Left L and 2 is Right R When making these connections make sure to power off the equipment being connected 3 1 Tape Monitor Loop Setup Page 2 EQ901 B Series User Guide Rev 04012022 deerc...

Page 3: ...ple shows a typical connection between a preamp and power amp If you have a receiver or integrated amplifier with a pre out main in loop you can insert the EQ901 B as shown below Page 3 EQ901 B Series User Guide Rev 04012022 deercreekaudio com ...

Page 4: ...bwoofer The two unused outputs connect to your subwoofer L and R line inputs The subwoofer controls can then be adjusted to your preference 3 4 Typical Setup I O Page 4 EQ901 B Series User Guide Rev 04012022 deercreekaudio com ...

Page 5: ...need to switch the unit to the 2 0 Vrms setting The EQ901 B model is shipped with the input levels preset to 0 9 Vrms 0 9 Vrms position With this setting the maximum input signal voltage allowed before clipping the A D convertor is 0 9 Vrms This position is typically used when the EQ901 B is connected between a preamp and a power amplifier 2 0 Vrms position With this setting the maximum input sign...

Page 6: ...onitor loops you can connect the EQ901 B outputs 1 and 2 to tape playback inputs 1 and outputs 3 and 4 to tape playback inputs 2 Then you will be able to switch easily between the two equalizer curves If your configuration is a pre amplifier out main amplifier in setup you ll need to manually move the cables from outputs 1 and 2 to outputs 3 and 4 Be sure to power off all equipment before making t...

Page 7: ...ted to be free from defects in materials and workmanship for a period of one year from the invoice date Warranty does not cover failure of the product due to incorrect connection or installation improper or undocumented use unauthorized servicing modification or alteration of the unit in any way or any usage outside of that recommended in this manual Return shipping is the responsibility of the cu...

Page 8: ...Contact Deer Creek Audio Please contact us with any questions or comments staff deercreekaudio com 720 726 9272 Page 8 EQ901 B Series User Guide Rev 04012022 deercreekaudio com ...

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