Bohlender Graebener R-88-SUB Owners manual

The Power of Clarity

Owner’s Manual and Setup Procedures

Radia Series.....................R-800 / R-400C / R-88Sub / BGA-2500

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Introduction

Congratulations and thank you for selecting state of the art Radia Series In­Wall loudspeakers from BG Corp. We have assembled your loudspeakers
with the greatest care and using the finest materials available. This
craftsmanship, combined with our patented planar ribbon technology,
delivers sound unmatched by any conventional loudspeaker.

The Radia Series, BG’s finest In-Wall loudspeakers, are ideal for either
critical music listening or high performance home theater applications. The
line is comprised of models R-800, R-400C, R-88Sub. The BGA-2500
amplifier is used to drive the R-88Sub and active woofer section of R-800.

NOTE: This installation manual is primarily written for the professional
custom installer who will have the necessary experience for a perfect
installation and be familiar with local electrical and construction codes.

CONTENTS:

Page

Introduction and Table of Contents......................... 2

Important Owner Information................................... 3

General Information ................................................ 4

Installation ..........................................................…..6

Construction Principles and Preparation

Connecting to Electronic Components

Installation
Processor and Amplifier Settings

Warranty Information ….......................................... 15

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Important Owner Information

Read and Follow Instructions – Please read this entire manual before unpacking

and installing the Radia Series In-Wall loudspeakers. For optimum performance and
years of trouble-free enjoyment, all operating and care instructions should be followed.

Retain – DO NOT discard any factory packing material. The packing and shipping
materials may be required in the unlikely event your loudspeakers need to be moved or
shipped to our service center at BG.

Cleaning – Use a wax-free cleaning substance only (i.e. Pledge™) with a soft, dry
polishing cloth not a paper-based chamois. DO NOT spray any cleaning solutions
directly on the grill as it can clog its perforations.

Liquid – DO NOT place BG loudspeakers near an open source of liquid that may spill
on the loudspeaker surfaces.

Heat – DO NOT place BG loudspeakers near a direct heat source.

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General Information

Unpacking Your BG Loudspeakers and Amplifier

1. Due to its size and weight, the R-800 is shipped in a wooden crate. Other models
are shipped in cardboard boxes. Place the shipping box down on the floor, ensuring
that you have adequate space to set the loudspeaker down after removing it from
the box. Caution: If your floor is not carpeted, lay a blanket or other suitable soft
fabric on the floor to prevent possible damage to the loudspeakers.

2. Rotate the box if required, so that the white product label affixed at the factory is on
top and facing up.

3. Pull the top flaps (cardboard box) or the top cover (wooden crate) of the shipping
box up, taking care not to cut yourself on the staples used to close the box. Open
the other cardboard end flaps to expose the loudspeaker still cradled in its
protective foam and inside a protective plastic bag. Remove the foam pieces over
the top of the loudspeaker.

4. The R-800 has two plywood panels attached with screws on the sides that secure

the loudspeakers into the box. Use a screwdriver to remove those panels before
taking the speakers out.

5. Remove the loudspeaker by lifting it straight up and out of the box. Due to their

weight, we recommend that two people work together to remove the R-800 from the
crate.

6. Cut the taped seams of the amplifier box with a utility knife. Open the box flaps and

carefully remove amplifier from the box.

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General Information

General considerations

The R-800, R-400C and R-88Sub are high output, full range systems that are designed
to be installed in the wall. If there is a room adjacent to the wall where the system is
installed, low frequency bass sound will be heard there due to natural sound
transmission. The Installer should take the utmost care with the wall preparation to
reduce natural vibrations. See details in the Installation section.

Proper Hookup: All Radia in-wall speakers have binding post connections clearly

marked “+” and “ –“.
Connect Red speaker terminal post to positive (+) amplifier post.

Connect Black speaker terminal post to negative (-) amplifier post.
The R-800 must be bi-amplified by running separate dedicated loudspeaker wires from

BGA-2500 amplifier to its woofer section and from your power amplifier to ribbon line
array section of this speaker system.

Break-In Times: Typically a BG loudspeaker requires not less than 48 hours of

operation at moderate sound level before reaching its optimum sound quality. This
improvement may be subtle yet noticeable for a trained listener. Note: Do not play your
loudspeakers excessively loud to try to accelerate this process.

Amplifier: BG loudspeakers are extremely accurate and deliver a high degree of

detail and resolution at low distortion. Use an SPL meter to verify playback levels. A
good 100-250 watt per channel amplifier or receiver is needed to deliver adequate
power for a typical room size. Your authorized BG Dealer can recommend an amplifier
and other components and accessories best suited to your needs.

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