ACI Opal Owners manual

Opal

Contents:

Guarantee/Warranty …2
Specifications …4
Hookup …4
Using Your Opals …5
Video Applications …5
Avoiding Damage …6
Positioning the Opals …7
Speaker Break-In …9
Design Philosophy …9
Troubleshooting …11
Warranty Registration …13

Owner’s Manual

Audio Concepts, Inc.

901 South 4th Street, La Crosse, WI 54601 Phone:[phone] Fax:[phone]

Website: www.audioc.com Email: [e-mail]

All Rights Reserved 2001

Sound that Satisfies…

Audio Concepts, Inc.

Our Guarantee and Warranty

Satisfaction Guaranteed:

We’re sure you’re going to love your new Audio Concepts, Inc. (ACI)
products! In the unlikely event that you are not satisfied, please contact us
within 30 days of receipt of your ACI products for a hassle-free return.

1. Return Authorization: Call us at [phone] or email [e-mail], within 30 days of

receipt of your ACI products for a return authorization number. Clearly mark the return authorization
number on the outside of the box. Include a brief note stating your name, address and daytime
telephone number, along with a short description why the products are being returned.

2. Returning: We request that you return the ACI products to us in their original packaging and

include packaging materials, manuals, etc. Ship by the most economical means (preferably UPS)
and insure the products for the invoice purchase price. The customer is responsible for return
shipping. Please note: ACI does not accept C.O.D. returns.

Credit: Upon receipt and inspection, we will issue a refund for the invoice purchase price and

3.

invoiced UPS Ground service only. Please note this return policy is in effect only if the ACI products
are in new condition, in their original packaging, without drilled holes, disassembled or any other
modifications.

2

Speaker Manufacture’s Warranty:

For five years from receipt, Audio Concepts, Inc. will, at its option, repair or
replace factory defective components. This warranty does not apply to products that
have been abused, modified, or disassembled in any way. This warranty does not
apply to products, which have been damaged in shipping. Audio Concepts, Inc. liability
is limited only to the replacement of defective parts. No other liabilities or obligations
are written or implied.

Return Authorization: Call us at [phone] or email [e-mail] for a return

1.

authorization number. Clearly mark the return authorization number on the outside of the box.
Include a brief note stating your name, address and daytime telephone number, along with a short
description why the products are being returned.
Returning: Carefully repack defective ACI merchandise. Ship by the most economical means

2.

(preferably UPS) and insure the products. The customer is responsible for return shipping.

Please note: ACI does not accept C.O.D. returns.

Replacement: Audio Concepts, Inc. will inspect and determine the cause of failure and will pay

3.

return shipping on the defective goods replaced or repaired.

The above stated guarantee and warranty applies only to assembled speaker

models purchased directly from Audio Concepts, Inc. A different warranty and
guarantee applies to purchasers of parts kits and DIY components.

Please ship any returns to the following address:

Audio Concepts, Inc., 901 So. 4th Street, La Crosse, WI 54601 [phone]

IMPORTANT NOTICE

All new speakers require a minimum of 60 hours break-in-time before
they sound the way they are supposed to. A speaker's performance improves
significantly once broken in. It is critical that you have at least 60 hours on your
speakers before you evaluate them. Don't worry if your speakers do not sound perfect
the first time you play them. This is normal until they are broken in. If you are having
difficulty getting enough hours on your speakers and your 30 day return privilege is
getting near, call us. We will work with you. Please give us the courtesy of breaking
the speakers in before you determine they don't sound right.

Many of our customers break their speakers in by:

3

A) Leaving them on at moderate listening levels when they are not home.
B) Leaving them on at moderate listening levels while they sleep.
C) Running pink noise through them.

These methods are not convenient for everyone and we understand this. But
please know that you are not giving yourself, your speakers or us a fair chance if you
do not break them in before critical evaluation.

THANK YOU!

The Opal

Thank you for your order and congratulations on becoming the owner of an Audio
Concepts, Inc. (ACI) speaker system. These fine speakers will provide you with many years of
listening pleasure!

Please take the time to read this manual. We’ve tried to provide you with the
information you’ll need to gain the most enjoyment from your speakers. Should you have
questions about the use of your speakers, not answered in the manual, please E-Mail or call.
We guarantee your satisfaction with the finished product. (Please see warranty sheet for
details.)

Specifications:

Frequency response: 48-20kHz +3db anechoic, (actual useable in-room bass response will

extend cleanly to 30-35Hz)

Nominal impedance: 8 ohms, minimum impedance 7 ohms
Sensitivity: 88.5db 1 watt/1 meter
Bass-loading: Aperiodic Bessel alignment
Recommended RMS Power: 30 to 200 watts per channel
Tweeter: 1” Silk-fabric dome with ferro-fluid
Bass-mid: 8” coated pulp cone with rubber surround and vented low-distortion motor design
Cabinet: Full ¾” medium density construction with internal bracing, clear lacquer on American

oak, black oak or cherry

Inputs: Gold plated, heavy-duty, five-way binding posts
Dimensions: 38-1/8” tall, 10-1/8” wide, 13-1/4” deep
Recommended accessories: “Extra Points” (included).

4

Hookup

Your Opals are furnished with five-way type binding posts. You may choose to utilize
spade lugs, banana jacks, pins, or bare wire. It is important that the positive and negative
leads do not touch. If you use bare leads, be sure to twist them tightly and insert through holes
in such a manner that they do not fray or short out against each other. Good connections are
important, so make sure any ends are tightly crimped and preferably soldered to the wire
ends. Speaker wires should be kept as short as possible, (long wires add excessive
resistance and color the sound.) The use of quality wire is recommended. ACI stocks and
recommends the Silver Sonics from DH-Labs.

Make sure you hookup the speakers in the correct polarity. The red (positive) terminal
on your amp should hook up to the red binding post, and the black terminal should be
connected to the black binding post. Keep this the same for both speakers in a stereo pair. A
way to check the correct polarity is to play music with a lot of bass. The correct hookup will
yield the greatest amount of bass.

The Opal crossovers are designed to allow two pairs of binding posts per speaker for
bi-wiring. Bi-wiring requires two pairs of speaker cables. From the factory the posts are
connected with a jumper to enable conventional hookup. To bi-wire, remove the jumpers and
use a bi-wire cable or two speaker cables to hook each set of posts to your amplifier. The
upper posts are for the tweeter and the lower posts are for the bass-midrange driver.