AV123 Your Rocket UFW-10 Manual de usuario

Your Rocket

UFW-10

Subwoofer

Enjoyment

Guide

Yours exclusively through

1001 Delaware Ave. • Suite C • Longmont, CO 80501 • Toll Free 1-877-543-7500 • e-mail: [email protected]

A Suggestion

Your Rocket UFW-10 subwoofer is carefully hand-packaged utilizing molded

foam inserts to protect its fine furniture-grade finish. Please use care when

unpacking your new subwoofer. When removing it from the box, hold the

wood sides of the cabinet, while taking care not to exert pressure on the front

cloth grille.

We strongly recommend that you save the foam inserts and shipping cartons

to protect your speakers, should you ever need to move or ship them to a

new location.

Thank you. And Congratulations!

Our thanks for buying Rocket Series speakers from AV123. We sincerely ap-

preciate your confidence in us and our products.

Although we know these speakers represent extraordinary value, we also

know that the real test is how you feel about your speakers several months

from now. That’s why AV123 will continue to work hard to earn your respect

with technical advice and customer service that is second to none in our in-

dustry.

You can visit the AV123 website (www.av123.com) at any time for up-to-date

product information, answers to FAQ’s, or to seek advice from the AV123

community at our new online forum (www.av123forum.com).

Should you require that personal touch, please don’t hesitate to contact our

support department, toll-free, at (877) 543-7500. You’ll find our knowledge-

able Technical Services Department eager and willing to help.

We ask you read this owner’s manual first. It contains many tips on getting

your new subwoofer set up, connected, configured, and performing its abso-

lute best in your unique environment. We hope you find it clear, concise, and

useful.

Again, thank you for your support.

Your Rocket UFW-10 Subwoofer

Enjoyment Guide

Table of Contents

Introduction

Section 1—Product Overview

• 1.1 Control Panel Features

• 1.2 Brass Feet, Discs, and Rubber Feet

a. Spike Feet

b. Brass Discs

c. Rubber Feet

Section 2—Subwoofer Placement and Location

• 2.1 Subwoofer Placement

• 2.2 Subwoofer Location

Section 3—Connecting Your UFW-10 Subwoofer

Section 4—Setting Up Your Surround Processor or Receiver

• 4.1 Small or Large?

• 4.2 Simple Calibration

• 4.3 Crossover Settings

• 4.4 UFW-10 Phase Adjustment

Section 5—Advanced Calibration and Correction

• 5.1 Performing a Room Frequency Sweep

• 5.2 Interpreting the Results

• 5.3 Advanced Parametric EQ Adjustments

Section 6—Proper Care and Feeding

• 6.1 Warranty Policy and Terms

• 6.2 Stay in Touch!

• 6.3 UFW-10 Specifications

• 6.4 Miscellaneous

Thank you for your support

Introduction to AV123 and your new

Rocket UFW-10 Subwoofer

At AV123, our absolute highest

priority begins and ends with you,

the customer. You can rest as-

sured that if you’re not 100% sat-

isfied with your purchase within 30

days from your original receipt

date, you may return your product(s) for a

prompt refund in full (excluding shipping

charges) no questions asked. In addition to the

expert advice available on our website, or

through our trained advisors, there is simply not

a safer way to buy. At AV123, misleading and

high-pressure sales tactics are a thing of the

past. Not only do we offer you the tools and re-

sources necessary to fully evaluate your pur-

chase before the order is placed, we’ll back each

and every sale after the fact with our in-home

trial period.

We’ve done our best to provide you with prod-

ucts and services meeting or exceeding your ex-

pectations. However as good as our products

are, they do not match our dedication to each

and every sale. Should you need any further

assistance in the future with your A/V system,

you can bet that AV123 will be there supporting

and assisting you as you make your way to your

next level of audio/visual enjoyment.

The Onix Rocket UFW-10 (Ultra Fast Woofer) is a

very potent and agile subwoofer. Special care

and attention was given to the UFW to ensure

clean, accurate, and extremely detailed low-end

performance in both music and home theater

systems. Features include a 500-watt amplifier,

single band parametric equalizer, adjustable

crossover, and infinite phase adjustment for easy

in-room placement. This flexibility will result in a

seamless blend with all Onix loudspeakers, as

well as those from other manufacturers.

Section 1—Product Overview

1.1 Control Panel Features (see figure 1.1)

A. Power switch

B. Power On Indicator – Glows brightly when

the unit is on. Glows dimly when unit is

in standby. The unit will automatically

turn on in the presence of an audio signal.

Approximately 15 minutes of signal ab-

sence will cause the subwoofer to go into

standby mode. To fully turn off the unit,

please unplug it from the wall.

C. Line Fuse – The UFW-10 is equipped with

a 4-amp fast blow fuse. Always replace

with the same rating.

D. Power Cord – A standard IEC socket al-

lows removal of the power cord.

E. LFE/MONO XLR (balanced) connection. If

your preamplifier has XLR output avail-

able, use this connection.

F. Audio Inputs – Standard RCA

(unbalanced) type cables will work here.

If your preamplifier or receiver has only

one sub out, use the R (L+R Summed)

connection.

G. Crossover In/Out switch – When set to

IN, the crossover is activated. When set

to OUT, the crossover is disabled.

H. Crossover Adjustment – This controls the

high-frequency cut off. Generally this is

set to 80Hz if used. We will cover this in

detail later in the manual.

I. Phase – This controls the phase of your

subwoofer relative to the rest of your

speakers. Rotate this dial in small

amounts while you listen at your listening

position for the most bass.

J. Gain – This control allows you to match

the output of your main/satellite speakers

to the sub. Set this to the lowest level

when powering your system for the first

time. When calibrating your system, do

not exceed 75% gain. You’ll want some

room for adjustment...try to avoid setting

the gain in either your receiver (through

the channel “trim” menus) or your sub-

woofer near maximum levels. Doing so

will also minimize the potential for a dis-

torted input signal.

K. EQ – Single band parametric equalizer.

Includes controls for Frequency, Band-

width and Level. Use these controls to

modify the frequency response at any

point. The frequency range is 20Hz to

80Hz…bandwidth from 0.1 to 1.0 oc-

taves…and a level adjustment from –15dB

to + 6dB.

1.2 Brass Feet, Discs, and Rubber Feet

Spike Feet

Included with your Rocket

UFW-10 subwoofer are the

same high quality threaded

spike feet used on all Rocket

Loudspeakers. For carpeted

floors, simply screw the spikes

into the threaded inserts lo-

cated on the bottom of your

UFW-10 Subwoofer. On uneven surfaces,

use these feet to help compensate.

Brass Discs

To protect your hard flooring surface, we have

also included metal discs to provide a contact

point between your

speaker spikes and the

floor. To use, simply

place the disc under

the spike such that the

small indentation is

aligned with the point

of each foot.

Figure 1.1

Rubber Feet

As an alternative to both methods above we’ve

also included soft self-

adhesive rubber bumpers

with your UFW-10 Sub-

woofer. These provide a

safe alternative to the metal

spikes, and will also absorb

any vibrations between the

subwoofer and underlying

surface. The choice is yours

for preference and practical-

ity, but you'll find the results

to be very good either way.

Section 2—Subwoofer Placement

and Location

2.1 Subwoofer Placement

Unlike regular loudspeakers, subwoofers will of-

ten work best when placed in a corner, even if

located a few feet to the side and/or behind the

closest main speaker. Typically the front right

and left corners sound the most natural, though

rear corner placement is also an acceptable op-

tion. The driver can be facing you or be pointed

along either wall. The low frequency sound

waves emitted by the UFW-10 are quite long and

will therefore interact greatly with the walls of

your room. As a result, even small placement

adjustments can have a significant impact on the

sound you hear. A room corner will provide

maximum output at a given power level, and the

maximum number of room modes will be ex-

cited, translating to a flatter response in most

rooms. Often one rather large peak in the sub-

woofer’s operational frequency range will stand

out with corner placement,. For this we've also

provided the UFW-10 with the ability to alter its

response for your new environment with an on-

board 1 band parametric equalizer. As “boomy”

bass is often the result of the largest untamed

peak, we're confident that you will find this fea-

ture an indispensable tool for shaping your sub-

woofer into the way you'd like to hear it. Flat,

clean, and powerful. More on this in section 5.

2.2 Subwoofer Location

The low frequencies played by your UFW-10 sub-

woofer tend to be non-directional due the ex-

traordinarily long wavelengths involved. As a

result, regardless of where your subwoofer is

placed, it should not be easily localized, but

should instead produce a balanced and envelop-

ing response. Factors that can affect perform-

ance in this regard are rattles from shelves,

walls, or other nearby objects, as well as dis-

torted output. If you are having issues with sub-

woofer localization, try to isolate any rattling or

buzzing objects, or place the sub in another cor-

ner of your room. If the sub's output is dis-

torted, check to see that you are not at the

maximum sub level setting on your receiver or

pre/pro. An overdriven output can induce audi-

ble distortion. To resolve, you may need to turn

down the subwoofer level on your processor and

turn the gain level up on the subwoofer itself to

compensate.

Section 3—Connecting Your UFW-10

Subwoofer

NOTE: Please be sure your subwoofer is not

plugged in and the rest of your system is turned

off.

Figure 3.1

When making your connections, be sure to use a

high quality and reliable interconnect cable. It

should be shielded and long enough to do the

job, but not excessively long. Your subwoofer

LFE Output

L+R Summed Input

Mono RCA/XLR Interconnect

Figure 2.1

cable is likely to be the longest interconnect in

your system.

The simplest and recommended connection be-

tween a home theater receiver or processor and

your UFW-10 Subwoofer is directly from the sub/

LFE output to the “R” (L+R summed) input on

the UFW-10. If your processor has a "balanced"

subwoofer output, it's use is recommended. See

figure 3.1.

If used with a 2-channel integrated amplifier, or

any source without a dedicated sub/LFE output,

you will need to use both the L and R inputs on

the UFW-10’s back panel from a low-level output

on your preamplifier or receiver. Often “Tape” or

“Monitor” outputs will provide an appropriate

low-level stereo signal if the dedicated output

does not exist. See figure 3.2 below…

Figure 3.2

Section 4—Setting Up Your Surround

Processor or Receiver

4.1 Small or Large?

Many of today’s surround processors and home

theater receivers will allow you to set all 5

speakers in your room to either small or large,

thus changing the way your UFW-10 interacts

with your system.

Like almost all things audio, which setting to use

is somewhat subjective, though it’s also a func-

tion of your room. By a good majority, most

rooms will obtain their best sound with all speak-

ers set to "small" and crossed over to the UFW-

10 at 80Hz. Of course this is assuming the use

of a high performance subwoofer such as the

UFW-10. A strong sub ideally placed will handle

Stereo pair RCA Interconnects

Stereo R and L Output

sub-80Hz information better than "most" loud-

speakers in "most" rooms. This is mainly due to

the tendency for competing sources of informa-

tion below 80Hz to result in destructive bass

wave cancellation, thus eliminating the very fre-

quencies your subwoofer was designed to play.

In addition, when crossed over with your UFW-

10, the other loudspeakers in your system will

play with greater ease and less distortion, free

from the demands of deep and complex sub-

80Hz waveform reproduction.

Your speaker system amplifier will be less taxed

as well, since much of the stress of producing

deep bass will be eliminated. Consequentially

your loudspeakers should sound cleaner and

more controlled.

An easy and "user friendly" way to test different

methods and frequencies for crossing over your

subwoofer is to use low frequency sweeps re-

corded on special program material. One of our

favorite is the "AVIA Guide To Home Theater"

DVD. Specifically, the tones that descend in

frequency from the individual satellite speakers

to the subwoofer are quite useful and effective.

Using your SPL meter (explained in the following

sections), watch for the smallest amount of over-

all needle fluctuation while you direct and de-

scend the tones from speaker to subwoofer as

you go around your system. In other words, the

point at which the signal transitions between

your satellites and subwoofer should be com-

pletely seamless and without definition.

4.2 Simple Calibration

To begin configuring your sub-

woofer for optimum performance

(a) in your room and (b) in combi-

nation with your other loudspeak-

ers, you’ll first need a Sound Pres-

sure Level (SPL) meter. Radio

Shack sells an analog SPL meter

(shown to the left) that works very

well for this purpose. Set the meter

to "Slow" with a “C” weighting. The

dial should be set at either 70 or 80

depending on your pre/pro or receiver’s test tone

level. Consult your owner’s manual to determine

what reference point your unit uses. Most use

75dB, so the "70" setting on the meter would be

appropriate for them.

Let's start by setting the level of your sub to

match the rest of your speakers.

• From the receiver or pre/pro's speaker cali-

bration menu, set the subwoofer level to

0dB. Start with the gain on the subwoofer

around 1/4 to 1/2 of the way up from the -15

mark.

• In the speaker configuration menu, be sure

all your speakers are set to “small” with sub-

woofer to "yes". For this exercise, the cross-

over should be set to 80Hz.

• Set the volume control on your pre/pro or

receiver to the "00 dB" level. See the note

below if your unit uses a positive number

scale for volume instead of a minus-to-plus

scale.

• Ensure that all main, center, and rear chan-

nels are calibrated to the reference point us-

ing your test tones, then direct the tone to

the subwoofer. Adjust it's level using the

gain control on the subwoofer itself until it

reaches the sound pressure level used for the

other speakers.

An assistant is very helpful in this process.

Some like to run their sub a bit louder (“hot”) for

movies by increasing the sub level (in the re-

ceiver’s control panel) by 5dB or so above the

main channel level. This can be very effective at

lower listening levels, but be sure to use care

when watching that big action movie for the first

time...especially at or near reference levels!

Once the subwoofer is calibrated, small adjust-

ments can be made easily using the subwoofer

level control in your processor. If you find the

need to go much above +2 or +3 consistently,

we recommend adjusting the gain control on the

sub’s amplifier upward rather than using the re-

ceiver’s volume control—this will eliminate the

possibility of the subwoofer receiving a distorted

input signal. Conversely, using too low of a

value for the subwoofer level on the processor

may result in difficulty keeping the subwoofer's

auto-on feature "awake" during quiet passages.

Note: If your unit does not use a minus/plus vol-

ume scale, activate the test tones and increase

the volume of your pre/pro or receiver until it

reaches 75dB or 85dB on your SPL meter. Re-

member this number as this will be “reference

level*.” Remember to check with your unit’s

manual to determine if they use a 75dB or 85dB

test tone.

*What is reference level? Reference

level allows for peaks of 105dB from the

speakers and 115dB for the LFE channel.

When calibrated as above, the correct

relative volume of each speaker will be

as the director/sound engineer of the

film intended.

4.3 Crossover Settings

Your UFW-10 Subwoofer features a defeatable,

continuously variable crossover that allows you

to set a low-pass filter at any point between

40Hz and 150Hz. In addition, many popular re-

ceivers and surround processors also feature

built-in electronic crossovers (please consult your

receiver’s instruction manual). If present, we

recommend using your receiver’s crossover and

setting the UFW’s crossover switch to “out” thus

disabling this feature.

After setup is completed, during which an 80Hz

crossover is recommended, you can adjust your

crossover accordingly either in the subwoofer it-

self or as recommended in your receiver’s setup

menu. Typically, the smaller your speaker OR

the louder the system will be played, the higher

the crossover point. Conversely, larger speakers

OR lower volumes allow for lower crossover set-

tings. The THX standard, and the recommended

crossover with your UFW-10 is 80Hz for home

theater.

4.4 UFW-10 Phase Adjustment

The phase dial (see “I” on figure 1.1) controls

the relative phase of the subwoofer to best rein-

force the other loudspeakers in your system.

Adjustments to this control will change your

UFW-10’s interaction with the rest of your

speaker system, providing the least cancellation,

and thus the best response in any room. With

SPL meter in hand (or, better yet, on a tripod),

play an 80Hz tone (for this exercise the cross-

over point must be set to 80Hz) and slowly ro-

tate the phase control from "0" towards “180.”

Watching your SPL meter, find the point that re-

sults in the biggest peaks in sound pressure lev-

els (i.e. reads highest on the meter). This set-

ting indicates the least amount of bass wave can-

cellation, and should be held constant until the

subwoofer or other speakers in your room are

moved, or placement is altered in any way. With

typical front corner placement in most rooms,

you may very well find the "0" setting to be opti-

mum.

Section 5—Advanced Calibration and

Correction

One of the most impressive features of your

UFW-10 Subwoofer is the built-in parametric EQ

shown as “K” in figure 1.1 and detailed below in

figure 5.1. Depending on the nature of your

room or listening environment, your subwoofer

may be reinforcing certain frequencies in the

UFW-10’s operating range such that they are sig-

nificantly louder (at your listening position) than

the desired response. Using the three dials

shown in figure 5.1 below, the UFW-10’s para-

metric equalizer will allow you to flatten up to 1

peak in your room, thus giving you the flattest

(most natural) overall response.

In order to find out exactly how your room is af-

fecting your UFW-10 Subwoofer, you need to

perform a “frequency sweep” of your room. This

will give you a graphical representation of how

the UFW-10 is performing in your unique listen-

ing environment.

5.1 Performing a Room Frequency Sweep

Though there are a number of ways to perform

an accurate frequency sweep, we’ve detailed the

steps involved in the most basic method below.

a. Sit in your favorite seat and hold your Ra-

dio Shack SPL meter at a 45-degree angle

half way between horizontal and vertical.

b. The meter should be placed at ear level

when seated in the primary listening posi-

tion, and is best if supported by a station-

ary object such as an end table or tripod.

c. Assuming you have already calibrated all

channels to reference level, set your sub’s

volume to 70dB.

d. Play a 20Hz track from a test tone CD,

such as one available through

www.rivesaudio.com, and record BOTH

the frequency (your x-axis), which corre-

sponds to the track on the test disc, and

the SP level (your y-axis) as shown on

the meter.

e. Next, play the tracks from 25Hz to 120Hz

and record the SP Level for each fre-

quency played.

Important Note: The RadioShack sound meter

uses C-weighting. As a result, a correction key

is needed to ensure proper response before your

final measurements are plotted. We suggest

gathering your data using the readings on the

meter and then correcting your results with the

compensation coefficients shown in figure 6.1 (at

the end of this manual). The Rives disc men-

tioned above includes compensated test tones.

5.2 Interpreting the Results

Once you’ve completed this exercise, you will

have a data list much like that shown in figure

5.2 below (though much more detailed and com-

plete).

Now that you have a complete data set derived

from YOUR room, you need to plot this response

visually, either in MS Excel or simply on graph

paper (a computer application is recommended

to smooth the curve) to obtain a graphical repre-

sentation of your room’s effect on the UFW-10.

An example, derived from figure 5.2 above, is

shown on the following page in figure 5.3.

Frequency

(Hz) Gain (dB)

20 64

25 67

32 70

40 71

55 74

63 71

80 72

100 70

Figure 5.1

Figure 5.2

Figure 5.3

Note the relative flatness of the overall response

as well as the magnitude of your largest peak.

Some nulls are likely to be present, however fill-

ing in a null or dip with any EQ is not likely to be

effective, and the power required can make such

an attempt undesirable. If desired or necessary,

you may wish to try moving the sub to a new lo-

cation for a flatter response. Sometimes only a

few inches can make a significant difference. It's

recommended that these tests be performed us-

ing the same speaker configuration and place-

ment you'll be using while enjoying your system,

such that the interaction between the speakers

and the subwoofer can be observed. By and

large we recommend sticking with front corner

placement if possible for the benefit of the

"corner loading" increase in output, thus using

the EQ only to flatten the response.

5.3 Advanced Parametric EQ Adjustments

And the fun begins...

For this adjustment, you will need a test disc

with frequencies from at least 20Hz to 120Hz.

Stereophile Magazine and the previously men-

tioned www.rivesaudio.com have test discs avail-

able for sale, or you can create your own disc

with a CD writer using files found on the internet.

A web search should yield suitable tones.

Once your data is plotted as shown in figures 5.2

and 5.3 , use the Frequency (A), Bandwidth (B),

and Level (C) controls (as shown in figure 5.1) to

adjust your subwoofer’s response as follows:

A) Frequency—This control allows you to set

the exact point at which you want the CENTER of

Frequency (Hz)

30 50 80

the filter to be applied. In our example above,

we want to tame the peak that is centered at

just about 45Hz, and thus set our frequency fil-

ter to the corresponding 45Hz level.

B) Bandwidth—The bandwidth control on your

UFW-10 allows you to set the WIDTH of the filter

you want applied. This control is based on a

percentage of a full octave above, or a doubling

of frequency. Thus, when set to 1.0, the width

of the area you’ll be cutting or boosting will be a

full (one) octave, corresponding to an overall

width (start to finish) of double the frequency

(half above AND below your center point). In

this example, we estimate the “beginning” of the

peak in figure 5.3 to be at about 25Hz and the

“end” of the peak at about 80Hz...a range of

around 55Hz.

However, the 45Hz point is not centered in this

range. Because the EQ needs a range equidis-

tant to each side of our center frequency, set in

step 1, we have to extend our area slightly (or

move our center point...more on this later) to

fully compensate the range we require. Thus, in

this example, because we want our high point at

80Hz, or 35Hz above our 45Hz center frequency,

we also have to adjust 35Hz below our center

frequency, therefore expanding the width of our

“beginning” and “end” points to 10Hz and 80Hz

respectively (as shown in figure 5.5).

30 50 80

Center

(45Hz)

Desired Curve Width

25Hz 80Hz

Figure 5.4

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