ALESIS GRIP Legacy Series Audio Processor Synthesizer User Manual

User Manual

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Table Of Contents

Introduction..........................................................3

Welcome!......................................................................................................3

About the GRIP...................................................................4

GRIP Key Features .................................................................................... 4

How to Use This Manual ...................................................5

Important Safety Instructions..........................7

Important Safety Instructions (English).......................7

Safety symbols used in this product......................................................... 7

Please follow these precautions when using this product:.................... 7

Instructions de Sécurité Importantes

(French) ................................................................................9

Symboles utilisés dans ce produit.............................................................9

Veuillez suivre ces précautions lors de l’utilisation de

l’appareil: ......................................................................................................9

Lesen Sie bitte die folgende

Sicherheitshinweise (German)........................................11

Sicherheit Symbole verwendet in diesem Produkt.................................11

Folgen Sie bitte diesen Vorkehrungen, wenn dieses

Produkt verwendet wird: ...........................................................................11

CE Declaration Of Conformity ........................................13

FCC Compliance Statement ............................................. 13

Getting Started.....................................................15

Hooking Up the GRIP........................................................15

Applications.........................................................................15

DJ Setup.......................................................................................................16

Recording.....................................................................................................16

Live Performance (Club/Concert) ........................................................... 16

Important Notes on Using the GRIP .............................. 16

Rack-Mounting the GRIP ......................................................................... 16

Connecting Instruments Safely................................................................. 16

Maintaining Proper Levels.........................................................................16

Stabilizing Your Turntable and CD Player.............................................. 17

A Tour of the Grip................................................19

Front Panel ..........................................................................19

POWER Button.......................................................................................... 19

INPUT Knob..............................................................................................19

Crossover (XOVER) Knob.......................................................................19

XOVER OUT Button................................................................................ 20

SUB BASS LEVEL knob.......................................................................... 20

BASS DRIVE Knob .................................................................................. 20

GAIN REDUCTION LED Meter..........................................................21

BASS LEVEL Knob..................................................................................21

BASS LEVEL LED Meter........................................................................ 21

INPUT LEVEL LED Meter ....................................................................19

CLIP LED Indicator..................................................................................19

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Table Of Contents

LO CUT Knob ...........................................................................................21

OUTPUT Knob .........................................................................................21

BYPASS Button .......................................................................................... 21

Rear Panel............................................................................ 22

INPUT Jacks ............................................................................................... 22

OUTPUT Jacks........................................................................................... 22

XOVER OUTPUT Jack............................................................................22

IEC POWER Jack ......................................................................................22

Suggested Settings ..............................................23

Troubleshooting...................................................25

Troubleshooting Index...............................................................................25

Specifications .......................................................27

Audio Input ................................................................................................. 27

Audio Output.............................................................................................. 27

Audio Performance ....................................................................................27

Mechanical ................................................................................................... 27

Index .......................................................................31

Warranty/Contact Alesis ....................................33

Alesis Limited Warranty............................................................................. 33

Alesis Contact Information.......................................................................34

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1 Introduction

Welcome!

Thank you for making the Alesis GRIP a part of your setup. Since
1984, we've been designing and building creative tools for the
audio community. We believe in our products, because we've
heard the results that creative people like you have achieved with
them. One of Alesis' goals is to make high-quality studio
equipment available to everyone, and this User Manual is an
important part of that. After all, there's no point in making
equipment with all kinds of capabilities if no one explains how to
use them. So, we try to write our manuals as carefully as we build
our products.

The goal of this manual is to get you the information you need as
quickly as possible, with a minimum of hassle. We hope we've
achieved that. If not, please drop us an email and give us your
suggestions on how we could improve future editions of this
manual.

We hope your investment will bring you many years of creative
enjoyment and help you achieve your musical goals.

Sincerely,
The people of Alesis

or more effective

ervice and product

update notices, please

egister your GRIP

online at:

ttp://www.alesis.com

upport/warranty.htm

3

1

Introduction

About the GRIP

The GRIP offers you advanced methods for processing and
generating low frequencies for live or recorded music. It
does this via two different methods of signal processing.
First, it gives you several different means of adjusting the
character and level of the low frequencies of the input
signal. Second, it includes a proprietary sub-harmonic
synthesizer that creates sub-bass signals harmonically related
to—but not present in—the original signal. In short, it
improves the bass that is there, and creates sub-bass where
none exists.

We created the GRIP so that it adjusts only the low
frequencies of an input signal so that you can improve the
bass without sacrificing the quality of the middle or upper
ranges. Furthermore, you have precise control over which
low frequencies are processed by the GRIP. This can add a
high-fidelity sound to any musical scenario: a DJ setup, a
club PA system, sound reinforcement at a concert and even
studio or home recording projects involving any sort of
instrument.

GRIP Key Features

1. Digital signal processing with stereo input and stereo
output

2. Simple front-panel interface that gives you quick and
easy access to all functions

3. LO CUT control that protects speakers from damage
caused by ultra-low frequencies

4. Proprietary digital sub-harmonic synthesis algorithm
adds bass not present in the original signal

5. A crossover output that allows you to route the lowest
frequencies to a subwoofer

6. LED meters that provide constant visual indication of
input level, gain reduction and bass level

4

Getting Started

H

How to Use This Manual

This manual is divided into the following sections
describing the various functions and applications for the
GRIP. While it's a good idea to read through the entire
manual once carefully, those having general knowledge
about studio equipment should use the table of contents to
look up specific functions.

Chapter 3: Getting Started. If you're already experienced with
signal processing, this will get you started using the GRIP
right away. It's a short guide to the essential elements of
hooking it up and using it for the first time. We’ve included
a hookup diagram plus some applications for which the
GRIP is most appropriate. The chapter ends with some
important notes on operating the unit.

Chapter 4: A Tour of the GRIP features diagrams of the front
and rear panels, along with descriptions of each of the
controls and features found there.

Chapter 5: Suggested Settings provides some suggested front­panel settings for several usage scenarios.

Chapter 6: Troubleshooting can give you a hand if you’re
experiencing problems with the GRIP. You’ll find that most
issues can be resolved simply and quickly.

Near the end of the manual are specifications, and an index
to help you find what you're looking for.

elpful tips and advice are

highlighted in a shaded box

When something important
appears in the manual, an
exclamation mark (like the
one shown at left) will appear
with some explanatory text.
This symbol indicates that
this information is vital when
operating the GRIP.

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5

1

Introduction

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6

2 Important Safety

Instructions

Important Safety Instructions (English)

Safety symbols used in this product

This symbol alerts the user that there are important
operating and maintenance instructions in the literature
accompanying this unit.

This symbol warns the user of un-insulated voltage

within the unit that can cause dangerous electric shocks.

This symbol warns the user that output connectors contain
voltages that can cause dangerous electrical shock.

Please follow these precautions when using
this product:

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a damp cloth. Do not spray any liquid

cleaner onto the faceplate, as this may damage the front
panel controls or cause a dangerous condition.

7. Install in accordance with the manufacturer's

instructions.

8. Do not install near any heat sources such as radiators,

heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or

grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding-type plug
has two blades and a third grounding prong. The wide
blade or the third prong is provided for your safety.

7

2

Important Safety Instructions

When the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete
outlet.

10. Protect the power cord from being walked on or

pinched, particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.

11. Use only attachments or accessories specified by the

manufacturer.

12. Use only with a cart, stand, bracket, or table designed

for use with professional audio or music equipment. In
any installation, make sure that injury or damage will not
result from cables pulling on the apparatus and its
mounting. If a cart is used, use caution when moving
the cart/apparatus combination to avoid injury from tip­over.

13. Unplug this apparatus during lightning storms or when

unused for long periods of time.

14. Refer all servicing to qualified service personnel.

Servicing is required when the apparatus has been
damaged in any way, such as when the power-supply
cord or plug is damaged, liquid has been spilled or
objects have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate
normally, or has been dropped.

15. This unit produces heat when operated normally.

Operate in a well-ventilated area with at least six inches
of clearance from peripheral equipment.

16. This product, in combination with an amplifier and

headphones or speakers, may be capable of producing
sound levels that could cause permanent hearing loss.
Do not operate for a long period of time at a high
volume level or at a level that is uncomfortable. If you
experience any hearing loss or ringing in the ears, you
should consult an audiologist.

17. Do not expose the apparatus to dripping or splashing.

Do not place objects filled with liquids (flower vases,
soft drink cans, coffee cups) on the apparatus.

18. WARNING: To reduce the risk of fire or electric

shock, do not expose this apparatus to rain or moisture.

8

Important Safety Instructions

Instructions de Sécurité Importantes (French)

Symboles utilisés dans ce produit

Ce symbole alèrte l’utilisateur qu’il existe des
instructions de fonctionnement et de maintenance dans la
documentation jointe avec ce produit.

Ce symbole avertit l’utilisateur de la présence d’une
tension non isolée à l’intérieur de l’appareil pouvant
engendrer des chocs électriques.

Ce symbole prévient l'utilisateur de la présence de
tensions sur les raccordements de sorties, représentant un
risque d'électrocution.

Veuillez suivre ces précautions lors de
l’utilisation de l’appareil:

1. Lisez ces instructions.

2. Gardez ces instructions.

3. Tenez compte de tous les avertissements.

4. Suivez toutes les instructions.

5. N’utilisez pas cet allareil à proximité de l’eau.

6. Ne nettoyez qu’avec un chiffon humide. Il est

potentiellement dangereux d'utiliser des pulvérisateurs
ou nettoyants liquides sur cet appareil.

7. Installez selon les recommandations du constructeur.

8. Ne pas installer à proximilé de sources de chaleur

comme radiateurs, cuisinière ou autre appareils (don’t les
amplificateurs) produisant de la chaleur.

9. Ne pas enlever la prise de terre du cordon secteur. Une

prise murale avec terre deux broches et une troisièrme
reliée à la terre. Cette dernière est présente pour votre

2

9

2

Important Safety Instructions

sécurité. Si le cordon secteur ne rentre pas dans la prise
de courant, demandez à un électricien qualifié de
remplacer la prise.

10. Evitez de marcher sur le cordon secteur ou de le pincer,

en particulier au niveau de la prise, et aux endroits où il
sor de l’appareil.

11. N’utilisez que des accessoires spécifiés par le

constructeur.

12. N’utilisez qu’avec un stand, ou table conçus pour

l’utilisation d’audio professionnel ou instruments de
musique. Dans toute installation, veillez de ne rien
endommager à cause de câbles qui tirent sur des
appareils et leur support.

13. Débranchez l’appareil lors d’un orage ou lorsqu’il n’est

pas utilisé pendant longtemps.

14. Faites réparer par un personnel qualifié. Une réparation

est nécessaire lorsque l’appareil a été endommagé de
quelque sorte que ce soit, par exemple losrque le cordon
secteur ou la prise sont endommagés, si du liquide a
coulé ou des objets se sont introduits dans l’appareil, si
celui-ci a été exposé à la pluie ou à l’humidité, ne
fonctionne pas normalement ou est tombé.

15. Puisque son fonctionement normale génère de la chaleur,

placez cet appareil au moins 15cm. des équipments
péripheriques et assurez que l’emplacement permet la
circulation de l’air.

16. Ce produit, utilisé avec un amplificateur et un casque ou

des enceintes, est capable de produite des niveaux
sonores pouvant engendrer une perte permanente de
l’ouïe. Ne l’utilisez pas pendant longtemps à un niveau
sonore élevé ou à un niveau non confortable. Si vous
remarquez une perte de l’ouïe ou un bourdonnement
dans les oreilles, consultez un spécialiste.

17. N'exposez pas l'appareil à l'égoutture ou à

l'éclaboussement. Ne placez pas les objets remplis de
liquides (vases à fleur, boîtes de boisson non alcoolique,
tasses de café) sur l'appareil.

18. AVERTISSEMENT: Pour réduire le risque du feu ou de

décharge électrique, n'exposez pas cet appareil à la pluie
ou à l'humidité.

10

Important Safety Instructions

Lesen Sie bitte die folgende Sicherheitshinweise (German)

Sicherheit Symbole verwendet in diesem
Produkt

Dieses Symbol alarmiert den Benutzer, daß es
wichtige Funktionieren und Wartung Anweisungen in der
Literatur gibt, die diese Maßeinheit begleitet.

Dieses Symbol warnt den Benutzer der nicht
isolierten Spannung innerhalb der Maßeinheit, die
gefährliche elektrische Schläge verursachen kann.

Dieses Symbol warnt den Benutzer, dem
Ausgabestecker Spannungen enthalten, die gefährlichen
elektrischen Schlag verursachen können.

Folgen Sie bitte diesen Vorkehrungen, wenn
dieses Produkt verwendet wird:

1. Lesen Sie die Hinweise.

2. Halten Sie sich an die Anleitung.

3. Beachten Sie alle Warnungen.

4. Beachten Sie alle Hinweise.

5. Bringen Sie das Gerät nie mit Wasser in Berührung.

6. Verwenden Sie zur Reinigung nur ein weiches Tuch.

Verwenden Sie keine flüssigen Reinigungsmittel. Dies
kann gefährliche Folgen haben.

7. Halten Sie sich beim Aufbau des Gerätes an die

Angaben des Herstellers.

8. Stellen Sie das Gerät nich in der Nähe von Heizkörpern,

Heizungsklappen oder anderen Wärmequellen
(einschließlich Verstärkern) auf.

2

11

2

Important Safety Instructions

9. Verfehlen Sie nicht den Zweck des grounging Terminals

auf dem Netzstecker. Dieses Terminal wird für Ihre
Sicherheit zur Verfügung gestellt.

10. Verlegen Sie das Netzkabel des Gerätes niemals so, daß

man darüber stolpern kann oder daß es gequetscht wird.

11. Benutzen Sie nur das vom Hersteller empfohlene

Zubehör.

12. Verwenden Sie ausschließlich Wagen, Ständer, oder

Tische, die speziell für professionelle Audio- und
Musikinstrumente geeignet sind. Achten Sie immer
darauf, daß die jeweiligen Geräte sicher installiert sind,
um Schäden und Verletzungen zu vermeiden. Wenn Sie
einen Rollwagen benutzen, achten Sie darauf, das dieser
nicht umkippt, um Verletzungen auszuschließen.

13. Ziehen Sie während eines Gewitters oder wenn Sie das

Gerät über einen längeren Zeitraum nicht benutzen den
Netzstecher aus der Steckdose.

14. Die Wartung sollte nur durch qualifiziertes Fachpersonal

erfolgen. Die Wartung wird notwendig, wenn das Gerät
beschädigt wurde oder aber das Stromkabel oder der
Stecker, Gegenstände oder Flüssigkeit in das Gerät
gelangt sind, das Gerät dem Regen oder Feuchtigkeit
ausgesetzt war und deshalb nicht mehr normal arbeitet
oder heruntergefallen ist.

15. Dieses Gerät produziert auch im normalen Betrieb

Wärme. Achten Sie deshalb auf ausreichende Lüftung
mit mindestens 15 cm Abstand von anderen Geräten.

16. Dieses Produkt kann in Verbindung mit einem

Verstärker und Kopfhörern oder Lautsprechern
Lautstärkepegel erzeugen, die anhaltende Gehörschäden
verursachen. Betreiben Sie es nicht über längere Zeit
mit hoher Lautstärke oder einem Pegel, der Ihnen
unangenehm is. Wenn Sie ein Nachlassen des Gehörs
oder ein Klingeln in den Ohren feststellen, sollten Sie
einen Ohrenarzt aufsuchen.

17. Setzen Sie den Apparat nicht Bratenfett oder dem

Spritzen aus. Plazieren Sie die Nachrichten, die mit
Flüssigkeiten (gefüllt werden Blumevases, Getränkdosen,
Kaffeetassen) nicht auf den Apparat.

18. WARNING: um die Gefahr des Feuers oder des

elektrischen Schlages zu verringern, setzen Sie diesen
Apparat nicht Regen oder Feuchtigkeit aus.

12

Important Safety Instructions

CE Declaration Of Conformity

See our Web site at:

http://www.alesis.com

FCC Compliance Statement

This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference and (2) this
device must accept any interference received, including
interference that may cause undesired operation.

NOTE: This equipment has been tested and found to
comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause
harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or
more of the following measures:

-- Reorient or relocate the receiving antenna.

-- Increase the separation between the equipment and
receiver.

-- Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.

-- Consult the dealer or an experienced radio/TV technician
for help.

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2

Important Safety Instructions

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14

3 Getting Started

Hooking Up the GRIP

The following diagram shows you the standard method of
integrating the GRIP into your audio setup. See the next
section, “Applications,” for more about the connections in
this diagram, as well as some hints on other ways to use the
unit.

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Applications

The GRIP is a versatile tool that can be used in a variety of
musical scenarios. Following are a few suggestions for the
most common applications, as well as some guidelines you
should follow when including the unit in your audio setup.
We also recommend that you experiment to find out how
the GRIP best works for you.

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Getting Started

DJ Setup

When using the unit in a DJ setup, you should connect the
GRIP between the main outs of your mixer and the inputs
of your amplifier. The XOVER OUT should be connected
to a separate amplifier and subwoofer that can handle
very low frequencies.

Recording

When using the GRIP in a recording scenario, you can
connect the unit to the inserts on one or two mixer channels,
or to the mixer’s main inserts to cover the entire mix. You
can also plug an instrument directly into the GRIP and
connect the GRIP’s output to a mixer or recording device
such as a 4-track, ADAT or digital audio workstation.

Live Performance (Club/Concert)

When using the GRIP for a live performance, connect it
between your mixer and amplifier in the same way as
described for a DJ setup above.

Important Notes on Using the GRIP

Rack-Mounting the GRIP

The GRIP fits in a 1U rack space. It’s perfectly normal for
the unit itself to get a little warm during operation.

Connecting Instruments Safely

When connecting the GRIP to instruments and other
equipment, always turn down the levels of the signals going
to your speakers or headphones. Also make sure that the
GRIP’s INPUT LEVEL knob is set fully counterclockwise.
These steps will prevent any unexpected, loud noises that
could damage your speakers (or your hearing).

Maintaining Proper Levels

Never use the GRIP at extreme levels, as this also could
damage speakers. Your speakers should be safe as long as
you keep the unit at a comfortable listening volume. The
GRIP creates incredible low-end even when the volume
isn’t at maximum. If you plan on using the unit at a
considerable volume, you will need an amplifier and
speakers built to handle very low frequencies.

Connecting the GRIP’s

OVER OUT to a speaker

that can’t handle very low

requencies could

ermanently damage your

speakers if the SUB BASS

EVEL setting is too high.

lways make sure you’re
outputting this signal to a
speaker system that can
handle it.

t’s a good idea to turn off all

our equipment before
making connections. One of
the best ways to avoid
harmful transients is to turn
on your amplifier last, and
turn it off before all other
equipment.

16

Getting Started

Stabilizing Your Turntable and CD Player

Because a turntable is a delicate instrument, it is extremely
susceptible to audio vibrations that occur nearby, especially
low-frequency vibrations. The increased levels of bass
produced by the GRIP could cause your turntable to vibrate,
producing unwanted feedback. To avoid this problem, make
sure your turntable is a good distance away from your
speakers. You can take further precaution by installing shock
absorbers on your turntable. These can be found in stores
that sell DJ equipment.

CD players are also notorious for their susceptibility to low­frequency rumble. To prevent your CD player from
skipping, make sure you place it far away from your speakers.

3

17

3

Getting Started

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18

4 A Tour of the GRIP

Front Panel

POWER Button

Press this to turn the GRIP on and off. The button is lit
blue when the GRIP is receiving power. This is a “soft”
power switch that does not actually interrupt power, but
simply suspends operation and turns off the front-panel
LEDs.

INPUT Knob

This knob adjusts the level of the input signal.

INPUT LEVEL LED Meter

This is the green meter that you see on the right side of the
front panel. It displays the average level of the louder of
the Right or Left input signals. It lights from left to right as
the level of the input signal increases.

CLIP LED Indicator

This indicator is the red light located to the right of the
INPUT meter. When lit it indicates that the input signal is
clipping, which means that the signal is too great for the
GRIP to handle. This can cause unpleasant distortion, so if
this indicator lights up, you should lower the level of the
input signal.

Crossover (XOVER) Knob

This knob adjusts the frequency of the GRIP’s two-way
crossover. The GRIP will process only those frequencies
that fall below the one you set with the XOVER knob. This
ensures that the unit processes only the frequencies you
want it to process, leaving the higher frequencies untouched.
The range of this control sweeps from 40 Hz to 160 Hz.

19

4

A Tour of the GRIP

When using the GRIP on
program material – such as
a CD or LP - you should
set the XOVER knob to a
low setting so that the unit
doesn’t process the vocals
or other lead instruments.
For your reference, the
graphs at the right provide
examples of typical
frequency response curves
for bass, kick drums and
vocals.

XOVER OUT Button

This button toggles a high­pass filter on the main
outputs. When you engage
the button, frequencies
falling below the setting of
the XOVER knob are
removed from the main
outputs (but are still
present in the XOVER
output). This allows you to
separately route the sub­bass present in the GRIP’s
signal.

When the XOVER button is not engaged, the main outputs
carry the GRIP’s total output signal, limited only by the LO
CUT knob.

SUB BASS LEVEL Knob

This controls output level of the GRIP’s sub-harmonic
synthesizer. This signal consists of the bass frequencies
produced by the GRIP that were not present in the original
signal.

BASS DRIVE Knob

This knob controls the action of a pair of multi-band
limiters acting on the Bass and Sub-Bass signals. You
should treat it as a tone control. Turning the knob clockwise
gives you a rounder sound with longer sustain, and turning
it counterclockwise gives you a faster, more dynamic sound.

20

A Tour of the GRIP

GAIN REDUCTION LED Meter

The red LED meter displays the amount of gain reduction
applied by the bass limiters. An increase in gain reduction –
by turning the BASS DRIVE Knob clockwise - will cause
the meter to light from right to left.

BASS LEVEL Knob

This knob adjusts the level of the frequencies that fall
below the crossover point set by the XOVER knob, except
for the sub-bass.

BASS LEVEL LED Meter

This meter indicates the level of the GRIP’s main output
signal. As you increase the level by turning the BASS
LEVEL knob clockwise, this meter lights amber from left
to right.

LO CUT Knob

This adjusts the cutoff frequency of a steep (6-pole) high­pass filter, effectively limiting the lowest frequencies that the
GRIP can output. The unit will output only those
frequencies that are higher than the one set with the LO
CUT knob. This knob is useful for protecting your speakers
from ultra-low frequencies that may cause damage.

OUTPUT Knob

This knob controls the level of the GRIP’s total output
signal from both the bass and sub-bass channels.

BYPASS Button

When you activate this button, the audio signal bypasses the
Grip without being processed. This is useful when you want
to compare the processed signal with the unprocessed signal.
This button lights red when you enter BYPASS mode.

4

21

4

A Tour of the GRIP

Rear Panel

INPUT Jacks

The GRIP’s two input jacks give you analog stereo inputs
using TRS balanced 1/4” connectors. If you are using a
mono instrument, plug it into the left input jack.

The nominal input level, with the INPUT knob at 12
o’clock, is +4 dBu (1.23 VRMS). Input impedance is 10
kOhms.

OUTPUT Jacks

These two jacks provide analog stereo output using TRS
impedance-balanced 1/4” connectors. These outputs carry
the total signal from the GRIP, including the sub-harmonic
synthesizer’s channel. If you want to output a mono signal,
use either jack.

The nominal output level is +4 dBu (1.23 VRMS) = -15
dBFS, and the maximum output level is +19 dBu (6.9
VRMS) = -0 dBFS. Output impedance is 150 Ohms.

XOVER OUTPUT Jack

This jack carries the combined bass and sub-bass signals –
as determined by the XOVER Frequency and LO CUT
Frequency knobs.. This jack is a TRS impedance-balanced
1/4” connector, and has the same maximum output,
nominal output and impedance as the OUTPUT jacks.

IEC POWER Jack

Here’s where you plug in the GRIP’s IEC power cord. This
jack is made to accept most IEC power cords. It has a
universal input of 100 – 260 VAC.

22

5 Suggested Settings

LARGE PA: Give those big sub-woofers something to do!

SMALL PA: A little extra bass embiggens the smallest
speakers. Try to match the LO CUT setting to your
speakers’ specified frequency response.

SYNTH BASS/BASS GUITAR: More is better.

BASS EXTENSION: Add clear, natural sub-bass to older
CDs and LPs. Mastering for vinyl meant stripping away the
lowest frequencies. Bring them back.

TUDIO CROSSOVER: Separate the highs and lows for

S

iscreet processing. Try sending the high frequencies to a

d

verb and then mix back in with the dry bass.

re

HEAVY GUITAR: You guitar not have enough “chunk”?

uned down and your strings are too flabby sounding?

T

ass player quit? Try this! Most users will prefer to run the

B

RIP before any effects or distortion.

G

23

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24

6 Troubleshooting

Troubleshooting Index

Symptoms Cause Solution

Unit does not function (no
display or audio).

Unit not plugged in. Make sure the power cord

is connected to the GRIP
and plugged into an
electrical outlet.

Audio distorted, even in
BYPASS.

Output level too high. Turn down master

No sound, level low. Incorrect input/output

Master volume set too low. Change level setting.

Bass not present or too
low.

LO CUT knob setting too

Not enough bass present

BYPASS button engaged. Disengage the BYPASS

Sub-bass signal not
present in main output.

Input level too high. Reduce input level.

volume.

Refer to chapter 3.

connections.

Bass level or sub-bass level

set too low.

high.

in input signal.

XOVER OUT button

engaged.

Change level settings.

Turn LO CUT knob

counterclockwise.

Adjust settings of input

instrument to see if more
bass can be input.

button.

Disengage XOVER OUT

button.

25

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26

A

I

7 Specifications

udio Input

A

Input Stereo b 1/4” TRS jacks

Connectors: alanced

:

150 Ohms

> 108dB
< 0.0033%

D

ll measurements done with

NPUT knob tur
clockwise w
wave

at -1.78 dBu (-1 dBFS)

input. Impedances are

ned fully

ith a 1kHz sine

d at 1 kHz. measure

Nominal Input Level
(Input Knob at
Input Impedance: 10 kOhms

12:00): +4 dBu (1.23 VRMS)

Audio Output

Output C

ominal Output Level: ) = -1

N +4 dBu (1.23 VRMS
dBFS
Maximum Output Level: +19 dBu (6.9 VRMS) = -0
dBFS
Output Impedance:

A c

Signal to Noise Ratio
THD
Frequency Response: 20 Hz – 22 kHz ±1.0 dB

ower Consumption: /50

P 7 W max. (100-240 VAC -60
Hz)

M

Size: 1.75” H x 19.0” W x 6.38”
45mm H x 483mm W x 162mm
D
Rack Spaces: 1 space
Weight: 4 lbs (1.8 kg)

onnectors: 3 balanced 1/4” TRS jacks

udio Performan e

+N:

echanical

27

T

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28

8 Block Diagram

29

Index

4-track, 16
ADAT, 16
amplifier, 16
BASS DRIVE knob, 20
BASS LEVEL knob, 20
BASS LEVEL meter, 20
BYPASS button, 21
CD player, 17
CLIP indicator, 20
connecting the GRIP, 16
controls

BASS LEVEL knob, 20
BASS-DRIVE knob, 20
BYPASS button, 21
INPUT knob, 19
LO CUT knob, 20
OUTPUT knob, 21
POWER button, 19
SUB-BASS LEVEL knob, 19
XOVER knob, 19

XOVER OUT button, 19
digital audio workstation (DAW), 16
DJ setup, 15
effect loop, 16
feedback, 17
front panel, 19
GAIN REDUCTION meter, 20
grounding, 7
high-pass filter, 20
hookup diagram, 15
IEC POWER jack, 22
INPUT jacks, 22
INPUT knob, 19
INPUT LEVEL meter, 20
levels

maintaining proper, 16
live performance, 16
LO CUT knob, 20
mixer, 15, 16, 22
OUTPUT knob, 21
outputs

main outputs, 22

XOVER OUT, 16

XOVER OUTPUT jack, 22
PA system, 16
POWER button, 19
Power cable, 8
R OUT button, 19
rack-mounting the GRIP, 16
rear panel, 22
recording, 16
RMS limiter, 20
safety instructions

English, 7

French, 9

German, 11
specifications, 27
SUB-BASS LEVEL knob, 19
subharmonic synthesizer, 4
subharmonic synthesizer, 22
transients, 16
troubleshooting, 25
turntable

stabilizing, 17
woofer, 15
XOVER knob, 19
XOVER OUT, 16
XOVER OUT button, 15
XOVER OUTPUT jack, 22

31

F

s

r

h

/

s

Warranty / Contact Alesis

lesis Limited Warranty

A

ALESIS CORP
in material and riod of
one (1) year for la
enforceable only by the original reta
For the most effective service, th
ALESIS website at http://www.a
During the warranty period ALE

ALESIS or its authorized se
warranty shall be re
To obtain warranty servic
address and telephone number av
Authorization
service. All i
authori IS or an authorized ALESIS repair fac
postage ckaged. Proof of purchase must be
present le, canceled check or some other positive pr
that the ty period. ALESIS reserves the right to upd
any uni ESIS reserves the right to change or improve de
of the t prior notice.
This w s for damage due to abuse, neglect, alteration
attemp ersonnel, and is limited to failures arising duri
normal workmanship in the product.
THE A U OF ANY OTHER
WARR TATIONS WHETHER EXPRESS OR
IMPLI SPECT TO THE PRODUCT, AND
SPECIFICALLY EXCLUDE ANY IMPLIED
FOR A PARTICULAR PURPOSE OR MERC
IMPLIED WAR an
implied warranty last
IN NO EVENT W
CONSEQUENTIA
FROM THE BREA
INCLUDING, AMONG OTHER THIN ,
DAMAGE BASE THE
PRODUCT, AND, TO THE EX
FOR PERSONAL INJUR
incidental or consequential d
apply to you.
THIS CONTRACT SH S OF
THE STATE OF CAL ICTS
OF LAWS. This warranty gives you
rights required by law which vary from
This war
America or Canada. The terms of this warranty and any obligations of Alesis under
this warranty shall apply only within the country of sale. Without limiting the
foregoing, repairs under this warranty shall be made only by a duly authorized Alesis
service representative in the country of sale. For warranty information in all other
countries please refer to your local distributor.

ORATION ("ALESIS") warrants this product to be free of defects

workmanship for a period of one (1) year for parts and for a pe

bor from the date of original retail purchase. This warranty is

solved as prescribed by law.

Number and instru

nquiries must be accompanied by a description of the problem. All

zed returns must be sent to ALES ility

prepaid, insured and properly pa

ed in the form of a bill of sa

product is within the w

t returned for repair. AL
product at any time withou
arranty does not cover claim or

ted repair by unauthorized p ng

use that are due to defects in material or

BOVE WARRANTIES ARE IN LIE

ANTIES OR REPRESEN

ED OR OTHERWISE, WITH RE

RANTIES. Some states do not allow limitations on how long

s, so the above limitation may not apply to you.
ILL ALESIS BE LIABLE FOR INCIDENTAL,

L, INDIRECT OR OTHER DAMAGES RESULTING
CH OF ANY EXPRESS OR IMPLIED WARRANTY,

D ON INCONVENIENCE OR ON LOSS OF USE OF

IFORNIA WITHOUT REFERENCE TO CONFL

ranty only applies to products sold to purchasers in the United States of

il purchaser and cannot be transferred or ass

e purchaser should register the purchase on the

lesis.com/support/warranty.htm.

SIS shall, at its sole and absolute option, either

uct that proves to be defective on inspection b

y prod

rvice representative. In all cases disputes concerning this

e, the purchaser must first call or write ALESIS at the

ailable on the Alesis Website to obtain a Retur

ctions concerning where to return the unit fo

arran

WARRANTIES OF FITNE
HANTABILITY OR OTHE

GS, DAMAGE TO PROPERTY

TENT PERMITTED BY LAW, DAMAGES

Y. Some states do not allow the exclusion or limitati

amages, so the above limitation or exclusion may n

ALL BE GOVERNED BY THE INTERNAL LAW

specific legal rights, and you may also have o

state to state.

igned.

repair

n

r

oof

ate

sign

SS

on of
ot

y or replace free of charge an

R

ther

or more effective

ervice and product

otices, please update n

egister your GRIP

online at:

ttp://www.alesis.com

upport/warranty.htm

33