Grimani Systems Alpha Manuel utilisateur

61 Galli Drive, Suite B |Novato, CA 94949, USA |+1.415.883.1476 |info@grimanisystems.com |www.grimanisystems.com

Alpha Speaker

Installation and Operation Manual

April 26, 2017

Alpha Speaker

Installation Manual

1. Unpack the speaker

a. Place shipping box upright, with UP arrow pointing up.

b. Cut packing tape and slide the top half of the shipping carton up over the speaker.

c. Carefully lay the bottom carton and speaker on the floor, and remove the speaker from the bottom

carton.

d. Look for mounting bracket and cable bag in the bottom carton.

e. Keep the box and packing material in case you need to ship it back for returns, maintenance or

upgrades.

2. Prewire. Power, signal, and Network should be prewired to each Alpha speaker

a. Power: The Alpha is an active speaker with built-in signal processing and amplification. It requires

about 1500 Watts of available AC power in the range from 100V to 250V. We recommend prewiring

one 120V-20A circuit, or a 220 / 240V –15A for each group of three Alpha speakers, with either a

quad box near the three speakers, or a duplex near each speaker.

b. Audio Signal: The Alpha can take three types of audio signals. AES/IP over Cat5 cable; AES over 110

Ohm twisted pair with shield XLR cable; Analog Balanced over twisted pair with shield XLR cable.

Choose which type of signal interface you plan to use, and prewire for it. If in doubt, wire a Cat5 or

Cat 6 cable to punchdown “Keystone”connectors, and an audio twisted pair with braided shield

both to locations near the speaker. Note that even for unbalanced analog audio sources it is best to

use a twisted pair with shield cable. See the connection section below for termination

recommendations.

c. Network signal: The Alpha is controlled and monitored through IP networking. You can prewire

with either Cat5, Cat5e, Cat6, Cat6a standards. In all cases prewire using “Keystone”punchdown

connectors at wall plates or rackmount locations near the source and the speaker, using EIA T568B

standard. Test the connection using a certification meter to assure quality of connection and

bandwidth. The last interface should be accomplished with factory terminated and certified patch

cables, such as the ones supplied with the speakers. Note that if you are choosing to feed the

speakers with AES/IP over Cat5, through the Grimani Systems DAI1 interface unit, you will use only

one connection for digital audio and network.

3. Mounting Bracket. The Alpha is designed to be installed on a wall, using the supplied hanging bracket.

a. Place the speakers correctly in the room. Set the speaker position on the wall

based on several factors: Position spread relative to the listener; position

relative the screen edge or center; boundary reflection conditions. Set the

height such that the middle of the waveguide is 6 inches above seated ear

height, or at the middle of the screen. Grimani Systems Technical Support

can assist with determining the best position upon request.

b. The top of the bracket plate will be 20 5/8” inches (524mm) below the

top of the waveguide.

Stud

c. Mark four hole locations for the mounting bracket, based on a. and b. above. Use the bracket as a

template, and make sure that it is straight and plumb by using a bubble level.

d. Choose appropriate fasteners. The Alpha weighs 65 lbs (32kg), and each fastener will need to be

rated for 30 pounds (15kg) each, to account for vibration. For sheetrock walls, we suggest using

EZAnchors and their associated screws. For Concrete walls, we suggest using good quality wall

anchors and screws. For plywood surfaces, wood screws in a size 10 (6mm) and above will work

well.

e. Holding the speaker from the top bar and the top lip of the woofer tunnel, pick it up and carefully

place the two bars into the slots of the hanging bracket. Make sure that the speaker is centered and

that the fingers of the hanging brackets are straight.

f. Speaker aiming: The speaker can be aimed up or down by selecting the right length of stud

between the hanging bars and the speaker back panel (see picture above). Alphas are typically

shipped with a smallest stud at the bottom, and the next size up at the top, for a down angle of 5

degrees, which matches most installation requirements. You can custom-order the speaker angle

setting, or you can change the studs to adapt to the installation conditions. Contact Grimani

Systems to order the studs.

4. Connections

a. Power: The Alpha ships with a 9 foot (2.7m) long locking detachable IEC power cable. The

receptacle is on the connector plate at the bottom of the speaker. Plug the cable there, then to the

mains outlet. To remove the ICE cable from the speaker, pull back the red locking pin before easing

out the plug. After powering up the speaker, it will go through a few seconds of start-up sequence.

There is no standby switch.

b. Audio signal. Plug in the audio feed:

- For AES-IP over Cat5 cable into either of the two network ports, labeled “ETH – AESOP”.

- For AES over twisted pair cable with shield, terminate the cable to a male XLR plug, using Pin 2 for

+, Pin3 for -, and Pin 1 for ground/shield (See Appendix 1). Connect the XLR plug into the AES

input, labeled (LABEL). It is the female one with a white ring around it. Note that Cat5 cables can

be used to transmit AES digital audio signals with good success. Be sure to use one same-colored

pair per speaker feed.

- For Analog balanced over twisted pair cable with shield, terminate the cable to a male XLR plug,

using Pin 2 for +, Pin3 for -, and Pin 1 for ground/shield (See Appendix 1). Connect the XLR plug

into the Analog input, labeled (LABEL). It is the female one without a ring around it.

- For Analog unbalanced sources, it is best to pre-wire with twisted pair with shield. On the source

side, connect the + signal to the + wire (usually Red) of the pair, and connect the source ground

to the –wire (usually Black) of the pair. On the speaker side, terminate the cable with a male XLR

plug, with Pin 2 for the + wire, Pin3 for - wire, and Pin 1 for the shield of the wire (See Appendix

1). If you used regular coaxial wire, from the source, terminate the wire to a Male XLR plug with

Pin 2 for the + wire, Pin3 and Pin 1 for the shield of the wire. If there is a hum loop, try

disconnecting Pin 1 on the XLR plug. If the coaxial wire is already terminated with and RCA

connector, you can use a female-to-male XLR converter plug.

You can also use Cat5 cable with a balancing converter unit such as the MuxLabs 500028, as

shown in Appendix 2, or the Audio Control BLD-10.

Power In

AES Digital

Audio In

AES/IP Network

In/Out

Analog

Audio In

Analog Audio

through Out

Analog Audio

Processed Out

c. Network signal:

- If you use the audio AES/IP over Cat5, through the Grimani Systems DAI1 interface unit, you will

use only one connection for digital audio and network. No need for a further network connection.

Assuming that you prewired to a wall-mounted or rack-mounted keystone punch-down RJ45

receptacle, connect a premade factory-terminated and certified patch cable, such as the one

supplied with the speaker, into either of the two network ports, labeled “ETH – AESOP”. If you

didn’t prewire to a punch down receptacle, carefully terminate the network cable with a male

RJ45, using EIA T568B standard, and ensure proper connection and strain relief. Test the

connection with a certification tester to ensure proper connectivity.

d. If you use either the digital audio AES over twisted pair audio signal, or the analog audio signal, you

will connect the network feed into either of the two network ports, labeled “ETH – AESOP”.

e. The other network port can be used as network switch output to another networked product.

f. The Alpha has an analog audio output over Cat5 that is fed out of the #4 signal processing chain of

the DSP unit. It can be full-bandwidth to feed another speaker, low-pass-filtered to feed a

subwoofer, or whatever other processing is required and programmed into the DSP unit.

Connection patch cables are available through Grimani Systems Technical Support. If you wish to

terminate these yourself, the connection is as follows:

- Terminate a Cat5, Cat5e, or Cat6 cable to an RJ45 male plug, carefully ensuring that the insulation

and wires are properly punched through.

- Terminate the other side of the CatX cable, using Brown for +, and Brown with White stripe for -. If

terminating to XLR, use + for Pin 2, and –for Pin 3. There is no shield drain.

5. Settings

a. AC Voltage is automatically set for a range from 100V AC to 250V AC. There is nothing to set.

b. Audio Input Mode Select. The Alpha is shipped in the following default mode: XLR/IP over Cat5 with

Analog backup. There is no need to change the input setting if you are going to use either of these

two inputs. If you want to use the AES over twisted pair into the XLR input, you can switch the input

mode by pressing the input button on the connector plate at the bottom of the speaker. Monitor

the status by looking at the XXX LEDs.

c. EQ preset. The Alpha ships with a response curve that is voiced for the most typically neutral

voicing in-room. This is mostly flat anechoic response for both the axial and sound power frequency

response. This is stored into Preset 1. Preset 2 is the same as Preset 1 with 3dB more High

frequency energy. Preset 3 is the same as Preset 1 with 3dB less High frequency energy. You can

switch between the presets by pressing the preset button on the connector plate at the bottom of

the speaker.

d. Input Volume. Set the volume knob to maximum gain.

e. Input EQ. Set to ON.

f. DSP programming. The Alpha speaker includes a DSP engine with more than 60 bands of response

tailoring, plus several other signal processing functions. These are programmed through a

computer application, and requires advanced control by a factor trained professional. Contact

Grimani Systems for DSP programming and system calibration services.

Power In:

Auto

Voltage

Sensing

EQ Preset Select

Input

Volume

Analog Audio

through Out

Audio Input

Mode Select

Input EQ

6. Remote Monitoring

The alpha speaker can be programmed for automated self-diagnostics and remote warnings. Typical

auto-test and reporting functions include Power Status, Signal voltage limits, Temperature, Mounting

angle, and many more. Any failure, or performance that falls outside of specified limits, will result in

emails sent to several programmed addresses, indicating the nature of the failure. The speaker can also

be tested and verified from a remote location. For both of these functions you will need to dedicate a

small Windows computer to be left enabled on the same network as the speaker. It will need to run the

Grimani Systems Armonia control application as well as a remote desktop application. Both of these

can be set up by a Grimani Systems factory technician.

7. Limited Warranty

The Alpha is warrantied to be free of manufacturing defects for a period of two years from the date of

purchase. This limited warranty does not apply to failures due to misuse, excessive sound pressure,

damage from handling and carriage, or any other defects that are outside the control of Grimani

Systems, LLC. Any warranty claim will need to be made directly with Grimani Systems, or through one

of its authorized dealers. An RMA number will need to be issued before any return is authorized.

Appendix 1

Balanced XLR Wire connection

Unbalanced to Balanced Analog Wire connection

Appendix 2

MuxLab 500028 Wiring Diagram

For use in driving unbalanced signals to XLR inputs of speakers

One Balun can be used to drive two speakers

From White

RCA Input

XLR Male to

speaker 1 input

Pin 3

Pin 1

Pin 2

Pin 3

Pin 1

Pin 2

XLR Male to

speaker 2 input

Cat5

Cable

From Red

RCA Input

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