Extron ASA 304 Handleiding

Extron Receiver ASA 304

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ASA 204 and ASA 304 • User Guide

About the ASA Series

The Extron ASA series high-performance audio summing ampliﬁers convert stereo audio signals into balanced or

unbalanced mono signals. The series consists of the following two models:

• ASA 204 — The ASA 204 has four independent active summing amps with four pairs of RCA connectors for

unbalanced line level stereo audio inputs. The unit has captive screw connectors for four balanced or unbalanced

mono outputs. Because of its input/output configuration, the ASA 204 can also function as an unbalanced to

balanced audio converter.

• ASA 304 — The ASA 304 has four independent active summing amps with four 5-pole captive screw connectors

for balanced or unbalanced line level stereo audio inputs. The unit has captive screw connectors for four balanced or

unbalanced mono outputs.

The ASA 204 and ASA 304 include an external 12V power supply that accepts 100-240VAC input.

Features

• Four, independent active audio summing amplifiers in a single enclosure

• Stereo inputs on RCA connectors, mono output on captive screw connectors

• Converts stereo audio to balanced or unbalanced mono audio

• ±6 dB output gain switch

• Rack-mountable 1U, quarter rack width metal enclosure

• Extron Everlast Power Supply (included) is covered by a 7-year parts and labor warranty

Installation and Operation

Mounting the ASA 204 and ASA 304

The ASA 204 and ASA 304 can be set on a table, or mounted on a rack shelf, under a desk or tabletop, or on a projector

mount.

Tabletop placement

Attach the four provided rubber feet to the bottom of the unit and place it on a convenient tabletop location.

Rack mounting

For optional rack mounting, do not install the rubber feet. Mount the ASA on a 19” 1U rack shelf or a standard universal

1U rack shelf. On the standard rack shelf, the ASA mounts in one of four locations to the rear of the rack or in one of four

locations to the front of the rack.

1. Remove rubber feet if they were previously installed on the

bottom of the ASA.

2. Mount the ASA on the rack shelf, using two 4-40 x 3/16”

screws in opposite (diagonal) corners to secure the amplifier

to the shelf.

3. Install blank panels or other units on the rack shelf (see the

image on the right).

4. Attach the rack shelf to the rack using the supplied bolts.

NOTE: Most 1U rack-mountable Extron products can be

mounted on the standard shelf.

ASA 204 and ASA 304 • User Guide (Continued)

ASA 204/ASA 304 Front Panel Features

Power LED — Lights to indicate that the ASA is on.

Figure 1. ASA 204 and ASA 304 Front Panel

ASA 204/ASA 304 Rear Panel Features and Cabling

POWER

12V

.2A MAX

STEREO INPUTS

MONO OUTPUTS

BAL

UNBAL

SPARE

QUAD AUDIO

SUMMING

AMPLIFIERS

ASA

204

1 2

STEREO INPUTS

BAL

UNBAL

SPARE

MONO OUTPUTS

ASA

304

L R

POWER

12V

.2A MAX

QUAD AUDIO

SUMMING

AMPLIFIERS

L R

1 2

Figure 2. Figure 3. ASA 204 Rear Panel ASA 304 Rear Panel

Input Connector

Output gain DIP switch

Output Connector

Power connector

Balanced dio OutputAu

Tip

Ring

Tip

Ring

Slee

ves

Unbalanced dio OutputAu

Tip

No Ground Here

Tip

Slee sve

L R

Unbalanced dio InputBalanced dio Input AuAu

Tip

Ring

Tip

Ring

Slee

ves

Tip

Sleeve

Tip

L R

Do not tin the wires!

RCA Connector

Slee ( )ve

Ring(R)

Tip(L)

Wire the audio input and output connectors as shown at

right. Use the supplied tie wrap to strap the audio cable

to the extended tail of the connector.

ATTENTION:

• Connect the sleeve to ground (Gnd). Connecting the sleeve to a negative (-) terminal will damage the audio

output circuits.

• Connectez le manchon à la borne de terre (Gnd). Connecter le manchon à une borne négative(-) endommagera

les circuits de la sortie audio.

• For unbalanced outputs, do not connect wires to the “-” poles (see the Extron Audio Wiring Card).

• Pour les sorties asymétriques, ne connectez pas de câbles aux pôles « - » (voir le Audio Wiring Card d’Extron).

• The length of exposed wires is . The ideal length is 3/16 inch (5 mm).critical

• La longueur des câbles exposés est lorsque l’on entreprend de les dénuder. La longueur idéale est primordiale

de 5mm (3/16inches).

Output gain DIP switch — Use this switch to set the audio output gain level.

Gain levels available via the switch vary depending on whether both inputs are receiving signals, and on the output

wiring, as shown in the table below.

Input Channel Output Output DIP Switch Settings

Left Right Wiring Unbalanced Balanced

signal signal balanced +9dB +3dB

signal —— balanced +3dB -3dB

—— signal balanced +3dB -3dB

signal signal unbalanced +3dB -3dB

signal —— unbalanced -3dB -9dB

—— signal unbalanced -3dB -9dB

— An external 12 V power supply is included with the unit. Plug it into this 2-pole captive screw Power connector

connector. Wire the connector as shown below.

Rear Panel

Power Receptacle

DC Power Cord

Captive Screw

Connector

Ground

all devices.

External

Power Supply

(12 VDC, 0.5 A max.

)

– Return

+12 VDC input

Ridged

Smooth

Figure 4. Rear Panel 12 VDC Power Connector

CAUTION: The DC output cables must be kept separate from each other while the power supply is plugged in.

Remove power before wiring

AVERTISSEMENT : Les câbles de sortie CC doivent être séparés les uns des autres tant que la source

d’alimentation est branchée. Coupez l’alimentation avant d’effectuer les raccordements.

ATTENTION:

• Do not connect power to the amplifier until you have read the ATTENTION notifications.

• Ne branchez pas l’alimentation au l’amplificateur avant d’avoir lu les mises en garde « ATTENTION ».

• Always use a power supply supplied or specified by Extron. Use of an unauthorized power supply voids all

regulatory compliance certification and may cause damage to the supply and the end product.

• Utilisez toujours une source d’alimentation fournie ou recommandée par Extron. L’utilisation d’une source

d’alimentation non autorisée annule toute certification de conformité réglementaire et peut endommager la

source d’alimentation et l’unité.

• If not provided with a power supply, this product is intended to be supplied by a power source marked

“Class 2” or “LPS” and rated at 12VDC and a minimum of 0.5A.

• Si le produit n’est pas fourni avec une source d’alimentation, il doit être alimenté par une source

d’alimentation de classe 2 ou LPS, avec une tension nominale 12 Vcc, 0,5 A minimum.

Product specificaties

Merk:	Extron
Categorie:	Receiver
Model:	ASA 304
Kleur van het product:	Grijs
Gewicht:	300 g
Breedte:	109 mm
Diepte:	76 mm
Hoogte:	43 mm
Gewicht verpakking:	790 g
Connectiviteitstechnologie:	Bedraad
Afmetingen verpakking (BxDxH):	181 x 241 x 62 mm
Audio-ingang (L, R):	4
Bedoeld voor:	Optreden/podium
Audio (L,R) out:	4
Temperatuur bij opslag:	-40 - 70 °C
Luchtvochtigheid bij opslag:	10 - 90 procent
Audio-uitgangskanalen:	4.0 kanalen
Frequentiebereik:	20 - 20000 Hz
Signaal/ruis-verhouding:	90 dB
Totale harmonische vervorming (THD):	0.03 procent
AC-ingangsspanning:	100-240 V
AC-ingangsfrequentie:	50 - 60 Hz
Bedrijfstemperatuur (T-T):	0 - 50 °C
Relatieve vochtigheid in bedrijf (V-V):	10 - 90 procent
Code geharmoniseerd systeem (HS):	85184000
Piekvermogen per kanaal:	- W
Synchronisatie ingangsimpedantie:	23000 Ohm
Output impedance:	100 Ohm