Zetta 430 - Receiver Ram Audio - Free user manual and instructions

Product Type	Receiver (power amplifier)
Brand	Ram Audio
Model	Zetta 430
Power Supply	170-265 V AC, 50/60 Hz
Electrical Class	Class I (with ground)
Number of Channels	4 channels
Operating Modes	Stereo (DUAL) and Bridge (BRIDGE)
Input Connectors	Female XLR (Neutrik) for balanced or unbalanced signals
Output Connectors	Speakon for speakers
Input Level Adjustments	Independent detented attenuators per channel
LED Indicators	SIGNAL (green), CLIP (red), PMS (orange), Power (blue)
Protection Systems	PMS™ (Power Management System), ICL2™ (Intelligent Clip Limiter), SOA (Safe Operating Area Protection)
Ventilation	Natural convection (do not block ventilation paths)
Maintenance and Cleaning	Unplug before cleaning. Use a dry cloth. Do not open the device.
Safety	Do not expose to rain or moisture. Risk of electric shock. Refer servicing to qualified personnel.

Frequently Asked Questions - Zetta 430 Ram Audio

What are the operating modes of the Zetta 430?

The Zetta 430 can operate in stereo (DUAL) or bridge (BRIDGE) mode. The selector is located on the rear panel.

How to connect speakers in stereo mode?

Select DUAL mode, connect the input signals to the female XLR connectors, then connect the speakers to the Speakon connectors respecting polarity.

How to use bridge (BRIDGE) mode?

Select BRIDGE mode, connect the input signal to channel A (or C for 4 channels), and connect the speakers to the Speakon of the corresponding channel (terminal +1 to positive, -2 to negative). Note: the - is not ground.

What does the orange PMS indicator mean?

The orange PMS indicator indicates that the power management system is active. This may be due to overheating, excessive current draw, or inadequate impedance.

How to interpret the LED indicators on the front panel?

The green SIGNAL LED indicates signal presence. The red CLIP LED indicates clipping. The orange PMS LED indicates active protection. The blue POWER LED indicates the device is powered on.

What is the required power supply voltage?

The device operates on a mains voltage of 170 to 265 V AC, with mandatory grounding (grounded outlet).

Can I use unbalanced cables with the XLR inputs?

Yes, but to avoid a 6 dB loss, you must connect pin 3 to ground (solder pins 1 and 3 together). Otherwise, the output power will be reduced by 75%.

What to do if the amplifier overheats?

Check that the ventilation paths are not obstructed. The device may automatically reduce its power via the PMS system to prevent thermal shutdown.

How to clean the device?

Unplug the device before any cleaning. Use a soft, dry cloth. Never use solvents or liquid products.

Where can I find the full manual?

The full manual is available for free download in PDF format at notice-facile.com. You can also request a translation into your language.

USER MANUAL Zetta 430 Ram Audio

Professional Power Amplifiers

ZETTASeries

210-215-220-236

420-430-440

RAM Audio ZETTA Series MIN PONES Z440

OPERATION MANUAL

NOTICE D'EMPLOI

BEDIENUNGSANLEITUNG

SAFETY PRECAUTIONS

SICHERHEITSHINWEISE

AVERTISSEMENTS

WARNING:

ACHTUNG!:

RÈGLES DE SÉCURITÉ:

The exclamation point inside an equilateral triangle indicates the existence of internal components whose substitution may affect safety.

The lightning and arrowhead symbol warns about the presence of uninsulated dangerous voltage.

To avoid fire or electrocution risk do not expose the unit to rain or moisture.

To avoid electric shock, do not open the unit. No user serviciable parts inside. In the case of disfunction, have the unit checked by qualified agents.

Class I device.

VORSICHT

0 Safety Precautions

1 General Information

1.1 Introduction
1.2 Main Characteristics

2 Controls: Where and What?

2.1 Front Panel
2.2 Rear Panel

3 Installation and Operation

3.1 Connections
3.1.1 Dual Channel Mode
3.1.2 Bridge Channel Mode
3.2 Troubleshooting

4 Technical Specifications

4.1 Protection Systems
4.2 Data

©2014 by C.E. Studio-2 s.l.

Pol.Ind. La Figuera

C/Rosa de Luxemburgo n°34

46970 Alaquas - Valencia - SPAIN

Phone: [phone]

Fax: [phone]

http://www.ramaudio.com

e-mail: [e-mail]

P-5435-634 QXPDQXDoc 7/14

RAM Audio ^® , PMS ^™ , SSP ^™ , ICL ^™ and QuantaPulse ^™ are registered trademarks of C.E. Studio-2 s.l.. All other names are trademarks of their respective companies.

1.1 Introduction

The ZETTA Series, is the result of an in-depth study, in order to reach the best compromise between economy and performances, taking advantage of latest improvements in automated mixed surface mount and through hole electronic assembly.

ZETTA Series are a project based on an up-side-down mono-block approach offering an all-in-one power module that contains the entire amplifier assembly. Simplicity and effectiveness run hand by hand through the entire design to obtain an effectively skilled and workable product.

The last generation QuantaPulse ^™ switching power supply allows to reach a new level of refined sensing and control of the power flow.

1.2 Main Characteristics

• Unmatched audio quality hi efficiency Class H design
• 2/4 Channels models from 1000W up to 4000W
• Ultra light weight 6kg, compact package 25cm deep
• Last generation QuantaPulse™ switch mode power supply
• Power Management System (PMS™) and Clip Limiter (ICL™)
• Up-side-down design to avoid fan dust accumulation
• Industry standard Neutrik® XLR and Speakon® connectors
• Comprehensive protection set (ICL, PMS, SSP, turn-on, Temp, DC....)
  • Detented sealed potentiometers
• Dual or bridge mode operation
• Temperature controlled, back to front cooling fan

Controls: Where and What?

1 Signal attenuation level control knobs: Permit independent control of each channel's attenuation (21 steps).
2 SIGNAL: This LED indicates presence of signal at the inputs. PMS : LED indicating PMS in operation (see page 11). CLIP: LED indicating Intelligent Clip Limiter in operation.
3 Main Power Switch: Position I: Connects the amplifier's current feed. (Blue LED on). Position O disconnects the Power.

2.1 Frontplatte

Siehe Fig. 1

SGNL PMS CLIP SGNL PMS CLIP SGNL PMS CLIP SGNL PMS CLIP SGNL PMS CLIP ON POWER LEVEL CH-A LEVEL CH-B LEVEL CH-C LEVEL CH-D 2 1 3

① on off MAIN POWER 3

See Figure

1 Signal Input: Female Neutrik® XLR Connectors for the amplifier's signal input.
2 Speaker connectors: Neutrik® Speakon to connect the speakers.
3 Dual / Bridge Operation Selection Switch. To control the level in Bridge mode use the CH-A level knob.

Mains Power Cord: to connect the amplifier to the mains network. The colour code is:
Blue: Neutral
Brown: Live, single phase
Yellow-green: Protective Earth

Siehe Fig.

Mains Power Cord: to connect the amplifier to the mains network. The color code is:
Blue: Neutral
Brown: Live, single phase
Yellow-green: Protective Earth

Voir Fig.

Mains Power Cord: to connect the amplifier to the mains network. The color code is: Blue: Neutral Brown: Live, single phase Yellow-green: Protective Earth

Rear Panel

Installation and Operation

The Power switch must always be on the "Off" position before plugging the amp to a properly earthed mains socket (170-265V AC). The colour code is:

Blue: Neutral

Brown: Live, single phase

Yellow-green: Protective Earth

The input signal fed to the amplifier can be either balanced or un-balanced. The drawing below describes both ways to wire an XLR connector for the purpose.

Balanced Signal: Connect pin 1 to Ground, pin 2 to Signal + (hot) and pin 3 to Signal - (cold).

Unbalanced Signal: Connect Pin 1 to Ground, pin 2 to Signal and pin 3 to Ground.

3.1 Anschlüsse

Brown: Live, single phase

Yellow-green: Protective Earth

Brown: Live, single phase

Yellow-green: Protective Earth

Important!: If a connection is done with a un-balanced line and pin 3 on the XLR is not connected to ground, a 6 dB loss occurs in the line and only a quarter of the amplifier power is produced.

The amplifiers provides, for each channel, a female XLR Connector (Signal Input) paralleled to a male XLR to daisy chain several amplifiers with the same signal line (LINK).

Installation and Operation

The amplifier can operate on two different configurations: DUAL, or BRIDGE. The connections for the two modes are different.

3.1.1 DUAL Channel Mode

See Figure 3

• Set the Amplifier Mode to "DUAL".
• Connect the signal lines to the female XLR connectors on all channels.
• Connect the speakers' lines to the corresponding Speakon on the amp respecting the polarity.
• Use the level control knob on the front panel to adjust each channel independently.
• Each signalling LED group will show its corresponding channel status.

3.1.2 BRIDGE Channel Mode

See Figure 4

• Set the configuration mode to "BRIDGE"
• Connect a signal line to input female XLR Channel "A" (or Ch-C in 4 channel models).
• Connect the speaker line to the Channel A Speakon (or Ch-C in 4 channel models) wired to +1 and -2. In this way pin +1 is positive.
• Use Channel-A (or Ch-C in 4 channel modes) control knob to adjust the amp's output.
• The signalling LED groups will show the single channel status.

WARNING! The “-” pins, do not have to be Ground!

ACHTUNG! The “-” pins, do not have to be Ground!

Pure electrical circuit lines without any symbols

4

Bridge Mode

2 Ch models

Diagram showing audio connection with speaker, speaker fan, and connector pinout for a device

3
Dual Channel 4 Channel models

Pure electrical circuit lines without any symbols

4
Bridge Mode 4 Channel models

Pure electrical circuit lines without any symbols

Bridge + Dual Mode 3 Channels Mode

Electrical wiring diagram showing connections between speaker, fan, and panel with labeled components

Installation and Operation

In the event of incorrect connection or misfunctioning, the amp will activate one or more of its LED to warn about the problem.

3.2 Problemlösung

Correct function: SGNL lights to indicate signal presence.

ICL: The Intelligent Clip Limiter is operating (see page 10).

No Signal: No Input Signal is reaching the amp.

Overheating: The amplifier has reached the maximum operational temperature. Most common cause is: the normal air flow is blocked, accumulated dirt, dust or object leaning against the grill. Check and clean periodically.

PMS: Several causes can trigger this LED, most common are:

This is a complete set of protections that monitors the main amp parameters (load status, signal input, temperature, current, etc.) in order to draw from the power supply only the precise amount of current required to maintain safe operation during hazardous or extreme working conditions.

This system controls the amount of power that the amp delivers under three basic circumstances:

1.- The power-on sequence, where output is inhibited until the amp circuits are ready to operate. This routine is repeated at every restart, not just when the power switch is activated.
2.- When internal temperatures rise to near thermal shutdown point due to unfavourable operating conditions. Here the system takes control, restricting current so as to maintain operational continuity at the precise power level which the amp is capable of withstanding at that particular moment.
3.- Excessive current consumption. This event only occurs either under laboratory conditions (long term sinusoidal signal testing with dummy loads) or, for example, in field applications in conditions of prolonged acoustic howl-round. Here PMS takes control to avoid any damage to the speakers and to prevent the mains breaker from tripping or the fuses blowing.

ICL2 ^™ - Intelligent Clip Limiter

The RAM Audio ICL2 is an anticlip system to avoid speaker failure and provide more acceptable sound quality even when clipping occurs. With the ICL2 system you don't lose the music "punch" but the speakers are kept under control.

SSP™ - SOA Sentry Protection

SOA Sentry protection effectively limiting the power that the amp could deliver into an incorrect load or to a direct short-circuit. This avoids power transistor failure.

PMS™ - Power Management System

SSP™ - SOA Sentry Protection

SSP™ - SOA Sentry Protection

Technical Specifications

Technical Specifications

	Z-210 Z-215 Z-220 Z-236 Z-420 Z-430 Z-440
Max. Output Power
@ 2Ω	2x 500 W	2x 750 W	2x 1000 W	2x 1800 W	4x 500 W	4x 750 W	4x 1000 W
@ 4Ω	2x 400 W	2x 700 W	2x 1000 W	2x 1750 W	4x 400 W	4x 700 W	4x 1000 W
@ 8Ω	2x 240 W	2x 450 W	2x 650 W	2x 950 W	4x 220 W	4x 450 W	4x 630 W
Bridge @ 4Ω	1000 W	1500 W	2000 W	3600 W	2x 1000 W-	2x 1500 W	2x 2000 W
Bridge @ 8Ω	800 W	1400 W	2000 W	3500 W	2x 800 W	2x 1400 W	2x 2000 W
Frequency Response
Power Bandwidth ±0.25dB			20Hz-20kHz
Phase Response
@ 1 watt 20Hz-20kHz			±15 deg
Total Harmonic Distortion
20Hz-20kHz			<0.05%
Intermodulation Distortion
SMPTE			<0.05%
Damping Factor
20-500Hz @8Ω			>500
Crosstalk
20Hz-20kHz			>75dB
Voltage Gain			32dB
Sensitivity
Rated Power (26/32/38dB Gain)	1.1 V	1.5 V	1.8 V	2.2 V	1.1 V	1.5 V	1.8 V
Signal-to-Noise Ratio
20Hz-20kHz	101dBA	103dBA	104dBA	105dBA	101dBA	103dBA	104dBA
Required AC Mains
Operating Voltage (50Hz-60Hz)			170V-265V AC
Power On Idling (@230V)	0.5 A	0.5 A	0.5 A	0.5 A	0.5 A	0.5 A	0.5 A
1/8 Rated Power (@4 ohm)	3.5 A	4 A	5 A	10 A	7 A	8 A	10 A
Dimensions
W x H x D (mm)			483x88.9x254
W x H x D (inches)			19x3.5x10
Weight
Net (Kg-Lbs)	5-11	5-11	6-26.5	12-26.5	12-26.5	12-26.5	12-26.5
Protections
Soft-start, Turn-on Turn-off transients, Over-heating, DC, RF, Short-circuit, Open or mismatched loads, ICLTM, PMSTM and SSPTM

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