Zetta 215 - Receiver Ram Audio - Free user manual and instructions

Product type	Amplifier receiver
Brand	Ram Audio
Model	Zetta 215
Category	Receiver
Number of channels	2 (stereo or bridge)
Power supply	170-265 V AC, 50/60 Hz
Input connectors	Female XLR (balanced/unbalanced)
Output connectors	Speakon
Input attenuators	Detented potentiometers per channel
LED indicators	Signal, Clip, PMS, Protection
Operating modes	Stereo (DUAL) or bridge (BRIDGE)
Protection systems	PMS (power management), ICL (clip limiter), SOA (transistor protection)
Power on	On/off switch with blue LED
Balanced input wiring	Pin 1 ground, pin 2 hot, pin 3 cold
Unbalanced input wiring	Pins 1 and 3 to ground, pin 2 to signal
Maintenance	Clean with a dry cloth, avoid moisture
Safety	Class I device, do not open, service by qualified personnel only
Country of origin	Not specified
Dimensions (W x H x D)	Not specified
Weight	Not specified

Frequently Asked Questions - Zetta 215 Ram Audio

How to connect the amplifier in stereo mode?

Set the selector to DUAL. Connect the input signals to the female XLR connectors of each channel. Connect the speakers to the Speakon outputs respecting polarities. Use the input attenuators on the front panel to adjust the level of each channel.

How to connect in bridge mode (BRIDGE)?

Select mode BRIDGE. Connect the input signal to the female XLR connector of channel A (or C for 4-channel models). Connect the speakers to the +1 and -2 terminals of the output Speakon of channel A (or C). Use the input attenuator of channel A (or C) to adjust the level. Caution: -2 is not ground!

What do the PMS and ICL LEDs mean?

The PMS (Power Management System) LED lights up orange in case of power-up, high temperature, or excessive consumption. The ICL (Intelligent Clip Limiter) LED lights up when the clip limiter is active to protect the speakers.

What to do if the amplifier overheats?

Check that the ventilation paths are not blocked. If overheating persists, reduce the output level or the number of speakers. The PMS system automatically reduces power to protect the amplifier.

How to connect unbalanced signals?

For unbalanced wiring, connect pins 1 and 3 of the XLR connector to ground, and pin 2 to signal. If pin 3 is not connected to ground, you will lose 6 dB (75% of output power).

Can I use the amplifier with only one channel?

Yes, in stereo mode (DUAL), each channel operates independently. You can use only one channel if you wish. Ensure the attenuators of the other channel are at minimum to avoid noise.

How to adjust the output level?

Use the detented potentiometers on the front panel, one per channel. Turn them clockwise to increase the level. The SIGNAL and CLIP LEDs indicate the input level and possible clipping.

What to do if the SIGNAL LED does not light up?

Check that the input signal is present and that the cables are correctly connected. If the LED remains off, the amplifier receives no signal. Also check the attenuator settings.

Does the amplifier have short-circuit protection?

Yes, the SOA (Safe Operating Area) system limits current in case of inadequate load or direct short circuit, thus protecting the output transistors.

How to clean the device?

Disconnect the device before any cleaning. Use a dry, soft cloth. Do not use liquid or abrasive products. Avoid any moisture penetration into the device.

USER MANUAL Zetta 215 Ram Audio

Professional Power Amplifiers

ZETTASeries

210-215-220-236

420-430-440

OPERATION MANUAL

NOTICE D'EMPLOI

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 servicable 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 ^TM , SSP ^TM , ICL ^TM and

QuantaPulse™ are registered trade

marks of C.E. Studio-2 s.l.. All other

names are trademarks of their respec

tive 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

Controls: Where and What?

Signal Input: Female Neutrik XLR Connectors for the amplifier's signal input.

Speaker connectors: Neutrik Speakon to connect the speakers.

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

2.2 Rückplatte

Siehe Fig. 2

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

2.2 Panneau Arriere

Voir Fig. 2

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

1- Ground
2-Signal
3- Ground

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 provide, 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!

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 Problemösung

Correct function: SGNL lights to indicate signal presence.

PMSSCOUIP

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

PMSSGNIP

No Signal: No Input Signal is reaching the amp.

PMSSGNIIP

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.

PMSSGNIIP

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

• The amplifier is in power-on sequence, where output is inhibited until the amp circuits are ready to operate.
• The internal temperatures rise to near thermal shutdown point due to unfavourable operating conditions.
• Excessive current consumption.

PMSTM - Power Management System

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

PMSTM - Power Management System

SSP™ - SOA Sentry Protection

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

Manufactured in the EEC by C.E. Studio-2 s.l.