Introduction; Description And Technical Specifications; Main Features - DAD FZ10004 User Manual

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- 1 - INTRODUCTION

1.1 DESCRIPTION AND TECHNICAL SPECIFICATIONS

FZ10004 is a 4ch amplifier capable to deliver 4x2500W @2Ohm and 4x2100W @4Ohm, in 2U rack mount
only.
These features make it ideal for professional full-range speakers and in multi-amplified system character-
ized by wide dynamics and high performance.
• The FZ amplifiers series uses the technology of amplification in Class I with SMPS power stage.
• The operation in Class I is based on a continuous and automatic adjustment of the value of the supply
voltage of the final stage. This optimizes the efficiency up to 85%, reducing the weight and heat dis-
sipation comparing with other amplifiers which deliver same output.
• The models of FZ serie are able to operate with loads from 2Ohm and are equipped with an extensive
set of protection circuits to satisfy the higher reliability parameters with high quality profile for fixed
and mobile sonorizations.

1.2 MAIN FEATURES

The amplifier incorporates a number of sophisticated technologies to ensure the best possible perform-
ance and many years of reliable operation. Familiarizing yourself with these technologies will prove in-
valuable in setting up and optimizing your loudspeaker system.
Class I amplifier Continuos and Automatic Adjustment Power Supply
Class I technology combines the exceptional efficiency of a Class D amplifier with the high sonic quality
associated with Class B designs. Class I also incorporates the same basic concepts behind Class H designs,
but here they are refined and pushed to a higher level to achieve greater efficiency.
The Class I output sections work in concert Continuos and Automatic Adjustment Power Supply to create
a superior overall power amplifier topology. Ensures stable, full output power over an extremely wide
range of mains voltage levels. Sagging or fluctuating mains voltage will not affect the power output de-
livered to the loudspeakers.
Amplifier gain
For greater flexibility in system Integration, amplifier allow gain adjustment from +23dB to +44 dB in 3dB
steps. This feature accommodates any combination of input device and loudspeaker type.
For example, if the input signal is weak, the gain can be boosted to maintain maximum power output
while avoiding a poor signal-to-noise ratio. This gain adjustment feature makes it easier to achieve an
optimal balance between headroom and noise floor.
Voltage Limiter (VL)
The Voltage Limiter (VL) feature allows user adjustments that determine maximum voltage output, thus
matching the amplifier to the connected speaker load. Regardless of load impedance, the VL feature can
be set to ensure that neither temperature nor current limitations are exceeded before reaching the de-
sired voltage threshold.
Protection and performance optimization
Appropriate and reliable power amplification is vital to any audio system. Inadequate or faulty power
amplification could cause damage to the loudspeakers or in some cases to the power amplifiers them-
selves. To prevent any damage or costly service interruptions, the amplifier offer advanced features to
protect both internal circuits and any connected loads. These features even protect the mains fuse that,
in extreme cases, could be overloaded. Following are short descriptions of standard built-in protection
features:
FZ10004