DYNACORD L500 2X250W/4Ω POWER AMPLIFIER

The model L 500 is a 2 x 250 Watts Power Amplifier. Linear Precision Series
power amps combine excellent audio performance, modern and innovative
circuit design, meticulous and exceptionally rigid construction, and the highest
levels of operational integrity and reliability with an appropriate and more than
realistic price. The robust steel chassis provides outstanding torsional strength
through L-shaped side panels reaching under the thick aluminium front panel.
Thermal breakers prevent the power supply units from being damaged by thermal
overload. Electronically controlled fans provide sufficient front-to-rear airflow and
a special cool air diverter takes care of thermal stability. The fans? noise-level is
extremely low which provides the possibility for studio use. If necessary, a supplied
air-filter can be mounted behind the front panel ventilation louvres.
 
Features
* Excellent audio performance
* Symmetrical topology
* Ultra-low distortion
* Generously dimensioned power supply units
* Suitable to be operated on loads down to 2 ohms
* Suitable to drive complex loads with phase angles of ± 90 degree
* Extensive protection circuitry
* Unique Back-EMF protection
* Switchable limiters
* Switchable Hi/Lo-Cut filters
* Robust steel chassis
* Exceptional low noise front-to-rear air-flow
* XLR-type inputs and direct-outs
* LED display shows On, In, Out, Limit and Protect
* Highly reliable operation

Specs
* Max. Output Power - into 8 ohms : 2 x 180 W at 1 kHz / THD = 1.0%
* Max. Output Power - into 4 ohms : 2 x 280 W at 1 kHz / THD = 1.0%
* Max. Output Power - into 2 ohms : 2 x 320 W at 1 kHz / THD = 1.0%
* Max. Output Power - into 8 ohms bridged : 1 x 560 W at 1 kHz / THD = 1.0%
* Max. Output Power - into 4 ohms bridged : 1 x 640 W at 1 kHz / THD = 1.0%
* Rated Output Power - into 8 ohms : 2 x 175 W at 20 Hz - 20 kHz / THD = 0.1 %
* Rated Output Power - into 4 ohms : 2 x 250 W at 20 Hz - 20 kHz / THD = 0.1 %
* Rated Output Power - into 2 ohms : 2 x 300 W at 20 Hz - 20 kHz / THD = 0.1 %
* Rated Output Power - into 8 ohms bridged : 1 x 500 W at 20 Hz - 20 kHz / THD = 0.1 %
* Rated Output Power - into 4 ohms bridged : 1 x 600 W at 20 Hz - 20 kHz / THD = 0.1 %
* Frequency Response : 0 dB ..... -1 dB/20 Hz - 20 kHz
* Phase Angle Response : ± 30 degree/20 Hz.....20 kHz
* Maximum Output Level : 45 V / RMS before clipping, no load, ref. 1 kHz / THD = 1%
* Voltage Gain ref. 1 kHz : 26 dB (constant gain option)
* Input Sensitivity : 0 dBu/0.775 V, +6 dBu/1.55 V at rated output / 4 ohms ref. 1 kHz
* Maximum Input Level : +21 dBu / 8.7 V
* Input Impedance active balanced : 20 kohms
* THD at Rated Output : < 0.05 % MBW = 80.0 kHz, f = 1 kHz
* IMD -SMPTE : < 0.01 % 60 Hz, 7 kHz, at rated output
* Signal-to-Noise Ratio : >105 dB at rated output into 4 ohms,
   A-weighted, RMS, input sensitivity +6 dBu
* Attenuation at rated output : > 70 dB f = 1 kHz
* Damping Factor internal 1 kHz : > 300
* DIM 30 : < 0.01 %
* DIM 100 : < 0.01 %
* Slew Rate internal : > 25 V / ?s
* Power Consumption : 300 W 1/8 rated output into 4 ohms
* Width : 483 mm
* Height : 88.1 mm
* Depth : 426 mm
* Weight : 14 kg
 

The DPA252 is built as two channel (Stereo) amplifier, capable of delivering a power of 2 x 250 Watt in stereo mode, or 500 Watt in bridged mono mode. It features various specific functions and advanced protection circuitry which protects against DC malfunctioning, short circuit, overheating and overload.

The signal input connections are accommodated with balanced XLR connectors and signal link through with other amplifiers is possible using the XLR output connectors. The operation mode can be selected between Stereo mode, Bridge mode and Parallel mode. The output connections are accommodated with both Speakon and Euro-Terminal blocks.

• Model name: DPA252
• 8 ohms: 2 x 130 W
• 4 ohms: 2 x 250 W
• 8 ohms Bridge: 800 W
• THD+N:
• Signal / Noise: > 100 dB
• Frequency Response: 20 Hz - 20 kHz
• Power Supply: 110 - 240 V AC / 50 - 60 Hz
• Dimensions (W x H x D): 482 x 44 x 330 mm

Τελικός ενισχυτής 2U ισχύος 2 Χ 500 Watt/4Ω με απόκριση συχνότητας 20Hz - 20KHz. Βάρος 15 Kg. Διαθέτει ρύθμιση ευαισθησίας εισόδου (0,775V/1,0V/1,44V), Limiter και φίλτρα Low pass & High pass για σύνδεση με sub ή δορυφόρο. Διαθέτει εισόδους balanced XLR/JACK και εξόδους ηχείων σε Speakon & Binding post

The LD Systems DP600 Power Amplifier offers an amplifiying level of 2 x 300 W  2 Ohm

Power Output Level R-150 PLUS

STEREO
8ohm(T.H.D 0.05%)  50W+50W
4ohm(T.H.D 0.05%)  75W+75W

BRIDGED MONO
8ohm(T.H.D 0.05%)  50W
8ohm(T.H.D 0.5%)  170W

Frequency Response 20Hz- 20kHz, ±0.5dB

Convection Cooled

SoftStart Protection System

Balanced 10kΩ@0.775V Inputs

Yamaha Power Amplifier - XP1000 2 x 110-Watts, 8-Ohms Stereo, 100-Volt, High Sound Quality,
20Hz-20kHz, High Reliability and High Stability, Light Weight and Compact Design of 2U Size,
High-Pass Filter.

The XP power amplifier series featuring high power, high quality, high reliability and high stability
matches various installation sound systems and provides superior acoustic features even in live
performance applications. The series is equipped with various protection circuits including a circuit
for detecting power-on/off, output protection circuit and DC detection circuit. Various indicators
display the status of the protection system. Indicators include PROTECTION indicator, TEMP
indicator that shows overheating of the heat sink, POWER/STANDBY indicator that shows the
power status, as well as SIGNAL and CLIP indicators for each channel.

APPLICATIONS:
Live Performance 
Churches 
Halls 
Banquet Rooms 
Conference Rooms 
Restaurants
 
5-model lineup ranging from 700W* output to 100W* output *(STEREO 8 ohms). 
High sound quality equivalent to upper-class models with parts and emphasizing
on superior sound. 
While realizing a design that ensures high sound quality, efficiency has been
planned down to the finest details for full achievement of both high-definition sound
and superior value. 
Yamaha's exclusive state-of-the-art high-efficiency amplifier driving technology
EEEngine installed. 
A gain switch that can be changed to +4dBu / 26dB / 32dB has been installed on the
rear panel for compatibility with a wide variety of input levels. 
Light weight and compact design of 2U size for installation in any location. 
Monitor and remote terminals for monitoring and control from a remote location. 
High-accuracy 1dB-step detented attenuator. 
Various terminals and features suitable for professional use. 
Special high-pass filter that enables change of cut-off frequency. 
Equipped with various protection circuits, indicators and stepless low-noise fans. 
Best matches with the digital mixing engine DME64N/24N and Installation series
speakers.
 
Output Power, 8? 100W+100W
S/N Ratio, 20Hz-20kHz 96dB
Idle Power Consumption 20 Watts
1/8 Power Consumption (4?/Pink noise) 170 Watts
Power Bandwidth (half power THD+N=0.5%) 10Hz-40kHz
THD+N 20Hz ? 20kHz, half power 0.1%
Intermodulation Distortion, 60Hz: 7kHz, 4:1, half power 0.1%
Frequency Response RL=8?, Po=1W,HPF=OFF 0dB
Channel Separation, Half power RL=8? 1kHz, ATT. Max input 600? shunt 70dB
Residual Noise Att. min, 20Hz-20kHz (DIN AUDIO) -70dBu
Damping Factor, 8?, f=1kHz 200
Voltage Gain, ATT. max 32dB or 26dB or +4dBu input sensitivity by select switch
Maximum Input Voltage +22dBu
Input Impedance 20k?(balance) 10k?(unbalance)
Controls, Front panel Power switch(push on/push off), attenuator(31position) x 2
Controls, Rear panel Mode switch(Stereo/Bridge/Parallel) x 1, HPF switch x 2,
Gain Select switch x 1
Connectors, Input XLR-3-31 type/ch, Euroblock connector(balance)/ch
Connectors, Output Speakon/ch, 5way binding post x 1
Connectors, Monitor/Remote Dsub15P x 1
Indicators Power/Standby x 1(Green/Orange), Signal x 2(Green), Clip/Limit x 2(Red)
Amplifier Protection Thermal: cut the output(heatsink temp ? 90°C) do not return
automatically
Power Requirements UC: 120V/60Hz, EU: 230V/50Hz, A: 240V/50Hz
Weight 12kg (26.5 Ibs.)
Dimensions (W x H x D) 480 x 88 x 456 mm (18-7/8" x 3-7/16" x 17-15/16“)