The Next Stage Of Amplifier Evolution

Transcript

f A o e g a t xt S The Ne Shenzhen Redx Audio Visual Technology CO., LTD. Room 3B, Building D2, TCL Science Park, No.1001 Zhongshanyuan Road, Nanshan District, Shenzhen, Guangdong, China Official website: www.redxaudio.com Tel: +0086 755 2692 2283 Product specifications may be altered without prior notice. Please kindly refer to the official website for more information. Copyright 2016 RedX All Rights Reserved. olutio v E r e i f mpli n Contents 003 004 005 About Redx Corporate Group Inventor Profile About SSA Technology 009 014 017 Technology Features Application Advantages Single-Stage High-Efficiency Amplifier Established in Hong Kong, the Redx Group holds a number of patents relating to power and energy conversion technology. Leading Redx is Founder / Chairman and CTO Jonathan Chen, a world-renowned Innovator in the field of power electronics. Jonathan has dedicated more than 35 years to research and development and in 2010 he invented and patented the single-stage inverter for energy conversion, which resulted in Class SSA ® –a new stage in the evolution of high quality audio amplifier technology. Demonstrating a meticulous drive for perfection, Jonathan and his team of dedicated engineers have improved and refined the SSA® technology leading to more than 20 patents worldwide. 03/04 About Redx Corporate Group Inventor Profile The Redx Group is represented worldwide with an HQ in Hong Kong, R&D offices in Dongguan and Brisbane and Sales/Support offices in Dusseldorf, Singapore and Shenzhen. Redx Audio-Visual is the division of the Redx Group tasked to develop commercial applications for SSA® technologies in the Professional, Commercial and Lifestyle audio markets. Jonathan Chen Chairman / Chief Technology Officer / SSA ® Technology Inventor The Redx Audio-Visual team has adopted a mission statement: “To challenge the status quo by combining a groundbreaking improvement in audio amplifier sonic quality with an environmentally friendly reduction in energy consumption”. 1.Owner of over 25 patents worldwide 2.First prize winner in Innovation & Entrepreneurship Award in WeChat Public No. Dongguan City QR Code of Official Website 3.Research Fellow of Griffith University in Australia 4.One of the world top 10 outstanding engineers recommended by AES 5.The Chinese-born American Technical Expert entitled by the Bureau of Foreign Expert Affairs in Guangdong Province Patents Thanks to decades of endeavor, SSA technology has broken the “bottleneck”, overturned the concept of traditional audio power “amplification”, taken the technical high ground internationally and domestically in this field, and thus been recognized by professional authorities globally. 5th . GEN - Single Stage Bridgeless PFC Converter With Soft Switching Patent Pending 4th . GEN - Single-stage Isolated Switching Power Amplifier Achieved Total Soft Switching Patent Pending 3rd . GEN - Super-efficient Single-stage Isolated Switching Power Amplifier USA: PCT: US2014/0159811 PCT/US2013/072515 International: WO2014/093038 2nd. GEN - Single Stage Switching Power Amplifier with Bidirectional Energy Flow USA: PCT: US2014/0159809 PCT/CN2013/088008 International: WO2014/082580 1st . GEN - Ultra-high Efficiency Switching Power Inverter and Power Amplifier USA: International: Canada: European: Australia: Singapore: US8,390,373 B2 WO2011154792 A2 CA2797360 A2 EP2487783 A2 AU2011263451 A1 SG185535 A1 Korean: Japan: European: China: Mexico: KR20130081639 JP2013528351 A EP2580830 CN103038968A 2012011812A 05/06 About SSA Technology SSA stands for Single-stage Switching Class-A. It is a technology for Single-stage High Efficiency switching DC-AC power inverter. Class SSA® is essentially a new “energy conversion” technology developed by Jonathan Chen and his team through years of research and development. The application of multiple patented technologies ensures that Class SSA ® offers a superior solution for real-world applications. A conventional amplifier has a number of consecutive stages – AC-DC conversion followed by a PFC stage then an SMPS stage and finally the Class-D amplifier stage. The SSA® audio amplification system consists of AC-DC conversion and then a ‘single-stage’ transformation of DC to audio output. This new topology delivers higher efficiency than Class-D and better audio fidelity performance than all other amplifier topologies. SSA® technology allows the amplifier to operate at very low temperatures, and does not require large heat sinks or bulky fans to cool the unit. The Class SSA® control circuitry consists of a combination of high-frequency inverter, phase shift modulation, servo circuit, bi-directional switching/energy flow circuits, and finally a LC post-stage filter circuit. The Class SSA® amplifier design has eliminated the unpleasant high-frequency ripple artifacts generated by Class-D amplifiers, and exceeded the exceptional demands of audio signals for instant dynamics, low noise, low distortion and other key metrics. SSA technology audio products have a wide range of applications, including: Commercial Application Entertainment & Tour Installation Personal Consumption Automotive Audio SSA Circuit Diagram DC Power Supply Isolation Transformer Bidirectional Power Switch Bidirectional Active Clamping Waveform Generator LC Filter Load Bidirectional Power Switch Input Phase Shifted Modulator DC-AC Single-Stage Conversion PSM LC DC-AC single-stage power conversion Innovation phase shift modulation technology Bi-directional energy flow technology Highly efficient LC design No additional power supply required, effectively Through the precise modulation of audio signals, the phase Recycling the self-inductive electric potential energy Smooth restoration of the audio signal and improving the energy efficiency of an audiosystem. modulation module precisely controls the whole system, generated by the transducer rebound, protecting the effectively filtering out the high-frequency noise successfully resolving the problem of crossover distortion, speaker effectively, improving the sound quality of the to ensure high-quality audio output. achieving the audio-visual experience of Class-A power amplifiers, subwoofer and raising the whole unit’s efficiency. and thus presenting excellent sound quality. 07/08 The Next Stage of Amplifier Evolution 09/10 Technical Features VH S1 S2 SSA reduces the energy loss in multiple conversions. In V in Sb contrast, the traditional power amplifier has a poor V saw T Auxiliary Circuits SC1 SC2 C1 SC3 SC4 C2 V Sa V SC1 V SC4 D1 Lf E D2 VO TS V Sb V SC2 V SC3 V P i Lf Cf R T VP H S3 S4 VH efficiency as it requires many DC-DC, DC-AC conversions. PSM V S1 V S2 V S3 V S4 Sa Single-stage power conversion (DC-AC) dT Innovative PSM (Phase Shift Modulation) technology No rectification and large DC filter capacitor required Thoroughly eliminating crossover distortion, and No large-capacity aluminum electrolytic capacitor presenting excellent sound of Class-A standerd. required in the audio inversion process, less affected by temperature, and having a stable performance in long-term usage. No linear amplification circuit in the audio inversion process Soft-switching technology Very little heat can be preceived during operation, it is fanless switching) “soft”-switching technology minimizes the design in 1U closed cabinet, which can be used in many instant energy loss in switching on and off. ZVS (zero voltage switching), ZCS (zero current demanding environments. No external power supply required True bi-directional energy flow technology Direct system isolation through high-frequency transformer, SSA returns the inverse electric potential energy synchronically realizes the single-stage inversion and generated by the loudspeaker to the “source” end for changes the DC-DC, DC-AC multistage design in the second use, improving the energy efficiency of the whole traditional power amplification system, improving the unit around 9% and establishing a new standard for the efficiency and audio features of the whole unit. energy efficiency of Pro audio power amplification. 11/12 Technical Advantages C l a s s -D SSA Operating mode PWM PSM（Phase Shift Modulation） Switching method Hard switching Soft switching, ZCS, ZVS Bi-directional energy flow No Yes Energy efficiency of the complete unit High Higher DC-DC power supply Required Not required Large transformer, current capacitance rectification filtration Yes No Switching dead time Yes No Crossover distortion Yes No 2、THD : Output Power vs THD @ 4 ohms,1KHz 3．THD : Frequency vs THD @ 4 ohms 10 5 5 2 2 1 0.5 1 0.5 0.2 0.2 0.1 0.1 0.05 0.05 0.02 0.01 0.02 0.005 0.005 0.002 0.001 0.01 100m 200m 500m 1 2 5 10 20 50 100 200 300 0.002 0.001 20 50 100 200 500 1K 2K 5K 10K ZVS* zero-voltage switching/ZCS* zero-current switching The THD line is smooth within the rated output power, and has good performance with small output power. The result shows that THD has good performance even if SSA is at different frequencies. Measured Results 1. Testing standard for the rated power and maximum power of SSA power amplification Type Specifications Test Results Rated output power (RMS THD ≤ 1%) 4 x 135W @ 8 Ω 4 x 136W @ 8 Ω 4 x 250W @ 4 Ω 4 x 251W @ 4 Ω 2 x 500W @ 8 Ω ( Bridge ) 2 x 502W @ 8 Ω ( Bridge ) 4 x 270W @ 8 Ω 4 x 280W @ 8 Ω 4 x 500W @ 4 Ω 4 x 540W @ 4 Ω 2 x 1000W @ 8 Ω ( Bridge ) 2 x 1020W @ 8 Ω ( Bridge ) Maximum output power (Peak) Peak Output Power @ 8 Ω Peak Output Power @ 4 Ω 20K 4、Signal to Noise Ratio : >100dB (Wideband 22Hz -22KHz) 20 50 100 200 500 1k 2k 5k 10k 13/14 Application Advantages ＋0 －10 －20 －30 －40 －50 －60 －70 －80 －90 －100 －110 －120 －130 －140 －150 20k SSA technology has excellent signal to noise ratio in the range of the 22Hz-22KHZ. True bidirectional energy flow system Improves the conversion efficiency of the whole unit. Rapidly eliminates self-inductive electric force, and 5、Frequency Response: 8 ohms @ 60W reducing the damage to the loudspeaker. The speaker cone is tightly controlled and the bass is clear and powerful to ensure the dynamic bass. ＋1 ＋0.8 ＋0.6 ＋0.4 ＋0.2 ＋0 －0.2 －0.4 －0.6 －0.8 LS1 －1 20 50 100 200 500 1k 2k 5k 10k 20k S1 S2 P Lf i Lf C1 Cf R VO D1 Driving the speaker cone to pop up nE D2 The diagram shows that the frequency response curve of SSA technology is smooth. C2 LS2 6. SSA whole machine meets the EMC requirement S3 S4 LS1 P S1 80 70 60 50 40 30 20 10 0 S2 Lf i Lf Cf C1 -nE D2 D1 0.15 1 10 30 C2 LS2 －1 80 70 60 50 40 30 20 10 0 0.15 1 10 30 S3 S4 R VO The elastic wave and the cone damping system of the speaker produce the phase reversal electric potential energy and transmit back to the energy storage components. 15/16 Input Volts Model Class-AB power amplification of a certain brand SSA 2x500W Input current Input Power Relative energy consumption ratio Input Volts Input current Input Power Relative energy consumption ratio Music power (loudspeaker load) 170W@ per channel (1/3 power output @ pure resistance load) Excellent sound quality 240V 5.8A 780W 100% 240V 3A 370W 100% 240V 3.6A 405W 52% 240V 1.4A 160W 43% Note: The output power is the same for the two power amplifiers. Energy flow increased by 9% As an important part in the sound reinforcement system, good sound quality is essential. SSA, adopting single-stage inverter technology, successfully solves the crossover distortion problem that cannot be perfectly settled by other types of power amplifier (except Class A) through PSM precise control, enabling the SSA power amplifier to have Class-A sound quality. The SSA technology has been successfully applied to HI-FI audio products. The measured result shows that when the output power is the same. The current absorbed by the amplification of SSA technology from the mains supply and the unit power consumption are significantly lower those that of Class-AB power amplifier. When the load is the speaker, the energy efficiency of SSA amplification is higher, and the bi-directional energy flow technology can increase the energy efficiency around 9% (under the current test condition). Signal-to-noise ratio (SNR) of mixing console level SNR directly influences the dynamic playback range of the sound 98% energy efficiency = PSM (Phase Shift Modulation) single-stage inverter technology + True bi-directional energy flow technology + ZVS, ZCS “soft” switching technology Design without electrolytic capacitor During the DC-AC conversion, SSA technology eliminate electrolytic reinforcement system. The single-stage inverter technology adopted by capacitors widely adopted in traditional power amplification devices, SSA only needs one DC-AC conversion process to reduce the thus reducing the impact of external environment on the circuit in intermediate links during the signal amplification and the high-frequency order to guarantee conformance with the product performance and interference and signal loss introduced in multiple conversions. The the long-term working stability. SNR of the power amplification products adopting SSA technology can reach the mixer level. Due to global warming and increasing energy costs, people are all researching and developing energy-efficient products. Several SSA technologies ensure that the conversion efficiency of the power amplifier is up to 98%. 98% energy efficiency not only brings green and energy saving, carbon emissions reduction and cost saving, but also means less storage, handling and installation cost for producers. For installation clients, it means lower operating cost, because except for the energy saving of the device itself, the machine room no longer needs larger cooling devices (air conditioner) resulting over costs saving. The audio power amplification products adopting the SSA technology have gained international and national certifications. National CB Certification National 3C Certification Conformite Europeene American FCC Certification 17/18 Single-stage high-efficiency amplifier Installation series Sapphire I Sapphire II Sapphire III The use of several patented technologies such as single-stage inverter technology, PSM technology and direct bi-directional energy flow technology, etc. brings the energy efficiency ratio (EER) and sound quality of the SSA power amplification system to a new height. Nowadays, SSA technology is widely used in professional sound reinforcement field Sapphire I, Sapphire II, Sapphire III, POE power amplification systems for installation field，the Ruby power amplification system for tour field and the Sapphire C power amplification system for commercial field. Sapphire I, Sapphire II, Sapphire III adopt 1U rack with fanless & fully-closed dustproof cabinet structure with light weight, several patented SSA technologies, Class- A excellent sound quality and high EER; Sapphire III with DSP and standard DANTE network transmission module, is an ideal selection for networked, distributed audio system design. Sapphire III control and management software interface SSA SSA DSP Dante DSP Fanless Fully closed Green and environmental Energy-efficient CLASS-A sound quality Light 1U 5-year warranty 1 2 3 Model Sapphire I Sapphire II Sapphire III Supply Voltage 220VAC +/-10%,50Hz 220VAC +/-10%,50Hz 220VAC +/-10%,50Hz —— 4 x 250 w @ 4 ohms 4 x 250 w @ 4 ohms Rated output power ( RMS, THD< 1% ) Maximum output power (peak value) 2 x 500 w @ 8 ohms 4 x 135 w @ 8 ohms 4 x 135 w @ 8 ohms No Bridge 2 x 500 w @ 8 ohms( Bridge) 2 x 500 w @ 8 ohms( Bridge) 2 x 1000 w @ 8 ohms 4 x 500 w @ 4 ohms 4 x 500 w @ 4 ohms —— 4 x 270 w @ 8 ohms 4 x 270 w @ 8 ohms No Bridge 2 x 1000 w @ 8 ohms( Bridge) 2 x 1000 w @ 8 ohms( Bridge) 4 Frequency bandwidth 20Hz-20KHz, +0/-2.5dB 20Hz-20KHz, +0/-2.5dB 20Hz-20KHz, +0/-2.5dB 5 THD (1/2 maximum output power) <0.08% @ 20Hz - 1KHz <0.3% @1KHz - 20KHz <0.08% @ 20Hz - 1KHz <0.3% @1KHz - 20KHz <0.08% @ 20Hz - 1KHz <0.3% @1KHz - 20KHz 6 System efficiency >90% >90% >90% 7 SNR >100 dB（ A-weighted） >100 dB（ A-weighted） >100 dB（ A-weighted） 8 Input sensitivity 0.775Vrms 0.775Vrms 0.775Vrms 9 Input impedance >10k ohms >10k ohms >10k ohms 10 Power supply rejection ratio (PSRR) >60dB >60dB >60dB 11 DANTE ™network transmission —— —— 4x4 Network audio transmission channel 12 DSP audio processing function —— —— Signal routing selection, working mode control, five-phase full band PEQ, gain control, delay, frequency division, clipping 13 Damping coefficient >300 >300 >300 14 On/off noise (VP-P) 20mV 20mV 20mV 15 DC offset <10mV <10mV <10mV 16 Internal low pass filter (LPF) 30KHz, 18dB per octave 30KHz, 18dB per octave 30KHz, 18dB per octave Signal Signal Signal Overload (clipping) Overload (clipping) Overload (clipping) High temperature High temperature High temperature On/Off On/Off On/Off Overcurrent Overcurrent Overcurrent High temperature High temperature High temperature Overload (clipping) Overload (clipping) Overload (clipping) 17 18 19/20 Technical Specifications POE series power modules are specially designed for distributed installation systems. POE SSA Power Module Meeting room In digital system, PoE product is a terminal node. It receives digital audio signals and drives speakers directly, and it is specially designed for installations in small zones where local power is not required or not available. PoE 25DD is a compact amplifier with DSP functions, which supplies single cable solutions for audio installation systems. It offers excellent sonic quality , simple wiring, A twisted pair cable carries power and audio data, and thus reducing labour costs in installation work. PoE 25DDadopts single-channel constant-resistance drive mode and provides the power option of 20W@8ohm . SSA SSA PoE Dante PoE Fanless Green and environmental Energy-efficient Class-A sound quality LED indicator Protection function 19 Cooling Natural convection cooling Natural convection cooling Natural convection cooling 20 Safety and EMC compliance CE UL CCC CE UL CCC CE UL CCC Fully closed DSP DSP 5-year warranty Multi-functional hall AV audio-visual room Hotel Cinema Technical Specifications Model POE25DD 1 Channel number 1 2 Audio input type Dante 3 DSP processing function Signal routing selection, working mode control, 5-band full spectrum PEQ, gain control, delay, frequency division, clipping Connector Single RJ-45 Transmission speed 100M/1000M bps 4 5 6 7 Audio output Audio maximum output 20W (8 ohm)802.3at Audio output connector 3 Pin EuroBlock Operating software Audio routing control Dante Controller Audio parameter control Redx-D-Controller Audio control parameters Volume,Mute,EQ,NoiseGate(option) Audio parameter Frequency bandwith 20-20kHz THD (1/2 maximum output power) 0.10% S/N >100 dB(A-weighted) Protection functions Output Over Current Over Temperature Over Load / Load Short Cooling 8 9 Convection-cooling(No Fans) Power supply mode Charge power input No Certificate CE UL RCM CCC Dimensions(mm) 144.2(Depth)*57.4(Width)*24.8(Height)mm Weight 175g The Next Stage of Amplifier Evolution