2 Channel Digital Stereo Power Amplifier with 1000 Watts Power Audio Amplifier for Home Speaker System

1,Brief story :     Q series was designed to meet small scale sound system.adopted high efficient Switching mode power for Class D amplifier modules. Features very compact design and light weight.Combined with 2 models Q504(4*500W) and Q502(2*500W) that well matched conference or school sound system with low budget.2,Feutures:1,Class D 1U rackable design2, Capable for small speaker 8ohms only3,Light weight with 4KG totally4,Easy carrying where it needs3,Applications:★ Mobile &  installation★Conference & school★ Houses of worship★High sonic required PA     ModelQ-504Q-502Channel Number42Rated Output Power 8ohm(THD=1%,1kHz)4x300w2x2300wRated Output Power 4ohm(THD=1%1kHz)4x500w2x4400wMaximum RMS voltage swing                 (THD=1%,1kHz)55V55VSlew rate (at 1 kHz)30V/usInput sensitivity(at rated output power or voltage, 1 kHz)l.0Vrms,32dB,26dBTHD          0.1 Wfull power (typical value 0.02%)< 0.01%IMD-SMPTE 0.1 W full power   (typical value 0.05%)< 0.01%DIM30       0.1 W full power (typical value 0.05%)< 0.01%Crosstalk (ref.1kHz, at 10% rated output power 8Q)80dBFrequency response(ref.20-20kHz, 10%power, 8ohm load)20Hz-20Khz(±0.5dB)Input impedanceBalance 20kohm ,unbalance 10kohmDamping Factor (ref.100Hz,8ohm output load)500Signal to noise ratio (a weighted 20Hz-20kHz)>105dBPower RequirementsAC~100-240V(50-60Hz)Protectionover heat/thermal output power control/long term output power control output short-circuit/overload protection/DC protectionDimensions (WxDxH.mm)483x350x44Net weiht(KG)64    WHO we areZhongshan tinboo audio electronics co,.limited(Brand in Audiopeak,call us audiopeak for short),Located in ZHONGSHAN CN, was founded in Aug 2009 and is dedicated to providing "one stop supply" precision amplifier system to ODM and OEM clients. audiopeak products lines include: Analog amplifier,Digital amplifier,Self-power module, DSP amplifiers . Now audiopeak is One of the most professional manufacturers of pro audio...WHAT we doInnovation By DesignAt AUDIOPEAK, we are driven by a singular vision - produce great products. It may sound simple, but it's at the forefront of everything we do.We always strive for products that ARE easy to install and a pleasure to use. The quest to be the best is a never ending and sometimes exhaustive road, But it's a pillar of our success.Battle TestedAll of our products are "battle tested."We firmly believe that to deliver a great product one must spend a lot of time not just perfecting the design but actually using the product. That is why we put a great deal of time and effort into research, design and testing.Custom MadeOut of the thousands of amplifiers to choose from, how many are custom made just for you?At Audiopeak electronics, a big portion of our business is based on designing & manufacturing custom made products for both outdoor and indoor AMPLIFICATION.It's what we do and it's a big part of who we are.  How do I match my speakers to my power amp?A general rule for choosing an amplifier is to select an amp that provides 1.5-2 times the continuous power rating of your speaker. This will ensure the speaker has enough power while leaving yourself 3 dB of headroom.  How do STEREO, PARALLEL, and BRIDGE modes operate?STEREO: Each channel operates independently. Input signal and attenuator are also separated between each channel.PARALLEL: Input signal is connected to only a single channel, and the same output signals are obtained from two adjacent channels. Attenuator operates independently.BRIDGE: Two channels of power amp output work as a single channel with doubled output. Only a single attenuator operates. The voltage gain will be increased by 6dB, and the minimum load impedance will be doubled. For details on connecting the speaker output, please refer to the manual that came with each power amp.  What is rated output power?Rated output power is the RMS (root mean square) or effective value of electric power that can be delivered continuously for several ten seconds to few minutes. The unit is W (Watt).It is not a value that can be output continuously for a long period, but it would not matter in a practical operation because music signal and voice speech signal are generally not constant in level. When a signal like continuous sine wave is continuously driven at the rated output, the thermal protection circuit will be activated, which will reduce the output power to around 1/8 (-9dB).  What is input sensitivity?it is the required input signal level to obtain the rated output when attenuator is in its maximum (generally 0dB). It also means the output signal will be clipped if a signal larger than the input sensitivity is being input with the attenuator at maximum. When the voltage gains are the same, the larger output model is, the larger its input sensitivity is, too.If the load impedance is halved, the output power will be almost doubled since the voltage gain is constant. In this case, however, the input sensitivity will be a little smaller because the actual rated outp