High recovery of used audio equipment

Henan Zhengzhou peak Used audio company is a professional recovery bar, KTV, bar, sound, lighting, computers, TV, air conditioning and other electrical equipment recycling company. For Henan Province bar, KTV, bar, shaking it slowly, professional audio equipment and peripherals enterprises, institutions and other performing arts performances for recycling and sales; focus on second-hand stereo Henan, bars ktv equipment recycling and sales. (Used sound recycling company website: http: //www.hnyxhs.com/) audio equipment sound pressure level: refers to the actual sound pressure and the reference sound pressure of 20 times the logarithm of the ratio, in decibels. This is its mathematical expression. Its importance lies: All sound audio system, the acoustic sound quality all places, we need to have this index in the design calculations behind it is a basis of calculation. Audio equipment reverberation time: refers to a stable sound of a sudden, the sound pressure level of 60dB halls within the time needed to fall, in seconds. Its mathematical expression is as follows. Can be found, the reverberation time is a parameter and structural and architectural decoration materials are closely related. In the actual project, the reverberation time is an important indicator to research acoustics of the hall building. Audio equipment sound power: Speaker wholesale finger reaches rated sound pressure level of system design, sound equipment required for the rated power, in watts. This parameter is the actual sound regulation is not very important, but in the design and selection of the sound system, it is directly reflected in the index of acoustic electro-acoustic parameters, but it will eventually cost related to the project, so it particularly important. Usually in the project, which mainly depends on the speaker's rated power to reflect. The company's core business - overall recovery KTV, bars, discos, static bar, stage performances, recording studios, enterprises and other second-hand (inventory, update, eliminate) professional audio, lighting, video surveillance, television, air conditioning, song systems, computer peripherals, sofa, coffee table and other second-hand goods.