| POWER SOUND ELECTRONICS LIMITED |
Adds: Xi Chong Yan Cun Industrial |
| Area, Kui Chong Town, Shenzhen |
| City, Guandong, P.R.China 518119 |
Tel: +86-755-8423 5076, 8423 5093 |
8423 5316, 8423 5041 |
| Fax: +86-755-8423 5085 |
| E-mail: psound@szonline.net |
| E-mail:sales@chnpowersound.com |
| Http: // www.chnpowersound.com |
| POWER SOUND ELECTRONICS LIMITED (HONG KONG) |
| Adds: Room 704, 7/F, Blissful |
| Building, 243-247 Des Voeux Road, |
| Central, Hong Kong |
Tel: +852-6294 5504 |
| POWER SOUND ELECTRONICS (NANTONG) CO., LTD. |
| Adds: Zhongtian Industrial Area, |
| Hekou Town, Nantong City, Jiangsu |
| P.R.China 226463 |
| Tel: +86-513-84883338, 84883588 |
| Fax: +86-513-84883998 |
| POWER SOUND ELECTRONICS (JIANGYIN) CO., LTD. |
| Adds:Yuecheng Town,Jiangyin City |
| Jiangsu P.R.China 214404 |
| Tel: +86-510-6582084, 6583615 |
| Fax: +86-510-6586736 |
| KUM-JUNG INTERNATIONAL CORP. (KOREA) |
| Adds: Na-3216, Chung - Ang |
| Girculation Complex, #1258 |
| Gurobon - Dong, Guro-Gu, Seoul |
| 152-721, Korea |
| Tel: +82-2-26165188, 26165166 |
| Fax: +82-2-26168889 |
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| Technical Information |
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| Impedance All speaker have a certain amount of impedance which is a frequency-sensitive function. They have typic impedance values in the rang shown in Fig1. Nominal impedance is a speaker impedance at a particular frequency, usually the one above the lowest resonant frequwncy (fo) at which the speaker has the lowest impedance. Frequency A practical frequency response for a speaker is the frequency range within which the speaker output will not drop by more than 10dB from the rated output sound pressure level. Input Power The input to a speaker is defined as follows: P=E2/Z P: input power (W) E: voltage across the voice coil (V) Z: nominal impedance (¦¸) Maximum allowable input power Themaximum input(rms) power containing various frequency spectrums, applied repeatedly for 1 minute every 2 minutes, on which the speaker can operate regardless of distortion without being damaged. Output sound pressure level Output sound pressure level is defined with an input of the rated power at 4 different frequencies applied to the speaker terminals. The output is defined as SPL which is dB relative to 2¡Á10-5Pa at the average value. |
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