Bravo Music everthing for string player
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à¢éÒÃкº | Å×ÁÃËÑʼèÒ¹ | ÊÁѤÃÊÁÒªÔ¡ | â»ÃâÁªÑè¹ | ÇÔ¸Õ¡ÒÃÊÑ觫×éÍÊÔ¹¤éÒ | ÇÔ¸Õ¡ÒêÓÃÐà§Ô¹| ÇÔ¸Õ¡ÒÃÊè§ÊÔ¹¤éÒ| Êè§àÇçºãËéà¾×è͹ | ¡ÒÃàÅ×Í¡«×éÍäÇâÍÅÔ¹ | ¤ÙèÁ×Í¡ÒÃàÅ×Í¡ÊÒÂäÇâÍÅÔ¹ | â¤Ã§ÊÃéÒ§äÇâÍÅÔ¹ | ¡ÒôÙáÅÃÑ¡ÉÒäÇâÍÅÔ¹ | ¡ÒûÃѺáµè§à¤Ã×èͧ´¹µÃÕ | ãºÃѺÃͧµÑÇá·¹¨Ó˹èÒ | àªèÒâÇâÍÅÔ¹ & àªÅâÅ | àÃÕ¹äÇâÍÅÔ¹ & àªÅâÅ | ¡ÒÃàÅ×Í¡¢¹Ò´à¤Ã×èͧ´¹µÃÕ | ¡ÒúÃÔ¡ÒÃËÅѧ¡ÒâÒ | Vegan Bow | ÈѾ·ìà¤Ã×èͧàÊÕ§ | äÇâÍÅÔ¹ ÂÕèËéÍä˹´Õ ? | µÙéáÍÁ»ì¤ÅÒʵèÒ§æ | ¡ÕµéÒÃìâ»Ã觷çµèÒ§æ | äÇâÍÅÔ¹·Ã§µèÒ§æ | ¢éʹբͧ¡Òë×éÍäÇâÍÅÔ¹·ÕèÃéÒ¹àÃÒ | ¤ÃÙÊ͹äÇâÍÅÔ¹&àªÅâÅ·ÕèºéÒ¹ | ᨡâ¹êµà¾Å§¿ÃÕ

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ชมรมดับเบิ้ลเบสไทย
บริการวงดนตรีสำหรับงานวิวาห์และงานโอกาสต่างๆ
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ËéͧÍÑ´àÊÕ§ BM Recording Studio ËéͧºÑ¹·Ö¡àÊÕ§¤Ø³ÀÒ¾´Õ
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ÅÓ⾧ Passive ¤×Í ÅÓ⾧·ÕèäÁèÁÕÀÒ¤¢ÂÒÂàÊÕ§ËÃ×Í Amplifier ã¹µÑÇàͧ à»ç¹µÙéÅÓ⾧à»ÅèÒæ ·ÕèÁÒ¾ÃéÍÁ¡Ñº´Í¡ÅÓ⾧ àÃҨеéͧä»ËÒà¤Ã×èͧ¢ÂÒÂàÊÕ§
ËÃ×Í Power Amplifier ÁÒµèÍà¾×è͢ѺãËéÅÓ⾧ Passive ·Ó§Ò¹ «Öè§â·¹àÊÕ§¢Í§ÅÓ⾧¡ç¨Ðà»ÅÕè¹仵ÒÁáÍÁ»ì·Õèãªé§Ò¹

¢éÍ´Õ ¤×Í ÊÒÁÒöËÒáÍÁ»ìã¹â·¹àÊÕ§·ÕèªÍºÁÒ»ÃѺàÊÕ§·Õè¨Ð¢ÑºÍÍ¡¨Ò¡ÅÓ⾧ä´é
¢éͨӡѴ ¤×Í ¢¹ÂéÒÂäÁèÊдǡà·èÒÅÓ⾧Ẻ Active à¾ÃÒеéͧ«×éÍ Power Amp. ÁÒµè;ǧà¾×èÍãËéà¡Ô´àÊÕ§ áÅÐÂØè§ÂÒ¡ÊÓËÃѺ¡Òõè;ǧÊÒÂÊÑ­­Ò³à¢éҡѺµÑÇ Power Amp.
·ÓãËéµéͧà¼×èͧºäÇéÊÓËÃѺÊÒÂÊÑ­­Ò³·ÕèÁդسÀÒ¾ÊÙ§´éÇ ËÒ¡ãªéÊÒÂÊÑ­­Ò³·Õè äÁèÁդسÀÒ¾ÍÒ¨·ÓãËé¤Ø³ÀÒ¾àÊÕ§¹Ñé¹ÍÍ¡ÁÒäÁèÊÁºÙóì ËÒ¡¼ÙéãªéäÁèªÓ¹Ò­¾Í àÊÕ§·ÕèÍÍ¡ÁÒ ÍÒ¨¨ÐáÂè¡ÇèÒÅÓ⾧»ÃÐàÀ· Active ¡çà»ç¹ä´é

ÅÓ⾧Ẻ Passive ¨ÐÁÕÃÒ¤Ò¶Ù¡ÇèÒÅÓ⾧Ẻ Active ã¹ÃдѺà´ÕÂǡѹ áµèÅÓ⾧Ẻ Passive ¹Ñé¹ÂѧäÁèÃÇÁÃҤҢͧ Power Amplifier áÅÐÊÒÂÊÑ­­Ò³ÊÓËÃѺµèÍàª×èÍÁ

ÅÓ⾧ Active ¤×Í ÅÓ⾧·ÕèÁÕÀÒ¤¢ÂÒÂàÊÕ§ ËÃ×Í Amplifier ã¹µÑÇ à¾Õ§á¤èàÊÕº»ÅÑê¡ä¿ (ÊÒ AC Ẻ·Õèãªé¡Ñº¤ÍÁ¾ÔÇàµÍÃì) µèÍ Input à¢éÒä»áÅéǢѺàÊÕ§ÍÍ¡·Ò§ÅÓ⾧ä´éàÅ «Ö觼Ùé¼ÅÔµ¢Í§áµèÅÐáºÃ¹´ì¨Ð¼ÅÔµ¡ÓÅѧÇѵµìáÍÁ»ìãËéàËÁÒÐÊÁ¡Ñº´Í¡ÅÓ⾧¹Ñé¹ÁÒáÅéÇ áÍÁ»ì·Õèãªé¡çÁÕãËéàÅ×Í¡ÍÕ¡ÇèÒà»ç¹ Class AB ËÃ×Í Class D «Öè§ÃÒ¤Ò¡ç¨ÐµèÒ§¡Ñ¹ä»´éÇ ÊèǹãË­è¹ÔÂÁ¹ÓÁÒãªé§Ò¹¤Í¹àÊÔÃìµ, §Ò¹ Event ÍÍ¡ºÙ¸ ËÃ×ͧҹ Exhibition ºÃÔÉÑ·ÍÍá¡ä¹«ìà«ÍÃì áÅмÙéãªé·ÑèÇä»·ÕèÁÕÁÕ¤ÇÒÁªÓ¹Ò­ÁÒ¡¹Ñ¡¨Ð¹ÔÂÁãªéÅÓ⾧ª¹Ô´¹Õé

¢éÍ´Õ ¤×Í ãªé§Ò¹ä´é§èÒÂÊдǡ àÊÕ§·ÕèÍÍ¡ÁÒ´ÕµÒÁÁҵðҹ ¢¹ÂéÒ áÅеԴµÑé§Êдǡ
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RMS ÂèÍÁÒ¨Ò¡ Root-Means-Square
à¾ÒàÇÍÃì ÍÒÃìàÍçÁàÍÊ ¤×Í¡ÓÅѧà©ÅÕè ·Õèà¤Ã×èͧàÊÕ§»ÅèÍÂÍÍ¡ÁÒä´éÍÂèÒ§µèÍà¹×èͧ µÑÇÍÂèÒ§àªè¹ 1,000W RMS

dB ÂèÍÁÒ¨Ò¡ à´«ÔàºÅ (Íѧ¡ÄÉ: decibel, dB) à»ç¹Ë¹èÇÂÇÑ´à·ÕºÍѵÃÒÊèǹÃÐËÇèÒ§»ÃÔÁÒ³àÊÕ§Êͧ»ÃÔÁÒ³ ãªéÊÓËÃѺÇÑ´¤ÇÒÁ´Ñ§¢Í§àÊÕ§ ¤Ô´¤é¹â´Â Alexander Graham Bell ¹ÔÂÁãªé¡Ñ¹Áҡ㹷ҧͤÙʵԡ ¿ÔÊÔ¡ÊìáÅÐÍÔàÅç¡·Ã͹ԡÊì à´«ÔàºÅà»ç¹Ë¹èÇÂÇÑ´·ÕèäÁèÁÕ˹èÇÂàËÁ×͹¤èÒà»ÍÃìà«ç¹µì ˹èÇÂà´«ÔàºÅà»ç¹Ë¹èÇ·ÕèÊÒÁÒöáÊ´§¤èÒÊÙ§áÅФèÒµèÓà»ÃÕºà·Õº¡Ñ¹ä´éà¹×èͧ¨Ò¡¤Ó¹Ç³¨Ò¡¡ÒÃËÒÅÍ¡ÒÃÔ·ÖÁ ÃдѺഫÔàºÅ·Õè¶Ö§¢Ñé¹ÍѹµÃÒ¢ͧ¤¹ËÙ»¡µÔ¤×Í 85 à´«ÔàºÅ¢Öé¹ä» (ËÅѧ¨Ò¡ÃѺ¿Ñ§ËÅÒªÑèÇâÁ§)

SPL ÂèÍÁÒ¨Ò¡ «ÒÇ´ìà¾ÃÊàªÍÃìàÅàÇÅ (Sound Pressure Level) ÁÕ˹èÇÂÇÑ´¤èÒ¤ÇÒÁ´Ñ§ÊÙ§ÊØ´¢Í§àÊÕ§ãªé˹èÇÂÇÑ´à»ç¹dBäÁèÁÕ¡Ó˹´¤èÒÁҵðҹ¶éÒ SPL ÂÔè§ÁÕ¤èÒ·ÕèÁÒ¡ ËÁÒ¶֧¤ÇÒÁ´Ñ§àÊÕ§·Õè´Ñ§à¾ÔèÁ¢Öé¹ áÅÐ ã¹¢³Ðà´ÕÂǡѹ ¶éÒ SPL ÂÔè§ÁÕ¤èÒ·Õè¹éÍ ËÁÒ¶֧¤ÇÒÁ´Ñ§àÊÕ§·ÕèÁÕ¤ÇÒÁ´Ñ§Å´Å§

GND/LIFT ÂèÍÁÒ¨Ò¡ Ground-Lift ¤×Í»ØèÁ·ÕèãªéÊÓËÃѺµÑ´ Ground ¢Í§ÊÑ­­Ò³àÊÕ§·Õèàª×èÍÁµèÍÃÐËÇèÒ§ÍØ»¡Ã³ìãËéá¡ÍÍ¡¨Ò¡¡Ñ¹ à¾×èÍ»éͧ¡Ñ¹»Ñ­ËÒ Ground-Loop «Öè§à»ç¹·ÕèÁҢͧàÊÕ§ÎÑÁàÊÕ§¨Õè â´Âã¹Ê¶Ò¹¡Òóì»Ã¡µÔ»ØèÁ¹Õé¨Ð¶Ù¡¡´¡çµèÍàÁ×èÍà¨Í»Ñ­ËÒ Ground-Loop à·èÒ¹Ñé¹

âÍËìÁ (Íѧ¡ÄÉ: ohm) (ÊÑ­Åѡɳì : Ω) à»ç¹Ë¹èÇÂàÍÊäÍ (SI) ¢Í§¤èÒÍÔÁ¾Õá´¹«ì·Ò§ä¿¿éÒ ã¹¡Ã³Õ¢Í§¡ÃÐáÊÊÅѺ ËÃ×ͤèÒ¤ÇÒÁµéÒ¹·Ò¹ä¿¿éÒ ã¹¡Ã³Õ¢Í§¡ÃÐáʵç µÑ駪×è͵ÒÁà¡ÍÍÃì¤ «ÕÁç͹ âÍËìÁ ¹Ñ¡¿ÔÊÔ¡ÊìªÒÇàÂÍÃÁѹ

HF transducer ÂèÍÁÒ¡¨Ò¡ high frequency transducer ¤×Í µÑÇá»Å§ÊÑ­­Ò³¤ÇÒÁ¶ÕèÊÙ§

LH transducer ÂèÍÁÒ¡¨Ò¡ Low frequency transducer ¤×Í µÑÇá»Å§ÊÑ­­Ò³¤ÇÒÁ¶ÕèµèÓ

NFB ÂèÍÁÒ¨Ò¡ No Fuse Breaker ËÁÒ¶֧ äÁèµÑ´ª¹Ç¹ 

KHz ÂèÍÁÒ¨Ò¡ ¡ÔâÅàÎÔÃì·«ì (Íѧ¡ÄÉ : Kilohertz)
à»ç¹¤Å×蹤ÇÒÁ¶ÕèÁÕ¤èÒà·èҡѺ 1,000 àÎÔÃì·«ì à»ç¹Ë¹èÇÂÇÑ´¨Ó¹Ç¹ÃͺµèÍÇÔ¹Ò·Õ 1 ¡ÔâÅàÎÔÃì·«ì ¨Ö§à·èҡѺ˹Ö觾ѹÃͺµèÍÇÔ¹Ò·Õ ãªé¡Ñº¤ÇÒÁ¶Õè¤Å×è¹àÊÕ§ÊÙ§

Hz ÂèÍÁÒ¨Ò¡ àÎÔõ«ì (Íѧ¡ÄÉ: Hertz) à»ç¹Ë¹èÇÂ͹ؾѷ¸ìàÍÊäÍ (SI) «Öè§à»ç¹Ë¹èÇ¢ͧ¤èÒ¤ÇÒÁ¶Õè â´Â 1 Hz ¤×Í ¤ÇÒÁ¶Õè·Õèà·èҡѺ 1 ¤ÃÑé§ µèÍÇÔ¹Ò·Õ (1/s) ËÃ×Í 1Hz=1/S ´Ñ§¹Ñé¹ 50 Hz ËÁÒ¶֧ÁÕ¤ÇÒÁ¶Õèà·èҡѺ 50 ¤ÃÑ駵èÍ 1 ÇÔ¹Ò·Õ áÅÐãªé¡Ñº¤ÇÒÁ¶Õè¤Å×è¹àÊÕ§µèÓ
ª×èÍ˹èÇÂàÎÔõ«ìÁÒ¨Ò¡ª×è͹ѡ¿ÔÊÔ¡ÊìªÒÇàÂÍÃÁѹ ª×èÍ äιìÃÔª áη«ì à»ç¹¹Ñ¡ÇÔ·ÂÒÈÒʵÃì·Ò§´éÒ¹áÁèàËÅç¡ä¿¿éÒ
˹èÇÂàÎÔõ«ìä´é¡Ó˹´¤ÃÑé§áá㹠¾.È. 2473 (¤.È. 1930) áÅéÇàÃÔèÁÁÒãªéá·¹ ˹èÇ ÃͺµèÍÇÔ¹Ò·Õ (cycles per second ËÃ×Í cps) ã¹»Õ ¾.È. 2503 (¤.È. 1960) µèÍÁÒã¹»Õ ¾.È. 2513 (¤.È. 1970) ˹èÇ Hz ä´éãªé·´á·¹¡ÒÃãªé cps á·º·Ñé§ËÁ´

W ÂèÍÁÒ¨Ò¡ Çѵµì (watt) à»ç¹Ë¹èÇÂàÍÊäͧ͢¡ÓÅѧ µÑ駪×è͵ÒÁà¨ÁÊì Çѵµì µÑÇÍÂèÒ§¾Åѧ§Ò¹ã¹Ë¹èÇÂÇѵµì àªè¹ ËÅÍ´ä¿·ÕèãªéµÒÁºéÒ¹ãªé 100 Çѵµì ¢³Ð·Õèà¢×è͹ÎÙàÇÍÃì¼ÅԵ俿éÒä´éÊͧ¾Ñ¹ÅéÒ¹Çѵµì

1 Çѵµì ÁÕ¤èÒà·èҡѺ 1 ¨ÙŢͧ¾Åѧ§Ò¹µèÍÇÔ¹Ò·Õ

âÇŵì Çѵµì áÍÁ»ì ᵡµèÒ§¡Ñ¹ÍÂèÒ§äÃ
âÇŵì (volt ËÃ×Í V) ¤×Í˹èÇ·ÕèãªéàÃÕ¡à¾×èͺ͡¢¹Ò´¢Í§áç´Ñ¹ä¿¿éÒ㹺éÒ¹ ÍÒ·Ô 220 V ËÁÒ¶֧ ¢¹Ò´¢Í§áç´Ñ¹ä¿¿éÒà·èҡѺ 220 âÇŵì (»ÃÐà·Èä·Â¡çãªéä¿Ãкº¹Õé)

áÍÁá»Ãì ËÃ×Í áÍÁ»ì (ampere ËÃ×Í A) ¤×Í˹èÇ·ÕèãªéàÃÕ¡ÊÓËÃѺºÍ¡»ÃÔÁÒ³¢Í§¡ÃÐáÊä¿¿éÒ·ÕèäËżèÒ¹µÑÇ¹Ó ËÃ×ÍÍØ»¡Ã³ìä¿¿éÒ¹Ñè¹àͧ ÍÒ·Ô 5 A ËÁÒ¶֧ »ÃÔÁÒ³¡ÃÐáÊä¿¿éÒ·ÕèäËżèÒ¹à·èҡѺ 5 áÍÁá»Ãì

Çѵµì (Watt) ¤×Í Ë¹èÇÂÇÑ´¡ÓÅѧ俿éÒ·Õèà»ç¹µÑǺ͡¾Åѧ§Ò¹ä¿¿éҢͧÍØ»¡Ã³ìËÃ×Íà¤Ã×èͧãªéä¿¿éÒ áµèÅЪ¹Ô´ãªé㹡Ò÷ӧҹ àªè¹ ËÅÍ´ä¿ 100 Çѵµì ËÁÒ¤ÇÒÁÇèÒ ËÅÍ´ä¿¡Ô¹ä¿ 100 ¨ÙŵèÍÇÔ¹Ò·Õ
1 W = 1 J/s = 1 ¹Ôǵѹ àÁµÃ µèÍÇÔ¹Ò·Õ = 1 kg·m2·s−3

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