TDA7297做功放时(15W+15W)需加前置放大器吗?用手机直接做音源会不会信号小了?谢谢. 手机的来历？
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二、对于能用耳机来听的信号源，可不用前放，因为功放的输入信号理论上是0dB，也就是0.775V，而输入到耳机的信号也接近0dB，所以不必要前放。如果你觉得声音小，可增大功放增益。
手机信号足够了
绛旓細鏇寸畝鍗曠殑鏄TDA7297闆嗘垚鍔熸斁锛屾湁鏁ｄ欢銆佹湁鎴愬搧鏉裤備笅鍥惧姞涓涓彉鍘嬪櫒銆佷竴涓暣娴佺鍫嗐佷竴涓护娉㈢數瀹癸紝涓や釜浣庨煶鍠囧彮銆佷袱涓珮闊炽佷袱涓垎棰戠數瀹瑰氨琛屼簡銆傝繖鏄崟12V渚涚數鐨勶紝姣攖da2030鍙岀數绠鍗曞浜嗐備綘鏁版暟鏉夸笂鏈夊嚑涓厓浠躲傚姣攖da2030鐨勬澘瀛愶紝瑙佷笅鍥
绛旓細娴嬭瘯涓涓嬪湪涓婄數鍚庢湭杈撳叆淇″彿鏃跺枃鍙帴绾挎煴涓ょ鏄惁瀛樺湪杈冮珮鐨勭洿娴佺數鍘嬨傞犳垚鍠囧彮鎹熷潖銆傞厤15W鐨勫枃鍙冻澶熶簡銆傞噰鐢ㄤ竴涓綆闊(鎴栧叏棰)+涓涓珮闊筹紙閰嶅垎棰戠數瀹癸級灏辫浜嗐傚お濂界殑闊崇杩欎釜鍔熸斁涔熻〃鐜颁笉鍑烘潵锛7297鏈潵灏辩畻涓嶄笂浠涔堥珮妗ｅ姛鏀俱傚彟澶栫數婧愬浣曞紑鍏崇數婧愮殑璇濓紝鏈濂界敤濂界偣鐨勶紝涓嶇劧鍣煶澶с
绛旓細AMPLIFIER WITH MUTE/ST-BY锛屽嵆甯︽湁闈欓煶銆佸緟鏈哄姛鑳界殑+35V/-35V銆佸崟璺60W闊抽鍔熸斁锛TDA7297 - 15+15W DUAL BRIDGE AMPLIFIER锛屽嵆鍙岃矾15W妗ュ紡锛圔TL锛夊姛鏀撅紝宸ヤ綔鐢靛帇6V~18V锛屼篃甯︽湁闈欓煶銆佸緟鏈哄姛鑳姐備絾鑻ヤ笉鎸夊師鏉ョ殑鍗版澘甯冨眬銆佺數璺粨鏋勩佸弬鏁版寚鏍囩瓑鍔ㄥぇ鎵嬫湳搴旀ョ淮淇椂锛屼袱鑰呰嚦灏戦兘鍙互鍋氫负闊抽鍔熸斁浣跨敤銆
绛旓細璋佺煡閬TDA7297鐨鍔熸斁鐢佃矾鍥惧晩,姹傝В 鎴戞潵绛 鍒嗕韩 寰俊鎵竴鎵 缃戠粶绻佸繖璇风◢鍚庨噸璇 鏂版氮寰崥 QQ绌洪棿 涓炬姤 娴忚112 娆 1涓洖绛 #娲诲姩# 瓒呯骇绂忓埄鏉ヨ, 鍥炵瓟璧100鍏冧含涓滃崱!tvb981 2013-10-26 tvb981 閲囩撼鏁:320 鑾疯禐鏁:3360 LV9 鎿呴暱:姹借溅璐拱 宸ョ▼鎶鏈瀛 鍏朵粬绀句細璇濋 鏍″洯鐢熸椿 瀹剁數 鍚慣A鎻愰棶...
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