MK SoundメーカーLFE-4の使用説明書/サービス説明書
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LFE-4 Miller & Kreisel Sound, Inc. 9351 Deering A venue Chatsworth, CA 91311-5858 USA (818) 701-7010 fax (818) 701-0369 www .mk professional.com ©2003 Miller & Kreisel Sound, Inc.
Please record the f ollowing inf ormation for y our records: Serial Number : Date of Purchase: Dealer Name: Dealer Address: City/State/Zip: Countr y: Inv oice Number: Bass Management Controller T ABLE OF CONTENTS 1. SAFETY PRECA UTIONS................
1. SAFETY INSTRUCTIONS 1. READ INSTRUCTIONS - All safety and oper ating instructions should be read before this product is operated. 2. RET AIN INSTRUCTIONS - The saf ety and operating instructions should be retained f or future reference . 3. HEED W ARNINGS - All warnings on this product and in the operating instructions should be adhered to.
2. M&K’S DESIGN PHILOSOPHY Our philosoph y is that e xciting and lifelik e sound and m usic reproduction tak es place when y our ears , in eff ect, become the recording microphones.
By combining a carefully designed low frequency acoustic rolloff of all the main speak ers, including the surrounds, and a matching 2nd order electronic filter in the M&K Bass Management Controller , M&K achiev es all the theoretical benefits of a 4th order Linkwitz-Riley filter .
The LFE-4 consists of a series of five high-pass filters (one each f or the L, C , R, LS , LR channels) that route high frequency inf ormation (above 80Hz) to their appropriate channel’ s amplifier and speaker monitor . Each channel is also routed through a matching 80Hz low-pass filter .
Input and Output Connector Wiring The XLR connectors on the LFE-4 are wired as f ollows: Pin 3: Minus Pin 2: Plus Pin 1: Ground General Connection Guidelines T o a v oid loud transients that ma y dama.
6. CONNECTING FOR STEREO 1. Connect the left and right outputs of y our mix er to the left and right input channels of the LFE-4. 2. Connect the left and right outputs of LFE-4 to the inputs of y our power amplifiers or directly to y our powered loudspeak ers .
7. CONNECTING FOR DOLBY DIGIT AL 1. Connect the left, center , right, left surround and r ight surround outputs of your mix er to the left, center , right, left surround and right surround input channels of the LFE-4. 2. Connect the outputs of LFE-4 to the inputs of y our po wer amplifiers or directly to y our powered loudspeakers .
(Note: In order to gain an extra 10dB of headroom on the lo w frequency eff ects (LFE) channel, Dolb y specifies that this channel be recorded 10dB lower than the 5 main channels . This 10dB low er le v el is made up in the pla yback chain to restore the correct 5 channel to .
5. If y ou are using passiv e speak ers with e xter nal amplifiers, connect y our speaker system to the power amplifiers . 6. Locate the e xter nal power supply f or the LFE-4 and plug it into the 4 pin power connector on the bac k of the LFE-4. Secure it in place by turning the outer r ing clockwise .
T rac k three: 1 kHz sine wav e recorded at – 20dB FSD . Use this to set the reference le v el of y our source (console, etc.) On an analog console this will be 0VU .
The speakers should be placed so that the tw eeters are directly in line with the listener ’ s ears, that is, on-axis . (M&K pow- ered speakers ha v e a red LED recessed into the front baffle. The listener will know when his speak ers are on-axis when he can see this LED .
13. SPEAKER CALIBRA TION 1. Y our speak ers should now be in their final positions . 2. Remo v e all EQ and signal processing from the monitor path. 3.
15. LFE-4 SPECIFICA TIONS All outputs hav e a +/- 12dB trim control f or balancing the system . LCR and Surround channels: Input Impedance: 20K ohm balanced Output Impedance: 200 ohms balanced High pa.
LFE-4 manual PN # 70360 7/08/2003 rev .1 pt/qrk.
デバイスMK Sound LFE-4の購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
MK Sound LFE-4をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはMK Sound LFE-4の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。MK Sound LFE-4の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。MK Sound LFE-4で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
MK Sound LFE-4を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はMK Sound LFE-4の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、MK Sound LFE-4に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちMK Sound LFE-4デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。