JAMOメーカーD 4の使用説明書/サービス説明書
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Technical Description Jamo D 4 Concept.
2 Technical Description Jamo D 4 Concept Contents: 1. General system description 2. The products: 2.1. D 400 2.2. D 430 2.3. D 450 2.4. D 4CEN 2.5. D 4SUB 3. Driver explanation 3.1. Tweeter 3.2. Mid-woofer/woofer 3.3. (Sub) woofer 4. Electronics (D 4SUB) 5.
3 General description With the Jamo D 4 Concept the goal was to create “the link” between high-end hifi and - surround sound and at the same time focussi ng on versatility – or flexibility – in system configuration and placement.
4 Wall mount: The rear wall “amplifies” low frequencies and the floor actually gives a dip in approximately the same range due to the first floor reflection reaching the ear in opposite phase with the direct sound from the speaker. The speaker can be used as full range.
5 D 450 D 450 is a 2½ way dual bass re flex system featuring a 6½” woofer, a 6½” mid-woofer and a 1” DCD tweeter. The 2½ way configuration has sort of become a hallmark of Jamo. We are using this configu ration in a number of products starting with our highly acclaimed D 870 speaker.
6 D 4CEN D 4CEN is a 2 way bass reflex system featuring two 4½” woofers and a 1” DCD tweeter. The design of D 4CEN is kept as compact as possible in order to make it easier to place the speaker close to the TV set. So, the height of just 16-cm/6.
7 As mentioned the D 4SUB goes very low in or der to reproduce the extreme bass contents of movie soundtracks with full authority. However, under certain circumstances this can create a problem, which is why some decoders feature a Boundary Gain Compensation filter.
8 Drivers Tweeter The tweeter in the D 4 range, has already been well acclaimed in Jamo products, as it is used in th e Jamo D 7 THX Ultra2 system, winner of the EISA awar d as “High-end Home Theatre 2002/2003”. However, to suit the exact purpose in D 4 , we developed a new, asymmetric front baffle.
9 In fact, the choice of “mot or” materials makes use of magnetic oil for cooling and resonance damping unnecessary! All these features in combination allow the diaphragm to move effortless and the result is a very natural, detailed, dynamic and open sound reproduction.
10 However, the anodised aluminium ce ntre plug is probably the most conspicuous feature of the D 4 woofers. It replaces the traditional dust cap in the centre of the loudspeaker cone at the place where the dust cap would normally be mounted - thereby making the cone lighter and thus faster.
11 (Sub)Woofer The 8” woofer features a vented magnet system and a Ø 38 mm / 1½” aluminium voice coil former. The 4-layer voice coil is 28 mm / 1.
12 Cabinets All D 4 cabinets are made of heavy MDF board , a solid and resonance dead base for the drivers to work in. However, the most remarkable cabinet feature is probably the Double Curved front baffle. It is common knowledge that one of the most rigid constructions at all is a round shape; a ball, an egg etc.
デバイスJAMO D 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:
JAMO D 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JAMO D 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。JAMO D 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。JAMO D 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。
JAMO D 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JAMO D 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、JAMO D 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JAMO D 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。