User manual FOSTEX AP1020

[. . . ] In the enclosure, HP sound reflectors are installed for natural low frequency reproduction. From dynamic low frequencies to natural and smooth high frequencies, the AP1020 reproduces the whole frequency range faithfully. It is the ideal monitor for recording studios. AP1020 (Powered Near Field Monitor) RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. CAUTION CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT. ATTENTION: POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU' AU FOND. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. [. . . ] In no events must an attempt to correct the problem by unauthorized personnel take place. · In the event of entry of water or an object into the appliance, immediately turn off the power switch and remove the AC plug from the AC outlet. A dealer or our service station located nearest to you must be contacted for reinstatement of the original conditions. · In the event of electrical discontinuity and/or damage including conductor exposure occurs to the power cord, contact a dealer or our service station located nearest to you for service. · In the even of a fall of the appliance or damage to appliance cover, immediately remove the AC plug from the AC outlet and contact a dealer or our service station located nearest to you for service. · Placement of the appliance where contact with water is likely must be avoided. This precaution is particularly important when the appliance is used outdoors (on rainy or snowy days, on the beach or other such places). · No vases or cups containing water, and/or small metal pieces must be placed on the appliance. Spilling of water or dropping of metal pieces into the appliance will result in fire and/or electrical shock. · Under no circumstances, must an attempt be made to disassemble, repair and/or alter the appliance. · No contact with the AC plug must be made after lightning has started. It features the highly rigid HR (Hyper Radial) diaphragm, developed by using the latest diaphragm technology called "Radial papermaking technology". As a result, the NX5A offers a rich low frequency sound with minimum distortion. Furthermore, by using the "UDR tangential edge" for the woofer edge, it eliminates the unnecessary resonance and achieves pure and clear sound reproduction (see Figure 1). Using the radial paper-forming technology, speaker diaphragms are made from compound materials (pulp, fiber, etc. ) in a radial shape. This technology allows you to make diaphragms with the desired thickness and strength, which results in improving the speed and extent of a sound. The edge is created by joining up-roll and down-roll at their tangential surfaces while utilizing FEM model analysis to determined the optimum bonding points. The UDR tangential edge is adopted to the edge of the AP1020 woofer. <Figure 3> · Woofer featuring the HR (Hyper Radial) diaphragm The two HP sound reflectors are installed in the enclosure as shown in Figure 3. This configuration reflects the sound in the enclosure diffusely and creates the condition where stationary wave is decayed. · HP sound reflectors Radial paper-forming technology HP sound reflector UDR (Up/Down Roll) tangential edge HR diaphragm The arrangement example of the HP sound reflectors (the cut model above shows the inside of the Fostex NF-1). · Bi-amplifier power The AP1020 utilizes a powerful bi-amplifier design (60W for the woofer, 40W for the tweeter). Driving each speaker unit independently eliminates audio impurity caused by the electric interference between the units. UDR tangential edge <Figure 1> The 20-mm hard dome tweeter employs the magnesium diaphragm. Turning the control right boosts the tweeter level, while turning it left drops the level (see the graph right). When the unit is shipped, the TWEETER control is set to the center (0 dB). This LO FREQ switch permits correction of the low frequency (around 55Hz range) response by +/- 2dB. By setting the switch at the "+2dB" position, the 55Hz response will be enhanced. [. . . ] 32, D-55411 Bingen, Germany TEL: (+49) 6721-94330, FAX: (+49) 6721-32046 <SWITZERLAND> <GREECE> NAME: Bon Studio S. ADD: 6 Zaimi Street, Exarchia, 106. 83 Athens, Greece TEL: (+30) 210-3809-605, 606, 607, 608 FAX: (+30) 210-3845-755, 210-3827-868 NAME: Audio Bauer Pro AG ADD: Bernerstrasse-Nord 182, CH-8064 Zurich, Switzerland TEL: (+41) 1-4323230, FAX: (+41) 1-4326558 <UK> <ICELAND> NAME: I. ADD: ARMULA 38 108 REYKJAVIK, ICELAND TEL: (+354) 588 5010, FAX: (+354) 588 5011 NAME: SCV London ADD: 40 Chigwell Lane, Oakwood Hill Industrial Estate, Loughton, Essex IG10 3NY U. TEL: (+44) 20-8418-0778, FAX: (+44) 20-8418-0624 9 AP1020 (Powered Near Field Monitor) FOR THE US CUSTOMERS ONLY FOSTEX AMERICA LIMITED WARRANTY The following statement defines specific legal rights. [. . . ]