Operating Instructions for the Predator HT/1508 Sub-Bass System
Caution Marking Explanation The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of un-insulated dangerous voltage within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
Important Safety Instructions 1 Read all of these instructions. 2 Save these instructions for future use. 3 Heed all warnings. 4 Follow all instructions. 5 Do not use this apparatus near water. 6 Clean only with automotive polish and micro fiber cloth. 7 Install in accordance with the manufacturer’s instructions. 8 D o not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat.
15 Minimum distances 10cm around the apparatus for sufficient ventilation. 16 The ventilation should not be impeded by covering the ventilation openings with items, such as newspapers, table-cloths, curtains, etc. 17 No naked flame sources, such as lighted candles, should be placed on the apparatus. 18 Attention should be drawn to the environmental aspects of battery disposal. 19 The use of apparatus in moderate climates.
Attention Explication Marquage L’éclair avec le symbole de pointe de flèche dans un triangle équilatéral est destiné à alerter l’ utilisateur de la présence de non isolée tension dangereuse à l’intérieur de l’enceinte du produit qui peut être d’une ampleur suffisante pour constituer un risque d’électrocution pour les personnes.
9 N e pas contourner le dispositif de sécurité de la prise de terre. Une fiche de terre a deux lames et une troisième broche de mise à la terre. La troisième broche est fournie pour votre sécurité. Si la fiche fournie ne rentre pas dans votre prise, consultez un électricien pour le remplacement de la prise obsolète. 10 Protégez le cordon d’alimentation ne soit piétiné ou pincé, en particulier au niveau des fiches, des prises de courant, et le point de sortie de l’appareil.
Avertissement Cet article est lourd. Pour éviter tout risque de blessure, prendre soin lors de la manipulation. L’ appareil ne doit pas être exposé à des éclaboussures et aucun objet rempli de liquide, comme des vases, ne doit être placé sur l’appareil. Les conduites Plus est utilisé comme dispositif de déconnexion. La fiche de l’appareil ne doit pas être obstruée OU doit être facilement accessible pendant l’utilisation.
Dear Friend and Valued Customer Dear REL Owner, Thank you for the purchase of your new Predator, HT/1508, our new flagship of the Home Theatre range. You see, for more than a quarter century, REL have built the most remarkable dual-purpose powered subwoofers; we call them Sub Bass Systems. Subs capable of rendering music at an unimaginably high level, yet also able to pound out powerful theater when called upon to do so.
REL Predator HT/1508 Rear Panel Connection Legend 1 Power Pilot Light: Power On/Off indicator. 2 Auto/On Switch: Used to toggle between Auto On mode (left), and Always On (right). 3 Phase: Used to set phase 0-180 degrees. 4 Crossover: Used to adjust crossover frequency. Variable between 40-250Hz. 5 Level: Volume control for Input. 6 XLR Output: Used to connect or “daisy chain” to another REL in tandem.
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Connecting Up Always switch off your system before disconnecting any wires. To simplify and to increase the versatility of connecting, the Predator models have two low-level RCA inputs as well as an XLR input. This is to facilitate ability to use with AV surround sound systems, two-channel stereo systems and powered speakers. Low-Level Inputs .1/LFE Input There is a single RCA jack labeled .1/LFE for LFE connection to a processor. Plug one end of the RCA to RCA cable into the .
Phase Switch The phase control on a REL has two positions, 0 and 180. One of these positions will set the REL in phase with the speakers, and one will set it out of phase. The labels 0 and 180 are just labels and tell us nothing about the rest of the system, only if the REL is working with the speakers or not. Whichever position results in the loudest and fullest sub bass, is the correct position. We want the REL to work in harmony with the speakers, reinforcing bass, not cancelling it.
REL Set-Up Made Simple With the REL Predator, there are two basic ways to connect and setup. The first is a single channel input from the sub out of a theater or power speaker system. In this case a single RCA cable is need and the CROSSOVER control can be set to LFE since the source will have an internal upper frequency limit. The second is a stereo input from a stereo preamp or powered speaker system.
1 Theater Connection (Sub Out Connecton) • Connect RCA or XLR cable from Sub Out of theater processor to LFE input of Predator. • Adjust LEVEL control to 10 o’clock. • Adjust CROSSOVER control to LFE (maximum). • Plug in AC cord. • Power on with switch next to AC input. • Set toggle below STATUS light to ON. • F ine tune LEVEL control using a known powerful .1 chapter to make sure your setting is not too high or damage can occur. • Set CROSSOVER control lower to eliminate upper bass boom.
2 Stereo Connection (Powered Speaker Connection) • Connect RCA from output to right input for mono or both left and right for stereo. • Adjust LEVEL control to 10 o’clock. • Adjust CROSSOVER control to 10 o’clock. • Plug in AC cord. • Power on with switch next to AC input. • Set toggle below STATUS light to ON. • Fine tune LEVEL control to blend with powered speakers. • Fine tune CROSSOVER control to blend. • Note that CROSSOVER and LEVEL become inverse.
3 P hase Orientation Once connected, we need to adjust for phase. This may be the single most critical step, and because it really is quite simple, it is often over-thought. Keep in mind; the right phase is whichever position is the loudest or fullest. While playing music with true low bass, adjust the crossover to a point where the REL and the speaker are sure to share frequencies at 50Hz on the crossover control, or slightly higher for smaller speakers.
Stacking HT/1508 Predator was designed to permit stacking of up to three (3) cabinets on top of each other to create a line array. Doing so permits acoustic cross-coupling that makes REL line arrays produce more than the sum of the parts. The rails on each Predator have cutouts on the bottom so that they fit around AND self-align to the top plate of the subwoofer. Each foot has a soft, closed-cell foam pad on the bottom to protect the line grained composite of the cabinet below.
We strongly advise purchasing furniture restraints from a quality supplier to anchor stacks of Predators to a wall. Use a quality furniture restraint made of nylon webbing or braided steel cable. Please follow the instructions of the restraint you choose and anchor to a structural portion of a wall. Note: loop furniture restraint through one or both of the REL couplers on the topmost HT/1508. Follow the furniture restraint manufacturer’s instructions for attachment to your wall. https://www.consumerreports.
Technical The Predator employs an advanced filter circuit which provides exceptional performance when coupled to the rest of the signal chain of the Sub-Bass System. The amplifier is inherently stable and will retain its characteristics over very long periods of time – important in a unit designed for an exceptionally long working life. These amplifiers are designed to withstand reasonable abuse and overloads. If in doubt, please contact your dealer.
Power Saving Efficiency All REL sub bass system designs utilize a true Power On-Off switch that affords the owner the ability to turn off their unit completely, without having to unplug the A/C mains cord. When a REL sub bass system is switched off using the Power On-Off switch on the rear panel it draws ZERO power. In addition to the power switch there is an ON/AUTO mode switch has two positions. Left is AUTO and right is ON.
HT/1205 Specifications Type: Closed box, front firing woofer Drive Unit: 15 in.
REL Acoustics Limited North Road, Bridgend Industrial Estate . Bridgend, CF31 3TP . United Kingdom Telephone: +44 (0)1 656 768 777 . Fax: +44 (0) 1 656 766 093 Web: www.rel.