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Infinity BU-2 manual

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Table of contents for the manual

  • Page 1

    Owner’ s Manual Part # 939-8123 ® Power ed Subwoofer Model BU-2 BU 2[...]

  • Page 2

    THIS INFINITY PRODUCT IS DESIGNED FOR 120-VOL T USE ONL Y! FOR DET AILED SAFETY PRECAUTIONS, PLEASE SEE FOLLOWING P AGE IN THIS OWNER'S MANUAL FOR “IMPOR T ANT SAFETY INSTRUCTIONS . ” The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage?[...]

  • Page 3

    IMPOR T ANT SAFETY INSTRUCTIONS 1) Read Instructions – All the safety and operating instructions should be read before the product is operated. 2) Retain Instructions – The safety and operating instructions should be retained for future reference. 3) Heed Warnings – All warnings on the product and in the operating instructions should be adher[...]

  • Page 4

    1 ◆ Power ed Subwoofer BU-2 – Owner’ s Manual A BOUT T HIS P RODUCT ... I MPOR T ANT ! V OLUME C ONTROL ... I MPOR T ANT ! I NTRODUCTION The Infinity BU-2 Powered Subwoofer has been designed to enhance the bass frequencies of any audio system. This subwoofer may be used with speakers of any size. Obviously , the gr eatest bass enhancement wil[...]

  • Page 5

    Power ed Subwoofer BU-2 – Owner’ s Manual ◆ 2 P OSITION W ITHIN A R OOM W ILL S TRONGL Y I NFLUENCE P ERFORMANCE ... P OSITIONING Since the installation of a subwoofer is somewhat more complicated than installing full-range speakers, it is essential you read this section very carefully prior to connecting the subwoofer to your system. Should [...]

  • Page 6

    Figur e 1. This view shows the subwoofer positioned behind the right-channel satellite speaker to r e-create the actual location of bass instruments in an or chestra. Here are some useful hints: 1. Experimentation with the port direction may be useful. At times directing the port away from the listening ar ea (to the side) may be advantageous becau[...]

  • Page 7

    Power ed Subwoofer BU-2 – Owner’ s Manual ◆ 4 C ONTROLS ... B EFORE C ONNECTING Y OUR S UBWOOFER ... Figur e 2. I DENTIFICA TION O F C ONTROLS A ND C ONNECTING AC P OWER Refer to Figure 2 to identify the contr ols of your subwoofer’ s internal amplifier: ❶ Auto Power: on/off switch for auto-sensing of audio signal ❷ High Level Input and[...]

  • Page 8

    5 ◆ Power ed Subwoofer BU-2 – Owner’ s Manual C ONNECTING Y OUR S UBWOOFER There are several ways to connect your BU-2 subwoofer . Read this section carefully to determine which method is best suited for your installation. The BU-2 may be fed directly with a low-level signal taken fr om your preamplifier’ s output by using the second set of[...]

  • Page 9

    Figur e 3b. Y ou can use this method (2 “Y”connectors) if your pr eamp has only one set of outputs. Figur e 4. Method when using single subwoofer or two subwoofers. C ONNECTING Y OUR S UBWOOFER ( CONT ’ D ) When using a single subwoofer , you MUST use a pair of stereo low-level leads from your preamplifier’ s outputs. When using two subwoof[...]

  • Page 10

    7 ◆ Power ed Subwoofer BU-2 – Owner’ s Manual Figur e 5. Method when using single subwoofer . Figur e 6. Method when using two subwoofers. C ONNECTING Y OUR S UBWOOFER ( CONT ’ D ) The BU-2 subwoofer may be connected to your system using the HIGH-LEVEL INPUTS (4) on the plate located on the rear panel of the subwoofer . Use ordinary lamp co[...]

  • Page 11

    Figur e 7. Method when connecting one subwoofer to satellites. I MPOR T ANT ! Figur e 8. Method when connecting two subwoofers to satellites. C ONNECTING Y OUR S UBWOOFER ( CONT ’ D ) Depending on whether you are using one or two BU-2 subwoofers, connecting your satellites can be accomplished in one of two ways. If you are using a single BU-2 wit[...]

  • Page 12

    9 ◆ Power ed Subwoofer BU-2 – Owner’ s Manual S ET C ONTROLS ... P OWER O N ... A DJUST V OLUME ... F REQUENCY C ONTROL ... R OOM P LACEMENT ... O PERA TION 1. Initially set the BU-2’ s V olume control ❹ (Fig. 2) to 12 o’clock. 2. Initially set the BU-2’ s Frequency control ❻ (Fig. 2) to 12 o’clock. 3. Slide the BU-2’ s Phase sw[...]

  • Page 13

    Power ed Subwoofer BU-2 – Owner’ s Manual ◆ 10 A W ORD O F A DVICE The Low-Frequency Rollof f and V olume controls may be set anywher e within their rotation. However , it will be a most unusual circumstance if you have to set the V olume control completely clockwise. This may indicate an unbalanced condition in your system (too much bass) or[...]

  • Page 14

    11 ◆ Power ed Subwoofer BU-2 – Owner’ s Manual I MPOR T ANT ! I MPOR T ANT ! I MPOR T ANT ! C ARE O F Y OUR S UBWOOFER Y our Infinity subwoofer cabinet is finished with a heavy-duty , high-quality vinyl which requires very little maintenance. Keep the cabinet clean by dusting it occasionally with a damp cloth or use a good quality furniture p[...]

  • Page 15

    Power ed Subwoofer BU-2 – Owner’ s Manual ◆ 12 P ERFORMANCE D ATA D RIVE U NITS F INISH D IMENSIONS S PECIFICA TIONS – BU-2 Frequency Response: 30 ~ 150Hz, ±3dB Input Sensitivity: Low Level: 70mV High Level: 1.7V Input Impedance: Low Level: 12k Ω High Level: 5k Ω Output: 100W rms Driver: 12" woofer Crossover Fr equency: 50 ~ 200Hz[...]

  • Page 16

    P/N: 939-8123 ® Infinity Systems, Inc. 250 Crossways Park Drive W oodbur y , NY 11797 USA (516) 496-3400 • F AX (516) 682-3526 www .infinitysystems.com[...]