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Infinity BU-1 - page 1
Owner’ s Manual Part # 930-7304 ® Power ed Subwoofer Model BU-1 BU 1 ...
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Infinity BU-1 - page 2
THIS INFINITY PRODUCT IS DESIGNED FOR 120-VOL T USE ONL Y! FOR DET AILED SAFETY PRECAUTIONS, PLEASE SEE P AGE 13 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” with ...
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Infinity BU-1 - 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 ...
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Infinity BU-1 - page 4
Power ed Subwoofer BU-1 – Owner’ s Manual ◆ 1 A BOUT T HIS P RODUCT ... I MPOR T ANT ! V OLUME C ONTROL ... I MPOR T ANT ! I NTRODUCTION The Infinity BU-1 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 ...
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Infinity BU-1 - page 5
2 ◆ Power ed Subwoofer BU-1 – Owner’ s Manual 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 ...
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Infinity BU-1 - 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 ...
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Infinity BU-1 - page 7
4 ◆ Power ed Subwoofer BU-1 – Owner’ s Manual 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 AC Power: on/off switch for AC power to amplifier ❷ High-Level Input and Output T ...
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Infinity BU-1 - page 8
Power ed Subwoofer BU-1 – Owner’ s Manual ◆ 5 C ONNECTING Y OUR S UBWOOFER There are several ways to connect your BU-1 subwoofer . Read this section carefully to determine which method is best suited for your installation. The BU-1 may be fed directly with a low-level signal taken fr om your preamplifier’ s output by using the second set of ...
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Infinity BU-1 - 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 ...
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Infinity BU-1 - page 10
Power ed Subwoofer BU-1 – Owner’ s Manual ◆ 7 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-1 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 ...
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Infinity BU-1 - 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-1 subwoofers, connecting your satellites can be accomplished in one of two ways. If you are using a single BU-1 wit ...
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Infinity BU-1 - page 12
Power ed Subwoofer BU-1 – Owner’ s Manual ◆ 9 S ET C ONTROLS ... P OWER O N ... A DJUST V OLUME ... F REQUENCY C ONTROL ... R OOM P LACEMENT ... O PERA TION 1. Set the subwoofer’ s V olume control ❹ (Fig. 2) to 12 o’clock. 2. Set the subwoofer’ s Low-Frequency Rolloff contr ol ❺ (Fig. 2) to 12 o’clock. 3. Switch the subwoofer’ s ...
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Infinity BU-1 - page 13
10 ◆ Power ed Subwoofer BU-1 – Owner’ s Manual 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 ...
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Infinity BU-1 - page 14
Power ed Subwoofer BU-1 – Owner’ s Manual ◆ 11 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 ...
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Infinity BU-1 - page 15
12 ◆ Power ed Subwoofer BU-1 – Owner’ s Manual P ERFORMANCE D ATA D RIVE U NITS F INISH D IMENSIONS S PECIFICA TIONS – BU-1 Frequency Response: 45 ~ 150Hz, ±3dB Input Sensitivity: Low Level: 50mV High Level: 1V Input Impedance: Low Level: 10k Ω High Level: 200k Ω Output: 50W RMS Driver: 8" woofer Crossover Fr equency: 50 ~ 150Hz ( ...
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Infinity BU-1 - page 16
Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice. ©1999 Infinity Systems, Inc., 250 Crossways Park Drive, Woodbury, NY 11797 USA (800) 553-3332 www.infinitysystems.com ...
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