Comes with 3 year StereoNeeds warranty. Check voltages at amplifier terminals with VOM. We will not ship to international destinations which includes Canada- no exceptions. Adjust the crossover frequency to limit bass, and provide increased system volume with less distortion. We can only ship to the Continental US. The time now is Refer to the chart below to determine minimum wire-gauge size. Choosing a Location and Mounting the Amplifier Choose a mounting location in the trunk or cargo area where the amplifier will not be dam- aged by shifting cargo.

Indicates the amplifier is on. Minimum speaker impedance for stereo operation is 2 ohms. Full range preamp outputs are provided facilitating multiple amplifier hookups without the need for costly Y-adapters or signal splitters. For vented enclosures, the DBO should be used as a subsonic filter to reduce overexcursion of the woofers. Full-range preamp outputs faciliate use of multiple amplifiers without the need for noisy and expensive adapters or signal splitters. If not, check the wiring, especially the remote connection from the source unit. And every Infinity Reference amplifier is certified to deliver power as advertised.

Minimum speaker impedance for stereo operation is 2 ohms. Optional remote level bass control available.

Infinity reference a Amp – VW T4 Forum – VW T5 Forum

The a comes outfitted with three variable 12dB per octave electronic crossovers allowing you to optimize system tuning based on speaker selections and location.

Reference subwoofer amplifier with two woofer connections. Figures 3 and 4 show how to configure the Reference subwoofer amplifiers models a, a and a.

Reconnect the – negative lead to the vehi- cle’s battery. Search the history of over billion web pages on the Internet. User Name Remember Me?


Reference A Power Amplifier by Infinity Systems, Inc. Valuation Report by

Refer to the mounting instructions accompanying the lOOrc. This allows you to enhance the bass output of your seies at 50Hz up to 12dB. And every Infinity Reference amplifier is certified to deliver power as advertised. Amplifier may need service; see enclosed warranty card for service information. In order that we may better serve you should you require warranty service for your new amplifier, please retain your original purchase Infinity’s Variable Bass EQ boosts your bass output when you need a little extra low-end kick.

Indicates the amplifier is being overdriven, enhance low-frequency reproduction in a vehicle. Page of 8 Go.

Reference 7521A

The a comes outfitted with a variable 12dB per octave electronic crossover allowing you to optimize system tuning based on speaker location and accompanying loudspeaker components. Check vehicle charging system. Allows a high-pass signal through to the speakers; should be used with most loudspeakers can protect your full-range speakers from being overdriven with low frequencies, one cause of speaker damage.

The W KS-DR bridgeable 2 channel power amplifier is designed to give superb stereo performance. Mount the amplifier so that it remains dry – never mount an amplifier outside the vehicle or in the engine compartment. Playing loud music in an automobile can hinder your ability to hear traffic and permanently damage your hearing.

Find all posts by dodgyT5. Amplifier cooling is essential for proper amplifier operation. Conventional bass-boost circuits only increase bass at a fixed referene, and cause the amplifier to consume considerable power. Sand away any paint from this location; use a star-type-lock washer to secure the connection. Find all posts by Spanners. For simplicity, Figures 3 and 4 do not show power, remote and input connections.


Remove Advertisements Sponsored Links. Infinity reference a Amp Superb quality amp. The DBO allows you to adjust the frequency 20Hz – 80Hz as well as the boost level up to 12dB; see Figure 14allowing you to fine-tune the bass in your system to optimize performance.

Allows bass to pass through to the speakers; should be selected when powering subwoofers. Thank You a ,aa ,aa ,a instructions Thank you for purchasing a Reference Apm amplifier. To print the manual completely, please, download it. See Figure 1 for connection location. We recommend listening at low or moderate levels while driving your car.

Infinity Reference Series 7521A – car – amplifier Series

If your installation differs markedly, you will need to adjust the wire gauge accordingly. The speaker outputs for the source unit should be connected to the amplifier using the supplied connector square four-wire plug. If you have any questions, problems, warranty issues, or qmp please contact us.