Reference 1050W - Subwoofer INFINITY - Free user manual and instructions

Product Type	Subwoofer
Brand	Infinity
Model	Reference 1050W
Diameter	10" (250 mm)
Overall Diameter	10-3/8" (264 mm)
Mounting Depth	4-9/16" (116 mm)
Cutout Diameter	9-1/8" (232 mm)
Voice Coil Diameter	2" (51 mm)
Impedance	4 ohms
Sensitivity (2.83V/1m)	91 dB
Frequency Response	25 Hz - 400 Hz
Power Handling (RMS)	250 W
Power Handling (Peak)	1000 W
Recommended Enclosure Types	Sealed, vented, bandpass
Application	Car audio, mobile
Maintenance	Clean with dry cloth; avoid moisture
Safety Warnings	Hearing loss risk; avoid amplifier clipping; professional installation recommended
Spare Parts / Repairability	Contact authorized Infinity dealer for service
General Information	Part of Infinity Reference series; designed by Infinity Systems, a Harman International company

Frequently Asked Questions - Reference 1050W INFINITY

What type of enclosure should I use for the Infinity Reference 1050W?

The Reference 1050W is optimized for sealed, vented, and bandpass enclosures. Sealed enclosures offer most control and power handling, vented enclosures provide better efficiency in the 40-50 Hz range, and bandpass enclosures maximize SPL at the expense of accuracy.

What is the power handling of the Reference 1050W?

The RMS power handling is 250 watts, and peak power handling is 1000 watts. Power handling varies by enclosure type; sealed boxes allow more power due to better cone control.

What is the impedance of the Reference 1050W?

The Reference 1050W has a single 4-ohm voice coil. (Note: the similar 1052W model offers 2 or 8 ohms.)

Can I mount the Reference 1050W in infinite baffle (free air)?

Infinite baffle mounting is possible but not recommended. Power handling will be greatly reduced (about half the rated RMS) and overexcursion risk increases, potentially damaging the speaker.

What are the dimensions of the Reference 1050W?

Overall diameter: 10-3/8" (264 mm), mounting depth: 4-9/16" (116 mm), cutout diameter: 9-1/8" (232 mm). Voice coil diameter is 2" (51 mm).

What is the frequency response of the Reference 1050W?

The frequency response is 25 Hz to 400 Hz. The subwoofer is designed to reproduce deep bass frequencies for car audio.

How should I clean and maintain the subwoofer?

Clean the exterior with a dry cloth. Avoid moisture and liquid cleaners. Ensure the subwoofer is not exposed to extreme temperatures or humidity. Regular inspection of connections is recommended.

What safety precautions should I take when using the Reference 1050W?

Hearing damage risk: prolonged exposure to high volumes can cause permanent hearing loss. Avoid amplifier clipping (distorted sound) as clipped signals double power and can overheat the voice coil. Professional installation is advised to ensure proper setup.

Where can I find spare parts or get repairs for the Reference 1050W?

Contact your authorized Infinity dealer for service and spare parts. The product has a warranty that requires a valid serial number.

Does the Reference 1050W come with a warranty?

Yes, a valid serial number is required for warranty coverage. Refer to your sales receipt and manual for details. Contact Infinity or Harman International for warranty claims.

USER MANUAL Reference 1050W INFINITY

850w, 1050w, 1052w, 1250w, 1252w

Infinity®

reference series

YOUR CAR AND BASS REPRODUCTION

THANKYOUfor choosing an Infinity ^® Reference Series subwoofer. Reference Series subwoofers are designed to suit a broad range of mobile-audio applications and can be used in a wide variety of enclosure types to produce extended, powerful bass in a limited amount of vehicle space. To ensure maximum subwoofer performance, we strongly recommend that installation be left to a qualified professional. Although these instructions explain how to install a Reference Series subwoofer in a general sense, they do not show box-construction details or exact installation methods for your particular vehicle. If you do not feel you have the necessary experience, do not attempt the installation yourself, but instead ask your authorized Infinity dealer about professional installation options.

Remember to keep your sales receipt with this manual in a safe place so both are available for future reference.

WARNING: Playing loud music in an automobile can permanently damage your hearing, as well as hinder your ability to hear traffic. The maximum volume levels achievable with Infinity speakers, combined with high power amplification, may exceed safe levels for extended listening. We recommend using low volume levels when driving. Infinity accepts no liability for hearing loss, bodily injury or property damage as a result of use or misuse of this product.

Depending on the size of the vehicle's interior listening space, reproduced bass frequencies below 80Hz are boosted by nearly 12dB per octave as frequency decreases in the car. NOTE: This effect, known as the vehicle's transfer function, plays an important part in shaping the overall in-car response and is displayed graphically along with freespace response on the enclosed data sheet for your Reference subwoofer.

CHOOSINGANENCLOSURE

Reference Series subwoofers are optimized to perform best in small sealed, vented and prefabricated bandpass enclosures. While infinite-baffle mounting of Reference Series subs is possible, power handling will be greatly compromised because there's no enclosed volume of air to prevent the speaker's cone from moving past its limit. For this reason, we do not recommend infinite-baffle mounting for Reference Series subwoofers.

You should choose the enclosure you will use based on the type of music you listen to, how much amplifier power you will use for the subwoofer and how much space inside the vehicle you can devote to a subwoofer enclosure.

Because a sealed enclosure provides the most control over the woofer's movement, a woofer mounted in a sealed enclosure will handle more power than a woofer mounted in another enclosure type. Sealed enclosures provide more accurate sonic reproduction than other enclosure types, so they are well suited to all types of music. Sealed-enclosure construction is straightforward and there are many prefabricated sealed enclosures available. Optimum sealed enclosures are always smaller than other types of enclosures optimized for a particular speaker, so they require the smallest amount of space inside the vehicle.

Vented enclosures provide better efficiency in the 40Hz – 50Hz range but this efficiency comes at the expense of sound in the lowest octave (below 40Hz) and at the expense of some control and power handling. If you are using a small amplifier, a vented box will provide more bass output from less power. Vented enclosures are also well suited to a variety of music types.

Because vented enclosures require the volume of the enclosure and the size of the port to have a specific relationship with the characteristics of the woofer, the enclosure must be built exactly to the specifications provided. While there are some prefabricated vented boxes available, matching a prefabricated box to a particular woofer is difficult. If you wish to use a vented enclosure, we strongly recommend having your authorized Infinity dealer build it or verify that your design is correct if you wish to build it yourself. An optimum vented enclosure is always larger than the optimum sealed box for the same woofer and will require more space inside the vehicle.

Bandpass enclosures often provide the most output available from any amplifier and subwoofer combination at the expense of sonic accuracy. If sheer SPL (sound-pressure level) is what you desire most, choose a bandpass enclosure. Bandpass-enclosure design is very tricky and the aid of a computer and enclosure design software is necessary. If you are an experienced installer or have some woodworking experience, you may wish to build the enclosure described in the enclosure design sheet included with this woofer. Fortunately, there are many prefabricated bandpass boxes available and they are all optimized to extract the most output possible from any woofer. Bandpass enclosures can be quite large and may require a lot of space inside your vehicle.

POWERHANDLINGLIMITATIONS

The power handling capability of any woofer is related to both its ability to dissipate heat and the maximum excursion limits of its cone. Once the speaker's voice coil moves outside the magnetic gap, power can no longer be converted into motion and all the amplifier's power is converted into heat in the voice coil. This voice coil heating is the largest detriment to speaker longevity, so overexcursion should be avoided. Since speaker-cone excursion is different for each type of enclosure, power handling is different for each enclosure.

Sealed enclosures exert the most control over the motion of a subwoofer because the air inside the box acts like a spring against the motion of the woofer cone. Larger boxes allow for more excursion, thus providing more low-frequency output for the amount of power used. When placed in a sealed box much larger than the Vas of the subwoofer, it will perform as if it were in an infinite-baffle installation.

Vented and bandpass enclosures have the lowest amount of excursion for the amount of sound output. This is a result of port output reinforcing the sound output from the woofer. The mass of the air contained in the port provides an acoustic load on the woofer's cone at the tuning frequency, and this added mass decreases woofer-cone excursion. Vented boxes do not provide adequate woofer control when driven below the tuned frequency (Fb), so proper design is important. A vented bandpass box will have the lowest overall cone excursion, provided a subsonic filter is used.

• Voice coil overheating and burning due to overexcursion are often caused by overdriving an amplifier into “clipping.” A severely clipped signal, or square wave, contains nearly twice the power of a clean sine wave at the same level. Bass that sounds broken up and distorted at higher volumes is usually indicative of an amplifier that is clipping and being asked to deliver power beyond its ability.
• Infinite-baffle or "free air" mounting applications allow for greater cone excursion than subwoofers mounted in an enclosure. In order to compensate, the power handling of the subwoofer will likely be half its rated power in this application.
• Study the excursion curves on the enclosed Reference Series data sheet and note the differences for different enclosure applications. The type and size of box used will produce different excursion demands on the enclosed subwoofer and, consequently, different levels of power handling. As long as the recommended enclosure parameters are used, the subwoofer will perform properly in its enclosed environment. However, any design deviation may result in less than optimum performance, and may also subject the subwoofer to overexcursion (i.e., where the voice coil leaves the gap) that can eventually damage the speaker. For additional help with this issue, please contact your authorized Infinity dealer.

referenceseries

SPECIFICATIONS

850w1050w1052w1250w1252w

Diameter: 8" (200mm) 10" (250mm) 10" (250mm) 12" (300mm) 12" (300mm)

Sensitivity @ 2.83V/1m: 91dB 91dB 91dB 93dB 93dB

Power Handling (RMS): 200W 250W 250W 300W 300W

Power Handling (Peak): 800W

Frequency Response: 30Hz – 400Hz

Impedance

Voice-Coil Diameter: 2" (51mm)

Mounting Depth: 4-5/16" (110mm)

Overall Diameter: 8-1/4" (210mm)

Cutout Diameter: 7-3/16" (183mm)

1000W 1000W

25Hz - 400Hz

4 ohms

2" (51mm)

4-9/16" (116mm)

10-3/8" (264mm)

9-1/8" (232mm)

1000W

25Hz - 400Hz

2 or 8 ohms

2" (51mm)

4-9/16" (116mm)

10-3/8" (264mm)

9-1/8" (232mm)

1200W

23Hz - 400Hz

4 ohms

2" (51mm)

5-1/16" (129mm)

12-7/16" (316mm)

11-3/16" (284mm)

1200W

23Hz - 400Hz

2 or 8 ohms

2" (51mm)

5-1/16" (129mm)

12-7/16" (316mm)

11-3/16" (284mm)

A valid serial number is required for warranty coverage.

Features, specifications and appearance are subject to change without notice.

These products are designed for mobile applications and are not intended for connection to the mains.

Infinity Systems • 250 Crossways Park Drive, Woodbury, NY 11797 USA

www.infinitysystems.com

© 2006 Harman International Industries, Incorporated. All rights reserved. • Part No. INFREFSUBS 10/06

H A Harman International Company

Declaration of Conformity

We, Harman Consumer Group International

2, route de Tours

declare in own responsibility that the products described in this owner's manual are in compliance with technical

standards:

EN 61000-6-3:2001

EN 61000-6-1:2001

Klaus Lebherz

Harman Consumer Group International

Château du Loir, France 10/06