Decade DS55 - Car Speaker JBL - Free user manual and instructions

Brand	JBL
Model	Decade DS55
Product Type	Car Speaker (Coaxial)
Speaker Size	5-1/4 inches
Speaker Type	2-way
Impedance	4 ohms
Recommended Amplifier Power	5 – 60 watts RMS
Frequency Response	75 Hz – 20 kHz
Sensitivity	92 dB (2.83V @ 1 meter)
Mounting Depth (Drop-in)	1-3/4 in (45 mm)
Cut-Out Diameter	4-5/8 in (118 mm)
Mounting Type	Direct replacement for factory speakers
Installation Precautions	Disconnect battery negative; wear safety glasses; check clearances; avoid fuel/brake lines
Care Instructions	Clean grilles with slightly damp cloth; no solvents or cleaners on grilles or cones
Power Handling Note	Avoid clipping; reduce volume if distortion heard
Safety Warning	Loud volumes can cause hearing loss; use low levels in car
Compliance Standards	EN 50091-1:1992, EN 50082-1:1992
Country of Origin	Made in China

Frequently Asked Questions - Decade DS55 JBL

What is the impedance of the JBL Decade DS55 speaker?

The impedance is 4 ohms, which is standard for most car audio systems.

What amplifier power range is recommended for these speakers?

The recommended amplifier power range is 5 – 60 watts RMS. They can produce reasonable volume with low power but benefit from more power.

How do I install the JBL Decade DS55 speakers?

Installation requires disconnecting the vehicle battery, removing the original speakers, and mounting the new ones using the provided screws. For door or rear-deck installations, check window and mechanism clearances. If unsure, seek professional installation.

Can I use these speakers with a high-power aftermarket amplifier?

Yes, but ensure the amplifier is not driven into clipping. Clipping produces distorted sound and can damage speakers. Keep volume within the amplifier’s rated power range.

How should I clean the speaker grilles?

Use a slightly damp cloth to wipe the grilles. Do not use any solvents, cleaners, or apply liquids directly to the speaker cones.

What is the frequency response of the DS55?

The frequency response is 75 Hz to 20 kHz, covering bass to high frequencies.

Are the JBL Decade DS55 speakers a direct replacement for factory speakers?

Yes, they are designed as a direct replacement for most factory 5-1/4-inch speakers. They do not include grilles or trim rings, so they fit into existing openings.

What safety precautions should I take during installation?

Always wear protective eyewear when cutting or drilling. Disconnect the negative battery terminal to avoid shorts. Check for fuel lines, brake lines, and wiring before drilling.

Why is my sound distorted even at moderate volume?

Distortion is usually a sign of amplifier clipping, meaning the amplifier is being pushed beyond its rated power. Reduce the volume to prevent potential speaker damage.

Where can I find the full user manual for the JBL Decade DS55?

The full manual is available for free download on notice-facile.com or from JBL's official website. The manual includes detailed specifications and installation instructions.

USER MANUAL Decade DS55 JBL

Close-up of a speaker grille with concentric arcs and two white dots at the top (no text or symbols)

GENUINE JBL

JBL

Thank you for purchasing a JBL Decade™ Series multielement speaker system. We've organized this manual to make your installation as simple and trouble-free as possible. Please read it thoroughly before proceeding. Remember to keep your sales receipt with this manual in a safe place so both are available for future reference.

Important

Installation of automotive stereo components can require extensive experience with a variety of mechanical and electrical procedures. Although these instructions explain how to install a JBL

Decade Series multielement speaker system in a general sense, they do not show the exact installation methods for your particular vehicle. In many cases, removing door or rear-deck panels is necessary to gain access to the mounting location. This procedure may require specialized tools and a skilled installer. If you do not feel you have the tools or experience necessary, do not attempt the installation yourself, but instead ask your authorized JBL dealer about professional installation options.

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 JBL speakers, combined with high power amplification, may exceed safe levels for extended listening. We recommend using low volume levels when in your car. JBL accepts no liability for hearing loss, bodily injury or property damage as a result of use or misuse of this product.

Installation

Note: The DS35, DS645 and DS75 speakers are designed for direct replacement of factory speakers. Therefore, they do not contain the grilles and trim ring shown in Fig 1. Installation of these models simply entails reversing the steps taken to remove the original speakers.

Installation Warnings and Tips

• Always wear protective eyewear when using any tools.
- Turn off all audio systems and other electrical devices before you start. Disconnect the negative (−) lead from your vehicle's battery.
- Keep speakers in their package until final installation. When moving a speaker, always rest it with the cone or dome facing up. Never use force to install any speaker.
- Check clearances on both sides of a planned mounting surface before drilling any holes or installing any screws. Remember that the screws can extend behind the surface.
- At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines and electrical wiring. Use extreme caution when cutting or drilling in and around these areas.

Caution: In some cars, fuel tanks may be located directly beneath the rear deck. Check for adequate speaker-basket clearance before considering this location!

• Before drilling or cutting holes, use a utility knife to remove unwanted fabric or vinyl in order to keep material from snagging in a drill bit or saw.
• For door installations, check the clearance with the windows throughout the range of the window's travel, and verify that a mounted speaker will not interfere with the window crank or power-window mechanism.
• If mounting speakers elsewhere, check for clearance around rear-deck torsion bars, glove box or other structural elements.
• Do not mount speakers where they will get wet.

Specifications

JBL Decade Series

Type: 3-1/2" 2-way 4" 2-way 5-1/4" 2-way 4" x 6" 2-way
Speaker Impedance: 4 ohms 4 ohms 4 ohms 4 ohms
RecommendedAmplifier Power Range: 5 – 40 watts 5 – 50 watts 5 – 60 watts 5 – 75 watts
Frequency Response: 110Hz – 20kHz 100Hz ~ 20kHz 75Hz ~ 20kHz		100Hz – 20kHz
Sensitivity(@ 2.83V, 1 meter):	90dB	91dB	92dB	91dB
Mounting Depth, Drop-in:	1-7/16" (37mm)	1-11/16" (43mm)	1-3/4" (45mm)	1-3/4" (45mm)
Cut-Out Diameter:	3-1/4" (83mm)	3-13/16" (97mm)	4-5/8" (118mm)	3-3/8" x 5-11/16"(86mm x 145mm)

A Note on Power Handling JBL Decade Series speakers are designed to produce reasonable volume levels with little amplifier power. However, the addition of a subwoofer and an amplifier will enhance the dynamic range of your system and help overcome the ambient noise in a moving vehicle. These speakers are designed to handle the power of a dedicated amplifier driven at or below its rated power. If an amplifier is driven far above its rated power, the output signal will "clip," and the additional power present in a clipped signal can damage the speakers. Distorted or "fuzzy" sound from your speakers is an indication that the amplifier has exceeded its rated power and you should reduce the volume level.

General Care

The loudspeaker grilles may be cleaned with a slightly damp cloth. Do not use any cleaners or solvents on the grilles or the speaker cones.

	DS65 DS755	DS965
Type:	6-1/2" 2-way	5" x 7"/6" x 8" 2-way	6" x 9" 3-way
Speaker Impedance: 4 ohms 4 ohms 4 ohms
RecommendedAmplifier Power Range: 5 – 75 watts 5 – 100 watts		5 – 100 watts
Frequency Response: 65Hz ~ 20kHz	50Hz ~ 20kHz	45Hz ~ 20kHz
Sensitivity(@ 2.83V, 1 meter):	92dB	93dB	93dB
Mounting Depth, Drop-in:	1-13/16" (47mm)	2-3/16" (56mm)	2-15/16" (75mm)
Cut-Out Diameter:	5-1/16" (129mm)	5" x 7-3/16"(127mm x 183mm)	6-1/16" x 8-3/4"(154mm x 223mm)

Declaration of Conformity

We, JBL Europe A/S

Kongevejen 194B

DK-3460 Birkelou DENMARK

declare in own responsibility, that the products described

in this owner's manual are in compliance with technical

standards:

EN 50081-1:1992

EN 50082-1:1992

Steen Michaelsen

JBL Europe A/S

JBL Consumer Products

250 Crossways Park Drive

Woodbury, NY 11797

www.jbl.com

H A Harman International Company

Part No. DSSPKRS2OM

Made in China