Expert Service 1-661-257-9993 [Hours]

JBL GTi Speakers with MB Quart Amplifier

JBL 660GTi 60th Anniversary Edition GTi Series Competition Speaker System + MB Quart ZA1-640.4 4-Channel Z-Line Series SQ Amplifier

We apologize

This item has been discontinued

Item Added to Cart

JBL GTi Speakers with MB Quart Amplifier

JBL 660GTi 60th Anniversary Edition GTi Series Competition Speaker System + MB Quart ZA1-640.4 4-Channel Z-Line Series SQ Amplifier

$613.30

Keep Shopping

Get Added Peace of Mind with SquareTrade

Why SquareTrade?

  • The #1-Rated Protection Plan
  • 5-Day Service Guarantee & Free Shipping
  • Protection from Normal, Everyday Use
You have added a warranty
$77.99
Add Warranty
3 years of protection

NVX XKIT44 4-Gauge 4-Channel Wiring Kit

4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

$89.99

Add
Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during installation.

$11.99

Add
Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

This Big 3 Kit features HyperFlex cable and comes with everything you need to upgrade your factory power and ground wire.

$141.83

Add

Don't see the accessory you're looking for?
View all available accessories for the JBL GTi Speakers with MB Quart Amplifier.

Get FAST answers from customers ASK a Question See questions answers

JBL 660GTi

** 60th Anniversary Edition GTi Series Competition Speaker System **1200 Watt 6.5" GTi Series 2-Way Reference Component Speaker System
Quantity: 1

General Features:

  • 6-1/2" GTi Series Special Edition 2-way Component Speakers System
  • Lowest distortion driver produced by Harman - Among ALL Harman brands (Home, Pro, Car, Portables)!
  • Power Handling:
    • Peak: 1200 watts per set / 600 watts each side
    • RMS: 300 watts per set / 150 watts each side
  • Recommended Power Range: 10 - 150 watts RMS per channel
  • Cast aluminum basket frame:
    Ensures protection of sensitive internal components as well as providing structural integrity for the motor and moving assembly
  • Nomex® Spider:
    Maintains linearity of motor movement
  • Spider-Landing Vents:
    Greatly reduce distortion from any unwanted mechanical noise
  • Copper Polepiece Cap:
    Not only will it provide additional linearity support, but it is also designed to reduce intermodulation distortion
  • Polished and Flared Polepiece Vent:
    Maximizes air movement flowing in and out of the speaker, allowing for greater cooling, performance, and minimal distortion
  • Vented Gap Cooling Ports:
    In conjunction with the Polepiece Vent, the design allows air to pass through the voice coil-- effectively cooling it while in operation
  • Flux Stabilization Ring:
    Stabilizes static magnetic field, minimizing coil inductance when voice coil moves inward
  • Competition-Level Crossover:
    Features low-loss, low-ESR polypropylene capacitors, tweeter level adjustment, frequency contour (waveguide) controls, and bi-amp capable terminals
  • Neodymium Magnet Structure:
    Optimizes performance thanks to its high flux density; also provides additional space for proper internal cooling due to its compact size
  • Ultrarigid Kevlar-cone woofer and dustcap
  • NBR (Nitrile Butadiene Rubber) surround
  • 1" (25mm) edge-driven EOS tweeter with constant-directivity waveguide
  • 35° Wide listening window (compared to 30° with other speakers)
  • 2" Premium quality aluminum edge-wound voice coil that virtually eliminates any distortion at the lowest frequencies and highest power handling
  • Crossover Network:
    • Wire-wound Precision Resistors with Integral Heatsink
    • Polypropylene Caps
    • Air Core Coils
    • Bi-Amp Capable Connections
    • Tweeter Level Adjustment
    • Frequency Contour Adjustment
    • Removable Top Cover
  • Top-mount Depth: 2-23/32"
  • Cutout Dimensions: 5-1/16"
  • 4 ohms impedance
  • Crossover Frequencies: Outboard, 2500Hz
  • Frequency Response: 50 - 30,000 Hz
  • Sensitivity: 92 dB
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

  • Priced Per Complete Component System: 2 midwoofers, 2 tweeters and 2 crossover networks.

Check out the JBL 660GTi Owner's Manual

MB Quart ZA1-640.4

640W 4-Channel Z-Line Series Class SQ A/B Amplifier
Quantity: 1

General Features:

  • Z-Line Series 4-Channel Class SQ A/B Amplifier
  • RMS Power Rating:
    • 4 ohms: 80 watts x 4 chan.
    • 2 ohms: 160 watts x 4 chan.
    • Bridged 4 ohms: 320 watts x 2 chan.
  • Sonic Electronix Certified Power Rating*:
    • 4 ohms: 98 watts x 4 chan.
    • 2 ohms: 157watts x 4 chan.
    • Bridged 4 ohms: 313 watts x 2 chan.
  • Fluid-FETS hand selected insulated MOSFETS
  • Focused mass heat sink designs
  • Q-Stasis preamp stage with wide input range
  • Top mounted controls for simple setup & adjustment
  • Elaborate preamplifier with extended control
  • Easy access mounting tabs for a secure install
  • LED power (green) and protect (red) indicators
  • Selectable 2Ch/3Ch/4Ch Modes
  • Selectable HPF/LPF /Full Crossover Settings
  • Input sensitivity: 200mV - 6V
  • Frequency Response: 10 - 45,000 Hz
  • Signal to Noise Ratio: >90
  • Total Harmonic Distortion (THD): <0.5%
  • Variable Bass Boost: 0 to +12dB bass boost at 45Hz
  • Variable low-pass filter: 30- 250 Hz
  • Variable high-pass filter: 60 - 13,000 Hz
  • Fuse Rating: 35A x 2
  • CEA-2006 compliant amplifier
  • Dimensions: 9.20"W x 16.50"L x 2.20"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

*The Sonic Electronix Certified Power Ratings listed are based on a test of a specific sample amplifier. Actual power ratings may slightly vary between amps.

NVX XKIT44

100% Copper, 4-Chan. True Spec 4 Gauge Amp Installation Kit w/RCA Interconnect & 60 ft Speaker Cable
Quantity: 1

Amplifier Kit Features:

  • Complete 4 Gauge Amplifier Installation Kit
  • Designed specifically for car audio systems up to 1000 watts RMS
  • Premium power and ground wire provides optimal power transfer
  • Made from silver-tinned 100% virgin copper for a pure uninterrupted transfer of power and signal
  • Direct-connect engineering
  • Fewer connections for less signal distortion
  • ANL/mini ANL Fuse holder offers ideal protection for high powered systems
  • Envy-Flex cable and wire
  • Full spec cable is true to gauge
  • Strand Count: 1862
  • BC-5W2 Compliant
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Kit includes:

  1. 20 ft. (6.1 meters) Frosted Blue 4 gauge main power wire with seamless crimp ring terminal and 6 ft. expandable sleeving
  2. 3 ft. (.91 meters) Frosted Gray 4 gauge main ground wire with seamless crimp ring terminal
  3. One 16 ft. (5 meters) 4-channel twisted construction RCA interconnect Cable (NVX XIV45)
  4. 20 ft. (6.1 meters) Clear 18 gauge remote lead wire
  5. 60 ft. (18.29 meters) Frosted Black/Blue 16 gauge speaker wire
  6. One NVX XMANL04 ANL/Mini-ANL fuse holder with 100 amp Mini-ANL fuse
  7. One 1/2" black rubber firewall grommet
  8. Two black 4 gauge nickel-plated spade terminals
  9. Three blue 16 gauge spade lugs
  10. Four 16 gauge quick disconnects
  11. Two black 16 gauge spade terminal
  12. Two 18 gauge red butt connector
  13. Ten 6" black zip ties

Front Speaker Specifications

Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
6-1/2"
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
2-way Component System
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Dome
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Textile
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Kevlar Fiber
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Nitrile Butadiene Rubber (NBR)
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
1200 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
300 watts
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
92 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
50 - 30000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
2-23/32\\\""
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Yes

Amplifier Power Specifications

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

80 watts x 4 channels
RMS Power @ 2 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

160 watts x 4 channels
Bridged RMS Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the RMS power created once an amplifier is bridged.

320 watts x 2 channels

Amplifier Specifications

Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

AB
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
4
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

1280 watts
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

640 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
4 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
<0.5%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
No
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
No
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

60 - 13,000 Hz
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

30 - 250 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
>90 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 12 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
35A x 2 

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
0%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
0.0
Value
0.0
Features
0.0
Design
0.0
Usability
0.0
Accessory Tools and Products

Accessories added

NVX XKIT44 4-Gauge 4-Channel Wiring Kit

4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

Your Price $89.99

Belva BAK44 4-Channel 4 Gauge Amplifier Installation Kit

Complete 4-Channel CCA 4 Gauge Amp Kit with RCA Cables and Speaker Wire

Your Price $29.99

Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during installation.

Your Price $11.99

Scosche TK12 Car Stereo Installation Kit

Includes panel removal tool, wire cutter/stripper, test light, RCA cable runner, screwdriver, and more!

Your Price $18.99

18 Butt Connectors, 2 Ring Terminals, and Zip Ties

Great for connecting your car stereo wires to the harness

Your Price $4.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

This Big 3 Kit features HyperFlex cable and comes with everything you need to upgrade your factory power and ground wire.

Your Price $141.83

XS Power BIG3XS 1/0 Gauge Big 3 Upgrade Kit

The XS Power Big 3 Kit features 100% OFC XP Flex cable and includes everything you need to upgrade your factory power and ground wire.

Your Price $92.52

XS Power BIG3XP 1/0 Gauge Big 3 Upgrade Kit

The Big 3 Kit comes with everything you need to upgrade your factory power and ground wire.

Your Price $49.99

Hide answersShow all answers | Sort by
No questions have been asked about this item. Be the first!

Product Summary

Manufacturer

Model Number

660GTi_ZA1-640.4_XKIT44

Weight

46.90lbs

Internal SKU

660gti_za16404_xkit44

Internal Product ID

110745

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: JBL GTi Speakers with MB Quart Amplifier