Cobra SPX 7700

Radar detector

  • Cobra SPX 7700


  • Cobra SPX 7700


Our take on the Cobra SPX 7700

by Dominic Devito

A compact, cunning detector

Don't take chances when you're on the road. Cobra's SPX 7700 radar detector makes quick work of all incoming threats over very long distances, so you can keep on truckin'. You'll see all the info you need on its user-friendly 1.25" color OLED screen, allowing you to take decisive action without delay. The detector keeps you informed of most radar and laser types — including instant-on POP radar — and a safety band so you'll know about nearby road construction, wrecks, and other developments.  Approaching emergency vehicles also get their own signal, thanks to the SPX 7700's strobe alerts

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Stay "under the radar"

The SPX 7700's pocket-sized chassis houses super-fast circuitry that gives you a rapid, reliable heads-up to nearby problems. The detector offers complete immunity to VG-2 and Spectre I radar detector detection devices, warning you when they're in proximity. You can follow the 5-level digital strength signal meter to learn how close you are to the signal's source, and what kind of threat you're facing.

Color graphics and voice alerts

Not only will you get audible tones to let you know what kind of bands are being detected, you'll also hear spoken voice alerts, so you can decide your course of action without having to take your eyes off the road. The SPX 7700's OLED screen sports helpful color graphics that give you an instant status report, including the radar signal's band, strength, and frequency, or the laser pulse rate.

Advanced muting functions

The SPX 7700 features the latest IntelliMute functions which can help eliminate audible alerts that you don't really need to hear. You can set the IntelliMute to activate depending on your car engine's RPM — set an activation point, and the detector will turn IntelliMute above or below a specific RPM. This way, you'll still be informed without hearing alerts when you're driving slowly. IntelliMute can also help you avoid detection by VG-2 and Spectre I at slower speeds.

Cobra's got you covered

Cobra's IntelliShield technology lets you choose four city modes that virtually eliminate false alarms. Turn on the dim mode to give your eyes a break at night. And you can always be sure about your car battery's voltage with the SPX 7700's low-voltage warning.


  • radar detector
  • suction-cup mount windshield bracket kit and hook-and-loop fastener
  • straight power cord
  • 1.25" color OLED graphic display and headphone jack
  • detects 7 radar bands, 6 laser bands, 2 safety bands (including strobe alerts)
  • voice and audio tone alerts for radar, laser, and POP
  • 4 city modes
  • 360° laser protection
  • VG-2 and Spectre I immunity and alerts
  • Spectre IV+ alerts
  • display includes signal strength meter
  • dim/dark and auto-mute modes
  • IntelliMute suppresses audible alerts based on engine RPM
  • car battery low-voltage warning

Sorry, but we cannot ship radar detectors to Virginia or the District of Columbia.

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
X Band Radar Yes
K Band Radar Yes
KA Photo Radar Yes
KA Wideband Radar Yes
Laser Yes
Pulse Warning Yes
VG-2 Protection Yes
Display & Alerts
Dimmer Yes
Dark Mode Yes
Visual Alerts OLED
Audible Alerts Tone+Vox
Mute Yes
Earphone Jack No
Visor Clip No
Straight Cord Yes
Coiled Cord No
Case Included No
Battery Powered No
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • Radar detector
  • Windshield mounting bracket with two suction cups
  • 75" Straight power cord with cigarette lighter adapter
  • Self-adhesive hook-and-loop pad
  • Operating Instructions
  • Product registration card

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.


Overview: The Cobra SPX 7700 is a high-performance radar/laser detector in an ultra compact design. Equipped with the latest technology and military-grade components, the SPX 7700's powerful CPU can sweep the entire police radar band spectrum in less than 240 milliseconds, providing extended range and warning time over previous models. The SPX Series gives you the best detection range in its class against all current radar/laser speed enforcement guns used today, including Instant-on and POP mode radar.

15-Band Radar/Laser Detection: The SPX 7700 detects 15 bands of radar and laser, including the Safety Alert System:

  • Radar:
    • X band
    • K band
    • Ka band
    • Ku band
  • Laser (360° detection):
    • LTI 20-20
    • LTI Laser
    • Kustom Signals Laser 340
    • Kustom Signals Laser
    • Stalker LIDAR
    • Laser Atlanta Speedlaser/Kustom Signals-ProLaser II
  • Safety Systems:
    • Safety Alert System
    • Strobe Alert System
  • Radar Detector Detectors:
    • VG-2
    • Spectre I
    • Spectre IV+

Organic LED Display: The SPX 7700 is equipped with a 1.25" full color Organic LED display with bright graphics and clear text. You can adjust the intensity of the display using the top mounted "Dim" button. The detector has a Bright display mode for daytime driving, a Dim mode for dusk driving, and Dark mode where no visual alerts will be displayed. The detector also includes a Color Theme feature that allows you to customize the display screen color scheme to match your vehicle's dash illumination. You can choose from Red, Blue, Orange, White, Green, or Multi-Color.

Instant On/Pop Mode Alert: The Pop Mode Radar Gun is a single-pulse Doppler radar that is a feature of a K and Ka (Bee III radar gun) band Instant-On radar gun. It uses a single, short-time pulse to measure the target vehicle's speed. The SPX 7700 can sense Pop radar signals beyond the effective range of Pop radar guns, and will alert you with two beeps and two flashes of the "P" indicator. During the alert, the unit will continue to detect other signals.

Safety/Strobe Alert: The Cobra SPX 7700 will give you advanced alert of the presence and/or approach of emergency vehicles, trains, and road hazards from systems equipped with Safety Alert Traffic Warning System transmitters. The unit also has a Strobe Alert detector that can pick up the special strobes mounted on the light bars of many emergency vehicles to change traffic signals as the vehicle approaches.

Visual Alerts: The text display includes the type of signals detected and a numeric as well as vertical bar indication of the signal strength from one bar (weakest) to five bars (strongest).

Voice or Tone Alerts: The unit will sound alerts and confirm user settings with an audible alert. You can choose either Voice or Tone alerts. In Voice Alert mode, you will first hear several tones, then a voice announcing the type of signal detected, followed by more tones.  In Tone Alert mode, only the tones will be heard. A distinctly different tone is used for each type of signal detected, and with radar bands, the tones will repeat faster as you approach the signal source.

LaserEye: The SPX 7700's LaserEye provides you with 360° degree detection of laser signals. When mounting the unit, you must make sure the LaserEye has a clear view to the front and rear of the vehicle.

IntelliShield: The unit has Quad-level IntelliShield false signal rejection to reduce uncertainty and frustration from multiple false alerts. When in Highway mode, the unit provides full immediate response to all signals detected. This mode should be used when driving on the interstate and major highways. When driving in more urban environments, you can select one of the City Filtering Modes (City X, City X+K, City Plus X+K+Ka, and City Max) to minimize false alerts from automatic door openers operating in the X and K-band frequencies.

VG-2/Spectre I/IV+ Protection: The SPX 7700 will alert you when VG-2, Spectre I and IV+ radar detector detection (RDD) is in use near your vehicle. The unit is undetectable by VG-2 and Spectre I devices, but can be spotted by Spectre IV+ RDDs. During an alert, the unit continues to detect other signals. You can choose whether or not you want the unit to show VG-2 and Spectre I and IV+ alerts and whether or not to sound audible alerts.

Auto/Manual Muting: When Auto Mute is On, the unit automatically reduces the audio volume of all alerts after they have sounded for four seconds. The signals will remain muted for as long as the signal is detected. When manually muting, you must press the Mute button while a signal is being received. This will reduce the volume of the alert in progress. The volume will return to normal for the next signal.

IntelliMute: IntelliMute allows you to avoid alerts you don't need to hear because you are either stopped or moving slowly. By sensing the RPMs of the engine, IntelliMute knows that you are driving at a low speed and automatically mutes all alerts (except for strobe signals from emergency vehicles). You must first set an activation point for your engine's RPMs, and when the revs go below that point, IntelliMute begins muting. Once set, the activation point is stored in memory.

IntelliMute Pro: IntelliMute Pro prevents detection by radar detector detectors (RDDs), such as VG-2, Spectre I and Spectre IV+, when traveling at slower speeds. When IntelliMute Pro is on, and engine RPMs are below the IntelliMute Pro's activation point, the detector's radar detection circuits are turned off to prevent detection by RDDs. In addition, no alerts will be given at RPMs below the activation point.

Mounting: You will get optimum performance from the detector if you mount it at a point approximately in the center of the vehicle, as low as possible on the front windshield without obstructing the view of the road to the front or rear. The detector can be mounted in two ways:

  • Dashboard Mount: Using the supplied hook-and-loop pad, you can attach the detector to the dashboard.
  • Windshield Mount: The supplied windshield mount adheres the detector to the windshield with two suction cups. The angle can be adjusted for best visibility.
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Cobra SPX 7700 Reviews

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5 out of 5

ease of use

Written By sharky2340, Gulfport,MS on Wednesday, January 15, 2014
Crutchfield Customer Review (What's this?)
this product is the best of radar detectors i have owned.the menu is easy.i love the readout and vocal part of this product
many features
little pricey
5 out of 7 people found this helpful
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MAXSA 12-volt Power Adapter Three-outlet adapter with on/off switch (Model 20093)
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