Focal ICU 690 Speakers
140,00 €
Focal ICU 690 is a two-speaker set for a car audio system. The 80 W RMS rated power helps with matching a suitable amplifier load, while the 160 W figure describes maximum power. Sensitivity is 93.6 dB when measured at 2.83 V/1 m. The speakers use Polyglass cones, butyl surrounds and 25 mm voice coils.
Focal ICU 690 speakers are supplied as a two-speaker set for a car audio system. This model is intended for buyers looking for a 4-ohm pair with Polyglass cones and butyl surrounds. Before installation, it is important to check the amplifier load and the available mounting location in the vehicle.
Who this speaker pair is for
The set includes two speakers, allowing them to be used with two separate audio-system channels. Assign a suitable amplifier channel to each speaker and maintain the same polarity on both channels.
The model name alone does not confirm compatibility with a particular vehicle. Before purchasing, measure the mounting opening and installation depth, and check the positions of the mounting points. These measurements must be suitable without modifying the speaker structure.
Understanding the power ratings
The 80 W RMS rated power is the main reference for continuous operation. Use this figure when matching the speakers with an amplifier and setting its gain. A clean signal is more important than continually trying to reach maximum volume.
The 160 W maximum power is not the same as the rated power and should not be treated as a continuous power figure. Excessive gain or a distorted signal can place the speakers under stress even before the desired volume is reached.
Sensitivity and frequency response
The 93.6 dB sensitivity was measured at 2.83 V/1 m. When comparing this model with other speakers, use figures measured under the same conditions. A measurement stated at 1 W/1 m is not directly equivalent.
The frequency response extends from 55 Hz to 21 kHz. The lower limit helps indicate the speaker’s bass extension. If deeper bass is important, a separate subwoofer may be used as part of the system.
Cone, surround and voice coil
The Polyglass cone is the moving part of the speaker that produces sound. It is surrounded by a butyl surround, which allows the cone to move and return to its resting position. Interior trim or protective grilles must not touch either component.
The 25 mm voice-coil diameter describes part of the speaker’s internal construction. It must not be confused with the mounting opening or the speaker’s overall external dimensions. The complete speaker geometry must be considered when choosing an installation location.
Connection and initial setup
The amplifier channel must support a 4-ohm nominal load. Normally, each speaker should be connected to its own suitable channel. Do not connect both speakers in parallel to one channel unless the amplifier supports the resulting load.
When switching on the system for the first time, begin with the amplifier gain turned down. Set the source unit’s tone controls to neutral and disable any bass boost. Increase the volume gradually, stopping if you hear harshness or distortion.
Mounting location
The speaker should be mounted evenly and without mechanical stress. A rigid mounting surface helps reduce the likelihood of trim vibration and rattling. Leave sufficient clearance behind the cone so that the speaker structure cannot come into contact with parts of the vehicle.
Technical specifications
| Model | Focal ICU 690 |
| Product type | Pair of speakers |
| Rated power | 80 W RMS |
| Maximum power | 160 W |
| Sensitivity | 93.6 dB (2.83 V/1 m) |
| Frequency response | 55 Hz-21 kHz |
| Cone | Polyglass |
| Surround | Butyl |
| Nominal impedance | 4 Ω |
| Voice-coil diameter | 1 inch (25 mm) |
| Quantity | 2 |
| Net weight | 1.25 kg (not specified whether this applies to one speaker or the pair) |
FAQ
How should I choose an amplifier for these speakers?
Choose amplifier channels that support the stated nominal impedance. Match the power using the RMS rating rather than the maximum-power figure.
How should I connect both speakers?
Normally, connect each speaker in the pair to a separate amplifier channel. Maintain matching positive and negative wire polarity on both channels.
How should I set the gain after installation?
Start with a low gain setting and neutral tone controls. Increase the level gradually while listening for any clear distortion.
Where can this speaker pair be installed?
The installation location must provide a suitable opening, sufficient depth and appropriate mounting points. The cone and surround need unobstructed movement without touching the trim.
Do these speakers replace a subwoofer?
The stated frequency response begins at 55 Hz, so a separate subwoofer may be needed to reproduce lower frequencies.
