Audio Dynamics
Audio Dynamics ADCX6914 6x9" Coaxial Speaker Set
SKU: ADCX6914
Audio Dynamics ADCX6914 6x9" Coaxial Speaker Set
Closeout, remaining stock
Audio Dynamics 1000 Series ADCX6914 6x9 Inch Coaxial Set
Coated paper cone, 12mm polymer film dome, thick steel frame with a treated foam surround. 80W RMS, 87.5dB, 4 Ohm, Fs 74.66Hz, 78.5mm mounting depth.
- Closeout
- Coaxial
- Final sale
What You Are Buying
A two-way 6x9 inch coaxial pair for rear decks and the factory 6x9 locations in trucks and older sedans.
A 6x9 is not a better 6.5. It is an oval, and the oval exists because it fits a rear deck cutout, not because the shape does anything acoustically useful. What it does give you is roughly 40 percent more cone area than a 6.5, and that shows up as more output for the same power and a lower resonance.
Read the power rating before you set your gains
The 80W RMS figure is measured with an electronic high-pass filter in circuit at 60Hz at 24dB/octave, 80Hz at 18dB/octave, or 100Hz at 12dB/octave. Note that these corner frequencies are lower than Audio Dynamics specifies for their 5.25 and 4 inch drivers. That is the extra cone area earning its keep.
Reading the Specification
Fs 74.66Hz
Free-air resonance, and the lowest of the 1000 Series coaxials by a wide margin. It is why this driver can be crossed at 60Hz where the 4 inch model needs 120Hz. If you are running these without a subwoofer, this number is the reason it works at all.
87.5dB sensitivity
Meaningfully higher than the 5.25 or 4 inch models in the same series, again from cone area. High enough to be genuinely usable on head unit power, which is how most 6x9s in rear decks actually get driven.
12mm polymer film dome
A half-inch dome. Small, and it disperses widely, which is the right characteristic for a rear deck speaker firing at the back window rather than at anyone. Do not expect it to have the reach of a larger tweeter.
Treated foam surround
Worth knowing rather than worrying about. Foam surrounds have a finite life in a car, particularly on a rear deck baking under a rear window. Rubber lasts longer. On a closeout speaker at closeout pricing this is a fair trade, but it is a real difference from the rubber surround on the ADCX513.
Fitment
- Standard 6x9 inch cutout. Check your existing holes; 6x9 mounting patterns vary more between manufacturers than round sizes do.
- 78.5mm / 3 1/16 inch mounting depth. Deeper than the round drivers in this series. Rear decks usually have the room, doors often do not.
- 4 Ohm nominal.
Rear deck, not rear fill
A 6x9 on a rear deck fires into the parcel shelf cavity and the trunk, which is a large and uncontrolled volume. That loading is why rear 6x9s sound bigger than their size and also why they smear the stage if you run them level with the front. Turn them down until you notice them only when they stop.
Who This Suits
Buy these if
- You have factory 6x9 rear deck locations and want a straight replacement.
- You are running head unit power. 87.5dB works there.
- You want more midbass than a 6.5 will give from the same amplifier.
- You accept a final sale on closeout stock.
Look elsewhere if
- You want these to replace a subwoofer. 74.66Hz Fs says otherwise.
- Your location is a door with less than 78.5mm of depth.
- You want a long-life rubber surround.
- This is your front stage and imaging matters.
Installation
- Set the high-pass at 60Hz or above before you set the gain.
- Verify the mounting pattern against the factory holes. 6x9 patterns are not standardised the way round cutouts are.
- Wire straight from the head unit or amplifier. The crossover is built in.
- Brace the rear deck if it flexes. A thin parcel shelf resonating with the speaker undoes most of what the extra cone area bought you.
Condition and sale terms
Closeout stock, sold as a final sale with no returns and no exchanges. Packaging may show shelf wear from storage. Specifications are as published by Audio Dynamics, including the power rating's dependence on external high-pass filtering. Once remaining stock is gone this listing will be removed.
Questions on fitment before you buy: contact us.
| Type | 2-way coaxial |
|---|---|
| Size | 6x9 inch |
| Woofer cone | Coated paper |
| Surround | Treated foam |
| Tweeter | 12mm / 0.5 inch polymer film dome |
| Frame | Steel |
| Impedance | 4 Ohm nominal |
| Series | 1000 Series |
| Condition | Closeout |
| RMS power | 80W with high-pass filtering, see note |
|---|
| Sensitivity | 87.500 dB |
|---|---|
| Fs, free-air resonance | 74.660 Hz |
| Mounting depth | 78.5mm / 3 1/16 inch |
|---|---|
| External crossover | None required, integrated |
The 80W RMS rating is measured with an electronic high-pass filter in circuit at 60Hz / 24dB per octave, 80Hz / 18dB per octave, or 100Hz / 12dB per octave.
