AudioControl A65CS2 Review: Specifications, Fitment and Comparisons
Quick summary: the buying decision
The A65CS2 is a 6.5-inch 2-way component speaker system, rated at 100 W RMS and 4 ohm. Separate tweeters can be mounted higher, on the dash or A-pillars, than a coaxial allows, which lifts the stereo image towards ear level; the trade-off is a more involved installation with crossovers to mount.
AudioControl A65CS2: what it is
The AudioControl A65CS2 is a 6.5-inch Altitude Series component speaker set with 1-inch silk dome tweeters and passive crossovers, rated at 100 W RMS and 4 ohm. A precision-moulded glass-fibre cone and a lightweight aluminium dust cap deliver warm, accurate sound with extended response.
AudioControl's Altitude speakers share precision-moulded glass-fibre cones, butyl rubber surrounds, silk dome tweeters and steel slimline baskets for easier installation, and they are designed and engineered in the USA. The range covers the A65 coaxials, the A65CS2 component set and standalone A1 tweeters and A275C / A35C midranges for building a 3-way system.
Key features
Separate woofers and tweeters for balanced sound across the full audio spectrum
Lightweight anti-phasing aluminium dust cap enhances sensitivity and extends frequency response
Precision-moulded glass-fibre cone and durable butyl rubber surround
1-inch silk dome tweeters for smooth, detailed highs
Matched drivers and included passive crossovers; steel slimline basket for easy installation
Specifications explained
AudioControl publishes: power handling 100 W RMS; impedance 4 ohm; DC resistance 3.3 ohm; frequency response 65 Hz – 20 kHz; sensitivity 86.5 dB (1 W / 1 m) or 89.5 dB (2.83 V / 1 m).
The two sensitivity figures are the same measurement expressed two ways: for a 4-ohm speaker, 2.83 V equals 2 W, so the 2.83 V figure reads 3 dB higher than the 1 W figure.
Fitment: woofer overall diameter 166 mm (6.53 in), cut-out 139 mm (5.47 in) and mounting depth 2.04 in; tweeter cut-out 35 mm (1.37 in) and mounting depth 10 mm (0.39 in).
Full specifications as published by AudioControl:
Model: A65CS2
Type: 6.5 in 2-way component speaker set
Power handling: 100 W RMS
Impedance: 4 ohm
DC resistance (Re): 3.3 ohm
Voice coil (tweeter / mid): 20 / 30 mm (0.8 / 1.2 in)
Frequency response: 65 Hz – 20 kHz
Sensitivity: 86.5 dB (1 W / 1 m); 89.5 dB (2.83 V / 1 m)
Woofer overall diameter: 166 mm (6.53 in)
Woofer cut-out diameter: 139 mm (5.47 in)
Woofer mounting depth: 2.04 in
Woofer total depth: 2.40 in
Tweeter overall diameter (with housing): 42.5 mm (1.67 in)
Tweeter cut-out diameter: 35 mm (1.37 in)
Tweeter mounting depth: 10 mm (0.39 in)
Crossover dimensions: 92 x 34 x 24 mm (3.6 x 1.3 x 0.94 in)
In the box: 2 x A65CS2 woofers and tweeters, manual
Fitment: will it fit your car?
Measure the factory opening and the depth available behind it, including clearance to the window glass and its channel at full travel. The A65CS2 needs 2.04 in of mounting depth and a 139 mm (5.47 in) cut-out. Spacers or adapter rings are often needed in many cars, and a solid, sealed baffle with door damping makes more difference to midbass than the speaker change alone.
Crossover, filtering and placement
The included passive crossovers (92 x 34 x 24 mm) split the signal between woofer and tweeter; mount them somewhere dry, such as inside the kick panel or behind the dash, rather than inside a wet door.
Mount the tweeters on the dash or A-pillars and aim them across the car towards the opposite seat as a starting point, then adjust by listening. Keep the woofer in a sealed, damped door.
Amplification
An amplifier channel rated close to 100 W at 4 ohm, such as one channel of AudioControl's A600.4 (4 x 100 W at 4 ohm), suits the set.
How it compares
Related speakers at VA3 Car Studio:
AudioControl A65: 6.5 in 2-way coaxial speakers (pair), 100 W RMS, 4 ohm, 86.2 dB (1 W / 1 m), mounting depth 68 mm, ₹19,540
AudioControl A1: 1 in component tweeters (pair), 50 W RMS, 4 ohm, 86.5 dB (1 W / 1 m), mounting depth 10 mm, ₹11,890
AudioControl A275C: 2.75 in component midrange speakers (pair), 50 W RMS, 4 ohm, 82.6 dB (1 W / 1 m), mounting depth 32.5 mm, ₹9,340
AudioControl A35C: 3.5 in component midrange speakers (pair), 50 W RMS, 4 ohm, 84.6 dB (1 W / 1 m), mounting depth 34.5 mm, ₹11,040
AudioControl PNW-65CS2: 6.5 in 2-way component speaker set, 100 W RMS / 125 W max, 3 ohm, mounting depth 60 mm, ₹42,490
Price and value in India
At the time of writing (October 2026), VA3 Car Studio lists the A65CS2 at ₹25,490, 15% below the MRP of ₹29,990. Budget for installation as well as the set: tweeter mounting, crossover placement and door damping decide how good it sounds. Prices can change, so the product page always shows the current price.
Verdict: who should shortlist the A65CS2
The A65CS2 is a sensible first component set: easy to install with slimline baskets and small tweeters, and it rewards a modest amplifier and door damping.
Real-world reviews and limitations
We have not yet published a VA3 installation report for the A65CS2. The figures in this review are AudioControl's published specifications, not our own measurements, and real-world results depend on the baffle, door treatment, tweeter position and the tune. If you have used one, we would welcome your feedback.
Frequently asked questions
What mounting depth does the A65CS2 need?
2.04 in, with a 139 mm (5.47 in) cut-out.
How much power can the A65CS2 handle?
100 W RMS at 4 ohm.
Are crossovers included with the A65CS2?
Yes. Matched passive crossovers are included.
What is the difference between the A65CS2 and A65?
The A65CS2 has separate tweeters and crossovers; the A65 is a coaxial with the tweeter on the woofer.
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