Deaf Bonce AP-M67AC Review: 300 W in a 6.5-Inch Midrange, and How to Use It
Updated: Oct 6
The Deaf Bonce AP-M67AC is a 6.5-inch Apocalypse midrange, sold as a pair, that carries a 300 W RMS (600 W max) rating into 4 Ω, alongside a listed sensitivity of 101.7 dB and a 1.75-inch voice coil on a cast aluminium frame. At ₹29,990 MRP, it has the highest power rating of the 6.5-inch Deaf Bonce ferrite midranges we stock, priced above the 180 W AP-M61AC and well below the neodymium AP-M67AN. It suits loud, amplified builds where midranges are driven hard for long periods, sometimes two to a side. Prices and stock are on our AP-M67AC product page.
At a glance
300 W RMS in a 6.5-inch frame, with a 1.75-inch voice coil, paper cone, cloth surround and ferrite motor.
At 101.7 dB it is very loud on modest power; the rating is thermal headroom for hard use, not a power target.
Our listing quotes Deaf Bonce's filters: high-pass at 150–250 Hz (24 dB per octave) or 250–350 Hz (12 dB per octave), low-pass at 8–12 kHz.
77 mm deep with no listed cut-out; it needs a tweeter above it and a subwoofer below.
Deaf Bonce AP-M67AC specifications
Specification | Deaf Bonce AP-M67AC |
|---|---|
Type | 6.5-inch (165 mm) midrange speaker, sold as a pair |
Series | Apocalypse |
Power handling | 300 W RMS, 600 W max |
Impedance | 4 Ω |
Frequency response | 100 Hz – 15 kHz |
Sensitivity | 101.7 dB |
Voice coil | 1.75 in |
Cone and surround | Paper cone, cloth surround |
Magnet | Ferrite |
Frame | Cast aluminium |
Mounting depth | 77 mm (3 in) |
Cut-out diameter | Not listed |
Recommended filters | High-pass 150–250 Hz (24 dB/oct) or 250–350 Hz (12 dB/oct); low-pass 8–12 kHz (12 dB/oct) |
India MRP | ₹29,990 (pair) |
These figures come from our store listing. Deaf Bonce's official AP-M67AC page confirmed the 6.5-inch size, pair packaging and series when we checked in October 2026, but showed placeholder values in its power, impedance and response fields.
Why a 6.5-inch midrange carries 300 W
A rating this high in a 6.5-inch driver is about heat, not loudness. Each doubling of amplifier power adds only 3 dB, so going from 150 W to 300 W buys the same 3 dB as going from a few watts to double that. With 101.7 dB sensitivity, the AP-M67AC is already loud on a fraction of its rating; what the bigger 1.75-inch coil and the 300 W figure give you is the ability to stay at high levels for a long session without the coil overheating. That matters in competition-style or street builds that are played hard, and much less in a daily driver.
Its other traits match the AP-M61AC's. The cloth surround keeps cone travel short and controlled, so the driver is happiest above 150 Hz with a subwoofer below it, and the cast aluminium frame stays rigid when the cone is working hard. The response is listed to 15 kHz, but a 6.5-inch cone narrows its dispersion well before that, so a tweeter should take the top end.
Amplifier options, including two per side
The simplest match is one driver per channel. Deaf Bonce's MFA-4.320 is listed at 320 W x 4 into 4 Ω at 14.4 V, essentially the speaker's rating, and it can run a high-pass and a low-pass at the same time between 50 Hz and 12 kHz at 12 dB per octave. That covers Deaf Bonce's 250–350 Hz high-pass option and the 8–12 kHz low-pass from the amplifier alone. The 150–250 Hz option calls for a 24 dB slope, which means adding a DSP; our guide to setting up a DSP covers the basics.
The high rating also makes two midranges per side practical. Two 4 Ω speakers wired in parallel present 2 Ω, which the MFA-4.320 supports: it is listed at 480 W x 4 into 2 Ω, or about 240 W per speaker, still inside the 300 W rating. Check that any amplifier you use is rated for the final load, set the gains with a test tone, and remember that amplifier ratings assume 14.4 V, which a car idling with the AC on full may not hold.
What owners and reviewers say about the Deaf Bonce AP-M67AC
We found no owner or reviewer opinions on the AP-M67AC when we checked in October 2026. The retailers, catalogues and forums we tried were either blocked to us or had no listing for this model, and Deaf Bonce's own page was incomplete, as noted above.
So this review is built from the listed specifications and the way the AP-M67AC fits a system, not from anyone's listening impressions. If you have run a pair, especially at high power or two per side, we would like to hear how they have held up.
AP-M67AC vs AP-M61AC, AP-M67AN and AP-M81AC
The AP-M61AC costs ₹5,000 less and is listed at a near-identical 101.6 dB, with a 180 W rating and a 1.5-inch coil; our listings give it an 81.0 mm depth against 77 mm here. If you will never push past moderate power, the AP-M61AC delivers about the same output per watt for less. The AP-M67AC earns its premium when you need sustained power or plan to run two per side.
The neodymium AP-M67AN (₹79,990) shares the 300 W rating and 1.75-inch coil, lists a 102.0 dB SPL figure, a 200 Hz – 14 kHz response and a 67.5 mm depth, and publishes a 152 mm cut-out plus key Thiele-Small figures. The 8-inch AP-M81AC (₹34,990) has the same rating and recommended filters but a lower 97.5 dB and a 10 kHz upper limit, and needs room for an 8-inch driver.
Who should buy it, and who shouldn't
Buy the AP-M67AC if you are building a loud front stage that will be played hard, you want the option of two midranges per side on a 2 Ω-stable amplifier, or you want the most thermal headroom among the 6.5-inch Deaf Bonce ferrite midranges we sell.
Choose something else if your listening is mostly moderate, where the AP-M61AC does the same job for less, or if you want a simple upgrade on head-unit power. In that case, a component set with tweeters and crossovers, such as the Machete MFC-60, is the more sensible buy.
Installation notes for Indian cars
Check the 77 mm depth against the window glass before cutting, and measure the speaker for the cut-out, since our listing doesn't give one; a spacer ring in MDF or plastic is usually needed. At these power levels, don't reuse thin factory speaker wiring. Run fresh cable from the amplifier through the door grommet: our reviews of Tchernov Standard 2.0 and Tchernov Special 2.5 speaker cable cover suitable sizes.
A driver absorbing hundreds of watts turns most of it into heat, so give the magnet some air rather than burying it in foam, and seal and damp the door so the panel doesn't buzz at volume; our damping guide explains how. For two-per-side builds, a custom podium or kick panel usually works better than squeezing two drivers into a door. VA3 Car Studio in Ghaziabad can design and build either.
Price and where to buy
The Deaf Bonce AP-M67AC has an MRP of ₹29,990 for the pair. VA3 Car Studio often sells below MRP; check the current offer on the AP-M67AC listing. For a two-per-side build you will need two pairs, and we can quote the amplifier, cabling and fabrication together.
The bottom line
The AP-M67AC is a 6.5-inch midrange rated for sustained power: 300 W of thermal headroom, a 1.75-inch coil and almost the same listed sensitivity as the cheaper AP-M61AC. Use the recommended filters, give it a tweeter and a subwoofer, and it suits hard-driven and two-per-side builds. If you will rarely use that headroom, the AP-M61AC is the better-value pick.
Deaf Bonce AP-M67AC FAQ
How much amplifier power does the Deaf Bonce AP-M67AC need?
Far less than its 300 W rating to play loud, thanks to its 101.7 dB sensitivity. An amplifier close to the rating, such as one giving 320 W per channel into 4 Ω, provides full headroom, while a smaller amplifier is enough for moderate listening.
Can I wire two AP-M67AC midranges to one amplifier channel?
Yes, if the amplifier is rated for 2 Ω. Two 4 Ω speakers in parallel present 2 Ω, and an amplifier listed at 480 W per channel into 2 Ω would give each speaker about 240 W, inside its 300 W rating.
What filters does Deaf Bonce recommend for the AP-M67AC?
Our listing quotes a high-pass of 150 to 250 Hz at 24 dB per octave, or 250 to 350 Hz at 12 dB per octave, and a low-pass of 8 to 12 kHz at 12 dB per octave, with a tweeter covering the top end.
Buy Deaf Bonce Speakers in India
You can buy the Deaf Bonce Apocalypse AP-M67AC 6.5-Inch Midrange Speakers 300W RMS online from VA3 Car Studio with pan-India shipping. See more Deaf Bonce speakers, compare other midrange and midbass speakers, or book a speaker upgrade in Ghaziabad.
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