Hertz CS 250 Review: A 10-Inch Cento Sub for a 16-Litre Box, S2 or S4
Updated: Oct 7
The Hertz CS 250 is a 10-inch (250 mm) Cento subwoofer driver rated at 300 W continuous and 600 W peak, with 84 dB sensitivity and a recommended sealed box of just 16 litres. One listing covers both the 2-ohm CS 250 S2 and the 4-ohm CS 250 S4, with an Indian MRP of ₹19,990, and it sits in Hertz's mid-range Cento line. It suits buyers who want real bass from a modest box and are happy to add a mono amplifier. Today's price is on our Hertz CS 250 product page.
At a glance
A 16-litre sealed box (Fb 50 Hz, Qtc 0.87) and a 115 mm mounting depth keep the enclosure compact.
Both versions are rated at 300 W continuous; the 2 Ω S2 and 4 Ω S4 simply suit different amplifiers.
Hertz suggests a 70 to 80 Hz low-pass and a 15 Hz subsonic filter, both at 24 dB/octave.
We found no readable owner reviews when we checked, only a promotional spotlight.
Hertz CS 250 specifications
Specification | Hertz CS 250 S2 / S4 |
|---|---|
Type | 10-inch (250 mm) subwoofer driver, single voice coil |
Impedance | 2 Ω (S2) or 4 Ω (S4) |
Power handling | 300 W continuous, 600 W peak |
Sensitivity | 84 dB |
Fs / Qts | 30 Hz / 0.49 (S2), 30 Hz / 0.52 (S4) |
Vas | 32 l (S2), 34.5 l (S4) |
Xmax / Xmech | 12.5 mm / 16.5 mm |
Voice coil | 35 mm, six layers of pure copper |
Cone and surround | Polypropylene, nitrile rubber (NBR) |
Magnet | Ferrite, 120 x 45 x 34 mm |
Recommended box | 16 l sealed, Fb 50 Hz, Qtc 0.87 |
Mounting depth | 115 mm |
Outer diameter / cutout | 270 mm / 231 mm |
Weight | 3.8 kg |
India MRP | ₹19,990 |
Figures come from Hertz's official CS 250 S2 page and CS 250 S4 page, with the MRP from our listing. Both pages give the mounting hole as 231 mm; measure the driver before cutting a baffle.
What the 16-litre box means
Sixteen litres is a small enclosure for a 10-inch sub. Hertz's alignment, an Fb of 50 Hz with a Qtc of 0.87, sits a little above the flattest sealed alignment; on paper that means controlled bass with a touch of punch rather than maximum depth. With the 115 mm mounting depth, the box can also be shallow enough to stand against the rear seat back.
Hertz's pages list only the sealed recommendation for this driver, so treat a ported box as a custom design rather than a published one. The suggested 70 to 80 Hz low-pass at 24 dB/octave keeps the sub out of the vocal range, and the 15 Hz subsonic filter spares the cone needless excursion.
Built for heat and excursion
The cone and dust cap are polypropylene, shaped with FEM simulation to cut low-frequency distortion, on a nitrile rubber surround. Behind them sits a 35 mm voice coil wound in six layers of pure copper on a glass-fibre former chosen for its thermal resistance, which counts in a hot boot.
Hertz also routes air on purpose. The spider support channels it to vents in the basket, which Hertz says reduces distortion from air compression when the cone is moving hard, and the driver has 12.5 mm of one-way Xmax to work with. With no rear decompression hole, the box can be shaped tightly around the magnet. Push terminals take cable up to 8 AWG, a rubber cover protects the magnet, and an ABS gasket accepts the optional CG 250 grille.
Matching an amplifier: S2 or S4
A subwoofer needs its own amplifier; no head unit can drive one properly. If you are keeping a factory touchscreen, choose a mono amplifier with speaker-level inputs (see our guide on when a car needs an amplifier).
The CS 250 pairs neatly with two mono amplifiers we cover, as long as you pick the right version. The Hertz DP 1.500 is rated at 280 W into 4 Ω, a close match for the S4's 300 W continuous rating, and it accepts speaker-level inputs. On the S2 the same amplifier can deliver 500 W, far more than the rating, so it is the wrong pairing unless the gain is set very conservatively. The Zapco ST-500XM III works the other way: 300 W into 2 Ω suits the S2 exactly, while the S4 would get only 200 W.
What owners and reviewers say about the Hertz CS 250
When we checked in October 2026, we found no owner reviews of the CS 250 that we could read. OnlineCarStereo's CS 250 S2 listing shows zero reviews, we could not access Amazon's listings, and Team-BHP, Reddit and forum searches found nothing specific.
The one piece of commentary we found is promotional: a 2019 BestCarAudio product spotlight, written for retailers and republished by a US installer. It says the 10-inch models work in a 0.57 cubic foot enclosure, which matches Hertz's 16 litres, with an F3 of 55 Hz, and it calls the Cento subs trickle-down technology while highlighting the four-spoke basket and vented voice-coil cooling. It does not claim to have listened to the sub. If you own a CS 250, we would like to hear how it performs in your car.
CS 250 vs CS 300, CS 200 S4 and CBA 250
The 12-inch Hertz CS 300 has the same ₹19,990 MRP and the same S2 and S4 options, but it needs a 32-litre box in return for 350 W continuous and 86.5 dB sensitivity. Choose it only if your boot can give up twice the volume. The 8-inch CS 200 S4 (₹14,990 MRP) is a 4 Ω driver that handles 150 W continuous and works in a 9.6-litre sealed box.
Don't assume the active Hertz CBA 250 is a CS 250 in a box. Hertz lists its 10-inch driver with a pressed paper cone, a 60 mm voice coil and a 0.4 Ω resistance, driven by a built-in 250 W amplifier, at ₹49,990 MRP. It is the simpler install; the CS 250 costs less up front but needs a box and amplifier.
Who should buy it, and who shouldn't
Buy the CS 250 if you want a compact sealed sub that adds real low end without taking over the boot, you are adding or already own a mono amplifier, and you like tight, controlled bass more than maximum volume.
Look elsewhere if you want a plug-in unit with no box to build (the CBA 250), or you have the space and want more output (the CS 300).
Installation notes for Indian cars
Use rigid MDF for the 16-litre box, and seal every joint and the driver's mounting so the enclosure is airtight. Strap or bolt the finished box down, because speed breakers and broken roads will shift a loose enclosure, and check that it clears a spare wheel or CNG cylinder.
Run the amplifier's power cable from the battery with the fuse close to the terminal, and look at battery health first: long idling with the AC on is a hard test for a charging system in NCR traffic. Boot lids and number-plate surrounds rattle as soon as real bass arrives, so treat them while the trim is off; our guide to applying sound damping explains how. VA3 Car Studio offers professional installation in Ghaziabad.
Price and where to buy
The Hertz CS 250 carries an MRP of ₹19,990 in our listing, which covers both the S2 and the S4, so tell us which impedance you need. Check today's price on the CS 250 S2/S4 product page. The CG 250 grille is sold separately, and every driver we sell is a genuine Hertz product.
The bottom line
This is the practical choice among our Cento subs: a 10-inch driver that asks for only 16 litres, with sensible power handling and a clear way to match it to an amplifier. Owner feedback is missing for now, so you are buying on Hertz's published figures. Match the version to your amplifier and build the box properly.
Hertz CS 250 FAQ
Is the Hertz CS 250 S2 or S4 better?
Neither is better; they suit different amplifiers. Both handle 300 W continuous. Hertz's DP 1.500 gives 280 W into the 4-ohm S4, while Zapco's ST-500XM III gives 300 W into the 2-ohm S2. Choose the version that brings your amplifier close to 300 W.
What size box does the CS 250 need?
Hertz recommends a 16-litre sealed box with an Fb of 50 Hz and a Qtc of 0.87, plus a 70 to 80 Hz low-pass and a 15 Hz subsonic filter. Its pages list no ported design for this driver.
Is the CBA 250 just a CS 250 in a box?
No. Hertz lists the CBA 250's driver with a pressed paper cone, a 60 mm voice coil and a 0.4-ohm resistance, matched to a built-in 250 W amplifier. The CS 250 has a polypropylene cone and a 35 mm coil in 2-ohm or 4-ohm form.
Buy the Hertz CS 250 S2/S4 Cento in India
Check the Hertz CS 250 S2/S4 Cento price in India, browse more Hertz subwoofers or compare all car subwoofers in India. Want it fitted properly? Book subwoofer installation at our Ghaziabad studio.
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