Cabinet type and stated extension, not the number on the amplifier
A subwoofer specification contains one honest number and one that is usually theater. The honest one is the stated frequency extension, ideally with a tolerance — "28 Hz (−6 dB)" says something, "18 Hz" alone says nothing. The theatrical one is power: an RMS figure is a measurement, a "peak" or "PMPO" figure is a multiplication. Between them sits the choice that shapes the sound most: a sealed cabinet rolls off gently and starts and stops cleanly, while a ported one is louder and deeper for the same money and can sound slower on music. Then the practical part — line inputs, an LFE input, a phase switch and a crossover dial, which is what lets a subwoofer disappear into a room rather than announce itself. We compare driver size, cabinet type, stated extension with its tolerance, RMS power, inputs and crossover controls.
In brief
We compare five active subwoofers on what each listing publishes. One had an Amazon.com offer on October 25, 2026, at $259. On this shelf the driver size and the published response say the most, and the watts do not compare. In the United States, the Klipsch R-12SW — 12 in, front-firing, 29–120 Hz stated — was the one subwoofer on offer when we checked.
12 in (30.5 cm) front-firing driver · all-digital amplifier · 400 W dynamic power · 29–120 Hz stated
A 12 in front-firing subwoofer with an all-digital amplifier rated at 400 W of dynamic power and a stated 29–120 Hz response — the largest driver on this shelf.
Best for: A living room where the subwoofer has to keep up with films — and a receiver with an LFE output to feed it.
≈ $259
8-inch driver · 70 W · low-pass filter · down to 35 Hz stated · MDF cabinet · RCA · standby
The best-specified subwoofer in this catalog: it publishes a frequency extension figure — 35 Hz — which nothing else here does.
Best for: A small to medium room, and anyone who wants to compare a published number rather than infer from a driver size.
No Amazon.com offer on Oct 25, 2026
8-inch driver · 80 W RMS · 40–250 Hz stated · adjustable crossover
The only subwoofer here that states power as RMS and gives a frequency range with both ends — 40 to 250 Hz — which makes it comparable in two ways at once.
Best for: A stereo system where the subwoofer has to blend with existing speakers, and where a published crossover range makes that possible.
No Amazon.com offer on Oct 25, 2026
Active · 60/120 W stated as a pair · sold singly
A German-made active subwoofer quoted conservatively — 60/120 W — in the two-figure form that makes a rating comparable rather than impressive.
Best for: A small or medium room, and a system built from components rather than bought as a package.
No Amazon.com offer on Oct 25, 2026
Active · 150 W · front-firing or downfiring · sealed or ported not stated
A subwoofer that can be oriented front-firing or downfiring — a placement flexibility that matters more in a real room than a specification does.
Best for: A room where the subwoofer has to go under or beside furniture, and orientation decides whether it works there.
No Amazon.com offer on Oct 25, 2026
For a living room, a 10 or 12 in driver is the usual answer; an 8 in sub suits a small room or a desk. On this shelf the Klipsch R-12SW is 12 in, and the Edifier T5s and the VULKKANO SUB8 are 8 in.
Try it at the listening seat first: play bass-heavy music, crawl around the room, and put the sub where the bass sounds even. A corner gives the most output and the most boom; a spot along a wall usually gives the smoothest result.
None of the five here states a wireless link: a cabled sub connects to the receiver's subwoofer (LFE) output — the Klipsch states line and LFE inputs, the Edifier RCA. A cable is reliable and delay-free; wireless is about placement, not sound.
The lowest frequency a maker states its subwoofer reaches: 29 Hz for the Klipsch R-12SW, 35 Hz for the Edifier T5s, 40 Hz for the VULKKANO. The deepest bass in a film's effects channel sits between about 20 and 40 Hz. Without a tolerance, none of the three says how much output is left at that frequency.
The setting that decides which frequencies the subwoofer plays, so it hands over smoothly to the main speakers. The Edifier states a low-pass filter and the VULKKANO an adjustable crossover; with a receiver, its own bass management usually does this job.
On this shelf the driver size and the published response say the most, and the watts do not compare. In the United States, the Klipsch R-12SW — 12 in, front-firing, 29–120 Hz stated — was the one subwoofer on offer when we checked.
Only figures stated by four devices in five open a column. A half-filled column sets nothing against anything.
| Model | Price | Power |
|---|---|---|
| Klipsch R-12SW | $259 | 400 W dynamic power — stated as dynamic, not as a sustained or RMS figure |
| Canton 4010243027005 | — | 60 W sustained / 120 W — stated as a pair |
| Edifier T5S-BK | — | 70 W — stated |
| Teufel 105421001 | — | 150 W — stated |
| VULKKANO 8437023900345 | — | 80 W RMS — stated as RMS, which is a measurement |
Specifications: manufacturer sheets for home theater gear and the matching Amazon product pages. Prices and availability: Keepa. Every figure in this table names its source.
Most recent revision in this category: October 25, 2026.
Prices quoted in these summaries are dated readings. The live price is shown next to each product.
