KRK S8G4

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Active Studio Subwoofer

Drivers: 8" glass-aramid composite woofer
Power: 109 Watt - Class D amplifier
Frequency range: 34.5 - 133 Hz
Maximum level: 112.8 dB
SNR: 92 dB
Adjustable crossover frequency
Bypass function via an optional foot switch
Switches for standby function, ground/lift, polarity and input sensitivity
2 Line inputs and outputs: XLR, 6.3 mm jack and cinch
Foot switch input: 6.3 mm jack
Integrated power supply 100 V AC - 240 V AC
MDF housing
Dimensions (W x H x D): 410 x 279 x 292 mm
Weight: 12 kg
Matching speaker protection grille available under article no. 533326

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since May 2021

Item number 519066

Sales Unit 1 piece(s)

Components 1x 8"

Power 109 W

Frequency range 133 Hz

Conectors XLR, TRS, RCA

Measurements 410 x 279 x 292

Weight 12,0 kg

3.499 kr

Free shipping incl. VAT

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Powerful subwoofer for low-end precision

The KRK S8G4 is a subwoofer with a high-quality low-end transient response that makes it perfect for generating the lowest frequencies in professional settings. Its rear panel's flexible connection options make it easy to integrate into any existing setup, and the S8G4 is equipped with an adjustable crossover frequency for near-field monitors, which can also be connected via XLR or cinch sockets, and there are a number of further settings that can be used to optimise the sound output: Volume, input sensitivity, polarity, and even a ground/lift switch. The KRK S8G4 combines cutting-edge technology with a wealth of functions for perfect sound, resulting in a powerful subwoofer that can deliver a precise low end.

Modern, flexible, high-tech

The KRK S8G4 is equipped with an 8" glass-aramid composite woofer that reproduces frequencies as low as 29Hz. The woofer itself is driven by a Class D amplifier with an output of 109W capable of achieving a maximum sound pressure level (SPL) of 112.8dB. The specially designed, low-profile MDF cabinet ensures that the unit is robust, and the unique shape of the front-facing bass reflex port expands low frequencies while reducing boundary effects. The rear panel has both RCA inputs for integration into a hi-fi setup, and XLR and cinch inputs for use as part of a professional setup. The crossover can be set to 70, 80, 90 or 100Hz, and the phase can also be rotated by 180°, in addition to which the ground/lift switch allows hum from ground loops to be cut.

Rear view of the KRK S8G4 subwoofer with control panel

For a solid bass foundation

The KRK S8G4 generates a powerful bass response that makes it especially suited to producing EDM and hip-hop tracks; it's also ideal for the post-production of advertising audio, where bass has become an absolutely indispensable part of the user experience. For this reason alone, a decent subwoofer is an essential component of every modern studio's equipment: The KRK S8G4 not only offers a number of features that will enable effortless integration into an existing setup, it can also be flexibly adapted to the acoustic characteristics of a specific space and the workflow of individual listeners. For example, a footswitch – available as a separate accessory - can be used to immediately mute the subwoofer itself so that only the near-field monitors attached to it can be heard. On top of all this, the KRK S8G4 is simply a very well-made device, offering a solid foundation for every studio setup, even one that is frequently installed, broken down, and reinstalled elsewhere. And if the subwoofer ever does blow a fuse, it's easy for users to replace it themselves.

About KRK

The KRK Systems brand, today a subsidiary of US guitar manufacturer Gibson, has existed since 1986, and has acquired as many years of experience in the construction and design of studio monitors. Today, KRK's product range has extended to include subwoofers and headphones, in addition to their near- and midfield monitors. KRK adepts include such illustrious names as Mark "Spike" Stent (Ed Sheeran’s sound engineer), Grammy winner Ed Cherney, rock producer Jacquire King, rock and metal producer Ulrich Wild as well as trance DJ Armin van Buuren.

Proper placement for perfect pitch

The KRK S8G4 has an omnidirectional signal pattern, meaning sound is produced uniformly in all directions. In practice, this means an ideal setup would involve it being placed – firstly – near the near-field monitors in order to avoid phase problems, and – secondly – at a sufficient distance from walls and corners. The process for finding the best position for a subwoofer in any space begins with it placed centrally relative to the listening position, with the unit then being moved further away until the bass sound is either at its most gentle or its loudest. If the bass is too quiet, it may be necessary to invert the phase (without moving the speaker itself). Finally, pink noise can be played over the subwoofer and near-field monitors to enable the precise adjustment of their volume settings.

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30 Reviews

Good subwoofer

Alex9423 23.07.2021

I use my KRK S8G4 with my BX8 D3s. The key difference when using the subwoofer for me is how much cleaner the BX8s sounds. Its a huge improvement and was mainly why i wanted a subwoofer for them. The bass quality has also improved. The BX8 and KRKS compliment each other very nicely. I choose to use the 70hz setting. No port noise no resonances at all. Only reason that I " only " give it 4 stars in the sound quality department is because the bass is not quite as clean as my 2070 si. Bass notes are more distinct with my 2070 si. On the other hand my 2070 si has a lot of port noise at lower frequencies. The KRK doesn't.

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Compact and comprehensive

Jaap59 18.06.2021

The purpose of the KRK subwoofer is to extend the bass of my pair of Adam T5Vs. This combination is mainly used to listen to blues, pop and rock music. It is connected to a Volumio media player with a high end DAC. The T5V has a nice bass of its own, but I wanted a subwoofer for that extra bit of bass, mainly reproduction of bass drums and the lowest 4 string bass tones going as low as 40 Hertz. I choose the KRK S8G4 for its compact size, multiple inputs including RCA and the selectable crossover frequencies. It works fine for me, but have a look at the bigger sized KRKs if you want to hear synthesized bass and movie sound effects. In addition, the optional foot switch to bypass cross over really helped me to adjust the subwoofer. Finally, shipping from Thomann is really fast.

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Perfect for my small room

Vygantas 24.09.2021

I paired it to my Rokit 5 G4. Perfect size for them in my 12m2 room. Quality of construction feels very solid.

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Tight punchy lows !

Audio Mix Man 12.11.2024

Great tight punchy lows from krK for small to medium size Rooms . I use two ! with a pair of Kali in8 monitors to give full bandwidth and a wide stereo image in a Treated Control room . For me it’s a solution that produces phenomenal mastering quality monitoring ,without annoying the neighbours or the bank manager.

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KRK S8G4

Active Studio Subwoofer