Gr Bass GR 212+ SLIM-4 BLK BLACK
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Information
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Manufacturer Information
Gr Bass
https://www.grbass.com
info@grbass.com
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IMS Distribution
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Historical Context and Positioning in the Range
The GR BASS GR 212+ Slim-4 BLK fits within the brand's modern approach: offering bass cabinets that are both powerful, compact, and performance-oriented. This "Slim" version clearly targets bassists looking for the punch of a 2x12 without the bulk of a large stack, featuring a sleek black finish designed for both stage and studio use.
Who This Amp Is For
This cabinet is aimed at intermediate to professional bassists who want a reliable system for rehearsals, recording, and especially live performance. With its 900 W RMS, it suits styles demanding high volume and solid low-end response: rock, metal, funk, modern pop, fusion, or contemporary music requiring a clean low spectrum. In a 4-ohm configuration, it is particularly relevant if your head delivers full power at this impedance.
Features and Innovations
The GR BASS GR 212+ Slim-4 BLK is a bass reflex rear-ported bass cabinet, designed to provide volume, foundation, and good projection while maintaining a controlled size. Its configuration of 2 x 12" woofers offers an excellent balance between depth, impact, and clarity, while the 1" adjustable tweeter allows you to tailor the amount of high frequencies: softer for a warm, vintage sound, or brighter to emphasize finger attack, pick articulation, slap, and harmonics.
With its high sensitivity, this cabinet responds quickly and "speaks" easily: you get a solid result without having to push your amp's volume excessively. The slim format also facilitates integration on small stages, in crowded rehearsal spaces, or in a car trunk, while maintaining a true "breathing" cabinet feel.
Sound Character
The character of the GR BASS GR 212+ Slim-4 BLK Black lies in a modern and precise aesthetic: present lows capable of going deep, a low-midrange that retains body to support the band, and definition that remains clear when the mix gets dense. The stated frequency response (35 Hz to 22 kHz) reflects a desire for wide coverage: the woofers provide foundation and punch, and the tweeter takes over for clarity, attack, and brightness. Depending on your head (solid state, tube, hybrid, or modeling), this cabinet will highlight dynamics and grain while remaining neutral enough to respect your instrument's personality and your playing style.
Technical specifications
| Category | Bass cabinet |
| Cabinet impedance (Ω) | 4 Ω |
| Speaker diameter | 12" |
| Number of speakers | 2 |
| Color | Black |
| Finishing | Black tolex |
| Power output | 900 W |
| Power handling | 900 W RMS |
| Impedance | 4 ohms |
| Sensitivity | 102 dB SPL |
| Speakers | 2 x 12" woofers |
| Tweeter | 1" adjustable |
| Frequency response | 35 Hz to 22 kHz |
| Type of load | bass reflex |
| Port | rear |
| Finish | Black |
| Dimensions (W x D x H) | 74 x 38 x 35 cm |
| Weight | 19 kg |
| Power supply | 220 V |
Questions frequently asked
Is the GR Bass GR 212+ Slim-4 BLK compatible with a 4-ohm amp head?
Its 4-ohm impedance allows use with an amp head designed for this load. The rated power handling reaches 900 W.
What sound does this 2x12 bass cabinet offer?
The two 12-inch woofers cover a stated frequency response from 35 Hz to 22 kHz. The low end remains firm while the low-midrange adds body. The 1-inch adjustable tweeter allows controlling clarity and attack.
Can the tweeter of the GR 212+ Slim-4 be adjusted?
A 1-inch adjustable tweeter enables tailoring the presence of the highs according to playing style and desired tone.
What are the dimensions and weight of the GR Bass Slim 2x12 cabinet?
Measuring 74 x 38 x 35 cm and weighing 19 kg, this model features a slim format designed to minimize footprint. The finish is black tolex.
Does the rear bass-reflex affect the projection of the GR 212+ Slim-4?
The rear-ported bass-reflex enclosure contributes to low-end foundation. Its stated sensitivity of 102 dB SPL supports a high sound level without requiring excessive amplifier power.
