Poland

Unitra was a Polish manufacturer of consumer electronics, specializing in audio equipment such as radios, tape recorders, and amplifiers.

Unitra

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The ZGB-401 Speaker set from Unitra is a powerhouse of sound neatly packed into a bass-reflex bookshelf speaker design. Made to enthuse both novices and audiophiles alike, these speakers integrate closed construction dynamics with a bass-reflex system, tailored to enhance audio performance. The high and low-midrange transducers selected are known for their efficiency and contribute to the system's ability to produce clear, dynamic, and effective sound outcomes. These speakers can be effortlessly paired with various amplifiers which makes them a highly versatile addition to any audio system setup.

Priced at PLN 12,499, the ZGB-401 speakers offer modern sound in a classic form. This compact system is highlighted by its advanced 2-way system with a precise crossover that promises a linear sound characteristic, ensuring faithful reproduction of musical material. The cutting-edge design also encompasses a high-frequency transducer and an aluminum-ceramic membrane for the low-midrange transducer, enhancing the rigidity and reducing mass. The inclusion of a bass-reflex port plug facilitates adjustments to different acoustic conditions, ensuring high-quality sound in variably sized spaces.

The speakers use a well-regarded bass-reflex enclosure design, featuring a tuned port and a 6-inch transducer with an aluminum-ceramic membrane for minimal distortions. The aluminum-magnesium dome of the tweeter improves the directional characteristics, offering a broad and coherent sound reproduction. For acoustic versatility, the design accommodates a bass-reflex port plug, enabling modifications suitable for smaller or challenging acoustic environments.

Intricate crossovers are part of its design; an advanced 3rd-order passive crossover helps optimize frequency division between the speakers, maximizing their performance and minimizing interferences. This is done using premium components including air coils and metalized polypropylene capacitors that sustain a consistent characteristic across the frequency range. The design also ensures a smooth impedance characteristic, accommodating amplifiers with sensitivity to load impedance changes.

Its exceptional double box design enhances structural rigidity, significantly reducing vibrations and parasitic resonances, which in turn, refines the audio quality. The natural wood veneer finish, available in finishes like Black Ash or American Walnut, and optional grilles in standard black or Polish linen, further accentuates its sophisticated appearance.

**Product specifications are as follows:**
- Frequency Response: 60Hz - 23kHz
- Sensitivity: 87 dB
- Impedance: 4 Ω (minimum 3.5Ω)
- Power Rating: 60W RMS
- System: 2-way
- Crossover Frequencies: 700 Hz / 2.4 kHz
- Enclosure Type: Bass-reflex (with port plug)
- Connector Type: Dual (bi-wire / bi-amp)
- Tweeter: 27 mm aluminum-magnesium
- Midwoofer: 6” aluminum-ceramic
- Dimensions (H x W x D): 380 x 210 x 280 mm
- Weight: 2 x 10.5 kg
- Grille: Black acoustic fabric or natural linen
- Finishes: Real wood veneer (Black Ash or American Walnut)
- Material: Two layers of MDF (total thickness: 20 mm / 0.8 in)

For those looking for a sound experience that marries modern acoustic engineering with traditional design elements, the ZGB-401 is an outstanding choice. This perfect blend enables it to deliver extraordinary sound quality in a package that beautifies the space it occupies.

ZGB-401

by Unitra

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