Dobrý den, chci se zeptat, jestli můj zesilovač utáhne vůbec tento středový reproduktor? Pořád se učím... Zesilovač Sony STR-DH790. Je to levnější kousek. Impedance 6 Ohm, 8 Ohm, 16 Ohm, ale reproduktory mají 4 Ohm. V tom vidím 1. problém a Výkon na kanál 145 W - reproduktory mají 200 W. W by měli stačit, co jsem se tak dočetl, ale ty Ohm ? Prosím o vysvětlení. Děkuju moc :)
Polk Reserve R400C Black (Piece)
Speaker - passive, with power performance of 200W, frequency range from 48 Hz to 39000 Hz, 2-band, impedance: 4,1 Ohm, analogue audio, Hi-Res audio, IMAX Enhanced
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15,190,-
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POL43e2
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Polk Reserve R400C Black (Piece)
15,190,-
In stock 1 pcs
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Polk Reserve R400C Black (Piece)
The Polk Reserve R400 is a passive two-way centre speaker designed for home cinema, with an emphasis on maximum dialogue clarity and precise mid-range sound reproduction. A more robust construction and larger drivers compared to lower-end models allow it to achieve higher power, deeper bass and wider sound dynamics. The speaker uses the advanced technologies of the Reserve series, including the Pinnacle Ring Radiator tweeter and a pair of 6.5” Turbine Cone mid-bass drivers, which ensure detailed and dynamic sound performance. Thanks to its Hi-Res Audio and IMAX certification, it supports the reproduction of modern lossless formats and offers a high level of detail.
Key Features of the Polk Reserve R400 Speaker, White
- Passive two-way centre speaker Polk Reserve R400 with X-Port technology
- Recommended amplifier power 20–200W
- Minimum impedance 4.1 Ohm
- Sensitivity 89dB (2.83V / 1m)
- Features a 1” Pinnacle Ring Radiator tweeter
- Two 6.5” Turbine Cone mid-bass drivers
- Hi-Res Audio and IMAX certified
- Compatible with Dolby Atmos and DTS:X
System Type
- Passive
Number of Channels
- Single speaker
Frequency Range
- 48–39,000Hz
Connection Type
- Speaker terminals
Construction and Drivers
The Polk Reserve R400 speaker uses a two-way design with one 1” Pinnacle Ring Radiator tweeter and two 6.5” Turbine Cone mid-bass drivers. The tweeter is designed for a wider dispersion of high frequencies and better coverage of the listening area. The Turbine Cone mid-bass drivers ensure high membrane stiffness while maintaining low weight, which allows for more accurate reproduction of mids and bass. The crossover frequency is set at 2,500Hz.
Sound and Technology
The speaker is certified for Hi-Res Audio and IMAX, which guarantees compatibility with advanced surround sound formats and optimisation for high-quality film content. The X-Port technology uses enclosed resonant channels (Eigentone filters) that eliminate unwanted resonances and ensure a cleaner and deeper bass performance. The speaker is optimised for home cinema and supports modern surround formats, including Dolby Atmos and DTS:X.
Connectivity and Compatibility
The Polk Reserve R400 speaker is equipped with a single pair of nickel-plated 5-way binding posts for connection to an amplifier or AV receiver. A minimum impedance of 4.1 Ohm requires a compatible amplifier, and the device supports amplifiers with 4, 6 and 8 Ohm outputs. The recommended amplifier power per channel is in the range of 20 to 200W. The speaker is supplied as a single unit intended for the centre channel of a home cinema.
System Type
An active speaker is one that has a built-in amplifier in its body. To listen, all you need to do is connect it to a sound source, either wired or wirelessly.Passive speakers are more often referred to as speaker systems. They are intended more for high-quality, loud, and dynamic listening in the comfort of your home and are not suitable for frequent carrying. The main advantage of passive speakers is the ability to connect various sources through a separate amplifier.
Number of Channels
The number of channels in speaker systems and home cinemas indicates the number of independent audio signals (speakers) and subwoofers, most often in the X.Y format (e.g., 2.0, 5.1). It denotes how many audio tracks are reproduced simultaneously, which determines the spatial experience and bass depth of the system, from basic stereo sound (2.0) to surround sound (5.1 and more).Specifications
Separate speaker
Connection type
200 W
48 Hz
System type
Separate speaker
Connections
Connection type
Characteristics
200 W
48 Hz
Frequency up to
4.1 Ohm
Features and functions
ARC
Surround sound formats
Soundbar dimensions
Width
Depth
Height
Central speaker dimensions
Width
Depth
Height
Weight
Total weight
Usage
Usage
Colour
Colour
Packaging
Number of loudspeakers
More Specifications
Note:
Specifications can be changed without notice. Images are for illustrative purposes only.
