Difference between revisions of "Elac 250-4 Pi"
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__NOTOC__ | __NOTOC__ | ||
| − | == | + | == Data == |
| − | {{ | + | {{navigation}} |
| − | ''' | + | '''General''' |
| − | * | + | * Manufacturer: [[Elac]] |
| − | * | + | * Model: 250-4 Pi |
| − | * | + | * Years of manufacture: 1985 to 1988 |
| − | * | + | * Manufactured in: |
| − | * | + | * Color: mahogany, walnut, oak. |
| − | * | + | * Dimensions: 460 x 1550 x 460 mm (W x H x D) with upper cover |
| − | * | + | * Weight: 90 Kg |
| − | * | + | * Original price approx.: 7498,- DM/piece |
| − | ''' | + | '''Technical Data''' |
| − | * | + | * Type: 4-Way Transmissionline Floorstanding Loudspeaker |
* Chassis: | * Chassis: | ||
| − | ** | + | ** Low frequency: 4x 175 mm |
| − | + | Low-midrange: 80 mm fabric dome tweeter | |
| − | + | Tweeter: MT25 25 mm fabric dome tweeter | |
| − | ** | + | ** tweeter: 4 Pi ribbon. 15 x 300 mm |
| − | + | Power handling (nominal/music): 170/220 Watt | |
| − | * | + | * Efficiency: 86 dB |
| − | * | + | * Frequency response: 18 - 28,000 Hz |
| − | * | + | * Transitional ranges: 560/1450/4000 Hz |
| − | * | + | * Impedance: 4 Ohm |
| − | * | + | * Rated power handling : 250 Watt |
| − | * | + | * Impulse power handling : 350 Watt |
| − | * | + | * Minimum impedance 1 : 2.3 ohms at 20,000 Hz |
| − | * | + | * Minimum impedance 2 : 2.8 Ohm at 3,200 Hz |
| − | * | + | * Efficiency : 83 dB / 1 Watt / Meter |
| − | * | + | * Maximum sound pressure: 107 dB |
| − | + | regarding the efficiency there are actually 2 different specifications, | |
| − | + | 83 dB and 86 dB. In the brochure of the 250 4 pi, Elac itself states an efficiency of 83 dB at 1 watt / 1 metre. On Elac's FTP server, in the product archive, the figure 86 dB can be found. | |
| − | + | One can agree that the efficiency is rather low, regardless of the difference of 3 dB. Certainly, the 250 4pi requires powerful power amplifiers, not only starting at approx. 150 Watts (120 Watts were specified at the time), but the power amplifiers should also be able to cope with the low impedance of only a little more than 2 Ohms. | |
| − | ''' | + | '''Special features'''' |
| − | * | + | * list here |
| − | 4 Pi | + | 4 Pi ribbon tweeter |
| − | |||
| − | + | developed by Elac in collaboration with the Dutch group Bakker / van den Hul | |
| − | |||
| − | == | + | == Remarks == |
| + | Other models of the same series: | ||
| − | == | + | == Pictures == |
| + | |||
| + | == Reports == | ||
== Links == | == Links == | ||
| − | [[ | + | [[Category:Loudspeaker]] |
Latest revision as of 02:37, 3 November 2018
Data[edit]
General
- Manufacturer: Elac
- Model: 250-4 Pi
- Years of manufacture: 1985 to 1988
- Manufactured in:
- Color: mahogany, walnut, oak.
- Dimensions: 460 x 1550 x 460 mm (W x H x D) with upper cover
- Weight: 90 Kg
- Original price approx.: 7498,- DM/piece
Technical Data
- Type: 4-Way Transmissionline Floorstanding Loudspeaker
- Chassis:
- Low frequency: 4x 175 mm
Low-midrange: 80 mm fabric dome tweeter Tweeter: MT25 25 mm fabric dome tweeter
- tweeter: 4 Pi ribbon. 15 x 300 mm
Power handling (nominal/music): 170/220 Watt
- Efficiency: 86 dB
- Frequency response: 18 - 28,000 Hz
- Transitional ranges: 560/1450/4000 Hz
- Impedance: 4 Ohm
- Rated power handling : 250 Watt
- Impulse power handling : 350 Watt
- Minimum impedance 1 : 2.3 ohms at 20,000 Hz
- Minimum impedance 2 : 2.8 Ohm at 3,200 Hz
- Efficiency : 83 dB / 1 Watt / Meter
- Maximum sound pressure: 107 dB
regarding the efficiency there are actually 2 different specifications, 83 dB and 86 dB. In the brochure of the 250 4 pi, Elac itself states an efficiency of 83 dB at 1 watt / 1 metre. On Elac's FTP server, in the product archive, the figure 86 dB can be found. One can agree that the efficiency is rather low, regardless of the difference of 3 dB. Certainly, the 250 4pi requires powerful power amplifiers, not only starting at approx. 150 Watts (120 Watts were specified at the time), but the power amplifiers should also be able to cope with the low impedance of only a little more than 2 Ohms.
Special features'
- list here
4 Pi ribbon tweeter
developed by Elac in collaboration with the Dutch group Bakker / van den Hul
Remarks[edit]
Other models of the same series: