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gptkbp:instance_of
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gptkb:sound_system
|
|
gptkbp:arcade_cabinet
|
wood veneer
|
|
gptkbp:availability
|
vintage markets
|
|
gptkbp:collectibility
|
high among vintage audio enthusiasts
|
|
gptkbp:color
|
walnut
|
|
gptkbp:community
|
vintage audio forums
|
|
gptkbp:compatibility
|
various amplifiers
|
|
gptkbp:cooking_method
|
gptkb:textiles
|
|
gptkbp:crossover
|
capacitors and inductors
passive crossover
1200 Hz
|
|
gptkbp:cultural_impact
|
recognized in audio history
|
|
gptkbp:design
|
two-way speaker system
|
|
gptkbp:design_date
|
1960s audio design
|
|
gptkbp:design_philosophy
|
accurate sound reproduction
|
|
gptkbp:dimensions
|
12 x 8 x 10 inches
|
|
gptkbp:driver
|
dynamic driver
|
|
gptkbp:frequency
|
40 Hz to 20 k Hz
|
|
gptkbp:historical_impact
|
set standards for future speakers
|
|
gptkbp:historical_significance
|
influenced speaker design trends
|
|
gptkbp:history
|
AR-4x, AR-4a
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
AR-4 loudspeaker
|
|
gptkbp:impedance
|
8 ohms
|
|
gptkbp:influences
|
AR-3a, AR-2ax
|
|
gptkbp:input_output
|
passive
|
|
gptkbp:interior_features
|
sealed
|
|
gptkbp:legacy
|
pioneered modern speaker design
|
|
gptkbp:maintenance
|
requires minimal upkeep
|
|
gptkbp:manufacturer
|
gptkb:Acoustic_Research
|
|
gptkbp:market_segment
|
consumer audio
|
|
gptkbp:modifications
|
popular for upgrades
|
|
gptkbp:notable_features
|
high-quality sound reproduction
|
|
gptkbp:number_of_stages
|
wide and immersive
|
|
gptkbp:power_consumption
|
25 watts RMS
|
|
gptkbp:price
|
$150 per pair
|
|
gptkbp:production_years
|
1961-1969
|
|
gptkbp:related_products
|
AR-2, AR-3
|
|
gptkbp:responds_to
|
smooth and detailed
clear and present
|
|
gptkbp:restoration
|
common among enthusiasts
|
|
gptkbp:reviews
|
generally positive
|
|
gptkbp:sensitivity
|
87 d B
|
|
gptkbp:signature
|
warm and inviting
|
|
gptkbp:social_media
|
1-inch soft dome tweeter
|
|
gptkbp:sound
|
deep and controlled
natural and balanced
|
|
gptkbp:sound_design
|
acoustic suspension
|
|
gptkbp:sound_testing
|
performed in various environments
|
|
gptkbp:successor
|
AR-4x
|
|
gptkbp:target_audience
|
audiophiles
|
|
gptkbp:type
|
bookshelf speaker
|
|
gptkbp:usage
|
home audio systems
|
|
gptkbp:user_base
|
loyal and dedicated
|
|
gptkbp:user_reviews
|
often highlight value for money
|
|
gptkbp:weight
|
12 lbs
|
|
gptkbp:woofers
|
8-inch woofer
|
|
gptkbp:year_established
|
gptkb:1961
|
|
gptkbp:bfsParent
|
gptkb:Acoustic_Research
|
|
gptkbp:bfsLayer
|
7
|