Mr Spock
demokratischer - sektor
- Μηνύματα
- 18.456
- Reaction score
- 50.606
BL says the Stage A170 is "a 2.5-way design": The top woofer operates as a mid-woofer in a traditional two-way loudspeaker and crosses over to the tweeter at 2.8kHz; the bottom woofer is rolled off sooner, at 1.8kHz. The main intention of this strategy is to broaden the A170's dispersion in the tweeter/mid crossover region, while adding cone-area and piston-power to the midrange and bass regions
The Stage A170's high-frequency driver uses a 1" aluminum dome in something JBL calls a "high-definition imaging waveguide." I translate that to mean: The tweeter's dispersion is controlled on both the vertical and horizontal axis. You can translate that to mean the A170s are engineered to image well
The JBL Stage A170s were surprisingly effective in helping me compare these two "Mystery Train" recordings. The A170s showed how much the Elvis version depended on vocal artistry, framed by an extraordinary backup band as well as Sam Phillips' simple, solid production. What surprised me was how obviously the JBLs displayed Presley's emotional detachment
, and how mournfully expressive they showed the Junior Parker version to be. I had never before noticed these emotional aspects and was thankful for the realization.
JBL Stage A170, acoustic crossover on tweeter axis at 50", corrected for microphone response, with nearfield woofer (green) and port (red) responses respectively plotted below 355Hz and 1kHz.
JBL Stage A170, anechoic response on tweeter axis at 50", averaged across 30° horizontal window and corrected for microphone response, with the complex sum of the nearfield woofer and port responses plotted below 300Hz
To sum up, JBL's Stage A170 offers excellent measured performance, especially considering its affordable price.—John Atkinson
Description: 2.5-way, floorstanding, reflex-loaded loudspeaker. Drive-units: 1" aluminum-dome tweeter, two 5.25" polycellulose-cone midwoofers. Crossover frequencies: 1.8kHz, 2.8kHz. Frequency range: 44Hz–40kHz. Sensitivity: 89dB/2.83V/m. Nominal impedance: 6 ohms. Recommended amplifier power: 20–200W.
Dimensions: 7.5" (190mm) W by 36.7" (930mm) H by 10" (255mm) D. Weight: 31.6lb (14.3kg).
Finish: Pantone black or two-tone wood.
Serial numbers of units tested: TR0050-G30002167 & '2130. ("Designed and Manufactured in the USA. Made in China")
www.stereophile.com
General Specifications
2.5 way, dual 5.25", 1" aluminum tweeter floor standing loudspeakerYes
2 x 5.25" (133mm) Polycellulose Low-Frequency WooferYes
New High Definition Imaging (HDI) WaveguideYes
1” (25mm) Aluminum Dome TweeterYes
Recommended Amplifier Power20 – 200W
Frequency Response44Hz – 40kHz
Sensitivity89dB @ 1M, 2.83V
Nominal Impedance6 Ohms
Crossover Frequencies1.8kHz, 2.8kHz
Enclosure TypeBass-Reflex via Rear-Firing Tuned Port
Dimensions (W x D x H)190 x 255 x 930mm
Weight31.61 lbs (14.34kg)
www.jbl.com
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The Stage A170's high-frequency driver uses a 1" aluminum dome in something JBL calls a "high-definition imaging waveguide." I translate that to mean: The tweeter's dispersion is controlled on both the vertical and horizontal axis. You can translate that to mean the A170s are engineered to image well
The JBL Stage A170s were surprisingly effective in helping me compare these two "Mystery Train" recordings. The A170s showed how much the Elvis version depended on vocal artistry, framed by an extraordinary backup band as well as Sam Phillips' simple, solid production. What surprised me was how obviously the JBLs displayed Presley's emotional detachment
, and how mournfully expressive they showed the Junior Parker version to be. I had never before noticed these emotional aspects and was thankful for the realization.JBL Stage A170, acoustic crossover on tweeter axis at 50", corrected for microphone response, with nearfield woofer (green) and port (red) responses respectively plotted below 355Hz and 1kHz.
JBL Stage A170, anechoic response on tweeter axis at 50", averaged across 30° horizontal window and corrected for microphone response, with the complex sum of the nearfield woofer and port responses plotted below 300Hz
To sum up, JBL's Stage A170 offers excellent measured performance, especially considering its affordable price.—John Atkinson
Description: 2.5-way, floorstanding, reflex-loaded loudspeaker. Drive-units: 1" aluminum-dome tweeter, two 5.25" polycellulose-cone midwoofers. Crossover frequencies: 1.8kHz, 2.8kHz. Frequency range: 44Hz–40kHz. Sensitivity: 89dB/2.83V/m. Nominal impedance: 6 ohms. Recommended amplifier power: 20–200W.
Dimensions: 7.5" (190mm) W by 36.7" (930mm) H by 10" (255mm) D. Weight: 31.6lb (14.3kg).
Finish: Pantone black or two-tone wood.
Serial numbers of units tested: TR0050-G30002167 & '2130. ("Designed and Manufactured in the USA. Made in China")
JBL Stage A170 loudspeaker
In the realm of loudspeaker reviews, John Atkinson's measurements and my empirical observations have one important equivalency: Both are meaningless abstractions until confirmed by your listening experience. Both are contingent on factors that are necessarily obtuse and not especially controllable.
General Specifications
2.5 way, dual 5.25", 1" aluminum tweeter floor standing loudspeakerYes
2 x 5.25" (133mm) Polycellulose Low-Frequency WooferYes
New High Definition Imaging (HDI) WaveguideYes
1” (25mm) Aluminum Dome TweeterYes
Recommended Amplifier Power20 – 200W
Frequency Response44Hz – 40kHz
Sensitivity89dB @ 1M, 2.83V
Nominal Impedance6 Ohms
Crossover Frequencies1.8kHz, 2.8kHz
Enclosure TypeBass-Reflex via Rear-Firing Tuned Port
Dimensions (W x D x H)190 x 255 x 930mm
Weight31.61 lbs (14.34kg)
JBL Stage A170 | Home Audio Loudspeaker System
Designed and engineered in JBL’s world-famous acoustic engineering facility in Northridge, California, the Stage A170 is the most compact floorstanding loudspeaker of the JBL Stage Series. The narrow footprint features a 2 ½-way design with patented High-Definition Imaging (HDI™) waveguide...
www.jbl.com
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