Tag Archives: speakers

JBL L100 Century Speakers

18 Feb

JBL L100 Century Vintage Speakers

Photo Credit: Starsky on eBay

JBL L100 Century Speakers

Irv Stern came up with the felicitous name of "The Century" to go with its L100 sales number. After its introduction at the 1970 summer Consumer Electronics Show in Chicago, the L100 went on to become not only JBL's most successful product up to that time but, from all indications, the best-selling loudspeaker system of the decade.

 

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Acoustic Research AR-90 Speakers

4 Dec

Acoustic Research AR-90 Speakers

 

Acoustic Research AR-90 Speakers

The three most distinctive applications of this technology in the AR-90s are the Acoustic Blanket, the vertical, upper-range driver array, and the positioning of the two woofers, one on each side of the enclosure.   The AR-9 is the big brother to this one. The AR-90 and AR-9 share the same mid and high drivers, but 2 x 12" woofers in each cabinet instead of 2 x 10".

System 4 ways, 5 speaker acoustic suspension system, and a Tallboy type
Use unit For low-pass: 25cm corn type x2
For inside low-pass: 20cm corn type
a crown -- : for regions -- a 3.8cm dome shape
For high regions: 1.9cm dome shape
Frequency response 23Hz - 30kHz
Low-pass play frequency 32Hz -3dB
System Q 0.8
Output sound pressure level 87dB/W/m
Impedance 4ohms (a minimum of 3.2ohms)
The continuation maximum input 150W
The maximum input 300W
Crossover frequency 200Hz, 1.2kHz, 7kHz
Level control Inside low-pass: Three-step switching
mid-high range: three-step switching
High region: Three-step switching
Content volume 90L
Dimensions Width 368x height 1102x depth of 386mm
Weight 37kg

 

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Vintage Sony Audio Equipment

26 Apr

How many pieces can you name?

 

Vintage Sony Audio Equipment

Vintage Sony Audio Equipment (circa 1976)

JBL L100 Century Speakers

22 Mar

JBL L100 Speakers

 

JBL L100 Century LoudSpeakers

The L100 was the consumer version of JBL's 4310/4311 pro monitors, and contained with it the same 12-inch woofer, 5-inch midrange and 1.4-inch paper cone tweeter. All of the drivers had large Alnico V magnets. The midrange and tweeter relied on a very simple crossover network, but the woofer had a direct connection to the amplifier. Some say that minimalist crossover played a part in the speaker's lively dynamics, the L100 epitomized early 1970s West Coast sound.

After its introduction at the 1970 summer Consumer Electronics Show in Chicago, the L100 went on to become not only JBL's most successful product up to that time but, from all indications, the best-selling loudspeaker system of the decade.

 

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