JBL T540
¥ 60,000 (1 set of 2, released in 1982)
Commentary
22.9x15cm2-way speaker unit developed for car audio.
The woofer uses the same SFG magnetic circuit as audio speakers to reduce distortion.
In addition, the voice coil of the drive system adopts a new method of edgewise winding with increased strength, heat resistance as well as efficiency.
The corn paper has a polypropylene coating that prevents direct moisture, such as water droplets that can enter when mounting the door, and prevents the corn from absorbing moisture in the air on a humid day.
The tweeter is angled approximately 15 degrees and is designed to face the driver when mounted in the rear tray.
Strong aluminum die-cast is used for the frame.
The T540 is equipped with a multi-amp drive terminal so that the woofer and tweeter can be driven by separate power amplifiers.
There was a mount spacer sold separately.
Model Rating
| Type | 22.9x15cm2-way speaker unit |
| Frequency characteristic | 40 Hz to 18 kHz |
| Allowable input | 100W |
| Impedance | 4 Ω |
| Sound pressure level | 92dB/W/m |
| Magnetic flux density | Low pass : 9,500 gauss |
| Weight of magnetic circuit | 1.8kg |
| Mounting Hole Diameter | 15.2x22.9cm |
| Mounting Depth Dimension | 8.4cm |
| Front External Dimensions | 19.1x26.4cm |
| Weight | 2.7kg |
| Sold Separately | Mount Spacer SK-M690 (2 pcs 1 set, ¥ 4,000) |
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