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ACC 001 - 10 uF 250 v Film Capacitor
$6.00 each

This is a premium 10 microfarad, 250 volt polypropylene film audiophile-grade capacitor I have manufactured exclusively for HUMAN Speakers. It is standard on all two way HUMAN Speakers systems that feature my concave dome tweeter, and is used as an upgrade in most of my crossover replacement products.

The vanishingly low dissipation factor (DF) is what makes it sound so good - the DF is a measure of how closely a capacitor aligns with, or deviates from, the perfect curve corresponding to XC=1/(2 π f C) - that is, the impedance is in exact inverse proportion to the frequency. This is especially important in a speaker crossover capacitor, since we are listening to several octaves of music through it, and no frequencies should be attenuated more or less than they are supposed to be.

Here are a few examples of DF measurements of various types of capacitor:

Black tube with red ends5010.6285.34%
Aluminum electrolytic1009.6436.67%
HUMAN Speakers 10 uF2509.9990.01%

Measured on a General Radio 1658 RLC Digibridge at 1 kHz. The last digit of the capacitance measurement tends to fluctuate +/- 0.002 with repeat measurements, the DF by +/- 0.01.

HUMAN Speakers ACC 001 10 uF capacitor

(Actual size approximately 1 1/2" by 3/4")

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