Hej

Er der nogle herinde, der ved om jeg kan bruge et par Fostex FE-166e i et par mini-voigt horn ? eller er det helt skævt

mvh hans

evox skrev: Hej Er der nogle herinde, der ved om jeg kan bruge et par Fostex FE-166e i et par mini-voigt horn ? eller er det helt skævt mvh hans

hej

Fostex FE-166e data
Måske denne tråd kan hjælpe dig
link


What is the EBP value?
- The LF driver's Efficiency Bandwidth Product (EBP) represents the tradeoff between the useful frequency range reproduced and the passband efficiency allowed by the driver in a horn loading system. The unit is Hertz.
Maximizing the system efficiency causes a restriction of the frequency response, on the contrary a wide bandwidth is only possible with reduced efficiency. The bandwidth/efficiency tradeoff is controlled by choosing an appropriate throat size of the horn.
It's clear that a woofer with a larger EBP value can yield a wider bandwidth or an higher efficiency in the horn system than a woofer with a smaller EBP. Also, EBP dictates the maximum available efficiency; it's not possible to design a horn system more efficient than the driver permits.
The EBP value is also useful to understand the LF performance of a woofer in direct-radiator enclosures (closed or vented). In order to obtain a flat alignment with an f(-3dB) around 40 Hz in a closed box, a woofer EBP around 50 Hz is enough; using a woofer with a larger EBP value will result in a higher f(-3dB). For a vented box, an EBP of no more than 100 is required in order to get the same LF cutoff.
It can be concluded that, while a horn loading system requires EBP values as large as possible to maximise efficiency or bandwidth, especially in mid-bass and midrange horns, direct radiator enclosures require much lower EBP values, if a flat and extended LF response is the design goal.

However, successful bass horn systems have been designed using woofers with EBP around 120-150 Hz. Although this value is only slightly larger than the one recommended for a bass-reflex cabinet, the restricted bandwidth required allows a good system efficiency.

Din enhed har en EBP   :     227  ;   so m betyder "The efficiency bandwidth product" på dansk effektive båndbrede

Thiele/Small

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