Vented back chamber horns - - tradeoffs ? - freddyi

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Vented back chamber horns - - tradeoffs ?

the late DJK (Dennis J. Kleitsch) reasoned the Klipsch La Scala's upper horn enclosure's volume of approximately 2 cubic feet could be added to the bass bin's rear chamber, vented, then boosted per 6th ordered assisted bass reflex to extend useful bass to a lower frequwency. An equalizer like the old Electro-Voice Interface box would be suitable.
In some cases (especially with power amplifier above the "flea watt" level) this type of hybrid may be a good compromise. What do you think of the subjective and objective tradeoffs vs leaving a horn with stock (or even reduced back chamber for certain drivers)?
If no active highpass filter is used then things will unload below the vented tuning. (more a problem with unfiltered turntable setups than "digital")

A stock Belle with 58 liter back chamber vented would have to be tuned in the mid 60's for a punchy result. Here's that case vs an equivalent sized "planar" (per MMJ at diyaudio)horn

Karlson Evangelist

Edits: 01/03/19 01/03/19

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Topic - Vented back chamber horns - - tradeoffs ? - freddyi 13:32:21 01/03/19 (0)

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