Thiel Owners

audiotweak - no we didn’t explore resistively vented enclosures. However, we did notice that leaky cabinets altered the bass response, acting like larger cabinets, and did muse how wonderful it would be to get a larger-acting enclosure via leaking.

Presently I am reading about aperiodic venting with an eye to combining it with equalization for a low-order bass rolloff that reaches deep with possibly less reactivity while requiring less EQ than a sealed box.

So much to learn, so little time.

@tomthiel, I think with the advancements in digital technology many might soon find traditional preamps superfluous.
 Wouldn’t such “leaky” cabinets compromise time integrity? 

Tom,

Thanks for your reply. Not many speakers claim to be aperiodic..
Dynaco A series were all of such design. I maybe sold a hundred of these back in the 70's. I new they had great bass for their size but didn't know why then but do now and I am trying to learn more.

A great device I used to tremendous benefit was a Mcintosh MQ series you could dial in a preset boost but my system was bi-amped then circa 1980.  Tom  AllegroSound * McIntosh MQ-101 Environmental Equalizer *  

unsound - I don't know how leaky / resistive enclosures would affect time response. My hunch is that the 2nd order closed box response would hold true while acting like a larger enclosure which of course throws off all the Thiele/Small paramater matching analysis. We treated leaks as a serious error to be fixed and never explored the realm. However, an aperiodic vent would be predictable and therefore could match different T/S paramaters for a different result. I don't know enough to comment further.

tweak - there's something there, but there's also something to be noted when an idea doesn't rise to the top as time goes by. In the late 90s, I made cabinets for Shanhinian. One of those models used a resistive bass loading developed in Germany for infrasonic weaponry. The bass was indeed deep for its size, but the frequency response was odd and the impedance was extremely reactive. No one else picked up on the idea and that speaker was the only one in Shahinian's line to use it. It remains a curiosity to me, much like transmission lines, but would require advanced work to learn the ropes and execute with success.