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In Reply to: RE: VOT A7 systems sensitivity? posted by used-hifi on September 10, 2016 at 18:12:02
my gut guess would be for half space ~98dB in the area below the horn's cutoff rising somewhere to 105dBand this input of an A7 with port area blocked to 1/2 I nabbed somewhere shows pretty much that region - not sure if that's a 515 or 416
put a modern HF on the horn, damp the horn, etc. IIRC Tom Danley has some suggestions for this classic
Karlson Evangelist
Edits: 09/10/16Follow Ups:
Hi Freddyi,
I've heard of people mention and praise Danley's VOTT mods but nobody can recall any specifics. Do you have any info you can share?
Regards,
David
Edits: 09/10/16
no - i didn't keep up with Tom's posts - if he's mentioned specifics then those should be pretty easy to find - or he'll chime in and give them.Its sounds like he really gets the old A7 going - I've only heard one A7 on one channel in the early 1970's in a small room of the late Don Nicol's "High Fidelity Center" in Huntington, WV and that particular A7 sounded like its highs only went to around 10K. .I was only around 6 or 7 feet back so things didn't fully integrate
here's one post from 2009 Getting around to the subject but
I can't find anything concrete - but here's some lore on Using light bulbs for protection
Karlson Evangelist
Edits: 09/10/16
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