.They are 8 ohm and have been frequency swept and
> are fully operational thru their designed range-2500 to 15KHz for the 075s
> and 7000-21.5KHz for the 077s(my hearing range  went just beyond 17KHz).I
> hooked them up to appropriate crossovers-12dB/octave(2nd order) and played
> music thru them and they sound Absolutely Magnificent!      They are in
> 9.99999 condition!At most they are missing a few flecks of paint here and
> there which is why I didn't give them a 10 rating.They are guaranteed not
to
> be DOA.They are not 'system pulls'.They are factory fresh without the box
> and no mounting ring.This is a once in a lifetime opportunity to own a
pair
> of these renowned tweeters in factory fresh condition.I compared my 2405
> 'slots' to the 077s and the 077s are definitely smoother.I will sell these
for less than the
> Manufacturers Suggested Retail List Price of the 2400 series.I know how
much
> they're worth and so do you if your looking at this post.Serious offers
only
> please.I really don't want to part with these 'jewels' but I don't need
> them.E-mail me for pictures and more info.Thank You D.C.