Les wrote:
The Timewave 599ZX is the best out there, period! Plus it has a 5000 hz
(5 khz) bandwidth. The notch, noise reduction etc . is superb. It isn't
cheap, but you get what you pay for. I have owned the various JPS, MFJ,
etc. They don't come close to the 599ZX.

I disagree about the noise reduction. The other features are nice, in particular
you get an actual frequency readout of what you're setting, but the noise reduction
is pretty old-fashioned, and makes it sound muffled.

ClearSpeech has the best noise reduction I've heard, but no other features, and
often the other features are what you want.

The Am-com ClearSpeech has no settings at all other than on-off but I use it a lot.
The Heil version I haven't figured out. It has several steps of Clear Speech
NR, which is nice, but the audio levels are all wrong, and (fatally) it cuts out
low frequencies and high frequencies whether it's bypassed or not. (The unit returned
by Heil works better than the way I got it the first time, but still is susceptible
to feedback and strange lack of line-out output. The former is undoubtedly a ground
loop in audio path via the power supply, which is an engineering mistake. The latter
may be an impedance problem but there's not enough in the manual (?) to tell. I
haven't tried to experiment with matching transformers, being discouraged by the
audio frequency loss and the feedback. So, in short, if you're not willing to fuss
with it a lot, you're not likely to be real happy except perhaps using it as a speaker
rather than a filter box.)

My solution is to get every filter and wire them in series (hence my need for a
functioning bypass). Turn on the ones you need.

--
Ron Hardin


On the internet, nobody knows you're a jerk.