Ohm Walsh Micro Talls: who's actually heard 'em?


Hi,

I'd love to hear the impressions of people who've actually spent some time with these speakers to share their sense of their plusses and minuses. Mapman here on Audiogon is a big fan, and has shared lots on them, but I'm wondering who else might be familiar with them.
rebbi
The fortune cookie said: Experience is the name everyone gives to their mistakes...

So after an eye opening first part of the test we must now figure out
how the drivers work as a whole. I have tree different tweeters to test
the stock tweeter, a soft dome tweeter I had laying around and the ribbon tweeter that was my test unit for further evaluation.

As you can see there's two traces on the frequency sweep, the bottom
one is the active sweep and the upper one is the actual paused graph.

The first unit was the stock "SuperTweeter" 
This was a pleasant surprise, and you can see why it so pleasant
pretty flat with no surprises anywhere in the frequency band.
Now this could also be interpreted as safe, boring, and un-exciting.
http://s1248.photobucket.com/user/peterhorvath6233/media/image_zpspgkcxtbf.jpeg.html?sort=4&o=6

This frequency sweep is the no name tweeter 8ohm which is totally wrong as the stock unit measures 4ohm. It's a roller coaster but I didn't expect anything other than what you see.
http://s1248.photobucket.com/user/peterhorvath6233/media/image_zpspgcrafiz.jpeg.html?sort=4&o=0

Now to the Ribbon tweeter, This unit sounds great, sparkly but not etched or edgy, the problem is that it's a 5ohm unit and the lowest
usable frequency is 3k or so which is very obvious as it starts to dip around......3k. 
I am replacing this unit with something that can be X-over around
1.5k-2K and with the electronic X-over I can make a smooth transition
between the two drivers.
http://s1248.photobucket.com/user/peterhorvath6233/media/image_zpsw91rq7bm.jpeg.html?sort=4&o=5

Next I will try to play with the stuffing to see if that makes a difference.
I might also try to bypass some switches to see if freeing up the drivers 
from the switching network makes a difference.

Hope you guys enjoy the testing phase of my quest for better sound.

Can sound be creamy?...........Swedish Flag
 

Peter, thanks for all this engineering work. It is fun to "see" what is going on with these speakers. I concur that the mid-range can be attenuated in the Ohm-Walsh speakers. My 4XO speakers sound good, but the mid range needs some boosting to sound balanced. I have no trouble with the bass or treble.
Tomorrow Saturday I will also try to change the crossover frequency to 80-100hz cutoff 
to see if we can work the cone less hard and with that we can get some better mid/treble 
output should be interesting indeed....

Mr Ambien is calling so I better go.......🇸🇪

I’ll take the first stock Flat cheap tweeter I think.

You also should do some off axis measures if that matters for you. I’d like to know how the folded ribbon compares in particular.

Also have you seen the audio frequency response chart online? That would be helpful for assessing frequency deviations at certain frequencies with ear sensitivity at same and also how those relate to various instrument frequencies heard in music.
Good morning.....

Ill run a stepped frequency sweep from 20hz through 20khz that way we'll know
were it falters. I'll also will do some additional testing that I wrote about last night.
The dogs will hate me lol

Now it's eggs and espresso.........🇸🇪