Can I expect speaker to mute completely if I use high impedance 2k ohm
headphones?
I still get some sound from the speaker.
I even plugged in a spare unwired phone plug.and still got speaker sound.
It looks to me like that should have created a open circuit to the speaker.
Is this normal or is something wrong with this thing?
I was trying to get out of rewireing it for low impedance phones

The HW101 puts the speaker and whatever is plugged into the headphone
jack in series. When nothing is plugged into the headphone jack, the
contacts in the jack directly ground the jack side of the speaker.

So, if you use high impedance headphones, you will still get a little
mumble out of the speaker, but not very much.

-Chuck

JOHN D wrote:
Can I expect speaker to mute completely if I use high impedance 2k ohm
headphones?
I still get some sound from the speaker.
I even plugged in a spare unwired phone plug.and still got speaker sound.
It looks to me like that should have created a open circuit to the speaker.
Is this normal or is something wrong with this thing?
I was trying to get out of rewireing it for low impedance phones

I don't remember where I saw it, but do a Google search, and look for =
Heathkit Mods. There was a mod to stop that very same problem. I did =
some restorations on three 101's a couple of years back, but just can't =
remember where it was. I did have it saved on one of my computers, but =
it crashed it's hard drive a few months back.

Good luck!



--
Mike-K5VSE
Formerly WB6VSE, senior tech, amateur division
SBE/Linear Systems, Watsonville, CA
All out going mail scanned with Norton AntiVirus 2005
On 3.922 nightly
In God We Trust

I know about the modification.
I was trying to go a different route and actually use high impedance phones
or build a little adapter box with an old output transformer to use low z
phones.