Colin,
I think putting another box in the audio chain will only increase the
hum, but you're probably right about the wall wart. It bothers me
that the hum gets better or worse depending on where I place the unit
in the shack. I did figure out that the hum is generated somewhere
in the equalizer, and not in the mic cable. It would help if the
radio had a balanced input, but it doesn't. I should really ground
the case and see what happens.
Steve
On Thursday 10/26/06 17:50 Colin McDonald wrote:
>not sure how much better it can get....he uses isolation transformers in the
>audio string, and full metal casing, as well as ferrite filters inside....
>Perhaps you need the W2ihy I box which will add another level of isolation
>and shielding to your string.
>Also, have you tried using a well filtered power supply to run the 8 band
>eq? or just the wall wart.
>Wall warts are natoriously unfiltered so perhaps that is where the hum is
>coming from.
>Also audio cables can pick up hum as well.
>73
>Colin, V A6BKX
>----- Original Message -----
>From: "Steve Dresser" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Thursday, October 26, 2006 3:11 PM
>Subject: Re: tmv7 mike
>
>
> > True, but I think the isolation and shielding should be better for that
>price.
> >
> > Steve
> >
> > On Thursday 10/26/06 11:56 Colin McDonald wrote:
> > >Actually, $249 for a peace of equipment like that is dead on industry
> > >standard pricing.
> > >Anything in the studio audio field would be around that, or even a bit
>more
> > >for the same functionality.
> > >73
> > >Colin, V A6BKX
> > >----- Original Message -----
> > >From: "Steve Dresser" <[log in to unmask]>
> > >To: <[log in to unmask]>
> > >Sent: Thursday, October 26, 2006 7:17 AM
> > >Subject: Re: tmv7 mike
> > >
> > >
> > > > Howard,
> > > >
> > > > Mostly, I like it, although there are a couple of things that bother
> > > > me. It picks up more hum than it should from external sources such
> > > > as wall warts, and I've found that I have to be careful where I put
> > > > it in the shack. In all fairness, I haven't tried grounding the case
> > > > because it doesn't have a grounding post, and I haven't gotten around
> > > > to improvising one. That said, the equalizer itself works well, and
> > > > I like the switchable configuration on the 8-pin plug. I also like
> > > > the fact that it has an XLR connector, although I haven't tried it
> > > > yet. There's even a phantom supply capability, but again, I haven't
> > > > used it. The noise gate is a little more touchy than I'd like it to
> > > > be, so I don't use it. Instead, I prefer to lower my gain so I don't
> > > > pick up all the equipment noise in the shack. I also think the
> > > > equalizer is a little pricey, but I suppose that's because it's not
> > > > mass-produced. I'd give it a 4 out of 5.
> > > >
> > > > Steve
> > > >
> > > > On Thursday 10/26/06 00:22 Howard Kaufman wrote:
> > > > >I hear that is the case, maybe if you are using an amplified
> > > > >mike. How do you like the equalizer?
> > > > >
> > > > >
> > > > >--
> > > > >No virus found in this outgoing message.
> > > > >Checked by AVG Free Edition.
> > > > >Version: 7.1.408 / Virus Database: 268.13.11/496 - Release Date:
> > >10/24/2006
> >
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