Fw: [Harp-L] Quick Bassman Ltd Review

["Gary Bohannon" <beauxart2@xxxxxxxxxxx>]

I agree with Ralf... Michael you should try to find some sort of a hi-Z mic 
to run thru the amp.  Is there any friend of yours that has a regular 
Astatic or Shure hi-Z mic?

The second thing that might help is to go with 12AU7 preamp tubes to take 
the gain factor down on the amp.  Or try 3 12AY7's if you can't find AU's. 
That should help you get the thing up in the "tone zone".

Hope that helps!
Gary
----- Original Message ----- 
From: "Ralf K. Buschner" <r_buschner@xxxxxxxxxxx>
To: <harp-l@xxxxxxxxxx>
Sent: Sunday, March 06, 2005 5:10 AM
Subject: Re: [Harp-L] Quick Bassman Ltd Review


> Mike,
>
> > I recieved my Bassman Ltd this weekend in its orginal packaging.  There
> > have been no mods or changes to it.  I don't use bullet mics much at all,
> > and have tried the amp with a sm 57 and an Audix OM-5.  My statements are
> > about the amp in comparison to my sound through other amps that I have 
> > like
> > for their break up, etc.
>
> i assume, these microphones both are lo Z (impedance). If so, they have 
> much
> less output than a high Z microphone. Let's have a look on the Shure 545,
> known as the "Paul Butterfield"-mic:
>
> In lo Z wiring it has -78 dBV, wired in high Z it gives -55 dBV. That 
> means a
> voltage of 0.125 mV compared to 1.76 mV - that's a factor of 14 more! And
> this is, from where the distortion results! And all these vintage bullets, 
> no
> matterwhich element they have magnetic, dynamic or crystal element inside,
> are so gritty, because they deliver a high output - and have high Z.
>
> So my advice, before you sell the Bassman: Give it a try with a high Z 
> mic,
> and you'll get a completely different tonal characteristic.
>
> Bye,
> Ralf