Dumb question?

[macula56]

i see people talking about master volumes. since pre and post both begin with the letter P, is PPIMV a pre PI or post PI master volume? if it's post, then are you talking about something like the matchless type? thanks. jmac

[RossH]

My experience is that most people mean post PI when they write that acronym but each individual may use it differently. We should be more specific.

There are 3 or 4 differing post PI masters and the crossline Matchless is one of them. Here is a link for the MV section of the trainwreck pages.

http://theoctave.home.comcast.net/mv-type1.jpg
http://theoctave.home.comcast.net/mv-type2.jpg
http://theoctave.home.comcast.net/mv-type3.jpg
http://theoctave.home.comcast.net/mv-type4.jpg

Hope this helps,
Ross

[RossH]

I forgot the corresponding text. Here it is:

http://theoctave.home.comcast.net/tw-mv-text.jpg

Also, here is the original DC30 schemo to see the crossline:

http://theoctave.home.comcast.net/dc30_fact_color.gif

~ Ross

[macula56]

thanks. i've used a couple of the KF variations. i've heard a lot of good comments on the dc30 variety. excellent schematic.

[Necrovore]

If I'm not mistaken isn't type 4 a Pre phase inverter type master volume? That one looks pretty much like what is on a Marshall 2203/4.

[RossH]

Yes, #4 is the basic pot to ground type which is a pre-PIMV.

There are a bunch of people who don't like the crossline style but I have to say, I do. It is easy, you can make it switchable and it sounds good.

~ Ross