Re: [Harp-L] Re: Fender Blues Jr Amps

[Mike Fugazzi <mfugazzi67@xxxxxxxxx>]

The Mullard NOS 12at7 works great in V1.  It retains some of the punch of a 5751 or 12ax7 when compared to how a 12ay7 can really mellow out your tone.  In my research and experience, it is the only 12at7 that I would try somewhere other than a reverb or phase inverter slot.

I am using that tube in V1 on the "Refugee" and "Whippin Post" clips here: http://www.youtube.com/user/mikefugazzi

The amp I am using, an Allen Old Flame, has a master volume.  It was just over half way up here.  When cranked, there is a lot more punch.

 Mike Fugazzi
Vocals/Harmonica
"The Mike Fugazzi Band"
http://www.myspace.com/mikefugazzi
http://www.youtube.com/user/mikefugazzi


"Music should be healing; music should uplift the soul; music should inspire. There is no better way of getting closer to God, of rising higher towards the spirit, of attaining spiritual perfection than music, if only it is rightly understood."
-Hazrat Inayat Khan




________________________________
From: mfugazzi67 <mfugazzi67@xxxxxxxxx>
To: mfugazzi67@xxxxxxxxx
Sent: Thursday, December 18, 2008 9:41:06 AM
Subject: Re: [Harp-L] Re: Fender Blues Jr Amps

--- In harp-l-archives@xxxxxxxxxxxxxxx, "Rick Davis"
<bluesharpamps@...> wrote:

The 12AU7 tube is not interchangable with the 12AX7, even though they
share
the same pin out.  The AU7 draws significantly more power and may stress
your power supply.  I stay away from the AU7 when replacing AX7 tubes in
guitar amp to make it more harp friendly.  Instead, I use the 5751 (my
favorite preamp tube for harp) or the 12AY7.  Never use the 12AT7; it is a
horrible tube for tone.  It is a different animal designed for use as a
phase inverter.

Here is a handy chart;

http://thetubestore.com/gainfactor.html

-Rick Davis
The Blues Harp Amps Blog
http://www.bluesharpamps.blogspot.com/



On Thu, Dec 18, 2008 at 3:08 AM, Ian Farquharson <farky@...>wrote:

> The Blues Junior is ok for Harp but exchange a couple of of the pre amp
> tubes for AU 7's...to help with feedback issues,
> I think the Junior Pro is more suitable, no reverb....but the Reverb
on the
> Blues Junior is rubbish anyway, but also exchange 1 preamp tube to a AU
> 7....its cheaper too .
>
> The Fender Champion, is cheapest of the lot....but maybe lacks a bit of
> bottom.
> Far better to get a harpgear 2......around the same price of a Blues
> Junior....only 5 watts, but loud.....properly set up for harp with a
tube
> rectifier and a line out.
>
> Farky
> _______________________________________________
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