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Fender Blues Junior upgrade

 
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LesterB
Member


Joined: 19 Nov 2004
Posts: 23

PostPosted: Fri Feb 18, 2011 4:54 am    Post subject: Fender Blues Junior upgrade Reply with quote

Hi,

sorry for bothering you with this, but I've just restarted playing with others after almost 15 years, and I feel I may need some tips..

Thing is, I am a teacher at the uni, and with some colleagues of mine we set up a band (well, that's really an overstatement...) with the aim of playing at an event organised by our students and show them that we are not all relics..
After a couple of rehearsals I found I still enjoy playing and I would like to continue doing it on regular basis.

I have a blues jr (black, green circuit board) and although I like the sound I am getting from this little amp, I'd like to see how I can improve it. Changing the stock tubes to JJs (2 JJ EL84 + 3 ECC83) already helped me to get a much better tone.

The stock speaker is a purpose-made Eminence, which apparently is known for being ok-ish, but not really great.

My guitar is a LP standard double cut and I tend to play a rock-blues southern rock style of music, although occasionally I could play something more zeppelin-like, depending on who I play with.

I had a look around at the celestion vs. tonker threads already, but I was wondering if anyone here had upgraded his Blues jr and was willing to share his thoughts/expertise here..

Thanks a lot in advance!

Beppe
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PaulG
Senior Member


Joined: 21 May 2004
Posts: 173
Location: Santa Barbara

PostPosted: Fri Feb 18, 2011 11:13 am    Post subject: Reply with quote

First of all, congrats on assembling the band and getting something going. Wish I had the chops (or stones) to do the same.

Secondly, I came upon this info a few years ago. I have NOT tried any of these mods, as I felt my old Blues Jr. was as good as I need it to be. However, I did contact the source of this info, and he promptly responded with tons of info. Much of that is here on these sites.

http://billmaudio.com/wp/

http://home.comcast.net./~machrone/bluesjunior.htm

I'm not sure where I found this contact, but perhaps on TGP.
Please provide any updates if you make any changes or mods, as I would be interested in your results.

Good luck.
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LesterB
Member


Joined: 19 Nov 2004
Posts: 23

PostPosted: Sat Feb 26, 2011 5:16 am    Post subject: Reply with quote

PaulG wrote:
First of all, congrats on assembling the band and getting something going. Wish I had the chops (or stones) to do the same.

Secondly, I came upon this info a few years ago. I have NOT tried any of these mods, as I felt my old Blues Jr. was as good as I need it to be. However, I did contact the source of this info, and he promptly responded with tons of info. Much of that is here on these sites.

http://billmaudio.com/wp/

http://home.comcast.net./~machrone/bluesjunior.htm

I'm not sure where I found this contact, but perhaps on TGP.
Please provide any updates if you make any changes or mods, as I would be interested in your results.

Good luck.


Hi Paul, thanks a lot for the encouragement!
The gig went quite well, despite LOTS of mistakes our students seemed to have enjoyed it quite a lot. They told us they had never realised that academics are human beings after all!

Back to your suggestion, I had had a look at billm mods before, but I was not very convinced I needed them, as my Blues Jr seemed to produce a decent tone at low-medium volumes.

After cranking it up a bit in a couple of occasions, however, I found the tone I was getting was a bit "boxy" and even a bit "farty" if this makes any sense. Although I am aware this is has been ascribed to many of B Jr's structural features, I decide to give Billm's mods a try. I am currently waiting for the components to be shipped to my address here in the UK, if you are interested in getting some updates from a poorly musically educated wannabe player I'll be more than happy to post them here! Smile
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LesterB
Member


Joined: 19 Nov 2004
Posts: 23

PostPosted: Fri Jun 10, 2011 5:19 am    Post subject: Reply with quote

I had the mods done.
I haven't had the chance to play it at very high volume yet. At volumes that won't make my neighbors shouting too much at me I can say that I like the tone I am getting quite a lot.
Someone elsewhere described this as lifting a veil that was covering the amp and I kind of agree with him.

Obviously these are my preliminary impressions, I'll see what happens when I crank it up a bit.

I had the following mods done:

Green Board Basic Kit
Presence control
Audio-taper master volume control
TO20 Heyboer
High-voltage preamp

Spere parts and instructions came at 120USD from Billm.
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PaulG
Senior Member


Joined: 21 May 2004
Posts: 173
Location: Santa Barbara

PostPosted: Sat Jun 11, 2011 11:30 am    Post subject: Reply with quote

Thanks for the update. Glad you found the mods worthwhile.

So, how difficult was it to do these yourself? Would one need to be an experienced electrical engineer to do these yourself?

Thanks and good luck with the blues, junior.
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LesterB
Member


Joined: 19 Nov 2004
Posts: 23

PostPosted: Mon Jul 04, 2011 4:47 pm    Post subject: Reply with quote

PaulG wrote:
Thanks for the update. Glad you found the mods worthwhile.

So, how difficult was it to do these yourself? Would one need to be an experienced electrical engineer to do these yourself?

Thanks and good luck with the blues, junior.



mmh I couldn't tell, I had them done by a technician at the local music shop.
He said it was not as easy as he thought it would be, but I am afraid this is all I know about it, sorry..
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