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Post subject: blues jr question.
Posted: Fri Jun 25, 2010 3:05 pm
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ok i have a question.
finally after several weeks of trying to get everybody
out of the house and those living next to me gone at the same time,
it happened...........
i finally got to hit the volume on the blues jr.
i put it little over half way.
it seemed that my highs werent as pronounced as they were at lower volumes. if i picked notes individually they rang nice and clean. when i hit a chord they didnt seem to ring out as they should have.
im using my MIM ash body tele if that helps.
maybe i wasnt paying attention close enough. i only got to jam for a few minutes but it seemed like there was something missing in the highs section. anybody have any ideas on this?
is it my amp, my guitar, or me?
a combo of all 3 is a cheap shot and no points scored. :P


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Posted: Fri Jun 25, 2010 3:31 pm
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Not sure what to tell you. I have a Blues Jr. NOS and I play a Telecaster TC 90 with P90 pups. My Blues Jr. simply oozes tone. I was just hammering out some tunes with EC on the player and I just about peed my pants the tone was so good.

:D

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Posted: Fri Jun 25, 2010 3:34 pm
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What did you have your mids and bass set on?As you turn up your amp the eq responds differently,try backing off the mids and bass and see if that brings out your highs-that's assuming that you have the treble on full. I have used my MIM Tele with my Blues Jr. on full tilt boogie and find with the mid on 12 o'clock and the bass at 1 or 2 o'clock there's plenty of treble response.

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Posted: Fri Jun 25, 2010 4:02 pm
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Most probably the amp.

They come biased way too hot, the tone stack and reverb are both a bit subpar.
You dont hear it as much at lower volumes. When you turn it up and start stressing the power amp section it becomes apparent.

You can try new valves, I didn't find they made a awful lot of difference. You could get the bias lowered. Get it to a tech to do it though, it's a very difficult amp to bias. Especialy if you dont know what your doing.

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Posted: Fri Jun 25, 2010 4:04 pm
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guitslinger wrote:
What did you have your mids and bass set on?As you turn up your amp the eq responds differently,try backing off the mids and bass and see if that brings out your highs-that's assuming that you have the treble on full. I have used my MIM Tele with my Blues Jr. on full tilt boogie and find with the mid on 12 o'clock and the bass at 1 or 2 o'clock there's plenty of treble response.



you could be on to something here. my bass was on 7 mids about 4
trebble was cut back as well. i did crank the treb up a bit but there wasnt a very big noticable difference. maybe i should have cut my bass back to 5.
if i cut it back any more than that then there would be no choice but for
highs to come through.


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Posted: Sat Jun 26, 2010 3:44 am
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way cool jr wrote:
guitslinger wrote:
What did you have your mids and bass set on?As you turn up your amp the eq responds differently,try backing off the mids and bass and see if that brings out your highs-that's assuming that you have the treble on full. I have used my MIM Tele with my Blues Jr. on full tilt boogie and find with the mid on 12 o'clock and the bass at 1 or 2 o'clock there's plenty of treble response.



you could be on to something here. my bass was on 7 mids about 4
trebble was cut back as well. i did crank the treb up a bit but there wasnt a very big noticable difference. maybe i should have cut my bass back to 5.
if i cut it back any more than that then there would be no choice but for
highs to come through.


As per my recent experience as you have viewed on my post.

Dude I would suggest that you replace your EL84 Power Tubes.

I agree with Niki....

When I changed mine yesterday, all of a sudden I had a boost and tighter response of my BASS/MID/TREBLE..

Not an expensive experiment at all...give it a go... :)


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Posted: Sat Jun 26, 2010 6:09 am
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ok so replace the tubes with what,
and whats the advantages of that tube?
any links to where i can buy the tubes?


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Posted: Sat Jun 26, 2010 6:51 am
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Get the amp to a tech and have him lower the bias. The amp is biased way too hot, you can throw all the valves at it you want. All you will do is maybe notice a change for a week or two then as the valves wear the amp will slip back to it's old sub-par performance.

Really the better solution is to find someone to buy it off you and go get another amp. Even Fender offer better for less money.

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Posted: Sat Jun 26, 2010 8:33 am
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nikininja wrote:
Get the amp to a tech and have him lower the bias. The amp is biased way too hot, you can throw all the valves at it you want. All you will do is maybe notice a change for a week or two then as the valves wear the amp will slip back to it's old sub-par performance.

Really the better solution is to find someone to buy it off you and go get another amp. Even Fender offer better for less money.


The Blues Jr is what it is. It's not just the bias that's the problem. it's the whole package IMO. I'd try the Egnater Tweaker. $579 and tons of versatility. It's a great sounding amp.

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Posted: Mon Jun 28, 2010 9:29 am
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Nik, i thought the hot bias is what makes this thing sound all nice-and-juicy like, and not cold and sterile?
or maybe you're saying that its responsible for the strong mids?


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Posted: Mon Jun 28, 2010 9:43 am
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I must be in the minority :lol: I love my BJ just the way she is :wink:


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Posted: Mon Jun 28, 2010 10:32 am
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msvolpe wrote:
Nik, i thought the hot bias is what makes this thing sound all nice-and-juicy like, and not cold and sterile?
or maybe you're saying that its responsible for the strong mids?


It is. I always felt the tone stack was a bit lacking.

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Posted: Mon Jun 28, 2010 11:49 am
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msvolpe wrote:
Nik, i thought the hot bias is what makes this thing sound all nice-and-juicy like, and not cold and sterile?
or maybe you're saying that its responsible for the strong mids?


But it doesn't sound nice and juicy. Nasty and raspy is more in line with my experience of em. The mid control is non existent and the gain is about as smooth as a cat licking sandpaper. Never mind the reverb that I could write a page about.
In my experience as you bias hotter and hotter you diminish the preamps effect on the sound of a amp.


Despite this guys good playing, this sounds weak and thin.
http://www.youtube.com/watch?v=Yg7KRR9FBlc&feature=related

If thats a prominent mid, I'd hate to hear a scooped sound.

Here's better for a lot less out of Fender, never mind looking to any other manufacturer.

http://www.youtube.com/watch?v=0GyvkiYf32s

Much more clarity, versatility and a reverb that actually does something, for half the money. Out of someone that doesn't know how to adjust a amp. (This must be the worst I've heard a vibrochamp sound).

As for me, I'm never buying another amp again ever. No matter who makes it, so I don't really care. More on that towards the end of the week.

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Posted: Mon Jun 28, 2010 11:58 am
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weak and thin is the last thing i would say about the jr.
listening to both videos given, i would say that the DX is the weak sounding one. the reverb need to be a little better on this amp i agree.


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Posted: Mon Jun 28, 2010 12:40 pm
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63supro wrote:
nikininja wrote:
Get the amp to a tech and have him lower the bias. The amp is biased way too hot, you can throw all the valves at it you want. All you will do is maybe notice a change for a week or two then as the valves wear the amp will slip back to it's old sub-par performance.

Really the better solution is to find someone to buy it off you and go get another amp. Even Fender offer better for less money.


The Blues Jr is what it is. It's not just the bias that's the problem. it's the whole package IMO. I'd try the Egnater Tweaker. $579 and tons of versatility. It's a great sounding amp.
I agree the Blues Jr. is one I pass on. Tubes are about Biased 7% hotter then should be the plate can't dissipate the EL84's heat. Add volume the output trans starts to overheat sound gets worst.
Only way to fix it is to add trim pots and bias the tubes one means matched sets two means it don't matter.

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