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Author Topic: BM JM Mod  (Read 44090 times)
Pickmaster
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« Reply #30 on: October 29, 2012, 12:23:53 AM »
Thanks for listening and your kind words, much appreciated.
Put a three way switch on the master volume with an additional 33pf and 68pf caps. This will make an amp brighter if desired. No Dlator needed for that, but if you use effects than you need some kind of buffering device, it can be Dlator or any other.
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StratUltra
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« Reply #31 on: October 29, 2012, 11:05:23 AM »
Thanks Doc!

You've sold me on a FM ME with your mods!
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Thilo278
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« Reply #32 on: October 29, 2012, 03:05:28 PM »
I really can't thank you enough, Ika!

I will mod it together with a friend in about two weeks :-) Just ordered everything mentioned; including the other parts highlighted in that JM Mod. Seems they are not needed... But can't be to bad to change them, too, I guess :-)
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« Reply #33 on: October 29, 2012, 03:50:36 PM »
Quote from: Thilo278 on October 29, 2012, 03:05:28 PM
I really can't thank you enough, Ika!

I will mod it together with a friend in about two weeks :-) Just ordered everything mentioned; including the other parts highlighted in that JM Mod. Seems they are not needed... But can't be to bad to change them, too, I guess :-)

My pleasure Thilo,
As I’ve mentioned experimenting is a great fun. When you guys finish FM mods, you can try couple of additional changes from JM thread if you wish.

Cheers
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captainbackfire
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« Reply #34 on: October 30, 2012, 01:13:04 PM »
I'm also interested with the path you're taking Thilo. Please let us know how great your additional mods do. Thanks again sir Ika. I've done just two of the mods so far and the clean is vastly improved. This is the first time I jammed to a Jm tune and was able to sound better than him. Tonewise.

I pretty much couldn't complain about the tone anymore. If I was to improve something it would be the response. Now, I understand that my two strats here are unfortunately on the bad side of things as it pertains to playability and less significantly, tone. They play so so. If I can change something, I'd like more compression just like the effect of removing the LNFB. A little more of that effect would be appreciated. I hope some of you have suggestions? I've yet to try a naturally touch responsive guitar though. I'm currently unlucky with guitars.
« Last Edit: October 30, 2012, 01:20:30 PM by captainbackfire » Logged
Thilo278
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« Reply #35 on: October 30, 2012, 01:37:46 PM »
Sure thing, I'll let you know Smiley
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Thilo278
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« Reply #36 on: November 18, 2012, 04:44:27 PM »
We did some of the mods now:
- LNFB 3-way switch
- 12- way rotary
- 68pF bright cap
- midboost cap changed
- 68k slope resistor

We left snubber caps, bass pot capacitor and everything else alone for now.
I like the results so far. No negative Feedback does a nice thing to the clean sound with a strat, though it's quite bassy now and less trebly. It's good that we made it switchable, because I like those glassy/trebly cleans sometimes Smiley

What exactly does removing the bass pot cap to the sound?
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captainbackfire
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« Reply #37 on: November 19, 2012, 06:16:08 AM »
I first removed the negative feedback then tested my chassis so I know what it does. I then removed the bass cap and tested the chassis again. The change was very subtle. Maybe If I've done it before the LNFB then I must've noticed more increase in bass. But with what I did, there was just a slight increase in bass. I think you dont need to remove yours. But me, I liked both mods.
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Thilo278
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« Reply #38 on: November 19, 2012, 08:31:07 AM »
Thanks for the answer. Yes, I think I don't need it, too.My amp has enough bass already :-)
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Thilo278
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« Reply #39 on: November 27, 2012, 08:33:11 AM »
Okay, tested it and I still have NO idea what difference the slope did. The lifted NFB adds extremely much bass, cool for tele bridge PU, not so for neck PU. I prefer the 470pf setting. This is a good inbetween sound.
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captainbackfire
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« Reply #40 on: November 27, 2012, 01:28:36 PM »
Which one of your settings / mod / stock config gave the most touch response? Or compression?

Thats interesing on the 470pf. What style do you predominantly play bro?
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Thilo278
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« Reply #41 on: November 27, 2012, 02:08:39 PM »
Whoops, just realised I answered in the wrong thread Smiley Well, you found it anyway...

Don't know exactly what you mean with what gave the most touch response or compression? The LNFB settings? Hard to tell... if I had to say something about that I would say without LNFB ist the most touch responsive. But that could just be imagination due to more bass, mids and little bit more volume?

I play the same style as you, I guess. Inspired by John Mayer, SRV, Robben Ford, etc. (Fingerpicking and bluesy stuff).

I have to add, that I didn't test the amp in band setting yet. But alone in my room with gig volume (Hell, that was loud!) I could imagine the bass player doesn't like all the bass the lifted LNFB gives Smiley The 470pF is a little bit milder, but still an improvement over the stock setting with a singlecoil guitar.

What's interesting is that the Jazz setting got useful for me the very first time with the lifted NFB Grin
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captainbackfire
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« Reply #42 on: November 27, 2012, 02:22:28 PM »
Oh yea? Thats cool I also guessed we play the same style

Was your Jazz setting like mine? It only gets enough bass when you crank the bass knob?

I have used my amp in a rehearsal without the LNFB and the bass cap. In a place where volume is very restricted I might add. And I can tell my bass player likes my tone but he doesn't say it. I guess I know why... lol.

Anyway most of the bass and girth gets LOST with my loud drummer. So maybe there's not to much afterall. But then again, the drummer is oblivious of any volume restriction.
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Thilo278
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« Reply #43 on: November 27, 2012, 08:35:15 PM »
Yup, Jazz setting without cranked bass just sounded like... well, s***. Absolutely unusable. I still like the rock setting better, but now I see it usable.
To the bass: I tested it in a small room with cranked volume, so that could be the reason, why I'm hearing so much bass. Also the amp is standing right on the floor. But with 3 NFB settings, I guess I'll have the right thing for every situation Smiley
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captainbackfire
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« Reply #44 on: November 28, 2012, 03:31:33 PM »
This make me think. How does John Mayer make his sound thick but doesn't clash with the bassist. THough sometimes his live sound is a bit muddy I admit.
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