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Messages - Psycho Bass Guy

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2101
Bass Amps & Effects / Re: Traynor YBA 200-2
« on: March 12, 2010, 08:57:42 AM »
PBG When you use the word "eating" to me that means going through them a lot.

That's exactly how I meant it, but from what I gather, the "bad" preamp tubes you are pulling are not non-functional; they just don't sound right to you, so you swap them. There's a name for that: the placebo effect- a change is expected, so it is observed. Any time you want to get rid of your "bad" tubes, I'll be happy to take them off your hands and post some test data on just how "bad" they really are.

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I don't get what you are all whipped up about.

...says the person continually arguing that he's not arguing. ;D

Really? You don't get that my professional experience, technical data, and training, not my "opinion," is diametrically opposed to what you're saying, and I keep trying to reconcile the two? This is not a matter of opinion; this is a matter of fact; are spare tubes a good idea? The answer is an unqualified "no."

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I carry spares and have used them.

...which is a different than saying that it is a good idea for someone else to carry them out of necessity, which is bullshit.

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our opinion is that it is not nessesary

No, my experience is that it is not neccessary. Anyone can have an opinion; I speak from a position of technical expertise.

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Fine I really don't care, we disagree no big deal

Your past few posts say otherwise...

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That does not mean I am "full of shit".

I attributed that statement BEFORE you entered this thread and seemed to take such strong offense to my using it. The argument that spare tubes are necessary is baseless in fact, so the people who purport, are in fact, supporting a fallacy, and are "full of shit" when attempting to speak to it from an informed technical perspective.  Just because you disagree doesn't mean I'm going to take it back. I never singled you out prior to your argument, nor was I even aware you felt that way, so please don't try and play some "martyr card" that you're being personally abused. I have nothing against you personally at all other than a little frustration with your apparent stubbornness to refuse to differienate between fact and opinion.

 
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Honestly I think your moderating skills could use a little work.

I have not "moderated" this thread in any fashion, nor have I used my position as moderator to enforce my views. Your posts have not been modified, censored or otherwise altered by me in any way, shape, form, or fashion. This is not an issue of moderation; this is an issue of disagreement. As to your opinion of my "moderating skills," it has been duly noted and given the appropriate weight of action.

2102
Bass Amps & Effects / Re: Traynor YBA 200-2
« on: March 11, 2010, 09:59:51 PM »
When did I say my amps were eating pre amp tubes?

Why else would you be changing them?  ???

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I have half a dozen tube heads, some get more use than others, they bounce around in my van in all kinds of weather.

I've got loads of old tube PA and recording gear, 30+ tube amps, and have been fixing them for almost 20 years, and have NEVER had to change a preamp tube at a gig. They are also stored outside and ride around in the back of my pickup under a camper top. I've had a Mullard 12DW7 split its envelope and go gassy when I was reinstalling it in an SVT after cleaning up the amp on my bench, and other than that, the only changes I've ever had to make with preamp tubes have simply been for different makes or types for a change in tone.  I once lost a power tube to a short when my Trace Elliot VR400 vibrated off my Acme and fell to the ground and it ran for about five minutes more until the current imbalance blew the mains fuse.

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since I run more than one head I may not notice a preamp tube is going in one amp, I'll only discover it at the next sound check and that's when I am happy I have spares.

I reiterate my earlier question: why are you changing preamp tubes if they are functional?

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I keep spares and have had to use them. 30 plus years of experience have taught me that this is a good idea for me, you and anyone else may does as they like.

20 years of experience fixing them says you're wasting your money.

2103
Bass Amps & Effects / Re: Traynor YBA 200-2
« on: March 11, 2010, 12:10:39 PM »
Sorry, but that's not the case, and if your amps are eating preamp tubes, there is something seriously wrong with them. The whole 'lower quality means spares are necessary' line is a bunch of bullshit; current production tubes do not last as long in general as old US and European production, but we're talking a difference of four or five years out of 30 or 40. If they're really poor quality, they die instantly. You're not going to have one just 'up and die' without it giving you plenty of warning. 15-20 years ago, Chinese tubes were a crapshoot. Nowadays, there are more audio tubes being manufactured than there EVER were 'back in the day,' and there are currently produced models that I would rather have instead of vintage.

 I also retiterate what I said previously: If a tube fails, whether it be the fault of the tube or the amp, the damage will happen almost guarantees that you'll either just destroy your new tubes or damage your  amp further. If you drop your amp and it breaks a tube, there will be something else broken inside it 99.9% of the time. Just because their envelopes are glass, doesn't mean they're going to shatter with the least hit. How fragile is your car's windshield?

2104
The Bass Zone / Re: Lady Ga Ga and bass thing
« on: March 10, 2010, 09:49:37 PM »
You guys talk like a bunch of drummers! Her infamous "bulge" was a tampon string. If that's your definition of male genitalia, you're playing the wrong instrument!  ;D

2105
Gibson Basses / Re: The Runaways
« on: March 10, 2010, 08:21:02 PM »
I saw the last 2/3's of Joan Jett's performance last night. She was pretty good, though the mix was just a tad more sedate than I'd like. The bass player was using a Fenderbird through two SVT VR stacks. My band used to cover "Cherry Bomb," which was funny because we were all a bunch of ugly redneck guys with absolutely NO qualities of the song's object.

2106
Bass Amps & Effects / Re: choke filtering
« on: March 10, 2010, 08:11:27 PM »
Yep.

2107
Bass Amps & Effects / Re: Traynor YBA 200-2
« on: March 10, 2010, 05:05:32 PM »
So, I'm told it's a good idea to carry spare tubes, anybody got some suggestions for which brand and place to purchase?

The people who told you that are full of shit. If a tube fails, whether it be the fault of the tube or the amp, the damage will happen almost guarantees that you'll either just destroy your new tubes or damamge your  amp further. Fortunately, tubes and tube amps are far more robust than they are generally given credit for being.

BTW, congrats of the new amp!

2108
Bass Amps & Effects / Re: choke filtering
« on: March 10, 2010, 04:58:53 PM »
looks like Marshalls go really high in values on the chokes they use.

BTW, I meant to comment on this earlier and just forgot: Marshall's were designed with double the mains voltage, which means the potential for line noise is double, so they needed bigger chokes to filter it out.

2109
Bass Amps & Effects / Re: Let's see your rig!
« on: March 10, 2010, 04:53:28 PM »
Styles,
 Are those SVT3 Pro's in "Classic" headcases?

2110
Gibson Basses / Re: Meet my Schlauholz LP ...
« on: March 10, 2010, 11:39:58 AM »
I'm happy to hear it overcame what was crippling pickup/preamp combination for others of its kind and actually sounds good!

2111
Other Bass Brands / Re: Now THIS is neato!
« on: March 09, 2010, 02:57:12 PM »
Time to dredge this up. That's Wish himself playing.  :rolleyes:



My wife just watched this. Her comments: "He needs to be f***ing shot," and "I think I just got stupider watching that."

2112
Bass Amps & Effects / Re: choke filtering
« on: March 09, 2010, 02:06:22 PM »
i'm getting the impression that the higher inductance values for choke filters, measured in Henries, tends to be lower for guitard amps than bass amps and that this one fact alone seems to make a remarkable diff in tone. is this correct and could you elaborate on this a bit PBG? has it got anything to do with the chokes acting like a big cap?

Yes.  Chokes were an attempt to make better use of tube rectifiers, which still put out a fair amount of noise, even post-rectification, due to things like heater-to-cathode leakage and high internal impedance. On "dirty" power sources, a tube rectifier will still dump lots of noise into the audio output via the supply rails. To see this in action, use an amp with a tube rectifier and no choke on generator power, which is typically sawtooth, instead of sine 60 Hz. What the choke "did" was filter out the remaining noise, post rectifiers. Its inductance rating is directly proportional to the amount of current it can pass, and since bass is lower frequency, bass requires more current to modulate its output voltage since the period of the output wave is longer. With the introduction of the s/s rectifier, a choke became moot.

2113
Gibson Basses / Re: Gibson SG/EB3 prototype?
« on: March 09, 2010, 09:04:10 AM »

2114
That's right in the price range for anything comparable I found for a whole set new. IIRC, the Rio Grande Pitbulls are $268 EACH! ...not a lot of Gibson love in the aftermarket world.

2115
Other Bass Brands / Re: Now THIS is neato!
« on: March 09, 2010, 08:27:11 AM »
looks like someone ripped off a wish bass design but made it a whole lot better.

The neck and knobs still look bad. The neck definitely has a short-scale thing going on, and Ampeg scroll basses are famous for being larger than standard. I also think I've seen those bodies for cheap online. Wish's crap is all neck-through from what I've seen so maybe this is a first attempt by someone trying to one-up him.

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