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Old 03-26-2015, 07:23 PM   #941
TheStig1214
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Quote:
Originally Posted by 311ZOSOVHJH
I know you were trying to give a simplified answer but a 6505 definitely sounds better cranked up and doesn't sound that good to me at lower volumes. But your point is well taken. Also, I don't think you can arbitrarily pull 2 tubes on all 100 watt amps. It depends.


Most amps with a push pull config you can pull two tubes, as long as it isn't both left or both right. So one from each "set" of tubes. Then you just have to double the ohms out on the amp.

http://www.premierguitar.com/articl...to-reduce-power

And agreed the 6505 sounds better loud, but that's just the way speakers and the human ear work.
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Old 03-26-2015, 07:26 PM   #942
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It's all about the heater circuit, Stig. If they are wired in parallel you can, if in series, you can't.
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Old 03-26-2015, 07:38 PM   #943
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Quote:
Originally Posted by Cathbard
Pretty much, yeah.

I just ordered JCM 2000 DSL100 looking to play mostly 80s rock. Should I have gone for a smaller amp?
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Old 03-26-2015, 07:44 PM   #944
311ZOSOVHJH
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^ Great choice. You'll be fine.




Quote:
Originally Posted by TheStig1214
Most amps with a push pull config you can pull two tubes, as long as it isn't both left or both right. So one from each "set" of tubes. Then you just have to double the ohms out on the amp.

http://www.premierguitar.com/articl...to-reduce-power

And agreed the 6505 sounds better loud, but that's just the way speakers and the human ear work.

Well.

OK.

Wasn't really trying to call you out or anything

I was just pointing out that you may want to be careful with what you suggest as a beginner or intermediate player could get confused or worse - bad advice.

For one, you mentioned the 6505 is ALL preamp and sounds the same no matter what the volume. Not true.

Just because an amp has 4 tubes doesn't mean you can just pull two and not worry about it. That's all I was saying. The better piece of advice would be to say that you 'may' be able to do it, and to consult with the manufacturer (see below). Even amps with half power switches (like mine) have guidelines. Consult with the builder.

Actually some amps are set up to pull 1&2 and 3&4 or 1&3 and 2&4. Again, consult with the builder. Some amps with tube monitoring capability probably wouldn't like any of this. It is also often recommended to rebias a non-adjustable fixed bias amp when pulling tubes (see my Blog in my profile).
http://profile.ultimate-guitar.com/...HJH/blog/80083/

Additionally, you don't 'double the ohms' out of the amp. You actually halve them. So a 100 watt amp running at 16 ohms will want to see an 8 ohm load if you pull two tubes and run at 50 watts.

I have no comment on your speakers and human ears comment.

Lastly, have a good day.



Here, right out of the link you pasted:

"This tube-removal technique works best in amps that are fixed biased, as opposed to cathode biased. Also, some amps have their output tubes physically arranged in asymmetrical patterns, so consult with the amp manufacturer if possible before removing any tubes. As far as the amp’s reliability, other than the aspects we already addressed, if you occasionally use the amp with all tubes and occasionally with two, consider alternating the tubes you pull so they all wear evenly."



v.....Nah, that's OK. I'd rather check first. That's the advice I've been given and that's what I stick by.
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Old 03-26-2015, 07:44 PM   #945
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Nah, man. Just pull two power tubes out.
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Old 03-26-2015, 07:45 PM   #946
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Originally Posted by Cathbard
Nah, man. Just pull two power tubes out.

Phew thanks!
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Old 03-27-2015, 09:01 AM   #947
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Anyone got any ideas where I can buy male to male 9V DC 2.1mm cables from that aren't priced over the moon? They need to be about 1m long each and I need roughly 10.

Cheers
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Old 03-27-2015, 05:09 PM   #948
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Quote:
Originally Posted by baysoiii
Anyone got any ideas where I can buy male to male 9V DC 2.1mm cables from that aren't priced over the moon? They need to be about 1m long each and I need roughly 10.

Cheers


I would look into a 1spot. It has one plug and a daisy chain for 8 jacks.
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Old 03-27-2015, 05:14 PM   #949
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1spot is awesome.
Comes with a strait up 9 volt adapter too.
Seems pretty noise free as well.



v....Ah. Never tried with less than full
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Last edited by 311ZOSOVHJH : 03-27-2015 at 07:17 PM.
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Old 03-27-2015, 05:37 PM   #950
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^Yeah. I've only experienced a bit of noise when I do not use all the ports I had open.
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Old 03-28-2015, 06:31 AM   #951
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^ Yeah that means you need more pedals
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Old 03-28-2015, 10:05 AM   #952
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^ Yeah that means you need more pedals
Exactly why I bought 4 more pedals for my 5-plug chain : D
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Old 03-28-2015, 11:23 AM   #953
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We had a guy in the band admit that he liked Nickelback. We immediately started looking for his replacement.


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Old 03-28-2015, 01:17 PM   #954
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Don't forget, it is 100% legal to own more than one 1Spot or other power supply- you can even mix & match!- so you can our EVEN MORE pedals!

SCIENCE!
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Old 03-28-2015, 01:52 PM   #955
Will Lane
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BTW, what should I do with my VK's stock speaker? It's just sitting in a box atm...
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Old 03-28-2015, 02:10 PM   #956
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So guys, curious about something, so after retubing my Marshall it sounds so much better, especially with a boost, question one. Why? What do tubes do that change the sonic characteristics of an amp, I thought that only a power tube swap would change the levels of volume and not anything else, but it seems to have done more. Do certain brands of tubes have characteristics that I'm not really aware of yet?

Anyone know if the CM2 is easily moddable? I'm finding the LED a bit bright.
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Old 03-28-2015, 02:24 PM   #957
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Quote:
Originally Posted by Fisheth24
So guys, curious about something, so after retubing my Marshall it sounds so much better, especially with a boost, question one. Why? What do tubes do that change the sonic characteristics of an amp, I thought that only a power tube swap would change the levels of volume and not anything else, but it seems to have done more. Do certain brands of tubes have characteristics that I'm not really aware of yet?

Anyone know if the CM2 is easily moddable? I'm finding the LED a bit bright.
If your ~old tubes were old they could be cutting some niceness out I presume. And from what I've read (particularly on UG) different tubes do have some defining characteristics. http://www.ultimate-guitar.com/foru...ad.php?t=473149

For the LED, you could just color over it with a marker the same color of the LED, blocking some of the light but not changing the color. Although I'm not sure if the LED heat would melt the marker ink...
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Last edited by Will Lane : 03-28-2015 at 02:28 PM.
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Old 03-28-2015, 03:04 PM   #958
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Quote:
Originally Posted by Will Lane
BTW, what should I do with my VK's stock speaker? It's just sitting in a box atm...


if you have room to hang onto it, hang onto it. if you ever sell it you can put it back in, which might get you as much (if not more) money as with the upgraded speaker, plus that means you can save the speaker upgrade for the next amp (or sell it separately if it doesn't suit the new amp).
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Old 03-28-2015, 08:05 PM   #959
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Quote:
Originally Posted by Dave_Mc
if you have room to hang onto it, hang onto it. if you ever sell it you can put it back in, which might get you as much (if not more) money as with the upgraded speaker, plus that means you can save the speaker upgrade for the next amp (or sell it separately if it doesn't suit the new amp).


+1 i keep everything that is replaced and put it back to stock to sell it.
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Quote:
Originally Posted by Cathbard
See what I mean by, "they demonised it"? Tim's attitude is typical of what they did to everybody. The media drove that sort of Disney shit into everybody's brain. Only old farts like me missed it in our formative years.
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