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Post by splawndude on Jan 10, 2017 18:45:33 GMT -5
There is a thread over at Rig-Talk on 'Rare Bogner Porn' or something like that and I happened to notice the back of one of Reinhold's amps and it had 2 speaker jacks next to the Ohm selector and the jack closest to Ohm selector said - "use first".
Makes sense right?
Still should be no discernible difference in tone so it is an interesting situation nonetheless.
Hope you guys are all doing good.
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Post by briman on Jan 10, 2017 19:02:09 GMT -5
I am very busy at work lately and am too tired to play most nights when I get home. Things should be slowing down soon and will play more. I played last night for about 30 mins and gave up and went to bed. I still have it plugged in to the one further from ohm dial. I gave up on trying the two back and forth. Most days, my ears tell me this one sounds better and some days i can't really tell so ....i leave on left one.
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Post by gtrjunior on Jan 10, 2017 19:14:02 GMT -5
There is a thread over at Rig-Talk on 'Rare Bogner Porn' or something like that and I happened to notice the back of one of Reinhold's amps and it had 2 speaker jacks next to the Ohm selector and the jack closest to Ohm selector said - "use first". Makes sense right? Still should be no discernible difference in tone so it is an interesting situation nonetheless. Hope you guys are all doing good. Hmmmm....interesting. I'll plug into the closet one from now on.
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Post by splawndude on Jan 10, 2017 21:31:23 GMT -5
THIS IS NOT THE FINAL ANSWER AND I AM NOT AN EE (Disclaimer) OK. I'm not very technical and probably shouldn't even attempt to try to explain this. I am also much better with pictures and visuals and could not explain any of this if my life depended on it. What I will try to do is shed some light as to why 'I think' this is important. It may not really matter, but Scott told me to use the closest jack and I see Reinhold suggests the same so I have to believe there is a reason for it. Remember, how earlier I was trying to explain how the amp (output transformer or OT) wants to try to keep in balance with its load (or speaker load)? The load is the resistance the speakers are 'pushing' against the amp (OT). I found some pictures that somewhat give you an idea as to how this works or why this is important. Again, I can't really explain it technically - I have very little electronics background. Just enough to be dangerous LOL. If anyone reads this and wants to jump in to correct or expound please do. The second speaker jack is there in the event you want to add a second speaker cabinet. Keep in mind, the other way to do this is to daisy chain a second cab off of the first cab if the first cab has jack designated for that purpose. The result is the same. You need to cut in half your impedence (ohms). So the impedance (ohm) selector is not just simple dial with numbers assigned. It is telling the amp how many windings in the transformer the amp should expect. What load should it expect. Now, what I honestly don't know is what happens physically if you plugged into the second speaker jack and left it that way forever. Is it putting a strain on the OT? Don't know. Is it putting strain on the power tubes? Don't know. If you plug 2 - 16 ohm 4x12 cabs into the back of your amp, you would drop the impedance to 8. So is the amp thinking that if you plug 1 - 16 ohm 4x12 cab in the second jack that it is also expecting now an 8 ohm load as well even though that is not what you are doing? Does that make sense? That is about as far as my brain can take this. Here are some pics I found that help demonstrate this a bit. Super simple block diagram that shows basic windings or at least visually showing they are seperated Now this one takes that and expands on it a little bit. Another often used diagram I see a lot. Doesn't say much but it has impact This one is good. Notice the B+ in there Another good one On this last one - you can see (or maybe not) that on the chart on the right the impedance (in ohms) changes as the 'taps' to different windings or connections to winding within the OT changes.
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Post by briman on Jan 10, 2017 21:44:44 GMT -5
lol that's all chinese to me right now.....too tired to wrap my brain around that stuff. But for sure I will plug into the closest jack to the ohm switch to be safe! I am going to change my speakers. I think the EVH greenbacks are too loose for this new QR. I suspect the new QR'S voicings are suitable to tighter speakers. My QR upstairs with the creambacks sounds better and tighter with big bottom.
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Post by gtrjunior on Jan 11, 2017 4:58:40 GMT -5
Good info, Splawndude. I'll be using the closer jack from now on as well.
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