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Post by gtrjunior on Dec 26, 2016 19:42:01 GMT -5
Hey guys...I was just playing and twice had an issue with the amp suddenly sounding very muffles like someone threw a blanket over it. After a few seconds it returned to normal.
I remembered reading about someone else here having that issue as well....I just found the thread and read through it.
Basically the issue was a bad standby switch. He had to send it back to Scott for repair and Scott diagnosed the bad switch.
So, I of course checked all the regular culprits....
Cables
Tubes- I just abused fairly recently and besides the amp still sounds good with the exception of the loss of the high end thing. So I really don't think tubes are the problem.
Tomorrow I'll go plug in after work
and fiddle with the standby switch and see if I can make it happen. If I get the problem again, I'll know what the solution is.
Anybody experience this?
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Post by briman on Dec 27, 2016 0:06:48 GMT -5
Hope you figure it out. So frustrating when stuff like that happens..
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Post by gtrjunior on Dec 27, 2016 7:39:02 GMT -5
I've never owned an amp that's so temperamental. Almost to the point where I'm ready to sell it.
Then again it sounds soooo damn good.
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Post by briman on Dec 27, 2016 16:04:43 GMT -5
I can understand your frustration as its not the first problem you've had with a new amp.
I have been fortunate with all my Splawns (4) and never had any issues. Maybe yours got banged around alot during shipping or something???
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Post by gtrjunior on Dec 27, 2016 20:37:07 GMT -5
In all fairness, the other issues were a cold bias and the second was user error. So far there hasn't really been something wrong with the amp. Here's a short video of what it's doing. It happens around 25-30 seconds in. You can hear it fade out and fade back in. vimeo.com/197238443 |
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Post by briman on Dec 27, 2016 22:25:41 GMT -5
I don't know what that could be. How often does it do that and when? Is it soon after you turn on the amp?
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Post by gtrjunior on Dec 28, 2016 5:02:28 GMT -5
The other night it happened within a few minutes of turning on the amp and last night (this vid) happened 5-10 minutes in.
I had taken off the back to check tubes etc. and I noticed that the NOS tubes (preamp) don't fit quite as tightly into the sockets as new production tubes. I'm wondering if the sockets need to be tightened. I read that with the power tubes Scott uses, some people had noticed that other tubes felt loose in comparison.
I sent this video to Scott also, so we will see what he thinks.
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Post by briman on Dec 28, 2016 13:08:35 GMT -5
my guess would be tubes. Expecially since it seems to happen close to start up. Something to do with tubes not full current due to defective tube or bad pin connections as you mentioned. I would put new tubes in and not NOS. Electro Harmonix, Tung Sol and Ruby's all sounded fantastic in my Splawns.
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Post by gtrjunior on Dec 28, 2016 13:31:39 GMT -5
I had a chance this morning to troubleshoot a little more. I actually think that it's my noise gate.
I think one of the output jacks is bad.
I plugged straight into the amp and turned off the loop and didn't seem to have any issues. Then when i engaged the loop it happened. When I tap on the suspected bad jack it's clearly making an audible pop. I'm gonna try another gate and see what happens. This particular gate gave me issues in the past also.
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Post by gtrjunior on Dec 28, 2016 19:59:40 GMT -5
Ok...I think I got it fixed. The noise gate was the issue. I swapped it out with another one and She's roaring again!!
Fingers crossed.....
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Post by briman on Dec 28, 2016 23:02:35 GMT -5
good job!!😆
I noticed tonight that if i plug my cable from my cab into the speaker jack on the left instead the right on the QR, the speakers seem to have less breakup when i am in b+ voltage drop.
I don't think it's my imagination but i am tired..... so i will try again tomorrow.
I have usually had it on the left jack with all my other splawns but for some reason it got put into the right one recently.
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Post by gtrjunior on Dec 29, 2016 4:50:12 GMT -5
good job!!😆 I noticed tonight that if i plug my cable from my cab into the speaker jack on the left instead the right on the QR, the speakers seem to have less breakup when i am in b+ voltage drop. I don't think it's my imagination but i am tired..... so i will try again tomorrow. I have usually had it on the left jack with all my other splawns but for some reason it got put into the right one recently. Im gonna check that out too. Off the top of my head I don't recall which output I usually use. |
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Post by splawndude on Dec 29, 2016 23:39:29 GMT -5
I want to say from memory that Scott told me a long time ago to use the speaker jack closest to the Ohm selection dial - which kind of makes sense. Not sure if that is right or left off of the top of my head. I also doubt it will make to much difference if you use the other one. Interesting that you guys are saying you can hear a difference.
Glad you got your situation sorted gtr
PS: If you were to use the second speaker jack (to run two cabs for example) then you would set your ohm dial at half of what your speaker cabs are. In parallel like this, then 2 - 16 ohm cabs both plugged in means you set your ohm (impedance) at 8 ohms.
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Post by gtrjunior on Dec 30, 2016 6:42:25 GMT -5
Thanks....now that I got the faulty pedal out of the chain. I can actually hear that the amp is so much more "alive" than before....
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Post by gtrjunior on Dec 30, 2016 8:27:54 GMT -5
I just went and experimented with plugging into the 2 different speaker outs...I honestly can't hear much of a difference.
On another note...most people, when using a nose gate(right now I have the Boss NS-2) complain of "tone suck". I just noticed that when my pedal is engaged it gives it more sparkle, which I was surprised to hear. I'm not sure if the Boss has a buffer in the circuit or not but I didn't think it did.
All I know is it sounds better with the pedal than without.
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