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Ampeg SVT 7 Pro Club

#2,361
And just to be clear, they did say it would be way way down the list of possibilities that the XLR itself was messed up if the signal to the cabinet was good. Also, they said if that didn't work, to send it in and they'd figure it out and fix it. They were very helpful in my opinion and were right the first time.
 
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#2,362
Treblefree said:
Well, they were right. Crock or not. I bought a new XLR and replaced the one I used every week for more than a year from my head to the snake and no more issue. Perfect again; just like they said it would be. I believe them and if I have this problem again, I fully expect it to be the cable or something upstream of that side again.
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I didn’t say they were wrong. I said “he”, not they, were wrong to tell you that there’s no way it couldn’t be the amp. There was a difference.

Carry on as you see fit….
 
#2,363
Geri O said:
I didn’t say they were wrong. I said “he”, not they, were wrong to tell you that there’s no way it couldn’t be the amp. There was a difference.

Carry on as you see fit….
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Not trying to argue here or anything or be ugly. I did post again that this was way way down the list of possibilities is what they told me to be clear, but they made it sound extremely unlikely that DI out could possibly be bad if you get good speaker out.

I'm just on here wanting to pass on some troubleshooting experience I had that I was impressed with in case it helps others here. I was stressed out when this happened because I've read the horror stories about this head and as I'm sure many others have as well. The rep was exactly right in what they told me to do and I wanted to pass it along to keep others from freaking out like I did.

And also to be clear, I've had this head for several years now and have not had one single problem with it with lots of use.
 
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#2,365
Geri O said:
Sorry, but having dealt with dozens of bass rigs in my PA life, that’s a crock. It’s not very common, but problems with a line out of an amp can be a factor on its own. I don’t believe that’s Ampeg’s official position, but the position of a tech that simply has it wrong.
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But if it's the same path as the speaker output, I don't know how that can be unless there's a loose wire on the XLR out, no?
 
#2,366
Where do you get the idea the di is the same path as the speaker output?
Could be a problem with the IC driving the XLR. Could be a problem with a connector on the preamp board or output board (2). There are lots of possibilities.
 
#2,367
JimmyM said:
But if it's the same path as the speaker output, I don't know how that can be unless there's a loose wire on the XLR out, no?
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Hiya, Jimmy.

Yes, or other damage or component failure. That’s all. We used to have to extra-careful to make sure the phantom power was deactivated when a bassist preferred his line-out to our phantom-powered DI. That’s hardly a thing anymore.

In retrospect, I should have left that one alone. I still feel the same about the service individual, but hey, I didn’t win any brownie points by chiming in.

Hope you and yours are well….
 
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#2,368
Geri O said:
Hiya, Jimmy.

Yes, or other damage or component failure. That’s all. We used to have to extra-careful to make sure the phantom power was deactivated when a bassist preferred his line-out to our phantom-powered DI. That’s hardly a thing anymore.

In retrospect, I should have left that one alone. I still feel the same about the service individual, but hey, I didn’t win any brownie points by chiming in.

Hope you and yours are well….
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Eh, it's not a contest, Geri O...you'll still be a working pro at the end of the day :D

Hope you and yours are well, too, bro!
 
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#2,370
baxter_x said:
It's totally DIYable. Swapping the ICE2A265 chip is very easy and cheap. You will find many tutorials on the internet and probably here on TB. The chip is the key for rea
It also depends in you skills ;)
But it's pretty much removing a chip and placing another one.
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Update after reading this great post by @baxter_x - totally doable! I am a hack solderer at best (wiring basses, have built out a couple of UncleFluffy Stingray pres), and was able to wrestle the old chip loose and install the new one. Fired it up for the first time at practice last night and it sang. Under $3 for the part (before shipping...)

On a related note - anyone want to buy the brand new Rev H board I got from Full Compass, just in case I screwed this up? One corner was damaged in shipping, but nowhere near any traces...
 
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#2,373
had something interesting happen the other day - the guitarist's amp and my 7 pro was on the same electrical lead - he unplugged and I notice my amp had gone dead - I eventually cycled the power to it and it came back fine.
It seems these amps are sensitive to power spikes/noise - it would be wise to use with a power-board that has power conditioners built in.
 
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#2,375
Just bought my second 7 Pro for the studio after my PF 500 went to fault mode. My 1st 7 pro was my practice amp at home. This was gigged for about 8 years with out a hick up. Week after I got the new 7 Pro the old one started to turn on and off by itself.
Dropped the PF 500 and 7 Pro off for repair.
500 is fixed and it didn’t need a board! 7 Pro had the shop scratching their head. They had to call Yamaha which recommended a new board. Will know more next week. They said something about it being a perfect 100 hrz but there is no out put and it shuts off. It had out put before I bought it in and then shut on and off. Now there is no output.
 
#2,378
I have compared my SVT7 against two different SVT2. The first one probably needed to be serviced as it's tone was lacking clarity and dynamic. The second one was sounding way better.
But I couldn’t hear any difference between my 7 and both the 2's. To me it sounded exactly the same. Maybe I should try it onstage to really notice the difference, but I can't justify acquiring an all tube amp for the moment. Which is fine for me considering the weight ;)
 
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#2,379
The 7-pro and 2-pro are exactly the two amps I'm rolling out to shows with currently. You're right, there's not a world of difference between the two at their basic settings, but the 2-pro is definitely the sweeter sounding of the two amps to my ears. I think that speaks of just how well Ampeg did well with the tone of the 7-pro as it is a very tubey-sounding amp to me, and my favorite class D amp I've played.

Now, start playing with the Drive, as well as the Gain and Master, on the 2-pro and you can get drastically different tones from the 7-pro, especially if you'd like to get into gritty territory.

IMG_0476.jpeg
 
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#2,380
Beautiful picture! I only play clean, so that's probably the main reason why I don't notice much difference between the two.
I guess you don't move around your rack yourself? The weight must be pretty insane. BTW, your SVT2 looks like new!
What do you use your SVT7 for? As backup?

KaseOfBass said:
but the 2-pro is definitely the sweeter sounding of the two amps to my ears
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Could you tell us more about this particular point? How is it sweeter?
 

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