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FDP Forum / Fender Amps: 1985 - Current / The Vibro-King Club

Previous 20 Messages   Next 20 Messages  
back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
Jul 14th, 2016 01:48 PM   Edit   Profile   Print Topic   Search Topic

Has anyone biased their power tubes with this amp?

Also, what tubes does this amp come with (stock). I am thinking that I have replaced only with medium GT-6L6 GE's so this is what they came with. I just want to be sure. I have been satisfied thus far with them and know that I don't have re bias if I stay with them. I have 2008 black standard version.


RKSTRAT
Contributing Member
**********
**

USA

"Clapton is Good"
Jul 18th, 2016 04:57 PM   Edit   Profile   Print Topic   Search Topic

I had a long V-K bias discussion in the amp repair forum.

May be more than you want to know :-).

link to old thread

back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
Jul 19th, 2016 08:58 AM   Edit   Profile   Print Topic   Search Topic

jeeze! i felt like i was just reading transcripts from congress. thanks' for the link.

division17

Canada (Montreal)

Life's been good to me so far
Sep 4th, 2016 06:34 PM   Edit   Profile   Print Topic   Search Topic

Does the current 20th Anniversary have any PCBs? I'm pretty sure the VKs from the 90s had PCBs.

(This message was last edited by division17 at 10:04 PM, Sep 4th, 2016)

back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
Sep 8th, 2016 02:43 PM   Edit   Profile   Print Topic   Search Topic

The Vibro-King has always been a hardwired amp. I believe all the custom shop/custom amps have been hardwired. crack it open to have a look.



division17

Canada (Montreal)

Life's been good to me so far
Oct 10th, 2016 09:30 AM   Edit   Profile   Print Topic   Search Topic

If you were to use a THD Hot Plate with the VK, would you use the 2 ohm or 2.7 ohm version?

In the manual, the speaker rating is 2.6, but the output is rated as 2 ohms.

Lombo

San Fran

no booze! no blues!
Oct 21st, 2016 03:50 PM   Edit   Profile   Print Topic   Search Topic

I'm interested in division17's question as well. And if anyone uses an attenuator with the 2x12 ext cab.

back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
Oct 22nd, 2016 06:44 PM   Edit   Profile   Print Topic   Search Topic

Some one in this thread discusses the reason for the weird resistance rating due to the 3 speakers in the combo and the extension cabinet or using something other than the 3 tens. if you are unsure, i can verify that it is simple to contact bruce zinky and ask him personally. have you tried just going with the volume trick and adjusting eq's by ear? i was always under the impression that this was one of the charms of the vk- that you can play tricks with the output without having to really crank the volume (or that was what zinky mentioned to me years ago when discussing the attenuators with me).


division17

Canada (Montreal)

Life's been good to me so far
Oct 23rd, 2016 08:26 AM   Edit   Profile   Print Topic   Search Topic

I contacted Fender and they said to use the 2 ohm version. I also contacted THD and they said use the 2.7 ohm attenuator. I guess the difference is so small in terms of ohms that it would not matter (I think, rather than know).

Lombo

San Fran

no booze! no blues!
Oct 24th, 2016 06:19 PM   Edit   Profile   Print Topic   Search Topic

I'm familiar with the volume trick. I guess my question should have been how does that trick effect the power tubes. I do love the volume trick and have been using it for years but I was curious about cranking it with an attenuator. Would there be a difference?


back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
Dec 24th, 2016 12:51 PM   Edit   Profile   Print Topic   Search Topic

Lambo, can't speak specifics of the trick but i would imagine that it would wear down power tubes quicker (i would go through a pair every couple years when doing it regularly).

P.S. - RIP Vibrro-King



back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
Feb 14th, 2017 04:14 PM   Edit   Profile   Print Topic   Search Topic

Reverb died on me today. I am trying to trouble shoot the issue but can't make heads or tails with the issue. I just stopped working, I swapped tubes and checked connections. i get sound other than the reverb but it really just crapped out. Any suggestions?



RKSTRAT
Contributing Member
**********
***

USA

"Clapton is Good"
Feb 23rd, 2017 02:08 PM   Edit   Profile   Print Topic   Search Topic

I know nothing......but my best guess is that it MIGHT be the tank.

Does the amp sit, or are you moving it around for gigs?
If you have another amp with a tank, you can just try to
run the connections to another tank to test that.
I don't think that could harm a smaller tank, or the amp, but double check on that before trying anything. Best to take this question to
the amp repair forum. You have a newer V-K, so it is not the reverb tube issue.


back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
Feb 23rd, 2017 04:12 PM   Edit   Profile   Print Topic   Search Topic

thanks for the concern. i checked the reverb driver and it was fine but the issue ended up being a pre reverb driver tube and one of my pre amp (post reverb tubes). both replaced and amp sounds better than ever. such a tank and a glorious sounding one at that.



RKSTRAT
Contributing Member
**********
***

USA

"Clapton is Good"
Feb 25th, 2017 09:34 AM   Edit   Profile   Print Topic   Search Topic

Good news!

RKSTRAT
Contributing Member
**********
***

USA

"Clapton is Good"
Apr 10th, 2017 08:47 PM   Edit   Profile   Print Topic   Search Topic

Sorry for the dumb question but.......

VK discontinued?

Y or N

I was thinking of selling one of mine...1995..,
I have a buyer. But if discontinued..... ? Maybe not selling.

Max66

GERMANY

May 9th, 2017 05:48 AM   Edit   Profile   Print Topic   Search Topic

Hello, new VK owner here..:-) I have a 2011 black version VK with Jensen P10R speakers.
I looked inside the chassis and what I have noticed at first glance is, that the optocoupler bug for the tremolo is missing.
Instead there are two printed circuit bords with ICs and a lot more small electronic parts.
Do you have information about this? The Tremolo still sounds great by the way - maybe even better then the optotrem. Thank You

back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
May 9th, 2017 12:11 PM   Edit   Profile   Print Topic   Search Topic

there has been lots of issues with the tremolo ticking in this amp. which led to lots of attempts at fixing it. the amp you have might have been replaced with what you described. i think that fender might have a schematic of the amp on their sight. if you have trouble getting ahold of one, let me know i can scan and email you one (if you give me some time). i have a 2008 (roughly the same amp that you have).


Max66

GERMANY

May 10th, 2017 08:43 AM   Edit   Profile   Print Topic   Search Topic

Thank You for the info, Back Breaker. Today I wrote a message to Fender and asked for the latest schematic and technical info.
Another question: has anyone had the chance to compare the Jensen P10R to the Jensen P10R-F? What do you think? I feel my VK has some kind of edgy distortion and not too much headroom.
I am used to my tweed Bassman and Pro amps and the VK seems like an instrument that needs to be learned. Very different .....

back breaker

eureka, usa

Kid! STOP! you're rockin' the forest!
May 10th, 2017 09:33 AM   Edit   Profile   Print Topic   Search Topic

does your amp have p10r's or p10r-f's? the f's were made to sound more broken in. i have p10r's and they sound smooth at this point. is your amp a 20th anniversary amp? they didn't have those on the original run (to my knowledge)- the f's. also, the amp is known for having little to know head room at high volumes. however depending on the guitar it will clean up really well. i use a avri jaguar and it sounds clean as twin for the most part. you might check the biasing on that thing (it is made to be done by ear) there are some directions on how to do that in this thread somewhere or a quick search on the web.


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FDP Forum / Fender Amps: 1985 - Current / The Vibro-King Club




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