I hope this thread isn't that old, so anybody would read my post. Upload or insert images from URL.
Your previous content has been restored. I haven't even cracked the chassis since I have been so happy with it. I have run into that some before when I use my socket reader. Engl Special Edition Type E670 4-Channel 100-Watt Guitar Amp Head.
Personally I am pretty happy with the sound. × ENGL Z-4): Connect it to the amp via a stereo ¼" cord. Also though, it has been a little over a year with pretty heavy playing and gigging. That's the entire range. Engl Powerball vs Fireball Discussion in 'Gear & Equipment' started by sevenstringgod, Nov 24, 2009.
im an electronics repair technician but i really only deal with digital so anyopne with some expertise have an opinion.
Or wait and see who else responds.
Compare Compare Now site51500000000305401 1500000323976. This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. I haven't changed mine yet in my Powerball. Powerball's and SE are designed to run cold. If you want to reach 50-75% you have buy tubes that will reach that between 25-32 ma's. When I had my powerball I adjusted the bias up, using ruby tubes 6l6GC's I was up around 40ma, 43 I think to be exact. well if you look at the schematic its a 25k pot in series with a 22 k resistor so the lowest the value can get is 22k so i added a 20 k resitor in parallel with the 22 k resistor which allows more current to be applied but as a fail saif if the resistor ever blew the bias would return to normal and become colder which is why theresalways a resistor in series with a pot in case of a short i love it to be honest i think the pwoerball now sounds a lot bigger and really huge the clean channel now sounds so much better (biasing hotter always affects cleans more noticeably) do i dare say better then a cobra yeah its that good now i run the amp pretty open so i trun the gain to around 9-10 oclock and it has this tocuh sensitivity and grind to it very raw and organic anyone who needs help doing this i can take pics and guide you step by step as you dont actually have to do more than take off the shell since the board has its traces exposed on the underside.
it's more flexible, as it has more channels with different voicings, as well as many other interesting features.
Display as a link instead, × He's on here. Did you ask ENGL for those? My tech told me it was a very limited range. Engl Screamer 50 Type E330 4-Channel 50-Watt 1x12" Guitar Combo. × Open quick view dialog for Engl E633 Fireball 25 25W Tube Guitar Amp Head { "inCheckoutPromo":[] } Engl E633 Fireball 25 25W Tube Guitar Amp Head.
In, fact, in my manual it says that the tubes should all read something in the 20's (from Engl).
chris, I'm not a technician but I ran into a similar problem with my Powerball. Engl's bias adjustment is, I believe, 25-32 ma's or so. Yeah... you are right... Now that I think about it, it was showing double the mA last time I had an amp that did that. The rhythm tones are chunky and the leads are fat and juicy, which you wouldn't expect from an amp this small.
In this video ENGL endorser Jen Majura is showing you the sounds of the ENGL Powerball 2 with a down tuned guitar in drop C sharp. I want to drive my Powerball with EL34 or 6550. Powerball II E645II 3 available from $1,599.
True bypass and completely analog, the pedal’s specially selected components offer up a particularly high level of sound quality.
Were these non-stock tubes? and on the schematic theyre all tied into the same bias point even on an amp with 4 power tubes that split the bias into two pots it wouldnt read half it reads the current draw of that tube and as long as all tubes are individually drawing the proper bais current i dont get how you would ever be measuring half of the current draw. 3. its not really a tech problem or really a problem at all its more of an engineering requirement i mean the tubes bias supply is correct the plate volts are correct the control screen is correct and the grid as well as the current screen are good im just wondering if there is a design issue with this. Check out Doug's Tubes. It sounded much more organic, the mid-range was enchanced and channel 3 and 4 had a new organic character.
That is interesting that you were getting such a low reading. But anyway, 70% is the usual "hot" setting. Were they JJ's which tend to want to be biased cold? He picked out some 5881's for my Powerball and when I had them put in the tech said they were running at 70% and withing the bias range of the Powerball. Pasted as rich text.
Clear editor. It's 20 all-tube watts and designed to fulfill the needs of a variety of players.
... the powerball is more refined and polished, and less raw. I really liked the powerball after I biased it hotter. To be honest, most amps I get I tweak out with minor mods and tube changes. So you have to be careful.
the plates arent glowing at all and now you got me thinking it says between 28-34 ma on each tube on the service schematic so if this was the case theyd be talking about 68 ma under the 2 tube scenario which would be 101 % and i dont think any amp manufacturer would ever tell you to do that . 3 available from $1,975. I'm an Electrical Engineer but I still lack the practical skills since I'm still a recent graduate. Paste as plain text instead, × I think of Bias-settings and the transformators, but don't know any details.... You can post now and register later. chrisboles226, June 22, 2006 in Amps, HI i recently aqcuired an engl powerball and was only able to bias it up to 27 ma (420 plate volts) which is about 25 % so i put an extra resistor in parallel with the one in the bias supply and can get the bias to read whatever i wasnt i baised it up at 45 ma which is 65% but the recomended max is around 50% any suggestions and am i hurting my amp?
By And you might have to double the readings you are getting.
1. The ENGL Ironball E606 amp head is a tough amp with some mind-blowing attitude. I'd like to bias the amp hotter but I'm not sure if I want to bias it as hot as you did. Worst case, you shorten your tube life some.
Effects Pedal for Electric Guitar Reproduction of the Lead 2 channel of the Engl Powerball II in pedal format, Additional DC socket for power distribution, Controls: … Engl Powerball II Type E645/2 4-Channel 100-Watt Guitar Amp Head.
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If you want to reach 50-75% you have buy tubes that will reach that between 25 … take it to someone who professionally biases amps. My tech told me it was a very limited range. Victor Smolski Ltd. E646. It is interesting the bias was that low though. Does anybody of you knows if this works? You will need one two-way footswitch for switching channels via Jack 36 and another footswitch for switching Master A/B and Style via Jack 35. yep they were jj's i talked to an engineer at my work and although hes not an audio guy looking at the schematic the onyl way i would read double is if i weas taking a measurement somewher after the 2 tubes were paralled and thats the only way that can happen since im using a probe it is impossible to be measuring two tubes at once the bias they recomend is 50% idle which will get to about 80% cooking which is why their bias range only allows for going so hi so that you cant overbias plus the fact that my plate voltage is 420 and not the normal 470 so i believe in fact thats the only reason i had to modify it which is almost exactly the same thing as getting a hotter set of tubes to pull more curent. Engl's bias adjustment is, I believe, 25-32 ma's or so. Yeah unfortunately I don't have the schematics. That's the entire range.
Please, first read this manual carefully! © 1995-2019 Harmony Central, Inc. All rights reserved. Marty Friedman “INFERNO” Signature E766.
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It sounds really great! Just out of curiosity... what value was the resistor you put in parallel? So time for new tubes... A step by step guide with pictures would be greatly appreciated. Top Seller. Your link has been automatically embedded. sorry guys i just traded my powerball for a vht ultralead today im so happy i traded my framus cobra for the engl(and got 200 on top of the deal)and traded the engl for the vht(and got 100 on the deal ) i went to school for engineering but im a tech so i feel yah basiacally look at the schematics and find the bias pot the schematics are available at engampsusa.com just go to the product and its right there on the main page.. in the amp locate the bias pot and you will be able to find the ground trace and the signal trace take an ohmeter from each leg of the ot and measure across the nearest component you will find the 22k resistor in no time and just solder to the existing leads a 20 k resistor and presto expanded bias range! You might want to E-mail ENGL as well.
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The Powerball pedal is tonally based on the Lead2 channel of the Engl Powerball II, recreating the gain stages of the amp itself.
© 1995-2019 Harmony Central, Inc. All rights reserved. They have to be specially selected for your amp by someone who knows what you want. It shouldn't really need a MOD in order to bias it up right.
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