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  1. Hi My first Line 6 amp was a Spider Valve 112 (original version) and sometime ago the it pretty much died and I benched tested it and ruled IN the smaller PCB (the one controlling the LCD, Volume, Input, etc. It is connected via a ribbon cable to the longer board behind all the channel FX controls. Does anyone have a 112 they want to sell for parts (if that board is okay) or a resource for a new one ?? fullcompass online has parts, however, not anything like this. Yes I have searched eBay and other sites. Please contact me at: n944la ‘at’ gmail ‘dot’ com if you have any resources or are selling one. It it would be the left most board in the pic below...w/ the LCD display A15: UI RIGHT - 35-00-0247-1 REV A 7-JUNE-2007 Thank You Tim Dickerson ARS N9NU
  2. Hi all, I have a pod hd 500 and i'd like to aquire a 1X12 and a valve amplifier ! nothing expensive and low power for home use ! I was thinging in a Orange Tiny Terror... is it good to work with a pod hd 500 ? thanks any suggestion
  3. Hi guys, I'm currently running my Helix in 4CM with my Victory Sheriff 22, and getting great tones! I'm now looking to add a Suhr Reactive Load into the mix! The plan is: Guitar -> Helix Guitar in Helix Send 1 -> Sheriff Input Sheriff Send -> Helix Return 1 Helix 1/4 Out -> Sheriff Return Sheriff 8ohm Speaker Out -> Suhr Reactive Load -> Helix Return 2 (set to Line level) -> USB Out to Macbook Path 1, would contain my tone related blocks (effects etc), input set to guitar in, and output set to 1/4 Out. Path 2, would contain a Cab/IR, input set to Return 2, and output set to USB. My question is, should this work? Am I at risk of damaging anything in this way? It would be the ideal home recording solution for me. Any help would be massively appreciated! :) Cheers guys!
  4. I've had my Helix LT for a few days now and am loving it. Ive tried it connected in all kinds of ways but the best sounding by far is using the Helix LT's amps and then going straight into the effects return of my Peavey ValveKing II 50-watt open-back combo. The sound just comes to life, especially when I use a pre-amp like the Fender Deluxe. So this opens up the question, can any FRFR speakers come close to that open-back sound? Should I keep the Peavey or will something else work? This is maddening - too many options HA HA!
  5. Howdy all, _Apologies moderators if this is in the wrong forum.. figured it might get a few more hits if it’s in the main forum_.. Having been part of the Fractal Forum (however no longer because I’m a loud and proud HELIX user J), and Kemper Forum, and now the Line 6 Helix forum, I’ve noticed that in particular here in the Helix forum, there’s a huge amount of FRFR discussions, but there’s minimal discussions about players that don’t necessarily use FRFR. This could quite easily be because the bigger majority of players in this Line 6 forum ARE mainly FRFR users/players. This isn’t an anti-FRFR topic or discussion, it’s more about expanding on this forum and perhaps growing the capabilities of the Helix and sharing wins/strategies/tones etc etc. On the Fractal and Kemper forums, there are many discussions about FRFR, but there’s also a lot of discussions and banter about power amps + cabs + Kemper or Axe FX, _not just FRFR_. Is it worth having a forum or chat room for the players that mainly use their Helix rig in a non-FRFR situation? It’s all well and good to download and trade patches with one another that are FRFR; however from what I can ascertain on this forum, at least 90% of all things discussed is FRFR based, with not a lot of input on power amp + cab + Helix and so forth. Again, having owned and played all 3 modellers, I personally keep resorting back to a valve power amp + cab + Helix because that not only works for me, but the band that I play in as well. FRFR is the perfect bedroom solution (which a majority of us forum’ites are, presumably), however, I just think it’d be good to have a place to chat, trade ideas etc that are not always FRFR based.. Food for thought I guess..
  6. Hey guys, I know I know, lots of players are really digging FRFR/cabs sims etc, but for my purposes, I'm really digging using amp sims IN CONJUNCTION with my VHT 2/50/2 power amp. Just curious to know if there's other players out there, as the title suggests, that use their Helix with a valve (or even solid state) power amp, AND IF SO, are you using it in a band? Last question, as far as hi-gain tones are concerned, what amp sims do some of you use for this? Thanks.
  7. Hey guys I have a Line 6 Spider Valve HD100 that I was trying to determine a manufacture date on. Serial is (21)SVH1S5834001564 Any help would be appreciated. Thank you! John
  8. Hi everyone.. I had a Line 6 Spider Valve 212, and when i plug in FBV2 footswitch its delay when i want to switch betwen chanels, and after that it changes randomly... I tried FBV2 on other Line 6 amp and it worked correct... Please help if you now something becouse i have some gig for about 10 days so i realy need help... Thanks...
  9. I've been having some trouble with a new MKI. When I use the amp i'ts super loud. Even when the master and channel volume all the way down. This makes the metal and insane settings useless, as they will blast your ears out. I'm running it through a 4 ohm speaker on which I also use with a 180W all tube amp. The 180W is dead silent with master down. After i play a while (sometimes within a minute and other times I can play an hour without a problem) on the MKI the volume drops and I loose almost all of the gain (even on insane). What could be the problem?
  10. Hello, I think soon buy this pedal , but to be sure to make the right purchase , I would like to know .... the pedal is it compatible with my amp Spider Valve MkII HD100 and how I could best connect the 100FX ? Thank you for your answers Daan.
  11. I've been using my Spider Valve MkII HD100 head for four and a half years at rehearsals and live on stage, usually running it through a 4x12" Marshall speaker. After weeks of tweaking I finally got "my" sound out of it, and the fact is I got it to sound really, really great. Through these years it was the most reliable tool, never letting me down even once in all this time. The other day I turned the amp on to rehearse and there wasn't any sound through the speaker outputs. Some days earlier it worked just fine and no one had touched it. The digital part of it worked perfectly, it works as a POD through the line output this is. Off course I've tried with various cables and speaker cabinets and also other amp heads with the cabinets. I did a factory reset, checked the two fuses on the back, but didn't solve the problem. Does anyone know what it could be? Has any had the same problem with these amps? Peace. / PM
  12. Hello POD HD experts . I have a question that I hope can be answered by your infinite wisdom! A friend of mine is selling a valve amp head and cabinet that goes with it. For the purpose of his discussion the amp is the Fame T64 Rs which is valve powered . I was thinking of getting it since he's selling it for very cheap and the and the amp itself is in mint condition. This amp has an fx loop so I was thinking of using this amp for the power and "essence" of the tubes and using the awesome amps of the pod HD. I have seen some videos of the 4 cable method but my question is as follows: can I get the warmth and the power of the tubes and use the amps of the pod hd? And if so , how do I accomplish it? Thanks in advance for all your replies
  13. Hi all, Recently acquired this amp and had a bit of an issue with the rotary function of the preset knob being a bit temperamental. Now it's chosen to stop working all together. However, the push to edit function of the knob still works. Any suggestions? Alex
  14. Hello Friends. I'm using my POD HD500 connected to a stereo power amp (clone of the power of a Randall Century 200), with a 4 x 12 cabs with Celestion speakers seventy/80. This stereo power amp "Colours" signal much as it produces a very sharp and scoop sound. What power amp do you recommend to use with POD HD500? Valves or solid state?? What brands and models? I'm a guitarist in a band of modern metal. Thank you very much from now. Pdt. Excuse my English
  15. my gear: Spidervalve HD100 MK2 FBV longbard (formerly FBX) Windows 7 Ultimate SP1 64 bit desktop Intel Core i5 CPU M-Audio 1x1 MidiSport M-Audio DELTA Audiophile 2496 tried to install the SPIDER FX INFUSION v2.0 getting the error in object, first through 1x1 Midisport then through Delta 2496; once again even via my 32 bit Windows XP laptop. nothing came out in any case... any news? could anybody help? thanx.
  16. Hi. I always wanted to add some new effects to my loved spider valve, especially the octoverb and particle reverb, so, I buy a Line6 M5 and I want to show you how I use both together. Guitar -> Spider Valve -> preamp out -> M5 in -> M5 out -> power amp in MIDI = Spider valve midi out/thru -> M5 midi in. http://www.youtube.com/watch?v=i7RfXpNYWew Sorry my english, is not my native lenguage. Bye
  17. DT50 212 --- amp went out on me after about 2 months, a quick gurgle as tubes burned out ... then nothing. Thusly, I looked at the tubes ... the EL's were glowing bright, 12AX7's were out. Went to Guitar Ctr and after being assured they'd work, I got the Groove Tube russian brand. I would avoid chinese brands also. Russian just seems better sounding to me. Easy to replace and took about 1 minute of careful pressure to install. Unplug too ... duh?! LOL. I immediately noticed that the factory 'hiss' was nearly gone (like 90%), and the sound was more colorful. I looked online and noticed the EH stock brand was much cheaper than the GT brand. As well, each topology was more defined. 3 and 4 are now my fav's. Wonder how the sound will be if I replace the EL's with a high quality brand? Bribrew
  18. Hey guys! New to the forums. I have one simple question. I just ordered a new set of knobs for the spider valve and noticed that the knobs braking are quite common. My problem is that i can't seem to get the old broken knob to come off. Anyone else out there with this problem? Any help is much appreciated Thank you, Nick
  19. Update Instructions: All Spider Valve Mk II 112, 212 and HD100 amplifiers can be updated using an FBV MkII Express, FBV MkII Shortboard, or via MIDI with a USB to MIDI interface as follows: Connect your FBV MkII to your Spider Valve MKII using a standard FBV cable. Connect your FBV MkII to your computer using a standard USB cable. Launch Line 6 Monkey on your computer. Select your Spider Valve MKII as the connected device if it isn't automatically selected. Select the Flash Memory line item and click "Update Selection". Please also refer to the following FAQ for further update details: http://line6.com/support/page/articles/_/amplifiers/spider-ivspider-online/updating-the-spider-iv-75-120-150-150hd-us-r319 ***Please note: You MUST register your Spider Valve Mk II amp, and the FBV MkII Express or FBV Shortboard MkII in order to proceed with the update. Updating Note: Updating firmware does not erase User Presets. To return the amp to its factory settings, which includes restoring original User Presets and Amp Model Defaults, press the "A" Channel button on power up, then press the "Presets" encoder.
  20. This is 4-part video tutorial for Spider Valve MKII users on dialing in tones created by Line 6 Expert, Rowbi. Dialing In Spider Valve MKII Tones (Parts 1-4)
  21. Part 1: Spider, Spider Valve, HD147, and Vetta heads into the original Line 6 Stereo cabinet and Spider cabinet. Part 2: Spider, Spider Valve, HD147, and Vetta heads into the Line 6 Stereo Vintage 30 cabinet.
  22. This document explains how to update the flash memory of the Spider Valve Mk II using the FBV Mk II and Line 6 Monkey on Windows XP, Vista, 7 and Mac OSX 10.4.11, 10.5.8 and 10.6.x. Before you get started, you will need to have your Spider Valve Mk II connected to the FBV Mk II (Express or Shortboard) using a CAT-5 cable, and you will need to have your FBV Mk II unit connected to an open USB port on the back of your computer (do not use a USB hub). Be sure that your computer is connected to the internet. 1) Run Line 6 Monkey and you will be asked which unit you want to work with. Highlight the Spider Valve Mk II unit and select 'OK'. 2) Highlight 'flash memory' (it will turn blue), then select 'update selection'. 3) Select 'Yes' to continue. 4) Select "I Accept" for the software agreement and select 'continue'. 5) Select 'Yes' to update the Flash memory. Do not run any other programs or disconnect the cables while performing the update. 6) Allow the unit to go through the update process. This can take 5-10 minutes. 7) Select 'OK' when the update is finished. 8) You will see a green check mark in front of flash memory to show it is now up to date. Note: If you are having difficulty getting the Spider Valve Mk II to update, you can start the amp in "boot mode" by powering the unit up while holding the "Manual" and "B" buttons.
  23. Q: What is Spider Valve Edit? A: Spider Valve Edit is offered as a free software editor for all Spider Valve Mk II (112, 212, HD) amplifiers owners. Spider Valve Edit requires either a MIDI to USB connection from the amp to a computer, or a and CAT-5 connection from the amp to a Line 6 FBV Shortboard MkII or FBV Express MkII Series Controller with USB connection to a computer. See the following link for more information on updating your Spider Valve Mk II: Updating the Spider IV (75, 120, 150, 150HD) using the FBV Mk II and Line 6 Monkey Q: Do I need to have version 1.50 (or later) firmware installed on my Spider Valve Mk II amplifier to use Spider Edit? A: Yes, firmware version 1.50 or later is necessary to interface with Spider Valve Edit. Q: Where can I download Spider Valve Edit? Spider Valve Edit Download Q: How Can I get the Spider Valve Edit Manual? A: You can open the PDF document attached at the bottom of this document, or select the F1 key when using the Spider Valve Edit program. Q: Can I share Spider Valve Mk II tones using Customtone? A: Yes, here is the direct link to the Spider Valve customtone sharing site: Customtone Q: What is the file extension for files that will load into Spider Valve Edit? A: Spider Valve Edit will accept the .sve (single patch) and .svb (bundles) file extensions. Q: Are Spider Valve Mk II tones compatible with the Spider IV tones found on Customtone? A: Although the amp models are the same, the extension name for Spider Valve Mk II and Spider IV are different. Q: Why am I seeing an asterisk in the patch title when I change a parameter in a preset? A: An asterisk will show preset that has been edited, and will need to be saved either on the computer or the amp to make the change permanent. Q: Can I use the FBV Mk II to control the Spider Valve Mk II when I am using the FBV controller to interface with Spider Valve Edit? A: The FBV controller cannot function as an amp controller when being used as an interface for Spider Valve Edit. Q: Can I import multiple tone patches at once? A: You can import single tone patches or bundles at once, but not multiple single patches simultaneously. Q: Can I change the global (Auto FX, MIDI, Loop routing, etc.) parameters in Spider Valve Edit? A: Global parameters can be changed on the amp, but cannot be controlled by the editor.
  24. Application Q: What are the presets on my Spider Valve Mk II amplifier? A: There are 64 presets (16 banks of 4) programmed into the amplifier at the factory, and 64 empty preset locations for an end user to program. The empty 64 preset locations have defaults (1-4) in them as a starting place. Q: I noticed that the Artist/Song Presets from the Spider IV are not present on the Spider Valve Mk II? A: Yes, as many end users had asked for more locations to store their personal presets, we have removed the artist/song presets for the Spider Valve Mk II. Q: Are the Spider Valve Mk II series amps Mono(phonic)? A: Yes, the Spider Valve Mk II series amplifiers have a monophonic output (as are most tube amplifiers). Q: How can I connect a POD unit to my Spider Valve Mk II series amplifier? POD Connections, Routing and the 4 Cable Method Q: Do the Master volume and presence control applied to the power amp section only? A: Yes, the master volume and presence control are true analog. Q: Where is the Master volume located in the chain? A: it is after the preamp, and before the power amp. Specifications Q: What are the specifications of the Spider Valve Mk II series? Spider Valve Mk II Specifications Q: What speakers are used in the Spider Valve Mk II amplifiers? Spider Valve 112: Celestion Vintage 30, 8 ohm Spider Valve 212: (2) Celestion Vintage 30s, 16 ohm Spider Valve 412 cabinet: (4) Celestion Vintage 30s, 16 ohm Q: What tubes ship in the Spider Valve Mk II amplifiers? What is the power output? Spider Valve Mk II 112 & 212: (2) Sovtek 12AX7LPS or Shuguang Electron Group 12AX7B China preamp tubes, (2) Sovtek 5881/6L6WGC WXT matched set power amp tubes. 40 watts. Spider Valve Mk II HD: (2) Sovtek 12AX7LPS or Shuguang Electron Group 12AX7B China preamp tubes, (4) Sovtek 5881/6L6WGC WXT matched set power amp tubes. 100 watts. Q: What are the function of the 12AX7 tubes? A: V1 is the booster to the output tubes, V2 is the phase inverter for the output tubes. When viewing the SV MKII HD100 upright from the back, V1 is on the right side. On the combo, V1 is on the left side. Q: Can the Spider Valve Mk II handle another 12A_7 style tube without damage to tubes or circuitry? A: Yes, the 12AX7/AT7/AU7/AY7 types, but as these tubes act as a phase inverter and a boost to the power amp (rather than traditionally "cleaning up" the preamp section), you may not get the result you are looking for. Care must be taken with this and should be done by a technician well practiced in tube technology and modifications of this type. Q: What Line 6 controllers work with the Spider Valve Mk II series amplifier? Controller compatibility chart Setup/Connection Q: Is there a bias switch to change the power tubes to EL-34s or other power tube types? A: No, the Spider Valve Mk II does not offer bias switchable options and was designed to only be used with 5881WXT type of 6L6 power amp output tubes. Q: Is there a headphone output on the Spider Valve Mk II series? A: There is no headphone output on the Spider Valve Series, but you can use the XLR output to go to a mixer, then use the headphone jack from the mixer. Q: Can I run my Spider Valve Mk II amplifier without a speaker load? A:No, you cannot run the Spider Valve Mk II series without a speaker load. Please see the following link for more information on cabinet connections: Cabinet Connection and Ohm F.A.Q. Q: Can the Spider Valve Mk II be run with a Variac? A: This is not recommended as the lower voltage can cause problems with the digital processing in the Preamp section of the Spider Valve Mk II. Q: Can I run a Palmer S.E., THD Hot Plate, Power Soak, etc. for speaker simulation or power attenuation? A: There are no known issues regarding the use of any direct recording simulators or power attenuators between the power amp output and the speaker cabinet, but if there is damage caused by improper connections or malfunctioning gear, it will not covered under the Line 6 warranty. Be aware of “red plating”, when too much current across the plate can result in damage to the tubes and nearby circuits. Q: Do the Spider Valve Mk II 112 and 212 combos support external speaker cabinets? If so, will the external cabs mute the internal speakers of the Spider Valve Mk II? A: Yes, the Spider Valve Mk II supports the use of additional cabinets. Please ensure that the ohm load is correct to avoid damaging your amplifier if you intend to use both the internal and external speakers simultaneously. Q: What is the bias voltage for the Sovtek 5881WXT matched set of tubes? A: 35 mV (+/-2mV) Q: Does the XLR output still send signal when the amplifier is on standby? A: In some cases yes, in some no. Spider Valve MkII actually has two different modes of Direct Out, which can be found in the SETUP menu in Edit Mode. They are Studio and Performance. Studio mode is a traditional, DSP POD-style output with speaker simulation and will function when the amplifier is in standby mode. In contrast, Performance mode takes a tap off the output transformer, then goes through the speaker simulation before going through the Direct Out. This allows the tubes to interact with the DSP, and because the amp has to be on to allow this to happen, there will be no signal at the XLR output in standby if Performance mode is selected. Q: Does the Spider Valve Mk II have an FX loop? A: the Spider Valve Mk II has a pre-amp out (effect send) and Power amp in (effect return) section. Q: Is the effect loop series or parallel? Is the effect loop mono or stereo? A: The effect loop is series mono. Q: Does the Spider Valve Mk II have MIDI ports? A: Yes, the Spider Valve Mk II amplifier series has both MIDI in and MIDI out ports, and the Spider Valve Mk II will accept MIDI program changes on MIDI Channel 1-16, from values 00-127. The MIDI channel assignment can be accessed by pushing the “preset” encoder and using the left/right arrow key to reach “MIDI”. This greatly increases the opportunity to integrate Spider Valve MkII’s into your existing rig, and will also allow you to update your amps firmware via MIDI. See the advanced user’s guide for the full MIDI story. Q: Can I send a MIDI output from the Spider Valve Mk II to another MIDI-capable Line 6 amplifier and control both amplifiers with one FBV controller? A: Yes, but as different Line 6 amplifiers have different MIDI implementation you will want to go through each control on the FBV to ensure that you get the desired control on both units. Q: Is there an editor where I can connect my Spider Valve Mk II to my computer and edit/store tones? A: Yes, Spider Valve Edit is the editing software that can be used to edit the Spider Valve Mk II. Please see the following link for more information: Spider Valve Edit FAQs Q: What do the FBV Shortboard series stomp, FX Loop/Function 1, and Function 2 do? A: The Stomp button activates the "boost" on both the original FBV shortboard series (Mark I) and Mark II controllers. The FX Loop (Mk I)/Function 1 (Mk II) activates the Noise gate. The Function 2 (Mk II only) activates the loop feature on the Spider Valve Mk II. Q: What do the FBV Shortboard MkII Function 1 and Function 2 buttons do with Spider Valve MkII? How is it different from the original FBV Shortboard? A: The Function 1 button activates the Boost setting saved with each preset. The Boost setting (up to 8db pre and/or post amp model) can be found by entering “edit mode” on the SV MkII and pressing the R arrow on the 4-way nav button. The button equivalent to Function 1 on the original FBV Shortboard is labeled FX Loop. The Function 2 button (FBV Shortboard MkII only) is equivalent to the Quick Loop button on the faceplate of the SV MkII, and arms the built in Looper. For full functionality of the Looper, see the Spider Valve MkII Advanced User Guide. In addition, the Stomp button activates the first Smart FX on both the original and MkII FBV Shortboard controllers. Q: Can I run the Spider Valve Mk II head with only the outer two power tubes (removing the inner pair) to operate at a lower output volume? A: Yes, it is safe to run the Spider Valve Mk II Head with two 5881WXT’s. It is recommended that the output impedance be run at "half" when running in this configuration. An example would be running the 8 ohm head output connected to the 16 ohm cabinet connection, or the 4 ohm output to an an 8 ohm cabinet connection. Line 6 recommends re-biasing your amplifier to 35mv after removing the tubes, as the current draw will have changed. This should be done by a technician with lots of experience with tube amps. Q: Where is the fuse located in the chain? A: The fuse is located between the 12AX7s and 5881WXT’s (there is no master fuse). Spider Valve Cabinet FAQs Q: What are the specs for the Line 6 4x12 cabinet? A: 9 ply, ¾" wood with Celestion Vintage 30 speakers. There is no internal baffle. Q: What are the ohm load options for the 4x12 cabinet? A: The switchable ohm load options for the 4x12 cabinet are 16 ohm mono, 8 ohm stereo, and 4 ohm mono. Trouble shooting Q: What is the manufacturer's warranty for Spider Valve Mk II? A: The warranty for the Spider Valve Mk II amplifier is 12 months from the date of purchase, the tubes warranty is 90 days from the date of purchase. Q: How do I perform a factory reset on my Spider Valve Mk II? A: The factory reset for the Spider Valve Mk II series is to hold the "A" button while powering the unit, then pushing the presets encoder twice. Q: I hear a loud "pop" when I switch between certain presets on the Spider Valve MKII. Is this normal? A: Sometimes if the Channel Volume is set or saved too low on a preset a loud pop will be heard when navigating to it and away from it. This is because of the level difference between it and the other saved presets. Try adjusting the preset's Channel Volume above "12:00" and saving again. This should level out the difference between the presets and eliminate the popping sound. Q: Will using different brands of 6L6 tubes in the Spider Valve Mk II void the warranty? A: Yes, so no Ruby, Mesa, GT, JJ, Tung-Sol, or others. The characteristic curves are not close enough, and the vacuum-to-gas ratio (soft, medium, hard) of the tube plays a role in that. So it’s best to use the specified Sovtek 5881WXT matched set tubes. Q: My amp seems to be malfunctioning. What can I do as an end user? Amp Troubleshooting Tube Troubleshooting and Replacement *Q: Where can I download a Spider Valve Mk II manual? Line 6 Manuals Miscellaneous Q: Where can I get a cover for my Spider Valve Mk II amplifier? Cases And Covers
  25. Q: What is the difference in power rating between tube and solid-state power amplifiers? A: Tube power outputs can peak 200 to 400% above solid-state, so a 50watt tube power amp can output a volume equivalent to a 100-200w solid-state amplifier output. Q: What are the common Preamp tubes? A: The 12AX7 (ECC83 is the European term, or the military term of 7025) is the most common preamp tube for driving the Gain and EQ sections of the amplifier, as well as driving the signal into the power amps. The following tubes have a lower power rating and can be used in the preamp section or other amplifier functions such as the reverb tank drivers, inverters, etc. 12AT7 (ECC81, 6201): 60% power of the 12AX7 12AU7 (ECC82, 5963): 19% power of the 12AX7 12AY7 (6072): 45% power of the 12AX7 Q: What are the common power amplifier tubes? 6L6 (5881/KT66): Commonly used in American amplifiers such as Fender, Mesa, Peavey. Typically has more low-end emphasis. EL34 (6CA7/KT77): Commonly used in British amplifiers such as Marshall. Typically has more midrange emphasis. EL84 (6BQ5): Commonly used in Vox , Gibson, Matchless, and Bad Cat amplifiers 6550 (KT88): Commonly used in VHT, Ampeg SVTs, and Leslie Speakers cabinets. Typically has more power output than the other tubes listed here. Q: What other power amp tubes are compatible with the Spider Valve? A: Line 6 stresses using 6L6 (5881/KT66) power amp tubes only. Other power amp tubes such as 6550's can draw too much power and damage your amp and void your warranty. Q: How long should I let tubes "cook" after biasing before I measure again? A: The standard cooking time is 3-6 hours after an initial bias (regardless of the tube age).
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