JGale

The single speaker in a dual speaker cabinet is the basis for De-Tuned speaker cabinets by Kevin O'Conner. I tried it out with a 4x10 with a Blue and Silver Pup. It was very nice. Some examples: http://www.auble-systems.com/studioclassic.html

Well Done Pig! Well done.

Cough, cough...I'm just sayin' Ed, if you wanted to maximize your donations...

Come on guys. Just fucking stop it. It leads nowhere. Trust me? Here. Look at this cute picture of a kitten to mollify your day.

Can it be the ending to a Joe Walsh song? Walk Away then...

Yes. It works P-P with two differing octal output tubes. I have a 6V6GT and an EL34 in there now. No auto discovery. There are three taps (V1 GRD, V2) and two bias trimmers (V1, V2) on the back. Procedure is: Set bias for V1 between V1 tap and GRD. Set bias for V2 to zero using V1 tap and V2 tap! He suggests setting V2 to minimum hum for best results and tighter bass. Right! Hum. As if I can hear any. This mofo is exceedingly quiet. You discover differences in each tube. It has been quite educational. BONUS DISCOVERY! Sovtek 6L6WXT+ is good tube comrade. Clean and tight. I have been using a 6V6GT in V1, and setting V2 to match cuz the 6V6s are old and the EL34 doesn't seem to care. 6V6 and KT66 is pretty fun too. More pics

Yes. Very nice indeed.

Yup. Keep popping the top to change out toobs. It's a wonderful laboratory for sussing old tubes. It is single channel, series effect loop with adjustable send and return gain. The loop is solid state. Listed at 25W, but the Mesa 20/20 I have here is much, much louder. However, the Mesa (with PSA) does not sprinkle the honey dew, sparkly, tinkly, bubbly yum yum this one does. Four 12A_7 gain stages, two octal output tubes. Takes any combination of 6V6, 6L6, KT66, EL34 and variants. A GearGeeks(c) wet dream. No EQ. At least not an intuitive one. According to the manual: DRIVE is the gatekeeper for the uncontrolled 1st gain stage. It affects the gain of the rest of the amplifier. EDGE increases gain and high frequency emphasis of the 2nd, 3rd and 4th gain stages simultaneously. It is active and starts at fully CCW. SHIMMER is an active control for bass and mid frequencies. Cut or boost from 12 O'clock position. GRIND apparently controls the gain of the 2nd and 3rd stages in some discrete combination. Increases sustain in clean settings. LOUD is the gatekeeper for the preamp. It is post RETURN loop which can be used for additional gain. BODY continuously varies the output of the two output tubes from Single-Ended (V1 only) to Push-Pull (V1 and V2). And anything in between. SE is softer, P-P is fuller (more body, heh). POWER SCALE dials down the output section for lower volumes with little to no change in tone. LOUD and POWER SCALE are normally set equal but you can vary them to emphasize either preamp or power amp distortion. The clean is everything I have been looking for and plenty loud. High gain seems to be had at a cost in volume. Starting at maximum clean power, the two suggestions are turn the LOUD up and the POWER SCALE down to emphasize power tube distortion, back off the LOUD control and crank the POWER SCALE to emphasize preamp distortion. Preamp settings to taste. Both result in less volume than the full clean setting. I have not seen anything online concerning the amps. Ser O'conner doesn't seem to want discuss it. He was very helpful though getting this thing running again after a transistor in the active hum circuit failed.

Yes, yes, yes. But overlooking the fact they are best suited for studio work, they still are fabulous sounding amplifiers. Ask me how I know. Quite possibly the very end of "The Search."

Well, one suggestion...he can be the Instrument of Annihilation! And have a spare left over for World Domination.

Alnico much, Beyotch!

At first I was like... But then I was like...

Unmolested except for cutting the power cord (death cap device). I can offer you most all of the tubes for it (Tesla EL84s, Sylvania 12AX7, JAN 5Y3GT) except the 6U8. It will need a cap job given the age. $200 shipped CONUS

London Power ICON 6-Channel Tube Guitar Preamplifier ICON has six fully independent all-tube preamplifier channels that can be used individually, all at the same time, or chained. Each channel has its own Input and Output jacks on the rear panel, along with dedicated tube(s) accessible on the rear panel without removing ICON from the rack. ICON is the only one that lets you use all these sounds at once – in fact, six different players can use ICON simultaneously! Toobs! Tooobs! Tooooobs! Each channel of ICON accepts a wide range of tube types, and each type provides an entirely different soundscape and range of clean or distorted textures. Channel-1 is the Fender clean sound, following the classic architecture that all Fender guitar amps had by the early 1960s. Use a 12AX7 here for that tone; use a 12AT7 for a mellower sound that includes a bit of the speaker treble roll-off; go to 12AY7 for use with harmonica, or to 12AU7 for the mellowest tone possible. Add some reverb for the quintessential Fender clean sound and for surf sound. Channel-2 is the Vox “Top Boost” preamp, which Vox used to balance the muddiness of their cathode-biased EL-84 power amp in the AC-30. On its own, the top-boost preamp sounds rather thin, but when combined with a modern “18W” amp it will sound like a vintage AC-30. You may also chain Channel-2 into Channel-1 using Channel-1 to mimic an over-driven power amp. Use a 12AX7 for the original tone, or mellow it out to an “octal” tone with the T, Y or U. Channel-3 is the Marshall “master volume amp” sound of the earliest 800s, or the 2203 and 2204 amps. This is like Eddy van Halen’s “brown” sound if you add an EL-34 power amp and a phase pedal at the input. Use two 12AX7s for the original tone, or take it down with one or more of a 12AT7, Y, or U. Channel-4 is the London Power Standard Preamp high-gain path, which represents hundreds of hot-rodded amp models of the 1980s and 1990s. Two 12AX7s achieve the full saturation, but less heavy sounds with a hot-rodded voicing can be attained using one or more of the T, Y or U. Channel-5 is the Dumble over-drive sound set for jazz voicing. We’ve included two front panel controls to give the topology more versatility. The sound of an over-driven Fender amp was the original goal, the same as the Mesa mark-1 and Mark-2 – a parallel development of Howard’s idea by Randall Smith. Use two 12AX7s for the original sound, or take it down a notch or more using one or more of T, Y or U. Channel-6 is the Soldano SLO path – the basis for most modern “mid-sucking” metal tones. Use two 12AT7s or 5751s for the original tone. Use 12AX7s for the Mesa rectifier tones or Peavey and Fender’s 5150 tones – dead copies of the SLO. Take it down a notch using one or more Y or U. RTFM The site with more info HERE $2110 USD