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does anyone know the manufacturer/model of the tweeters used in the Mesa Road Ready bass cabs? I am looking to replace a couple of them and would like to find the same model. Thanks for your help!

I bought a IIB...100/60, Rev, EQ, hardwood/wicker with a JBL K120 w/original footswitch and original owner's paperwork 16 months ago for $1250 shipped. Me thinks your teacher asketh too much. My $0.02.

if the problem is coming from a power tube socket pin, you probably would be able to reproduce the problem noise by wiggling the power tube(s). you may have a bad solder joint somewhere on the PCBs....if you're game you can try to locate it by running the amp (speaker connected) with the chassis...

the circuit boards look like stock IIB...only one relay for channel switching, no multiple vactrols like in a IIC, IIC+ or III

with no footswitch connected, the front panel switch is functional. if you don't notice a change in tone when switching the EQ in, there's something wrong with the EQ circuitry.

I've had my 1982 Mk IIB for about a year now. I bought it with a JBL K120....sounded great Clean, but very raspy on Lead side - that speaker didn't like overdrive, regardless of the EQ settings. I replaced the JBL with an Eminence Delta Pro 12A....sounded fantastic on both clean and lead - very...

there are 2 jacks and a mono/stereo switch....in mono mode, you plug your speaker cable into your amp's 4 ohm jack and the cab's left jack labeled '4Ohms'. plugging into the right jack gives you a 16 ohm load....optionally, you can connect your MkIV 8 ohm jack to the 16 ohm cab jack. Or switch...

watch the video at 4:38 the knobs spin....meaning the sliders have all been removed, and 3 holes have been drilled for the pot shafts. for whatever reason, the sliders needed replacing and rather than find replacement sliders, they went with round pots....they could only fit 3, so it's now a...

Looking at your list of amps in your sig, all you need is a 3-amp switcher. Hiwatt for cleans, Superbass for crunch and your IIB lead channel w/EQ for lead playing.....you'll need a roadie and a trailer, too 8) that's how i use it in my classic rock cover band....clean rhythm channel (no EQ)...

you'll need a battery or AC adapter jack on mine, i later added an additional toggle to assign EQ to either lead or clean

i'd start with a true bypass wah in front of your amp, something like a teese picture wah http://www.realmccoycustom.com/RMCPW.htm

yeah, right about the metal tabs that need to be unbent to get the EQ board off....no screws. sorry

your amp always sounds that way to whoever the speaker is aimed directly at....this time it was you. next time roll down your treble or presence control....that's why they're there.

Each band has a slider pot, resistor, cap and inductor. you'll need to do a little troubleshooting to figure out which part is the problem. To get the EQ board off, you'll have to pull the chassis, remove all the front panel knobs, jacks, pot nuts, switches and lamp in order to get the...

The box has 3 stompswitches, 2 micro toggle switches, 1 mono jack, 1 stereo jack. I used a 3PDT main channel switching stompswitch, with an LED, like the stock factory channel switching pedal. 2 additional SPST stompswitches, controlling EQ and reverb, fed by a stereo jack. A standard guitar...

there's more than one way to use a thd hotplate. most people put them in series between amp and speaker, and click away the decibels, sucking some power into the resistive circuitry of the attenuator, with a net result of less overall volume (and some tone, at higher db reduction settings)...

if you are comfortable modding amps and performing cap jobs, then buy yourself a nice pair of SED =C= 6L6GC's and swap the bias resistor as needed. a fine pointed metal probe to slightly tighten the metal tube socket elements and a shot of contact cleaner and you are good.

your guitar signal runs through a switch on the effects return jack. if the switch contacts on the jack are dirty/intermittent, you lose signal/volume and get noise and static. connecting a cable between the 2 jacks makes solid contact and eliminates the loop jacks as a source of your problem...

did you try a fender twin reverb reissue? that's the clean channel circuit/sound the mesa mark amps were patterned after. they can be had used for $500-600. i'm guessing your harp would sound killer throught he vib channel with some reverb and tremolo dialed in

i'm just guessing here, but that is possibly a stereo jack with send connected to the tip and return on the ring....try your pod and standard mono 1/4" cable inserted just to the first click, so that your plug tip engages the ring element of the jack (turn your pod output volume down first)