This allows you to vary the amount of signal going through the tubes and allows you to vary which part of the freq spectrum distorts.
Lots of different crunch flavors can be dialed in, very mid forward sounding like I remember Robbin Ford and Larry Carlton sounding in the 70's.
The tone controls work differently than I'm used to on any other amp, the treble control really makes a huge difference in the sound, and where it sits seems to affect the other EQ controls, especially bass. The pull bright (or pull boost-can't remember) seems to defeat the tone controls- Would anyone know if this is correct? The tone knobs have more influence over preamp distortion than in other amps.
To my surprise input 1 and input 2 are completely different in sound and operation.
Input 2 is very Fendery, clean, warm and round and very difficult to break up.
Also, are the 2 jacks (bottom one has "Line" label) on the back an FX loop in/out? The tone controls work differently than I'm used to on any other amp, the treble control really makes a huge difference in the sound, and where it sits seems to affect the other EQ controls, especially bass. One lesson I have to remind myself of every now and then on Boogies is to start with the tone knobs all the way down, and then pull them up slowly.
The older boogie tone controls are at the start of the pre-amp section where as most other tone controls (ie Marshall etc) are at the end of the pre-amp.
Get some NOS tubes to find out what all the fuss was about back in 1977, when everybody playing fusion had to have one.
Hey all you amp slutz out there- Trying to find out some info about this old Boogie combo I acquired recently.
Mic has graciously granted permission to post the stuff on the JT30 page on the off chance that it might be useful in the context of Blues Harmonica.
Mic is not responsible for the content, just the collection. * Hinged plastic carrying handles on AC4 & AC10, large leather strap on AC15.
_________________Mesa Mk IVMesa MK IIc Simlu, Rev, Eq Cream with matching 1x12 EVM Cab Mesa Mk IIc 60w, Rev, Export, combo EVM-12 Mesa EVM-12L 1x12 Theile Cab Mesa trad 4x12 cabmesa MK III blue stripe (sold)Mesa dual recto 3 channel ( sold ) I do not have the time to sift through 30 pages of miscellaneous questions regarding R2 and boosting it with a TS9.