I don’t own a cathedral, but when doing that sound, I think a little bit of overdrive helps.

My friends and I did a spaghetti-esque jam for a soundtrack to a friend’s movie that never got made.

Listen here:

http://www.soundclick.com/bands/page_songInfo.cfm?bandID=981488&songID=7949466

I’m the left guitar- DOD-250 into SMMH on reverb setting. I believe the dry signal may have been clean, but I’m not 100% sure. Later I add some Little Big Muff or Big Muff with Tone Wicker (I forget which one, tone wicker probably, because it sounds more open.) If I had any tremolo it was a Subdecay prometheus set to Low pass filter with no resonance and a fast sine wave setting. My guitar was a neck-through on the bridge humbucker.

My friend on the right has a simpler approach. Vox AC30 with some trem and verb. He might be using amp OD, or he might be using a Boss OS- or OD- 2 or 3. His guitar was a stratocaster.

Well to me the quintessential is to have sort of a dirty surf sound. Like the Ventures decided to make their music slow and mean. A lot of those used danelectro baritone guitars too. A good 60sesque fuzz, the best reverb you can get, and some light tremolo and you’re good.