Will the schematic I've posted along with this post work as a unity gain phase inverter?  Would I ever need to apply power to the dual opamp, or since it's unity gain, could I just use it as a passive phase inveter?

Sorry if those are stupid questions, I guess i just got used to seeing 12AX7 long tailed phase inverters in tube amps that when I think "phase inveter", that's the only thing that pops into my head!  :duh

Rock'n'Roll,
--Andy

I'm sure I can handle printint out the manual.

Rock'n'Roll,
--Andy

Thanks, Joe!

I'll let you know when I get it in and I'll try really hard to document the build and put a build report.

Rock'n'Roll,
--Andy

Yeah it'll be the right address.

Rock'n'Roll,
--Andy

Thanks!  You should probably get the $5 today.  Since I don't have paypal myself, I asked my dad to send you $5 from his account and he said he would sometime today if he gets a chance.

Rock'n'Roll,
--Andy

Can I have the soldering iron?

Rock'n'Roll,
--Andy

I don't know exactly how much cheaper it would be, or how much speakers cost off the top of my head.  I'm pretty sure with most speakers though, it's the impedances that need to mach, as power handling shouldn't be that big of an issue.  The actual size of the speaker (8" speaker vs. 12") doesn't depend on the wattage of the amp at all.

Rock'n'Roll,
--Andy

Well, that 100watt amp uses transistors for the power amp.  It could be alot easier (and less expensive, I think) to use an op-amp.  One opamp could replace several transistors.  The highest wattage you can get out of any opamps that we here at the boards use is 68watts, and that's using a LM3886.

Rock'n'Roll,
--Andy

Yessir - quite an excellent idea!

Rock'n'Roll,
--Andy

Are you ever going to want this thing to sound clean, or is this a distortion only amp?  I mean you said that you like Metallica and AC/DC, so I'm assuming you'll maily be playing with distortion, but of course, it's always good to be able to have some clean sounds.

Rock'n'Roll,
--Andy

Exactly how loud do you want it to be?  If this is just a amp for practicing around the house, you could probably get away with using a single LM1875 which would push about 20watts.  Then you could use the preamp from that link you provied.

Rock'n'Roll,
--Andy

Oh, ok.  I'm just going out of the .pdf file that teemuk posted.

Rock'n'Roll,
--Andy

As far as pre-amps go, you might want to look into various distortion pedals that you could build into your amp.

Rock'n'Roll,
--Andy

Running the input into one op-amp's + inupt and to the other op-amp's - input will put the signals out of phase, correct?

Rock'n'Roll,
--Andy

So if I'm understanding this correctly (and that's a big "if"), if I was running two LM3886 amplifiers (like the ones from http://www.chipamp.com) bridged, I could just stick a phase inverter in front of them and i should be good to go!

Rock'n'Roll,
--Andy