I've got a Fender Champion II 25 which at 12 pounds is a good match to my 67 years. It does an excellent job simulating a Fender Deluxe Reverb clean and slightly overdriven. It probably excels at other things, but that is what I use it for. In some situations, I would like to connect it to a PA without losing the speaker output. The headphone output sounds very good into my JBL IRXBT108 but mutes the speaker. Unlike the previous generation Fender Champions that have a differential class D output, the Champion II has an old-fashioned class AB output with one side grounded (looks like an unmarked clone of the discontinued TI LM1875). I think I can get away without a transformer. I've found this on the Internet and might try it:
Seems it is a -27 dB pad with a -3dB@1.4kHz single pole low pass filter, if I did the arithmetic right. When I read free Fender Deluxe Reverb cabinet IRs into Audacity and check the spectrum with a rectangular window function it does not look much like a single pole low pass, though 1.4 kHz might not be wrong. I'm not certain how much of that junk is the short snippet and that window, but it seems any other window function would clobber the IR's main tap. When I try a Blackman window a simple low pass filter does not look that far out of place.
The passive cabinet simulating Friedman "Amp No Mo" DI has a potted can which no doubt obscures their secret sauce. Buying a $99 DI for a $129 amp is just too crazy for me. Any ideas for something more sophisticated than the above, but still passive? There seems to be a rich selection of Chinese branded inexpensive active DI's with "cabinet simulation" in their bullet list of claims, but sticking with something passive appeals to me and I'm not a shredding connoisseur of high-end high-gain tube amps.
Thanks!
Jon
Seems it is a -27 dB pad with a -3dB@1.4kHz single pole low pass filter, if I did the arithmetic right. When I read free Fender Deluxe Reverb cabinet IRs into Audacity and check the spectrum with a rectangular window function it does not look much like a single pole low pass, though 1.4 kHz might not be wrong. I'm not certain how much of that junk is the short snippet and that window, but it seems any other window function would clobber the IR's main tap. When I try a Blackman window a simple low pass filter does not look that far out of place.
The passive cabinet simulating Friedman "Amp No Mo" DI has a potted can which no doubt obscures their secret sauce. Buying a $99 DI for a $129 amp is just too crazy for me. Any ideas for something more sophisticated than the above, but still passive? There seems to be a rich selection of Chinese branded inexpensive active DI's with "cabinet simulation" in their bullet list of claims, but sticking with something passive appeals to me and I'm not a shredding connoisseur of high-end high-gain tube amps.
Thanks!
Jon