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OmniFace

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OmniFace last won the day on July 18 2020

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  1. Helix has a few bass amps and cabs, but nowhere near as many as the Bass Pod. So it really depends on what tone you're looking for and what that artist's patch used.
  2. Yep. There's also a switch on the back to turn off the cab/mic modeling completely, for use with a real cab. I don't believe the Spider has any HX algorithms, but depending on what you do, that may not matter. If you cant a powered helix, get the PowerCab212+ and don't look back. If you want a decent alt rig for easy practice or to play with friends, the Spider V is a pretty decent choice IMHO.
  3. I have both. I got the Spider V stack for my second guitarist to use. It's been a while since I used it though... I think the new Spiders sound quite good. I haven't directly compared models, but I'd wager they're close enough that most people wouldn't notice. Recording wise it sounded definitely usable from what I recall. Speaker/mic sims were always a weak point in the lesser gear, but I think they're much improved these days. Some people really didn't like the speaker cab being used to output a fully modeled signal as if it was mic'd, even with head adding tweeters. When my guitarist used the stack it was a bit muddy, but I"m sure it could have been fixed with a little work on the tone. It's hard moving from "no amp" in-ear practice to full amp shows. The MKii has the option for "classic speaker" mode which turns off the mic sim and full range functionality so it sounds more traditional. For live that's probably preferable. Not sure how that impacts the DI outputs. The head has the built in speakers and wireless receiver which makes it pretty useful for a practice amp, but it is a little on the large side still.
  4. True, but 24-bits works with 16,777,215 points of amplitude. So, while your example on small integers is correct that some noticeable rounding errors would occur, the scale you chose makes your example meaningless. The number of audio points in 24 bit audio means the rounding errors are insignificantly small. Assuming the audio is integer based, we'll divide this range up into 100 dBs for ease of use. Here are 3 random points using -100db = 0 and 0db = 16,777,215 on the y axis -9dB = 15,267,252.65 -42dB = 9,730,784.7 -86dB = 2,348,810.1 If we round them all we have at max difference of 1 in the 1's place. -9dB = 15,267,253 -42dB = 9,730,785 -86dB = 2,348,810 We have more than enough integers to account for the shift. If we compare the unrounded vs the rounded we have a difference of just a few 100 millionths. -9dB = 1.0000000229 -42dB = 1.0000000308 -86dB = 1.0000000426 So yes, the signal is not technically identical, but the difference certainly negligible. Even if this increased noise it would be unnoticeable in my opinion.
  5. I vaguely remember testing it, but I heard hitting the tap tempo button may start the cycle over. So you can possibly get them synced manually. Not ideal obviously. Sending a Program Change message to select a patch might also reset the cycle?
  6. Interesting. I haven't tried it out, but I'm sure it's worth playing with a bit. The XLR inputs have adjustable input gain levels on the PC up to +12dB. The Line 6 Link may have a gain adjustment but it would probably just be a decrease in signal since it's digital, and would rely on the output gain of the Helix or whatever you're using. If you've not level matched the comparison then the tone should sound different due to the Fletcher-Munsen curves. Though I'd expect the louder signal to have more bass and treble. If things are level matched they should theoretically sound the same? There's apparently an impedance option on the XLR/Instrument inputs (though I don't know if they affect the XLR). If it's set to Instrument impedance. I wonder if it's dampening the treble of the analog signal or something, which could make them sound different. Maybe that might mean that your tone has too much treble and the L6 Link is accurate, but the analog impedance option is toning it down? How does it sound if you record the XLR outs using L6 Link in or XLR in?
  7. Haven't tried it. Could theoretically overheat, but I assume it would auto shut off in that case. That looks like a PC212+ right? I'm not sure if the PC212+ speakers are tilted outwards slightly to help with stereo imaging, or if they both face straight forward. If they angle, you might get a little weirdness sending half the signal into the floor basically. Probably nothing to worry about though.
  8. Not that I'm aware of. The issue is minor though. I wouldn't worry about getting a 2nd one.
  9. OmniFace

    Powercab help!

    I have two PC212+s and one of them rattles with high volume while the other does not. The issues sounds like a loose wire or something. I missed my warranty window, so I'll fix it myself one of these days, but you should either return it for a different one or go through warranty.
  10. The "Ext Amp" jack is used to control the channel footswitch on your amp or enable/disable reverb, et.. It's not for audio. Connect the Helix 1/4" Left/Mono Output to the front of your amp instead. Don't use amp or cabinet sims into the front of your amp, for best results. Or, use them, but plug into the FX return of your amp so the Helix is the preamp. The Helix is a complex beast. You should really consider reading through the manual in the future. At least read up to the end of the Quick Start section.
  11. Very interesting speaker. Awesome that Celestion even provides a DIY cabinet design. I'd love to see some specs on the speaker alone and the DIY cabinet w/ speaker. That said, the PoweCab likely compensates for the EQ curve of the stock speaker. So dropping a different speaker in will probably sound a bit different. The PowerCab uses a 12" with built in tweeter as well, so the differences are probably minimal though. Would be sweet to get a few of these and make a 412 or something, or make some floor monitors.
  12. "noise is added because it masks aliasing noise" I believe what you're referring to is Dithering, which is used when converting an audio signal into a lower bit depth. Normalization is simply raising or lowering the amplitude of the entire track. It doesn't alter the sample rate or bit depth of the signal. It merely says that a audio data point sitting at say -6 dB is now -4.7dB. But it does that for all data points, meaning that means that the S/N ratio stays constant. Both get louder or quieter in equal amounts at the same time. However, using an external interface rather than the USB does mean the signal has to be converted from D to A, then A back to D again. That said, I'd wager that converters these days are such high quality you may have to run them through conversion hundreds or perhaps thousands of times to hear a difference. Plus it means going through the interface hardware coloring the sound in whatever way that device does. That can impact the S/N ratio because the interface will introduce its own noise, and setting the Helix output and hardware input will be important.
  13. "so it'll be 70Hz on the low end, too." Not necessarily. Having multiple speakers means more surface area. This results in better low end response. This is why subwoofer speakers are usually larger sizes like 15" or even 18". That said, the manual does state all PowerCab models have a range of 70Hz-20KHz. So, you're correct in the end. :) The 112 vs 212 presumably have their own EQ compensation curves (for multiple reasons), and the fact that they have the same response listed in the manual means they presumably account for the different bass response down to 70Hz. I bet the 212 has better low end response below 70Hz though, due to the doubling of surface area, but L6 doesn't provide a chart to look at.
  14. Admittedly I only parsed much of this topic after the first several comments. But I don't think I've seen anyone point out how USB works. The USB B port is universally meant to connect a "peripheral" device to a computer. In this case, the Helix is a peripheral device. It will send data from the USB B port, but you need a computer with device drivers to talk to it... In fact the computer does the talking for the most part. It controls the conversation. Computers have the USB A port, universally meant to receive a connection from a peripheral device. You'll notice that any wireless MIDI device you can buy generally has a USB A port. Some could have the new USB C connector possibly, but I didn't look. Regardless, the device can talk over USB, but it's meant to talk to a computer. It's not meant to talk to another peripheral. You can't take a peripheral device and make it talk directly to another peripheral device. They don't speak the same language, nor can either control the conversation. For example, you can't connect the Helix to a Printer. It wouldn't make any sense anyways even if you could (like if everything had the newer USB C connectors). Both are made to talk to computers only. In short you can't connect a wireless midi device to your Helix without a computer in between. Unless Line 6 makes a wireless midi device specifically for this purpose, which can talk to the Helix directly and control the conversation as a computer would, it won't happen.
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