Interface then THR

Covers entire Yamaha THR range of guitar amps, heads and cabs.

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Krugg
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Interface then THR

Unread post by Krugg » Wed May 30, 2018 9:57 pm

Hey y'alls,

I'll keep this short. The THR has a very realistic nice pick response--the notes sound like they wanna jump out of the speakers. It's fast, dense, has a strong center (as opposed to a hollow out-of-phase response) and strong transients.

As soon as I interrupt the signal with an interface (Guitar > interface (which is connected to my PC)> THR Input), all of that goes to ****. Even on the flat setting. It sounds like you put a very strict compressor which makes the attack sound weak. Very obvious with palm mutes.


I tried messing around with the gain on the interface and the THR but it's the same issue with every gain combination.

It can be subtle, but try to A/B it and you'll see what I mean. In one experiment, I replaced the interface with a bypassed pedal to make sure the extra cable length wasn't the issue, and it wasn't. It is the interface (Scarlett 2i2).

Weak compressed attack sounds like what happens when you use two preamps at once but I don't know what's going on here.

Let me know what you all think (I hope that was "short").
Krugg
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Re: Interface then THR

Unread post by Krugg » Wed May 30, 2018 11:43 pm

Update: If somebody wants to try this, it would be very helpful if you tried it with a Y cable coming out of the interface into the THR. All this time, I've been trying it with one cable.
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Miks
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Re: Interface then THR

Unread post by Miks » Wed May 30, 2018 11:46 pm

Not owning a THR amp myself - but thank you very much for the hint. (Y) Could be useful for other users facing the same issue.
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Saul
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Re: Interface then THR

Unread post by Saul » Sat Jun 09, 2018 12:16 pm

Can't test this either as I don't own a THR but obviously this is not an issue with the amp itself but the Scarlet 2i2 interface compressing the signal. I did own a 2i2 but changed it for a Presonus AudioBox iTwo and maybe it's my imagination but it does seem to sound better, certainly when I mic up an acoustic guitar into it.

We do have a lot of THR owners on the forum so I am sure someone else must have tried the setup your describe...if not with a Scarlett 2i2 then another audio interface. Would be very interesting to hear about any issues they might have come across.
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Krugg
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Re: Interface then THR

Unread post by Krugg » Sun Jun 10, 2018 12:08 pm

Saul wrote:
Sat Jun 09, 2018 12:16 pm
Can't test this either as I don't own a THR but obviously this is not an issue with the amp itself but the Scarlet 2i2 interface compressing the signal. I did own a 2i2 but changed it for a Presonus AudioBox iTwo and maybe it's my imagination but it does seem to sound better, certainly when I mic up an acoustic guitar into it.

We do have a lot of THR owners on the forum so I am sure someone else must have tried the setup your describe...if not with a Scarlett 2i2 then another audio interface. Would be very interesting to hear about any issues they might have come across.




The interface takes some of the high mids/treble away, resulting in a sound that is less crunchy and sounds more like a neck pickup--this is exactly what a fuzz pedal would do, and the more you turn up the input on the interface, the worse it is, so it is possible the signal is being distorted.
I must also mention that the outputs on the Scarlett are Line Out. So that may be an issue that a re-amp box would solve.

The "Inst" input impedance is also not revealed by Focusrite, so impedance may also be another issue.



But the really interesting thing is that I tried actually using the THR itself as an interface (with the USB jack on the back). At a sample rate of 44100 HZ with different buffer sizes, the sound coming out of the "USB/AUX" knob was very similar to the sound I got with the interface: less crunch, softer attack, strings that feel like very very thick paper rather than steel, shy notes hiding inside the speakers.

Would be very interesting to hear other people's experiences.
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Artie
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Re: Interface then THR

Unread post by Artie » Fri Oct 12, 2018 5:41 am

Hey Krugg; I have the 2i2 and I just recently acquired a new THR10. Let me play around with mine the next few days and see if I can duplicate your situation. I assume you have the front panel switches set to "Inst" and "Direct Monitor" turned on. Also, be aware that the line outputs are balanced, so if you plug into the unbalanced THR input, you'll only get half the output voltage. This, along with the impedance mismatch, might be part of the problem.

But I'm speaking hypothetically. Let me play with mine a bit and get back to you. One last thing, you mention, (in the bold part), that "the sound coming out of the "USB/AUX" knob was very similar . . .". The signal that goes out the USB port isn't in the "USB/AUX" signal path. That knob should only affect the audio that comes in the USB port.

Anyway, I'll report back after I experiment with mine a bit.

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Re: Interface then THR

Unread post by 314159 » Sun Oct 14, 2018 12:06 pm

Hi,
I do not know if it is related to your problem, but I remember that I have tried to use the Ardour DAW software more than one year ago, and I discovered that it was possible to record via USB both the full sound of the THR10 (with every settings and effect) and the raw sound coming from the guitar (without any transformation applied by the amp). But I have stopped experimenting with that complex software and I can not remember how I have done that...
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Artie
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Re: Interface then THR

Unread post by Artie » Sun Oct 14, 2018 2:56 pm

Yeah, the block diagram shows both the pre and post effects signal available at the USB output, but I've been swamped with customers guitars lately, and haven't been able to plug mine into the laptop yet to play with the software. Hopefully, soon.
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