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kelmaur
Gold Member
USA
505 Posts |
 Posted - 01/30/2009 : 06:04:18
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| what is the difference between the two |
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Right Foot Boss
Gold Member
USA
881 Posts |
Posted - 01/30/2009 : 07:19:19
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COSM 
That and the AC-3 has reverb.
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kelmaur
Gold Member
USA
505 Posts |
Posted - 01/30/2009 : 11:08:24
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| What is COSM? |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/30/2009 : 11:57:23
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quote:
Originally posted by kelmaur
What is COSM?
COSM
Composite Object Sound Modeling.
Basically it's Digital
- using DSP sound processors & ROM to emulate the tones & sounds.
Like amp modeling, but also pedal modeling.
Korg call it: REMS
Zoom call it VARMS
Line6 call it whatever they want. 
I'm sure I missed a few ...
Regards Dr. Bob |
Edited by - Dr. Bob on 01/30/2009 12:01:23 |
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DeFrag
Moderator
USA
3409 Posts |
Posted - 01/30/2009 : 15:50:10
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| They basically sample waveforms & create algorithms to mimick the gear they're modeling the effect(s) & burn the code into ROMs. |
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zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 01/30/2009 : 18:26:10
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| COSM=CRAP |
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Erik dP
Silver Member
Sweden
150 Posts |
Posted - 01/31/2009 : 08:58:56
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I have a AC-2 and it sounds great (with a split humbucker).
I tried a AC-3 in a store and I couldn't get any acustic sounds from it. I tried a few different guitars with singlecoil and split hums through a Roland amp which might limit the frequency range.
I think I have read more bad reviews of AC-3 compared to AC-2 on Harmony Central. (I guess that some of the bad reviewers use humbuckers.) A Swedish magazine, FUZZ (fuzz.se), said in their review that AC-3 was an improvement over the AC-2. Maybe it should be run through a full range PA to shine. I have never A-B tested them with the same amp.
I do like the AC-2, but I picked up a used Line-6 Variax a few weeks ago, so I don't use it anymore. I dont use my Les Paul or my PRS either. I gotten used to the different tunings I can get with the Variax - e.g. one octave down on the low E and A string, or open G. |
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PaulH
Gold Member
535 Posts |
Posted - 01/31/2009 : 09:54:52
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quote:
Originally posted by zerksies
COSM=CRAP
On what basis have you come to that conclusion? |
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harmoniced
Copper Member
Australia
27 Posts |
Posted - 06/07/2009 : 17:35:08
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I have an AC-3 and run it through a 50w combo with single-coils, it gives a distinct eq shaping quality to the sound, I like to call it a 'clarifyer' as I feel that's what it does.
As for the acoustic capabilities, the pedal is meant to be run into a PA system which has a broader frequency range than a guitar amp, in order to deliver the simulation, it states this in the manual. I'll be running it through different PA's in upcoming gigs, so I'll let you guys know if the difference is there or not.. |
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Jkeatley
Copper Member
United Kingdom
47 Posts |
Posted - 06/08/2009 : 00:56:04
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quote:
Originally posted by zerksies
COSM=CRAP
well the "modelling" on my CE-20 maybe be crap, but it sounds bloody ace anyhows, like a pod may not sound like the real thing but i still like it and joy in recording it |
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jsoi_narciso
Silver Member
Philippines
200 Posts |
Posted - 06/08/2009 : 06:30:30
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quote:
Originally posted by Jkeatley
quote:
Originally posted by zerksies
COSM=CRAP
well the "modelling" on my CE-20 maybe be crap, but it sounds bloody ace anyhows, like a pod may not sound like the real thing but i still like it and joy in recording it
i also agree that the CE-20 is good sounding even though it's a COSM |
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Blurillaz
Copper Member
USA
34 Posts |
Posted - 06/10/2009 : 05:07:52
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Ac-2 is more hissy but sounds better 
AC-3 sounds kinda cool with a jazzmaster, but doesnt make it sound like an acoustic. |
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harmoniced
Copper Member
Australia
27 Posts |
Posted - 07/01/2009 : 02:39:53
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Okay guys, I did a gig a week ago and the result was just as I suspected..
Had my pedalboard with AC-3 through line-out to the P.A and the sound was indeed MUCH better and different than a guitar amp. The P.A brought a much more realistic acoustic sound and quality that wasn't there otherwise.
It's the nature of the P.A having a wider frequency range than a guitar amp, so the pedal could do its job properly. I had the 'top' knob at about 10 o'clock and there was still a lot of high end but not in a bad way at all, just clarity, that alone told me how much range I was working with, compared to just treble or presence from an amp. It was pretty convincing, as I was strumming along in soundcheck the rest of the guys looked at the acoustic guitarist, but he was just putting his guitar on, so then they figured it was coming from my end.. |
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jsoi_narciso
Silver Member
Philippines
200 Posts |
Posted - 07/01/2009 : 04:44:08
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quote:
Originally posted by harmoniced
Okay guys, I did a gig a week ago and the result was just as I suspected..
Had my pedalboard with AC-3 through line-out to the P.A and the sound was indeed MUCH better and different than a guitar amp. The P.A brought a much more realistic acoustic sound and quality that wasn't there otherwise.
It's the nature of the P.A having a wider frequency range than a guitar amp, so the pedal could do its job properly. I had the 'top' knob at about 10 o'clock and there was still a lot of high end but not in a bad way at all, just clarity, that alone told me how much range I was working with, compared to just treble or presence from an amp. It was pretty convincing, as I was strumming along in soundcheck the rest of the guys looked at the acoustic guitarist, but he was just putting his guitar on, so then they figured it was coming from my end..
sounds interesting 
does the sound also gives you the acoustic feel when playing? |
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harmoniced
Copper Member
Australia
27 Posts |
Posted - 07/01/2009 : 13:25:25
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quote:
Originally posted by jsoi_narciso
sounds interesting
does the sound also gives you the acoustic feel when playing?
Well there's a certain 'lightness' to the guitar when strumming, really effortless as the sound of the guitar isn't 'electric' anymore.. plus when you slap the strings to mute the guitar, it replicates the quality of the sound hole under the strings of an acoustic very well.. |
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harmoniced
Copper Member
Australia
27 Posts |
Posted - 07/05/2009 : 13:57:16
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One last thing I might add..
The sound can get plastic and thin, so you have to spend some time and tweak it to taste, so far I've found some decent sounds in there with a P.A system, which it was designed for.. |
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Topic |
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Difference between AC-2 and AC-3
