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dani
Copper Member
Singapore
12 Posts |
 Posted - 03/15/2009 : 13:26:13
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just scored a dc-2 and it definitely sound more organic compared to my dc-3. problem is, the dc-2 clips when used in conjunction with my humbucker-equipped guitars. never had this problem with the dc-3.
that said, is there anything i can do to increase the headroom on the dc-2? any modders or mods out there that will/can alleviate the clipping?
btw, folks with a dc-2 how's the headroom on yours?
thanks,
dani |
Edited by - dani on 03/15/2009 15:00:21 |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 03/15/2009 : 15:45:23
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Hi dani and welcome!
The DC-2 and DC-3 are different beasts (DC-2 is completely analogue, and DC-3 has a digital core), so experience with one unfortunately won't be an indicator of experience with the other...
That being said, the DC-2 circuit should have enough headroom to accomodate humbuckers - it's a pretty standard approach that Boss used for years. There is no mod to increase the headroom.
So... clipping is most often caused by low DC voltage - how good is your power supply? Are you using a known good battery or known good Boss PSA power supply? |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 03/15/2009 : 15:49:12
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Hi dani
Welcome to the forum from Australia.
Regards Dr. Bob  |
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dani
Copper Member
Singapore
12 Posts |
Posted - 03/15/2009 : 15:52:10
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thanks for the welcome laurie.
i am using a bbe supacharger on 9v for the dc-2. of course, digital will sound more pristine compared to analog but there should be no reason for the dc-2 to clip while using humbuckers unless there is something i am doing wrong?
thanks,
dani
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dani
Copper Member
Singapore
12 Posts |
Posted - 03/15/2009 : 15:53:11
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quote:
Originally posted by Dr. Bob
Hi dani
Welcome to the forum from Australia.
Regards Dr. Bob
thanks for the welcome doc! |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 03/15/2009 : 16:14:00
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quote:
Originally posted by dani
thanks for the welcome laurie.
i am using a bbe supacharger on 9v for the dc-2. of course, digital will sound more pristine compared to analog but there should be no reason for the dc-2 to clip while using humbuckers unless there is something i am doing wrong?
thanks,
dani
Hi dani! Do you have some way of checking the DC voltage going in to the DC-2? Or maybe if you can a fresh, known good battery and try that? Just want to eliminate that first (it's the most obvious). |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 03/15/2009 : 16:24:07
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Hi dani
Forgot top ask you, if your humbuckers are active or passive.
And just while we're at it, which brand & make are they?
was there any possibility that someone may have tweaked/played with, the trim pots inside your DC-2?
Regards Dr. Bob |
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dani
Copper Member
Singapore
12 Posts |
Posted - 03/15/2009 : 17:15:58
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[/quote]
Hi dani! Do you have some way of checking the DC voltage going in to the DC-2? Or maybe if you can a fresh, known good battery and try that? Just want to eliminate that first (it's the most obvious).
[/quote]
i can try a battery and post the findings. |
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dani
Copper Member
Singapore
12 Posts |
Posted - 03/15/2009 : 17:18:03
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quote:
Originally posted by Dr. Bob
Hi dani
Forgot top ask you, if your humbuckers are active or passive.
And just while we're at it, which brand & make are they?
was there any possibility that someone may have tweaked/played with, the trim pots inside your DC-2?
Regards Dr. Bob
mostly passives around the 10k to 14k resistance.
there's a chance someone tweak the pots in there since i got it used. is there a way to reset it? |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 03/15/2009 : 17:41:10
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quote:
Originally posted by dani
there's a chance someone tweak the pots in there since i got it used. is there a way to reset it?
The trimpots can be reset... but needs special tools, and we don't have the service notes for a DC-2 - so it's a bit of guesswork, but not impossible. What the trim pots set is the "BBD operating point" - this will definitely cause clipping if it's wrong. That's the second most likely cause after the power supply.
Can youi confirm - this pedal is new to you and it has had the problem the entire time you've had it?
Here is what we are talking about with the trimpots:
http://members.shaw.ca/lauriepedals/CE2trimpot
If you follow the link to the service notes you will see the clipping waveforms that occur when the trimpot is improperly set. |
Edited by - Laurie on 03/15/2009 17:45:10 |
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dani
Copper Member
Singapore
12 Posts |
Posted - 03/15/2009 : 18:02:18
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| yes. i bought it used and it has been clipping with humbuckers when i got it. perfectly fine with single coils and even p90s. |
Edited by - dani on 03/15/2009 18:03:58 |
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svengali
Bronze Member
Australia
111 Posts |
Posted - 03/17/2009 : 04:16:35
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i once had the same problem...worked fine for single coils...clipped when used with humbuckers ( ph 1)
some fool had changed one of the electrolytic polarised caps for a green poly bipolar.
what an utter fool.
anyway, i just fitted the correct polarised electrolytic and fixed it.
the thing is it was an easy fix as i had another ph 1 close by.. |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 03/17/2009 : 04:18:42
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quote:
Originally posted by dani
i can try a battery and post the findings.
How did the test go? |
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dani
Copper Member
Singapore
12 Posts |
Posted - 03/18/2009 : 16:50:36
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quote:
Originally posted by Laurie
quote:
Originally posted by dani
i can try a battery and post the findings.
How did the test go?
no good. guess its not the power supply. |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 03/18/2009 : 17:30:30
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| OK, so it probably is the trim pots. Do you have access to an oscilloscope? |
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dani
Copper Member
Singapore
12 Posts |
Posted - 03/18/2009 : 17:35:23
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quote:
Originally posted by Laurie
OK, so it probably is the trim pots. Do you have access to an oscilloscope?
i can try asking around. what do i have to look out for? |
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Topic |
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dc-2 dimension c headroom
