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Topic: DPC-1400/Profex II Help Mike Brown |
Jim Gaines
From:
Independence, Kentucky, USA
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Posted 27 Feb 2005 11:50 am |
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Gentlemen,
Many years ago I purchased a video from Jeff Neuman pertaining to the Profex II. It described 2 possible hook-ups dealing with the DPC-750, and using 2 Nashville 400's. With the DPC-750 being new technology, and concerned with reliability at that time, I elected to go with the 2 Nashville 400's. This hook-up gave me many years of reliable service.
After a period of time I decided to upgrade to the DPC-1400 Amp, along with the Profex II. With this lash-up I have been very satisfied, and now I'm in hog heaven.
I do have a slight problem however. I also use a Goodrich Steel Driver III, which I love. With the Nashville 400's I could and would run the Goodrich level on both tone, and fuzz at 10 with no problem. With the DPC and ProfexII hook-up, if I use the same settings on the Goodrich Steel Driver III there seems to be a clip or distortion at certain times. To get rid of the clip or distortion I have to turn the level on the tone side of the Groodrich down to 3. Of course by doing this I loose sustain, tone, volume etc. I believe the Goodrich may be the culprit.
Question. Does anyone use this lash-up and most importantly what settings would you suggest on the ProfexII (input output), and the DPC 1400 to possibly eliminate the clipping/distortion phenomenon. I believe the the Goodrich is the issue but was wondering if there were any possible settings on the DPC Amp and the Profex II to elimiate this problem? I would like to keep the Goodrich Steel Driver II tone level at 10 and compensate settings on the DPC and Profex II.
Any Ideas? I also use a Goodrich LDR light Pedal.
Thanks for your time and hope to solve this frustrating problem. |
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Bobby Boggs
From:
Upstate SC.
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Posted 27 Feb 2005 4:17 pm
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| The first thought that comes to my mind would be to turn the Global input down on the Profex II.As for how much you'll have to be the judge of that....bb [This message was edited by Bobby Boggs on 27 February 2005 at 04:19 PM.] |
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David Higginbotham
From:
Lake Charles, Louisiana, USA
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Posted 27 Feb 2005 4:57 pm
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I agree with Bobby. Sounds like too high of an input signal to the profex causing it to clip. I would simply turn down the input level knob to about 12 o'clock or less. A steel driver has a pretty hot signal when opened up all the way. Think back on the Nashville's. Where were you putting your pregain level at? Probably 3 or 4 which is why you were ok there. A preamp in front of another preamp will tend to clip if the levels are not acceptable. As for the output on the profex to the power amp and the output to the speakers, that should cause no problem so long as the speakers are not overloaded. Just my two cents worth!
Dave
------------------
BMI S-12 8&5, Webb 614-E, Nashville 112
[This message was edited by David Higginbotham on 27 February 2005 at 05:00 PM.] |
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Paddy Long
From:
Christchurch, New Zealand
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Posted 28 Feb 2005 11:56 am
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Speaking of output levels on the profex II, where do you set the output knob on the back ?? Do you run it full on (10) and then control things from the output knob on the front ?? --- and what about the output level on the DPC ? Do you run those full on as well ? Just interested in how other people set theirs. thanks
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Jim Gaines
From:
Independence, Kentucky, USA
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Posted 28 Feb 2005 2:46 pm
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Dave, Bobby,
I'll give it a try. I'm going to give Goodrich a call tomorrow and see what Ollie says. I called Mike Brown today and he was quiet helpful, and his suggustions were similar to your's. If you get any other ideas or if some has the same settup please let me know.
Thank you very much for all your help,
Jim Gaines |
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Jim Gaines
From:
Independence, Kentucky, USA
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Posted 28 Feb 2005 2:49 pm
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Paddy,
There seem to be different approaches to this setup. When I find out I'll let you know. How do you have your Profex and DPS setup?
Keep in touch,
Jim Gaines |
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Paddy Long
From:
Christchurch, New Zealand
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Posted 28 Feb 2005 7:17 pm
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Hi Jim, I usually run the output on the Profex full on (10) and both channels on the DPC750 about 8 ! I got to this by trial and error and it has always sounded great, but I was wondering how other guys set theirs.
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Jim Gaines
From:
Independence, Kentucky, USA
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Posted 6 Mar 2005 8:19 am
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| Please Bump |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 8 Mar 2005 11:28 am
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| My first question is, "what is a lash up?". |
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Jim Gaines
From:
Independence, Kentucky, USA
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Posted 8 Mar 2005 1:06 pm
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Mike,
Thanks for the response. I quess what I meant was; "lash-up" means the same as "hook-up". In other words, the Profex II hooked up to the DPC-1400 power amp.
Jim Gaines |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 10 Mar 2005 7:18 am
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The input sensitivity of the DPC 1400X is 1.4 volts. Apparently, the Steel Driver produces more than 1.4 volts and is overdriving the input of the DPC 1400X amp. If the DDT led is activated on the DPC, this indicates that DDT is occurring. If DDT is disabled, this indicates that the audio signal is clipping. Check this when you hit those maximum levels.
Do you know how much signal the Steel Driver can accept at its input? And does it reproduce that same signal at its output? In other words, what goes in, goes out?
Or, simply take the Steel Driver out of the signal path, that will tell you whether it is the culprit. |
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