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Topic: Session 500 - Dummy Load on Power Amp |
Nic du Toit
From:
Milnerton, Cape, South Africa
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Posted 6 Jul 2009 10:38 am |
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I would like to run the Pre - amp output (thru a DI -box) to my Recording desk, because I prefer the EQ tailoring. In order to cut out the amp's live speaker sound, I've inserted a dummy 1/4 inch plug into the 'Power amp input'(all on the back panel)......is this acceptable?
..I just want to make sure that I don't do something wrong.
Regards,
Nic |
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Roger Kelly
From:
Bristol,Tennessee
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David Wren
From:
Placerville, California, USA
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Posted 6 Jul 2009 11:18 am
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I believe the line out will still pass signal through the speaker... but the headphone jack will kill the speaker signal.. if I remember right. Not sure about your question about the dummy plug.
_________________
Dave Wren
'96 Carter U12,7X7; 1936 7 string National; Line 6 HX Stomp; Quilter TT-15/TB202; Quilter "Steelaire"; DV Mark "GH 250"with 15" 1501 BW; Boss "Katana" 100 Head w/Line 6 Cab; Telonics VP. |
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Nic du Toit
From:
Milnerton, Cape, South Africa
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Posted 6 Jul 2009 11:19 am
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Hi Roger,
Like I said in my post, I do use the line - out on the back panel. The DI is to cancel a slight hum....cleans up the signal really nice.
By inserting a cable in the 'Line-out' does not kill the live speaker sound. I've plugged an un-wired 1/4 inch jack into the 'Power-Amp' input (on the back panel). So, in theory I reckon the Pre-amp is now disconnected from the power-amp....which is waiting patiently for an input signal (none) from another source.
Hope this makes sense to you.
Regards,
Nic |
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Nic du Toit
From:
Milnerton, Cape, South Africa
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Posted 6 Jul 2009 11:22 am
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| Dave, Tried that.... Apparently it's meant as a headphone monitor, in addition to your amp being live. Could be nice for on-stage scenario, although I've never felt the need for it. |
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Ken Fox
From:
Nashville GA USA
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Posted 6 Jul 2009 11:39 am
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| The dummy jack is the perfect way to cut off the preamp signal to the power amp |
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Nic du Toit
From:
Milnerton, Cape, South Africa
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Posted 6 Jul 2009 12:04 pm
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Thanks, Ken...... I know I've got the circuit diagram here somewhere, but just couldn't lay my hands on it.
Thanks for your input....Appreciated.
Nic |
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John McGuire
From:
Swansea,Illinois, USA
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Posted 7 Jul 2009 6:23 am
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| Couldn't you just unplug the speaker from the speaker jack to silence the speaker? |
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Nic du Toit
From:
Milnerton, Cape, South Africa
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Posted 7 Jul 2009 7:44 am
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Dear John  ,
Without going into a lengthy technical explanation, the short answer is : NO.
Only unplug the speaker when the amp is switched off.
I'm sure Ken Fox could give you a more detailed explanation, but the safest way is to take the power amp totally out of the signal path. |
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Tony Dingus
From:
Kingsport, Tennessee, USA
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Posted 7 Jul 2009 1:15 pm
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Try turning the post gain off. That shouldn't effect the pre amp/line out.
Tony |
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Nic du Toit
From:
Milnerton, Cape, South Africa
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Posted 7 Jul 2009 1:35 pm
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Hi Tony,
The session 500 is really a different beast!
I've originally tried what you suggest...... On both the 'Pre-amp out'(Post EQ), and the 'line-out' (pre- EQ)(Yep.....separate outs...) turning down the main gain kills the output signal.
See the reply from Ken Fox...... I'm using it that way now, and there's peace in the studio!  |
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