http://www.64kib.com/redmine/http://www.64kib.com/redmine/redmine/favicon.ico?16973035742017-06-06T18:07:08Z64kibEclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=2252017-06-06T18:07:08Zsadospsadosp@gmail.com
<ul></ul><p>Have you connect these with right polarity? I mean ground to ground etc?</p> EclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=2262017-06-06T18:26:44Zfoft
<ul></ul><p>I don't have any tapes! I've not tuned the volume but it seemed pretty loud to me...</p> EclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=2272017-06-06T19:00:48Zndarydary.nir@gmail.com
<ul></ul><p>yes i connected correctly... and the volume still low..</p>
<p>i also notices that when the X12 is connected but nothing is played on the tape you can hear 'noise' from the MIC input</p>
<p>Nir</p> EclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=2282017-06-06T19:15:11Zfoft
<ul></ul><p>Yeah we need a digital filter for that, part of the reason I don't want to make it louder yet:-). I found it pretty load though when I connected an input.</p> EclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=2292017-06-06T19:16:42Zsadospsadosp@gmail.com
<ul></ul><p>Noise is there only when the SIO connector of XC12 is connected?</p> EclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=2312017-06-06T19:52:01Zfoft
<ul><li><strong>Subject</strong> changed from <i>Core 9 - Mic level is low</i> to <i>Core 8 - Mic level is low</i></li></ul> EclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=2442017-06-08T08:18:12Zndarydary.nir@gmail.com
<ul></ul><p>yes Panos, the noise is when SIO of the XC12 is connected</p> EclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=2572017-06-08T19:43:08Zfoft
<ul></ul><p>I think on the final board we should add a passive low pass filter to the ADC inputs. Also are large resistor to pull it down when there is no input connected. Then I can boost the volume without boosting the noise. Of course we can test this by adding some parts to this board...</p> EclaireXL - Bug #42: Core 8 - Mic level is lowhttp://www.64kib.com/redmine/issues/42?journal_id=9142021-09-23T18:48:05Zfoft
<ul></ul><p>This is due to the Atari audio 'mixing' circuit. It has a gain of 5.6x and doesn't really mix - just directly connected...</p>