On Thu, Feb 21, 2008 at 1:47 AM, Ed Sieb <[EMAIL PROTECTED]> wrote: > "With the stock iron, there was a noticeable improvement in the low end > response. Further improvement can only be obtained by installing a different > modulation transformer.
Yep, not unlike the Valiant and a few others. They can be made to sound 'better', but only to the limit of the iron. My big xmtr was instead limited mainly by couple caps, resistors, and so on. Done about halfway through the production run to limit response and increase punch through the noise. Simple changes back to something close to earlier values improved audio considerably, without dirtying up the signal. An OT once told me with respect to audio that anytime you add 'more' stages, processing, etc, you also introduce more distortion. And somewhere along the way I picked up the term 'outboard distortion' to describe outboard processing. There are more than a few folks with artificially-enhanced voice characteristics (added bass comes to mind) resulting in audio that pops up and down the band 10+ kc/s either side. Not sure it it's a result of where they added it inline or more a product of bad set up. It would make sense that if you don't address shortcomings in the rig like components or iron, and then run through them to some degree, you'd be asking for trouble. There are also some stations out there with custom audio that sound fabulous, and have clean signals despite being a bit wide in the eyes of some. So it can obviously be done right. No doubt has a lot to do with what you're trying to push the outboard audio through. The old saying 'you can't polish a turd' comes to mind... ~ Todd, KA1KAQ ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
