[Elecraft] Yamaha CM500

[riese-k3djc at juno.com]

 boy that idea takes you back,, some surplus (ww2) receivers used dc on
the filaments
so when you ran them on ac there was residual hum and a series cap in the
speaker lead
took care of that
bob K3DJC

rb
On Sat, 20 Nov 2010 09:35:01 -0800 Jim Brown <jim at audiosystemsgroup.com>
writes:
> On 11/19/2010 6:23 PM, Luis V. Romero wrote:
> > These Orions are really bassy. 
> 
> I understand.  Makes you appreciate the K3 even more -- no need for 
> the 
> W2IHY unit, or for external EQ.
> 
> Take a look at the simple circuit that Joe, W4TV,  posted yesterday. 
> 
> It's a very old broadcast engineering technique that we both 
> remembered. 
> I've used the series capacitor when I wanted to use other pro mics 
> with 
> ham rigs that lacked mic EQ, and it worked quite well.  You'll see 
> that 
> in the Ham Interfacing tutorial that I posted to my website several 
> 
> years ago. The cap is for LF rolloff, not DC blocking (which is not 
> 
> needed).  The only trick is finding the small cap needed to fit 
> inside 
> the connector.
> 
> 73, Jim K9YC
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