UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Radio sound quality

mhennessy · 24th Apr 2017, 3:56 pm

I posted a clearer version of the schematic of my N210 here: https://www.vintage-radio.net/forum/...554#post371554

The proposed mods would remove all EQ, leaving you with the "raw" response of the loudspeaker+cabinet - which would be severely lacking in bass and perhaps treble too. Some EQ is necessary.

Earlier I described how it actually worked quite well with a "broadcast" that wasn't Optimod'd to within an inch of its life. The problem is not so much the design; it's modern music and broadcasts.

An attenuator ahead of the volume/tone control PCB would preserve the original design intent while rendering the set compatible with today's broadcasts. Alternatively, reducing the gain of the power amp - subject to loop stability - would work.

24th Apr 2017, 3:56 pm	#48
mhennessy Dekatron Join Date: Jul 2007 Location: Evesham, Worcestershire, UK. Posts: 4,244	Re: Radio sound quality - some measurements I posted a clearer version of the schematic of my N210 here: https://www.vintage-radio.net/forum/...554#post371554 The proposed mods would remove all EQ, leaving you with the "raw" response of the loudspeaker+cabinet - which would be severely lacking in bass and perhaps treble too. Some EQ is necessary. Earlier I described how it actually worked quite well with a "broadcast" that wasn't Optimod'd to within an inch of its life. The problem is not so much the design; it's modern music and broadcasts. An attenuator ahead of the volume/tone control PCB would preserve the original design intent while rendering the set compatible with today's broadcasts. Alternatively, reducing the gain of the power amp - subject to loop stability - would work.