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

Luxman1050 · 9th Dec 2019, 3:31 pm

I agree with everyone definitely need to change the caps having done a few QC2 models myself it will make all the difference if memory serves me right I think the bass caps are 0.0047uf if you put in 0.047uf you'll get no bass response. Also you will need an adapter for a deck so you get the right output for type of deck used otherwise probably need to turn it up full volume just to hear the vinyl your playing. Easy way to make sure things are working is just plug in a CD player to TO and 1 on rear rcas you should get full volume and all controls filters etc should work if not as everybody said change out caps not all at once as they say change a few check etc. The resistors even though high I found don't tend to cause many probs although If your gonna do a refurb change it all. TDK 2 watt resistors are quite nice bit pricey but produce nice warm sound and bring out the bass. Bit big but can fit them in.
The voltage reading as previously said is fine I usually get 360 to 370 with GZ32.

Hope helps.

9th Dec 2019, 3:31 pm	#23
Luxman1050 Octode Join Date: Apr 2019 Location: Margate, Kent, UK. Posts: 1,728	Re: Quad 11 Problem. I agree with everyone definitely need to change the caps having done a few QC2 models myself it will make all the difference if memory serves me right I think the bass caps are 0.0047uf if you put in 0.047uf you'll get no bass response. Also you will need an adapter for a deck so you get the right output for type of deck used otherwise probably need to turn it up full volume just to hear the vinyl your playing. Easy way to make sure things are working is just plug in a CD player to TO and 1 on rear rcas you should get full volume and all controls filters etc should work if not as everybody said change out caps not all at once as they say change a few check etc. The resistors even though high I found don't tend to cause many probs although If your gonna do a refurb change it all. TDK 2 watt resistors are quite nice bit pricey but produce nice warm sound and bring out the bass. Bit big but can fit them in. The voltage reading as previously said is fine I usually get 360 to 370 with GZ32. Hope helps.