Advice for "lifting" bass on 66 preamp

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05-Jun-2019 08:19 PM

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Posts: 19

For years, I've been using my 66 Preamp (with 306 amp) with controls set to flat. The sound suits me. Recently, however, I would like to bump the bass a bit with my small bookshelf speakers. I think this is preferable to using even a small subwoofer. But, I'm confused about how to do this. For example, the 34 and 44 have dedicated bass "lift" controls. The 66 operation, or at least it's nomenclature, is different. I've consulted the manual, but it does not explain how to reasonably increase bass in a way I understand.

Can someone please enlighten me?

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05-Jun-2019 10:18 PM

FBatista

FBatista

Posts: 125

Hi,

instead of fiddling with the 66, consider replacing C2 in the 306 with a 470nF Polyprolylene cylindrical(plenty of room to fit it in).

Appart from a better bass response, you may find interesting the new character to the sound, in the low and midrange (this will depend a lot on the cap brand).

I also have a revised mk2 66 which I use in my main system. I love it and because of that I wouldn't touch because it's in top shape. It's a good piece but also fragile regarding it's build.


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06-Jun-2019 04:58 PM

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Posts: 19

Tanks for the response, and also the suggestion. I will look into it! 

 But as to the original question, if I wanted to lift bass response with these small speakers, what is the setting analog to the 34 or 44?

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09-Jun-2019 11:33 PM

Fabian

Fabian

Posts: 76

I never had a 66, but just from reading the manuals I would conclude that it did not have the bass lift function anymore.

So you are restricted to the tilt function.

Maybe adding a sub is not the worst option. Preamp bass boost will rarely be sufficiently flexible to really produce deeper bass. Mostly it is just about faking our hearing through more bass in the upper registers.

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10-Jun-2019 08:11 AM

EJP

EJP

Posts: 1638

It's strange that they removed this simple feature from the 66. I used it for years, before the subwoofers arrived ;-)
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10-Jun-2019 10:49 PM

Fabian

Fabian

Posts: 76

Honestly, I don't understand it either. The combination of bass lift and tilt make for a wonderful, scalable loudness correction on the 34.

For a person my age, a subwoofer is an effect speaker for cinema systems. But in the absence of bass lift a cheap sub may still be the most efficient way to some extra ooomph.

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