Quickie + PJCCS - lost bass

[danielehn]

Hi,

I discovered that if I tap one of the tubes when the amplifier is on, it doesn't give the clean ringing noise that the other tube does (makes a scratching sound). I replaced the tube and the sound improved a bit. Still a little lacking in bass but much better drive and sounds over all cleaner.

Much happier now  ;D  ;D

Also finally switched the wiring to the d cells instead of forcing them into the holders.  8)


Could the lack of bass be some how be related to the sensitivity of the power amplifier?

 

[Paul Joppa]

Weak bass would happen if the power amplifier input impedance was low - say, 10K or lower. Or if teh 2.2uF capacitors were replaced with something smaller.

 

[danielehn]

I think it's actually fine now Just a tad thin sounding. But guess it's just as much the fault of the power amplifier (50k impedance).

I'm thinking about building an external tone control unit with 2x ALPS pots
"http://www.eleccircuit.com/wp-content/uploads/2010/06/Passive-tone-control-circuit.jpg"
I would solder decent quality cabling directly on it making it more like a cable with a tone control in the middle.

Is it a crazy idea ? , I don't want to fiddle around inside the quickie

 

[Paul Birkeland]

You would really want to put that in front of the Quickie, not between the Quickie and the power amp.

-PB