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Blue Angel
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Joined: 15 Aug 2005
Posts: 4308
Location: Cape Town, South Africa
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PostPosted: Wed Nov 04, 2009 5:27 pm    Post subject: Any Idea What's happening here? Reply with quote report post

Hi Gents

I have a Leak Troughline 11 valve tuner which is in A1 condition and which I can listen to through any type of pre or amplifier - s/s or valve, without any problems until now.

I recently got this little Dynaco valve integrated SCA-35 amp and tried to lay the Leak by hooking it up to the Dyna's "RADIO" input and it sounds just all mud. Besides sounding bad and fuzzy, I also needed to crank the volume up way past 12 to get any reasonable volume.

When I started using the SCA-35, I virtually 'ran it in' continuously for days by using a s/s tuner and using it this way, the Dyna sounds superb.

I also tried the Leak into the Dyna's "SPARE" input but this doesn't work either.

Do you have any idea why the Dynaco doesn't like the Leak?

Thanks

blue angel
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bauzace50
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Joined: 11 Jun 2005
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Location: Guayama, Puerto Rico
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PostPosted: Thu Nov 05, 2009 7:31 am    Post subject: Reply with quote report post

Hello Blue Angel!

Maybe the impedances are off on both tuner and amplifier, and they are a mismatch? Age may have affected both impedances, or maybe they are specified originally wrong for each other? A glance at their spec sheets may begin to clarify things.
Best wishes,
b50
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Blue Angel
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Joined: 15 Aug 2005
Posts: 4308
Location: Cape Town, South Africa
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PostPosted: Thu Nov 05, 2009 10:01 am    Post subject: Reply with quote report post

Thanks for your kind attentions, b50. I think you're on the right track here. As much as I'd like to put the Dynaco into service, renewing essentials like capacitors and drifted out of spec resistors is unavoidable. I was just surprised the SCA-35 works so well with the little s/s portable tuner but not the Leak Troughline 11.

I'll just have to hold my horses until everything is up to snuff again.

Regards

ba
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