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In Reply to: Re: Thanks for the responses posted by George Mann on January 4, 2007 at 13:30:08:
"Only the finest audio-grade mylars are used in the audio path."Do you have the schematic? If so, tell many how many audio path caps you count, and the schematic designations. I'll gladly do it, but after you.
The schematic also lists the cap type. I'll give you a hint - I have never seen a production tuner that has all film caps in the audio path. I don't have my T-101 anymore, but still have my T-100, and my statement includes it.
Follow Ups:
George;
What your agenda regarding Accuphase is, I can only guess. Short posts, with no technical information, telling everyone how great Accuphase is, seem odd to me. I service, build, and modify my own audio gear, and have a complete RF lab with the best FM stereo generators to align them. I do this as a hobby only.
Here's the list of tantalum caps in the Accuphase T-101 I recommend people replace. The value is given below as size in uF, and cap voltage rating as uF/voltage.
C2 22/16
C16 .1/35
C17 .1/35
C18 10/16
C19 10/16
C20 .22/35
C21 .22/35
C22 .22/35
C23 .22/35
C26 10/16
C27 10/16
I would replace the .1 and .22 with polypropelene or polystyrene film caps, and the 10/16 with black gates, standard if you are cost concious. The whole lot will likely cost under $20.
Any tampering whatsoever with the critically-voiced design will ruin both it's sonics and it's value! If you have nothing but Tantalums in the audio section, either its been modified, or less likely, you own a rare example of the first production run.All vintage Accuphase unit's should have audio-grade mylars in the signal-path, coupled to a polystyrene at the output (depending on its production date).
Anyone looking to correct unauthorized tamperring and modifications should immediatly send their unit to the Accutech service center.
Those with impeccable repair skills should correct their units under the guidance of someone that knows Accuphase units well.
I'm staring at the T-101 service manual listing the parts, and parts listing for all the audio caps say solid tantalum type. Why would Accuphase design the tuner, publish the service manual, and then "switch" all the caps? It was not their first tuner. Are you telling us they never listened to the tuner until after the service manual was printed? The model before this one, the T-100, did have mostly film caps, so it was not a case of not knowing. Your theory that someone modified the tuner and installed tantalum caps is totally absurd.
I'll scan and post the schematic and parts list if anyone would like to see it.Dave, who stated the thread, is telling us he is staring at an open T-101 tuner full of tantalum caps. I guess he has an ultra rare one, too.
BTW, save the dealer speak about "unauthorized tamperring and modifications" for those with no technical understanding and fat wallets. Anyone who does their own design and mods is capable of voicing their own designs to suit their own tastes.
Anyone who is unsatisfied with the sound of their Accuphase should sell it. They have no business modifying such treasures!
By the way, what is the shape and color of the capacitors in question?
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