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In Reply to: RE: I'm in the final stage of modifying my TU-X1... posted by sherod on September 08, 2016 at 19:59:43
It would be very interesting if you include the Philips AH673 tuner in the bunch. I've compared the Philips AH673 tuner against Sansui TU 717 and Nikko Gamma V tuners the Philips has better resolving power, excellent sound stage width and depth, robust and neutral sounding and have better highs and lows and on top of that it's eerily quiet when it's totally locked in into the FM station.
If a thing's worth doing, it's worth doing well
(Proverb)
Follow Ups:
...I also have an upgraded Philips AH673(silver) that is one of my favorites. It has an issue in the power supply so it has been in the closet for a while. Once I get it running properly it will go back in the rotation amongst my reference tuners. I believe that once you replace the old electrolytic caps in the AH673 and get it aligned, it is definitely a top five tuner regardless of price.
is hard to come by. I feel your pain and good luck in finding one.
BTW, I was just listening to my friend's top of the line Magnum Dynalab tuner Model MD 108T Signature. I was a little disappointed with the over all sound characteristics as it sounded like a digital tuner. Perhaps this has to do with the antennae that he had or lack of one. I don't know I didn't ask. But it sure look very impressive though.
If a thing's worth doing, it's worth doing well
(Proverb)
...and finding replacement parts is even more so. I'm hoping the problem is the IC regulator. I ordered one from Mouser and am hoping it will fix the issue. I want to get the tuner back into rotation and do a one-on-one comparison with my H/K Citation 18.
.
If a thing's worth doing, it's worth doing well
(Proverb)
I got the ic regulator for the power supply on my AH673, but unfortunately the problem was still there. I finally determined that the power supply board had gone through too many cap upgrades with too many damaged traces,etc. so I searched for another AH673 and was fortunate to find a fair cosmestic but working AH6731(black). I got a good deal on it so I just got it in and took the power supply board out and put it into my upgraded 673. Voila! I now have sound. I just replaced all the old caps and diodes in it and it is making beautiful music once again.
On another note, I just completed the refurbishing of my Sansui TU-X1 and although there are many Black gate and Silmic II caps that need a couple of weeks to fully break in, I can tell the sound will be spectacular. I am anticipating this being my new reference tuner, although I could very happily live with the Philips AH673 as my reference. This labor of love has been very fruitful.
Perhaps, I should send you my 673 as well as it needed some refurbishing. The bulbs have been replaced and aligned about 5 years ago, but since then some of the bulbs especially the tuning port are out.
Good for you!
If a thing's worth doing, it's worth doing well
(Proverb)
You can buy LED lights in different colors on Ebay. I have the original bulbs in one tuner and green LED in the other. The LED last a very long time.
I'll look into it.
If a thing's worth doing, it's worth doing well
(Proverb)
If your tuner still has original electrolytic caps in it, you won't believe how much better it will sound with new audio-grade caps in the power supply, mpx and IF section.
upgrade I'll let you know. Hopefully you can help me.
If a thing's worth doing, it's worth doing well
(Proverb)
...that our friend Hoosier, who posts on this forum, provided everyone. This is what I went by when upgrading my tuner. The only difference is that I put expensive Black Gates in the power supply as well as in the other boards, sprinkled with some Elna Silmic II caps.http://www.fmtunerinfo.com/DIY.html#AH673
Edits: 09/17/16
Thanks again.
If a thing's worth doing, it's worth doing well
(Proverb)
I did my first tuner upgrade on my AH673 back in 2014. I was a novice at the time and emailed Hoosier(John Carpenter) who helped me when I got stuck with something through numerous emails. John was very patient with me as I emailed him a lot and probably got on his nerves a time or two. I have learned a lot in the last two years and have gotten much better with a soldering station. This has been a hobby for me, a labor of love...something to keep me occupied in the evenings after a long day at work. It is a fun hobby as it fascinates me when I simply replace a few parts in a tuner or receiver and hear a nice improvement in sound as it breaks in. It is kind of like a therapy for me. I think I read somewhere that John had refurbished at least six of the AH673 tuners so far. John is very prolific with tuners as he's been upgrading quite a few makes and models for many years now. I also upgraded, thanks to John's help and support, my H/K Citation 18, Sansui TU-9900, Sansui TU-717 and most recently my Sansui TU-X1.
breaking in on my kitchen table through my modified Marantz 2270 receiver.
Tuners. Enjoy!!
If a thing's worth doing, it's worth doing well
(Proverb)
Hi, sherod!Is that my Philips 6731 in black that looks so stunning atop the heap?
If so, I am very glad you are enjoying it.
;-)
A question:
I am considering picking up a Sansui TU-X1 in the next five years.
Since I have extensive listening experience with the Philips, could you please elaborate on the sonic differences between the two?
I am hoping a TU-X1 would be my new reference as well,
although I suspect getting my Sony ST-A7B properly restored/upgraded might be a tough challenge to even the TU-X1.Thank you, kind sir!
Edits: 04/01/17
I just now saw this post. It might be your tuner I bought a few months back. I have it modified and need to only get it aligned. As good as the AH673 and Citation 18 tuners are, the Sansui TU-X1, properly modded with new e-caps, etc. just wipes the floor with them. Everything is just better with the TU-X1, but i could be very happy with the other two if that's all I had to listen to.
nt
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