hi lucaa! and welcome to this fine forum! this is a fine place to advertise something like this. per the forum's home page: "For Sale or Wanted posts are allowed, but is restricted to one post, per

Thanks! The TX6800 does seem to be the likely match for the SX580. I checked it out on the tuner info and stereomono sites. Receiver and tuner both came out in 79. Looks like Pioneer put quite a

I have made a lot of work on the TU-9900, look at my restoration work here: https://www.threshold-lovers.com/2019/02/07/sansui-tu-9900/ and use the bottom right "Translate" button to get it in

Hi Ralph Probably not the easiest to do. Go with your ears: remove the Marantz, replace with the Sony, press on. From what little I could find on the net, both are microprocess controlled. Reprogram

It looks like the TX-6800 tuner is similar. It has the PA3001A detector chip and PA1001A Multiplex chip like the SX580. Both are 3 gangs and 2 ceramic

I just finished hotrodding a Pioneer SX580 receiver for a friend. When I got done recapping it and aligning it, the FM didn't have overly impressive quieting. I thought it may have been due to HD

On Mon, May 3, 2021 at 10:28 PM, Radu Bogdan Dicher wrote: the RN/RL is the mil-spec version of the CMF (which is "global/industrial" type), though I agree - they're likely the exact same resistor

I don't know about your Marantz, but your typical AV receiver tuner has a 3 gang front end, an IF section consisting of two 180 khz filters, and an AM/FM chip that contains all the functions that used

John, I second your choice of Vishay CMF/RN resistors. Have not tried the Beyschlags, though from a quick glance over at Mouser, they seem extremely inexpensive, even in high precision flavor.

Hi NounoursX2, The salient point of the observation was that IMO & based on having done 3 9900s the OEM resistors were all to often out of spec. The power supply was particularly problematic, heat

I agree with Bob. Cheers,Ed SfmiP

No surprise here. A recaped & aligned ST-J75 (the ST-J60's big brother) is my long-term keeper of all the tuners I've owned over the past 30yr. Superbly quiet background and great SQ. The 60 is likely

I'm sorry if tis is not the right place to... But for tuner's lovers... -> One of the best TUNER FM/AM (very musical!) ever built, despite it being almost unknown. MADE IN GERMANY. In this test .. vs

Check the input/output sensitivity on both . The Sony's output is 750mV the Marantz input is 130mV so I would say the Sony will be playing loud . I read you can upgrade the op-amp in Sony for better

An obvious case of specs/numbers don’t mean everything. The parts in your Sony are probably a much better grade, too.

Hi Istvan, The added power supply provides balanced power rails, both + & - for the Opamp, which the factory PS does not. I believe that OpAmps operated in this fashion sound better than running

Hi, I am an avid lurker to fm tuner info traffic, and had to ask about a recent tuner "experience". I found myself lucky enough to have a Sony stj60 spare so I hooked it up to my home theater system

Hi, I read in the Sansui TU-9900 section of FMTunerInfo.com that "The factory resistors should be construed as much less than optimal, in a lot of performance areas. Those KOA/Speer SP series are

Thank you for gently reiterating this rule. I’ve been a lurker for almost 20 years, enjoy ad appreciate all that is posted. Keeping it non-divisive is the way to go. Thanks for how you moderate!

Thanks, John, The next update will cover that. Why did you make a separate power supply for the output buffer with transformer? After recapping a heard a strange stereo just at one classical music