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Re: OT - HVAC - new Gas Furnace AC
Michael Sloan
I don't know where you are located, but I can offer the
following: (keeping in mind that free advice is worth what you pay
for it) It is my understanding that "high efficiency" furnaces are higher
maintenance and lower reliability, which offsets the savings
through higher efficiency. Try to determine annual maintenance
costs before you buy. There are a variety of warranties available for different brands. . Try to get a handle on parts availability if it breaks. A 20% increase seems steep for one year...
On 5/10/2021 5:41 PM, newaag via
groups.io wrote:
Anyone have good or bad experiences to share with newer installs of forced air gas heaters with AC? Mine unit works, but is 33 years plus old, so replacing.
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Re: FS / Free, local pickup only
junkjer
Hi- I'm poking around hoping to find a Fisher R-200-B. Doesn't seem to be a common item but thought I'd ask. Good luck with the spring cleaning.
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OT - HVAC - new Gas Furnace AC
newaag
Anyone have good or bad experiences to share with newer installs of forced air gas heaters with AC? Mine unit works, but is 33 years plus old, so replacing.
Boy has inflation hit these this year - the sales guy is telling me his costs are up 20% - is this true? Bob
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Re: FS / Free, local pickup only
newaag
Thanks Jim.
I may be able to ship stuff later, but for now just clearing thinks to make room, which means not all stuff is perfectly aligned, but it all works. If not, won't sell it - it's free or getting tossed. Bob
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Re: Looking for info on the "Amphenol Stereo Commander"
newaag
looks to have all the right stuff - never heard of it though. I wonder if it's solid state?
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Re: FS / Free, local pickup only
Jim Hart
I bought a Sansui receiver from Bob recently. He knows his stuff and the unit is pristine. I was most satisfied with the purchase and highly recommended him. R/ Jim
From: FMtuners@groups.io <FMtuners@groups.io> on behalf of newaag via groups.io <newaag@...>
Sent: Thursday, May 6, 2021 12:43 PM To: FMtuners@groups.io <FMtuners@groups.io> Subject: [FMtuners] FS / Free, local pickup only Hi All;
If anyone is willing to pickup gear locally, I am currently doing a minor clean of the basement, and would be willing to sell, or even give away items for less than 1/2 what you normally would pay on Ebay or elsewhere. I am in the Albany NY area. The list of stuff includes many top rated tube solid state tuners, a few big receivers, integrated amps, solid state and tube power amps etc. From Fisher, Sherwood, Heathkit, Dynaco, Pioneer, Sansui, Kenwood, Hafler, Sony Rotel, Yamaha, Onkyo, etc. Plus one or two alignment generators that are extra. We are getting a new heating system and I need to make some room. A have a pair of Magnepan 1.6QR that I would like to sell as well. Please don't ask for list, tell me what you are looking for. But this is pickup only, 12065 zip. No shipping. All the stuff is working, much of it already aligned, some with mods, etc. Free stuff are things that normally go for less than $50-100. Bob
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Harmon Kardon TU911 and TU911A
Hi. Pleasae note that it seems the difference between 911 and 911A, is that the former is FM only and the latter AM/FM. In the notes on tuners on FMtuners website, the difference is thought to be that the 911A is an upgrade. I don't think it is as such. Rich
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FS / Free, local pickup only
newaag
Hi All;
If anyone is willing to pickup gear locally, I am currently doing a minor clean of the basement, and would be willing to sell, or even give away items for less than 1/2 what you normally would pay on Ebay or elsewhere. I am in the Albany NY area. The list of stuff includes many top rated tube solid state tuners, a few big receivers, integrated amps, solid state and tube power amps etc. From Fisher, Sherwood, Heathkit, Dynaco, Pioneer, Sansui, Kenwood, Hafler, Sony Rotel, Yamaha, Onkyo, etc. Plus one or two alignment generators that are extra. We are getting a new heating system and I need to make some room. A have a pair of Magnepan 1.6QR that I would like to sell as well. Please don't ask for list, tell me what you are looking for. But this is pickup only, 12065 zip. No shipping. All the stuff is working, much of it already aligned, some with mods, etc. Free stuff are things that normally go for less than $50-100. Bob
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Re: KS Kucke T-22 selected TUNER FM/AM
#file-notice
Paul
Hello Lucaa, must admit I didn't know this tuner or its twin, so I googled it and found that does have some good points..
https://translate.google.com/translate?hl=en&sl=de&u=https://www.hifi-wiki.de/index.php/K%25C3%25BCcke_KS_T-22&prev=search&pto=aue Then I found a picture of the build quality. 
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Re: KS Kucke T-22 selected TUNER FM/AM
#file-notice
hi lucaa! and welcome to this fine forum!
On Mon, May 3, 2021 at 09:00 AM, Lucaa d.N. wrote:
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Re: Old tuners, modern equipment?
bill koski
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 bit of effort in making an affordable tuner with impressive performance. Seems to be a great bang for the buck tuner. I might have to look for a bargain one to play with for myself.
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Re: Sansui TU-9900 Resistors upgrade
Nounours Nounours <nounours18200@...>
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 English.
I have changed all the resistors in the Power Supply: I had used the TAKMAN Metal resistors and made all the other upgrades recommended by FMTunerinfo on this P.S. board. The resistors on the FM board F-2524 have also been replaced by TAKMAN Metal resistors, known to be excellent. My question relates more on the SQ difference between Carbon resistors and Metal Film resistors: what kind to you prefer in the P.S. locations and in the Signal locations ? @John Carpanini: I see on your photos that you have also changed the TA7136P operational amps: this is an upgrade that I still have to do. I already have designed and received the PCB adaptors , exactly the same than yours with a place for a capacitor (47µF probably). Have you used the OPA604 or another Opamp ? and more important are there any surrouding parts that need to be replaced in order to use perform this opamp upgrade ?
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Re: Old tuners, modern equipment?
j
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 the processor? my official language is solder. Change, listen, enjoy, find a new home for the Marantz. Maybe the last option would be to send the unit back to Marantz, with documentation of your grief. Pricey! May it be in your power to make it a good day: John Isles
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Re: Old tuners, modern equipment?
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 filters.
toggle quoted messageShow quoted text
Don ==============================================================================
On Tue, May 4, 2021 at 09:32 AM, bill koski wrote:
BTW does anyone know if Pioneer had a tuner that was essentially the same as what was in the SX 580?
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Re: Old tuners, modern equipment?
bill koski
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 channel noise. It has 2 ceramic filters I pulled the one on the input and tested it and it had a -3db BW of 300 KHz. Probably was nominally a 280KHz? I matched a pair of 180KHz filters to both have the same center frequency (they were about 10.745) and measured BW of 200KHz. I only replace the input one and tried it and now the background was near dead quiet. So I didn't even bother changing the 2nd filter.
I hooked it into my main system like a tuner using the tape outs. I have a Marantz 10B in the system to compare it to. The Pioneer sounded ridiculously good! No it didn't sound AS good but it has great separation with a good sound stage. It sounded a bit dryer than the 10B and a little less dynamic. Vocals didn't pop quite as much. But we're talking about a lower end Pioneer vs what is arguably one of the best tuners ever made (I know, your mileage may vary!) So yes old tuners can sound surprisingly good! In Chicago we are blessed with at least 3 stations that aren't totally over processed. WXRT (rock) WFMT (classical) and WDCB (jazz/blues) With a good signal it's amazing how good FM CAN sound. BTW does anyone know if Pioneer had a tuner that was essentially the same as what was in the SX 580?
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Re: Sansui TU-9900 Resistors upgrade
John Carpanini
On Mon, May 3, 2021 at 10:28 PM, Radu Bogdan Dicher wrote:
Hi Radu, Not to belabor the issue but they are indeed identical except for the marking. That fact is even documented on the CMF Industrial datasheet "Notes" section, quoted below: " (Except for marking, the Industrial and Military versions are exactly the same)." Regards JohnC
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Re: Old tuners, modern equipment?
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 to be performed by three separate chips. The detector is simpler and is not as low in distortion as older tuners. It is no wonder that you might prefer a better designed tuner with lower distortion and better separation.
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Re: Sansui TU-9900 Resistors upgrade
Radu Bogdan Dicher
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. Technically, it seems 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 inside with different scribbles on them. When "mil-spec'd," they seem to derate them to lower handled power at a given temperature (though not on the same sheet, so I'm not very sure what that's about). I did notice though, at least at Mouser, I tend to find the RN cheaper than the CMF for a given value. They have the added nuisance of the weird value markings, but once you get used to the aspect, no biggie. The CMFs typically have very normal, spelled out values with no coding whatsoever, so that's just a bit easier on the eyes. I personally prefer any alphanumeric markings to color coding any day of the week. Radu.
On Mon, May 3, 2021 at 5:57 PM John Carpanini <jacarp@...> wrote: Hi NounoursX2,
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Re: Sansui TU-9900 Resistors upgrade
John Carpanini
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 maybe??. The KOA SPR series work very well in that application, are very quiet and were designed to be used in a power circuit. The fact that they are also pretty good in the signal path was just the cherry on top. When using metal films, & given my druthers i try to use the Vishay/Dale CMF series in the signal path. These are literally MilSpec parts without the MilSpec markings. Lately I've been playing with the Vishay Beyschlag MBA/SMA 0204, MBB/SMA 0207, MBE/SMA 0414 - Professional series which seem quite nice. I feel that there is a slight difference in SQ between the CF & MF resistors. If you want to see some pictures, Look here: https://groups.io/g/FMtuners/photosearch?p=created%2C%2C%2C20%2C2%2C0%2C0&q=tu+9900 There's some good shots of the PS and the rest of the boards. Have Fun, Regards JohnC
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Re: Ed Hanlon propriety
Else
I agree with Bob.
Cheers,Ed SfmiP
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