Used condition. Has some sticker residu on top. But can be removed. Overal good condition. Not tested with speakers.
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Tuner Reviews D-G. Tuners are listed alphabetically by manufacturer and in alphabetical and numerical sequence by model number. Please see the On-Deck Circle for tuners that we know very little about or that we're not sure merit a writeup.
We have posted updated eBay sale price data in this section through December, ; data for "as is" or damaged tuners, or otherwise unrepresentative auctions, may be excluded. Day-Sequerra search eBay See Sequerra. We're tracking eBay sale prices for a few of them in the On-Deck Circle. The tuner IC supplies everything between the IF and audio stages.
The audio stage itself is formed in discrete components, with no buffer and a discretely formed low-pass filter. The tuner is bass-shy and the top end is reasonable, very similar to the Philips FT in sonic character. There is no bottom panel in the chassis, but board removal is very easy. A recap helps, and rebuilding the LPF in the audio section with film caps also improves the sound quality.
All in all, not a bad tuner, but you can get a lot more bang for your buck exploring other Denon tuners like the TU The may seem out of place but when you pull the cover it's apparent that the is just a downsized Although the TURD is the next model above the unremarkable TU, don't assume it inherited the limitations of the Aside from its RDS display, the includes 40 presets that maintain all the specific settings invoked when the preset was saved.
The chassis is typical Denon with an easily removable main board, and no bottom panel. A post-detection filter in the composite signal path is added on European and UK models of the With a manufacture date, Denon finally got around to adequately heat sinking the two regulators in the power supply long overdue and there is a preponderance of surface mount components on the main board, which includes the audio buffer. All the signal path 'lytics are through-hole and easily replaced. Stock, the sounds as good as, if not better than, a TU The bass is rolled off but easily addressed with larger caps in the audio output -- 3.
After both are recapped, the wins in both selectivity and audio. It meets the goal: it sounds incredible for a little tuner. Those inclined to pop the lid will be horrified, because there's very little there. Two filters, who knows what on the number of gangs. It has one of those micro-miniature RF front ends that is soldered shut, so I cannot easily tell how many gangs, butI would guess 3 or 4 at most.
But forget all that - it easily beats the pants off many of my other 'better' tuners sound-wise, but is NOT a DX machine. Strong signals above ish dBf are incredible-sounding, though. I can't explain it, I just shut up and listen. The tuner's biggest failing is no blend or MPX filter to remove noise on weak stations. It goes to mono on its own, but stays in stereo to the bitter end, with noise, and without a filter or a way to get mono, it makes very weak stations unlistenable for me. Many people will have a mono switch on their preamp, which will do the trick and make it noise-free.
There is a muting defeat switch, but strangely enough, unlike many other units, it does NOT also go to mono. Our panelist Jim says he has tried several TUs and the sensitivity of each example was quite poor. See how Jim ranked one of these TUs in comparison to many top tuners on our Shootouts page.
Our contributor Dave N. From the LA out, the circuit appears to be very close if not identical to the 's. All my comments in the TURD review regarding board layout and morphology of the also apply to the Of particular note is that there are functions built into the remote that are not available on the front panel of the , including preset scan, RF attenuation, and a 4-step front panel dimmer just to name a few.
In OEM condition, the unit is very quiet, with good sensitivity, and rolled off in the bass, which should be expected considering it's the same circuit as the Separation is good to excellent, presenting a wide soundstage with good depth. Overall, the TURD is a much underappreciated model. If anyone out there has a schematic or service manual, or knows where one is available, please let me know. I'd really like to get my hands on the info. Inside, our panelist Ray reports that it has a varactor-tuned stage feeding a dual-gate RF amp feeding a double-tuned stage.
There are two varactor-tuned circuits in the L. It shares many of the TU's attributes in both the RF-in and audio-out circuitry. It also features a post-detector low-pass filter anti-birdie, per Denon. Compounding this confusion was the FM de-emphasis contained within. I didn't intend to mod this fine unit but since I had to pull the PC board for the de-emphasis I did some audio and power supply cap upgrades.
In this it can be called a 'TU Lite. Subjectively, it also quiets quickly and well. The LED string signal-strength meter is nicely calibrated. Overall, one nice tuner, IMHO. Both have very accurate de-emph response as measured. The differences may be due to the Sony's old and cheap audio electrolytics, and that will soon change I still think the 75 is on the dry side. To me, it seems to lose some hall ambiance. There are two stations out of Louisville, one classical and one AAA, which broadcast about three hours each of live programs per week.
They both use the same performance space, and I have been an attendee at that venue on many occasions, so I know what it should sound like.
The and the are closer to that acoustic signature. The bass on the goes deeper than both, but doesn't have the stage width. All in all these three are very, very close, and it absolutely comes down to some very small personal preferences. Bottom line, the mods were effective and now the ST-J75 deserves a seat upon the topmost shelf. Those mods consisted of OPAs in place of NJMs, upgrade of all signal passing caps from detector out to the output jacks, and a few power supply cap upgrades.
I did all changes at once and did not try to evaluate each change, and honestly there was not all that much room for improvement, anyway. But despite its position at the bottom of the line, the TU had excellent published specs, particularly for sensitivity and signal-to-noise ratio. It had some sort of servo-lock circuit and what Denon's marketing materials called a "high-performance front end.
It is solidly built and compares favorably with its sibling, the TU, for audio quality. The TU tunes in 0. It has the electronic equivalent of 4 gangs and 2 ceramic filters there's a space on the board for a third filter, but it's filled with a cap instead.
Sensitivity is good and selectivity is decent considering that there are only two filters. Stereophile considered the TU to be one of the cleanest-sounding tuners of its era, with the best stereo separation available at the time. Our panelist Ray gives us the definitive report: "The TU was a mid-eighties product that seemed to be market targeted for the 'upscale' end.
It's stylish in black or light and came with nice but faux wood cheek plates in a low, wide-profile package. Too wide to fit in a standard rack unless the cheeks are removed.
One feature deserving special mention is the 'SSS' or super searcher system. This was a very novel circuit designed to reduce front end intermodulation by strong stations in close frequency proximity to one the user wants to hear. Other tuners have used added gangs and reduced sensitivity to sharply tune 'in' the desired signal. SSS adds separately tuned gangs to tune 'out' the interfering signal. It's a bit fiddly to use but it's definitely effective. I once wanted to listen to a local high school football game being broadcast from a 50 mile distant, 60 KW, This is normally blocked by an 8 mile distant 51 KW, The antenna is a rotating Winegard Use of the TU's 'SSS' allowed clean and clear reception where none other of my flock were acceptable.
Alas, my home team lost the game. But, as usual, it was still attacked by my hot iron. Nine power supply caps, 9 audio chain caps and an output buffer transplant as well as tightening up its stock passive de-emphasis later, it still sounds great! Maybe even a bit better. There are 2 filters in Wide, 2 more added for Narrow 4 total , then a totally different path with 4 different filters for Super Narrow.
The TU is reputed to be better-sounding than the T, on average, but our panelist Eric had a unit that was out of alignment so its sensitivity and selectivity were not up to spec. It beat the pants off a new Fanfare. After the mixer is an IF transformer, then a real nice touch, two FETs in parallel driving the first ceramic filter.
In the linear oscillator, there is a tuned varactor generating the LO, followed by a FET buffer, followed by another tuned varactor stage, and then this signal drives the LO input on the mixer.
So I count 5 gangs total, with 2 in the LO area, so it's the equivalent of 4 gangs by the 'traditional' count. Our contributor Paul E. It has superb sound quality, and the super-narrow filters mean it is good for DXing without needing any modifications.
Our contributor Tim compares a modded TU to a couple of other top modded tuners on our Shootouts 2. This circuit helps to ensure superior performance characteristics in every respect.
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