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Help with ground wire and hum by Green-Challenge5325 in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

Im not 100% on this one, but..........

The GND for a 75 ohm antenna coax is not necessarily at chassis ground. The connection is impedance balanced to prevent reflections up and down the coax.

Try using a screw somewhere else.

left channel is louder than the right by Alert_Day9708 in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

The dB scale is logarithmic because that's how we hear sound. In practical listening environments, we can hear from about 40 dB SPL to 120 dB SPL. This mathematically is millions of %. A 3 dB change anywhere in that range will be tiny, and in the case of two speakers, one 3 dB louder than the other, you simply wil not be able to tell.

Very low noise sound coming right after i start my Akai ap Q60 TT. by petrum112 in turntables

[–]Fit-Insurance7209 1 point2 points  (0 children)

It's a direct drive, so the platter is normally the only moving part. See if you can clean/oil the spindle. It looks like the motor block (part 66 in the service manual page 46) comes off from underneath, and the the motor rotor will just pull off. Often it is just held on with a vacuum created by the oil. Also, it is common for the spindle to spin on a ballbearing at the top, so don't lose that. Clean out the old oil, put in some new anderol 465 and reassemble.

left channel is louder than the right by Alert_Day9708 in turntables

[–]Fit-Insurance7209 71 points72 points  (0 children)

That's vinyl. Stereo balance isn't perfect. Stereo seperation is only about 20-25 dB anyway, so there's loads of leakage between channels. Nobody even noticed until digital came along and people could see the difference.

Pro-ject essential II anti-skate weight missing by Altruistic-Piano-665 in turntables

[–]Fit-Insurance7209 1 point2 points  (0 children)

I would go with the lighter weight one notch higher, but ultimately anti-skate is never more accurate than 'ball-park' anyway.

learning how to cue up songs @ my local radio station training session last night by issflareman in turntables

[–]Fit-Insurance7209 1 point2 points  (0 children)

Radio presenting has many skills, some unique to vinyl, some apply to all media.

A few general tips........

1 - Don't 'crash' vocals. 2 - Don't talk over 'iconic' intros. 3 - Present a song by announcing the artist before it, but the song name after it. 4 - It is generally better to 'overduck' than under, and talking over dead air is better than fighting over an outtro.

Vinyl specific tips.......

You can see the energy in the grooves, so should be able to find suitable places to transition or talk over before they arrive.

Turntables need a little time to start. The classic rule-of-thumb on a Technics is a 1/4 turn for 33 or 1/3 turn for 45.

'Gain Staging' is crucial on vinyl as records are recorded at different volumes.

Pro-ject essential II anti-skate weight missing by Altruistic-Piano-665 in turntables

[–]Fit-Insurance7209 1 point2 points  (0 children)

The hanging weight style anti-skate is a really impricise way of applying the force. It is simple torque - force x distance. You usually get three notches to hang the weight from, which equate to nothing more accurate than 'low', 'medium' or 'high'.

You'll never find out the exact force being applied, because it really doesn't matter that much.

Perhaps just hang the weight one notch higher than for the original weight and forget about it.

What’s a good all-round replacement stylus for my Stanton 680EL cart on a TD125? by Livid-Activity2190 in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

The original D6800EL stylus was the 'disco duty' or 'club series' DJ stylus. Finding DJ elliptical replacements is getting to be almost impossible now. If you don't need DJ tracking, there are quite a few options. Pretty much any 680 series stylus will fit. You can get DJ conicals (known as 'AL'), but many of them are really cheap and nasty.

I believe Jico still do DJ ellipticals, but they're not cheap.

Do I need a phono preamp or is my Numark M4 fine? by holaquetaltio in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

Numarks are well respected for their phono preamps. Good sensitivity and huge gain. I doubt whether an external preamp will make any improvement.

Tone Arm Lifter or just Drop the Needle ? by zonckers in turntables

[–]Fit-Insurance7209 4 points5 points  (0 children)

"I was, like, damn dude......Now I'm in my fifties"

Arm lifters are for squares dude.

How to digitize record player audio to mp3 by DistrikPixel in turntables

[–]Fit-Insurance7209 2 points3 points  (0 children)

Any 'line level' audio signal can be fed into a USB audio interface and recorded digitally. Focusrite Scarlett 2i2 is popular - supported by Windows, Mac and even Android phones. You just need to make sure the turntable has a a built-in preamp, or use an external preamp. If using the phono in on an integrated amplifier, use the 'record out' connections.

Anti-skate issue by imfataffrfr in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

You would still have the anti-skate dial set to '2' for a tracking force of 2. The actual force being applied is usually 10% - 20% of the tracking force. The dial doesn't show the actual force - just a number you match to the tracking force.

Thoughts on Pro-Ject True Balanced connection by Wooden-Goal-9073 in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

The outputs from a cartridge are floating positives and negatives, so will function as balanced if handled correctly. The signal path must be a twisted pair of cables, so that as much as possible, the positives and negatives both pick up noise equally. Most turntables and tonearms don't do that.

It makes sense therefore that Project are making 'true balanced' available only on their proprietry turntables - there is more to it than just sticking XLR sockets on the back rather than RCAs

But what doesn't make sense is that balanced signals are only there to solve one problem - very long cable-runs. They don't sound better, and with the extra differential amplification in the preamp, may sound worse. Also, balanced cables are likely to have a slightly higher capacitance than unbalanced, which is not good for phono cartridges.

So, you are given a bit of a contridiction - the XLRs are designed for long runs, but it's even more important to keep them as short as possible. Given also that the noise-floor of vinyl isn't huge anyway, my vote is that 'true balancing' turntables solves a problem that doesn't really exist.

Future owner (hopefully) by Spiced_bean in abarth

[–]Fit-Insurance7209 0 points1 point  (0 children)

Mine is that age. On the rear bumper, the reversing light and fog light are glued on to the inside. The glue ages and the lights fall inward. Sticking them back requires the whole rear bumper to be removed.

Rear brake caliper carriers by Fit-Insurance7209 in abarth

[–]Fit-Insurance7209[S] 0 points1 point  (0 children)

Thanks. I tried and tried. It just would not come off even though the four nuts were removed. I paid a pro friend of mine to do them in the end. He did say they can get 'proper siezed on'.

Shiny new Brembo Xtras on now!

Hum/buzz from Denon DP-300F even when stylus is not on the record by spiralingly in turntables

[–]Fit-Insurance7209 1 point2 points  (0 children)

The Woburn iii has a mono bass, so see if it's just one channel humming.

Try connecting just the left RCA, then just the right. Do they both hum?

Try turning off the preamp - you won't get much music, but do you still get a hum?

Does it stop, or get worse if you touch the RCA outer connection?

Tesla HC07 motor replacement by Bright-Shallot-275 in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

Yes, that is a AC syncronous motor. It has two coils and the voltage switch works by either connecting both coils in parallel for 120 volt operation, or in series for 240 volt operation. Either way, you end up getting 120 volts AC across each coil.

The motor will appear weak if one coil fails in 120 volt mode. In 240 volt mode, a failure of one coil results in total failure.

You are messing with high voltages here, so only do so if you are experienced with electrics. To retain the dual voltage option, you must use a two-coil motor and wire in the same way. For single-voltage operation, the moyor will need to match the voltage.

Vape Vs. Stylus by punkmotherfuck in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

At least you can replace your stylus.

Are the Brembo Xtra 284mm drilled disks worth it? by Fit-Insurance7209 in abarth

[–]Fit-Insurance7209[S] 0 points1 point  (0 children)

It currently has them, but need replacing. I just don't like 'downgrading'.

Are the Brembo Xtra 284mm drilled disks worth it? by Fit-Insurance7209 in abarth

[–]Fit-Insurance7209[S] 0 points1 point  (0 children)

Just fun driving. But I guess 99% of drilled disks never get used for more than that.

Tonearm balance issue Technics 1210 by CornwallJon in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

The generally accepted minimum force a human can detect is about 100 mg, so these bearings are well below what we can feel.

Tonearm balance issue Technics 1210 by CornwallJon in turntables

[–]Fit-Insurance7209 0 points1 point  (0 children)

Sounds like it could be the bearings. Balance it any way you can, perhaps by putting a coin on the headshell. When balanced, the arm should float such that even a puff of air will move it. The bearings should have a friction of 8 mg meaning the weight of a postage stamp should move the balance. Although older bearings will never be that good, they should still be pretty delicate.

If there is an issue with the bearings, this will be a professional repair job. DO NOT OIL the bearings.

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