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Old 10th February 2014, 09:56 AM   #12031
AndrewT is offline AndrewT  Scotland
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A low impedance cartridge will be able to drive longer cables than a high impedance cartridge.
One that is also very capacitance tolerant will drive very long cables.

BUT !!!!!! these low impedance cartridges are sending signals that are ~20dB lower and thus more susceptible to picking up interference.

I recommend that the RIAA be under the pick up arm to minimise the cable length and minimise the propensity to pick up interference.

Get the signal up to about line level and then send it down long cables.

Where does one locate the mast head amplifier for the TV aerial? or for the satellite dish?

It's the same philosophy.
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Old 10th February 2014, 12:09 PM   #12032
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Quote:
Originally Posted by alexkosha View Post
Did we hear anything from skouliki about K-Multiplier test results?
Hi. I am having high voltage drop issues with Kmultiplier and trying to find out why. Im getting 47.5v at input and 43v at output. I posted a question to keantoken in the Kmult thread
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Old 10th February 2014, 06:07 PM   #12033
Salas is offline Salas  Greece
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Alternative classic active filter for about 1.2V loss. All capacitors 50V low ESR. No sink.
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Old 10th February 2014, 06:22 PM   #12034
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Quote:
Originally Posted by Salas View Post
What is the TT & cart? Well Tempered something? What is the input impedance that the folded drives? Good start up, congrats.

The TT is a Well tempered Record Player, with a AT33EV,
i am using 100ohm imput impedance as used previously on my P075mk2
The folded drives a Borbely all fet preamp at 10K input impedance.
the output cap is 3,3uf and is a little over your recommended.

The folded is braking in as we speak and is soon passing the magic 24hrs border.

Will test again tonight with bass neutral record and see if it has changed,

I have all the 15,2nf in place (15nf + 3ea polyprop) it might be a little to mutch.
I selected caps according to measurements with my new Chinese cap meter,
We discussed the Chinese quality and i prob. should have calibrated it .

ps im looking forward to rolling more records,

Per
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Old 10th February 2014, 06:36 PM   #12035
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Quote:
Originally Posted by AndrewT View Post
A low impedance cartridge will be able to drive longer cables than a high impedance cartridge.
One that is also very capacitance tolerant will drive very long cables.

BUT !!!!!! these low impedance cartridges are sending signals that are ~20dB lower and thus more susceptible to picking up interference.

I recommend that the RIAA be under the pick up arm to minimise the cable length and minimise the propensity to pick up interference.

Get the signal up to about line level and then send it down long cables.

Where does one locate the mast head amplifier for the TV aerial? or for the satellite dish?

It's the same philosophy.
Yes you are right im worried about sending 0.3mv signals at that distance,
The twisted silver in cotton is better than many other cables and does not have the limited bandwidth as shielded cables normally have,

I will do a test and see if it makes any difference
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Old 10th February 2014, 06:39 PM   #12036
Salas is offline Salas  Greece
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Quote:
Originally Posted by pellesmil View Post
The TT is a Well tempered Record Player, with a AT33EV,
i am using 100ohm imput impedance as used previously on my P075mk2
The folded drives a Borbely all fet preamp at 10K input impedance.
the output cap is 3,3uf and is a little over your recommended.

The folded is braking in as we speak and is soon passing the magic 24hrs border.

Will test again tonight with bass neutral record and see if it has changed,

I have all the 15,2nf in place (15nf + 3ea polyprop) it might be a little to mutch.
I selected caps according to measurements with my new Chinese cap meter,
We discussed the Chinese quality and i prob. should have calibrated it .

ps im looking forward to rolling more records,

Per
Also try 220R load for that cart. Neither that cart nor this Riaa alignment are known for ripe upper bass. Acoustic feedback from loudspeakers to the TT or its arm & cart resonant frequency bit high can give all sorts of effects. C2Y value is an area worth subjective evaluation for system synergy. Either lower or higher than target. In well tonally balanced full systems, real 15.2nF C2+C2Y total value should feel neutral.
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Old 10th February 2014, 08:23 PM   #12037
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Ok

better now,
I guess the record i played yesterday is prob. not the best production the word has seen,
After some records tonight the sound of the riia itself is less dominant and the sound of the record is what i hear.
On Bruce Springsteen Tunnel of Love, One step up it plays bass with very good detail, better than i heard before,

Fun

Have records, will play

Last edited by pellesmil; 10th February 2014 at 08:26 PM.
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Old 10th February 2014, 09:07 PM   #12038
Turbon is online now Turbon  Sweden
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Mine was quite bright when first started to listen. Much better now after a couple of weeks.

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Last edited by Turbon; 10th February 2014 at 09:31 PM. Reason: Typo
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Old 10th February 2014, 09:42 PM   #12039
Salas is offline Salas  Greece
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Quote:
Originally Posted by pellesmil View Post
Ok

better now,
I guess the record i played yesterday is prob. not the best production the word has seen,
After some records tonight the sound of the riia itself is less dominant and the sound of the record is what i hear.
On Bruce Springsteen Tunnel of Love, One step up it plays bass with very good detail, better than i heard before,

Fun

Have records, will play
I am for tuning the TT system and Riaa preamp subtle parameters for an average of recordings in one's collection than for a few reference but seldom pressings. Its all about max everyday musical pleasure since vinyl is not prepared for master or pressed in absolutely same way in all plants. That will take a little time to grasp as well as letting some components like the electrochemical caps come up. From Thurston Moore to the Boss there is some quite wide listening space to evaluate. Then in better confidence one can revisit the TT set up subtleties or the C2Y thing if it proves productive.
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Old 10th February 2014, 10:04 PM   #12040
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Second that.

Thank you Salas

Need to play more tomorrow,

Time to sleep unfortunately

Per
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