TNT-Audio Readers' Corner
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Drivers parameters
Hello,
I found this acticle on air volume acceleration as I'm in the planning phase for a new DIY speaker project.
I created an excel sheet of the midranges I have in mind and encountered following problem:
The BL units are somtinmes in TM and at some manufacturers are using N/A.
So my question is: what unit to use for the formula? BL or N/A and is there a way to convert?
Regards,
Richard - E-mail: richard.thomiszer (at) hotmail.com

MW
Hi Richard
I believe two parameter expressions are interchangeable. I'm sure there'll be letters if they're not!
Good luck with your loudspeaker construction project. Do keep us informed of progress.
Happy sawing and gluing,
Mark, The Old Scribe
Mark Wheeler

DVD or multidisc player
Dear experts!
I want to expand my hi-fi setup to acquire a DVD or multi-disc player. The only DVD player reviewed that I see listed under your reviews is the Sony DVD-NS900V which at Euro 800 when tested is far above my budget. Do you have any other recommendations or is DVD and Blueray generally regarded as non hi-fi? Most of my present equipment is from Creek UK with Epos speakers and a Technics turntable all of which I am very satisfied with...
I am what you might call at the middle or lower end of the scale but I really enjoy reading your weekly updates and reviews.
Best wishes,
Mike - E-mail: michael_shanahan (at) telia.com

[Denon DBT 331]

LC
Dear Mike,
it all depends on your needs and budget. If you need to play Bluray discs as well, a simple DVD player will not suffice. You could consider any good Bluray player such as the SONY UBP-X800M2 (±€350) or the PANASONIC DP-UB820 (±€400). Otherwise, even the Denon DBT-3313UD could be a good choice, considering it's a real multiplayer (it plays even SACDs!) for just ±€550. Do not be concerned about audio quality: modern digital players use high resolution DACs and circuits, and the differences are negligible. Eventually, you could even plan to use an outboard DAC, just in case you will feel the need for a future upgrade. Considering your system, I would be much more concerned with the quality of the loudspeakers, which are the best place where one should start planning an upgrade (not that your Epos need to be upgraded soon...).
Hope this helped somehow,
Lucio Cadeddu

Tonearm and cartridge
Hi TNT Audio,
I enjoyed reading the adventures of fitting a new cartridge to the Linn Basik turntable, Vinyl frontiers, Audio Technica AT95E vs Linn k5 on Linn Basik/Akito on TNT-Audio.

Back in the day I had (and still have) a couple of the Linn Basik yellow cartridges and also an AT-95E. Could I just point out one mistake in the review? The Basik cartridge is, in fact, based on the AT-95E and not the AT91. The AT91 has a different detachable plastic stylus element (see this website: https://audiogold.co.uk/product/audio-technica-at-91/).

I got excited about this because I've just ordered a new AT-95E replacement stylus which I was hoping would fit the Linn Basik body (for reasons that are too complicated to go into here), and your reference to the AT91 sent me into a tailspin thinking I'd ordered the wrong stylus.

Some info on the Basik, gleaned from the hi-fi dealer who supplied it:

I bought 2 of these rather than replacing the stylus, before moving to the AT-95E which of course has an elliptical stylus. The current plan is to fit a 78rpm stylus to one of the Basiks and keep that as the "sacrificial" cartridge for playing 78s - of which I have quite a few.
Great website - keep it up :-D
Eric - E-mail: enrico_94 (at) hotmail.com

MW
Hi Eric,
Thanks for this information and for the kind words about TNT-Audio. For the original article I fact checked with an aftermarket stylus manufacturer who reckoned all the AT9* models fit each other & it is the internal coils that are different. I also spoke to someone at AT who (from memory only) thought that the Linn Basik was AT91 internally and the K9 & K18 were AT95 internally. I saw different ideas about the K5 which is why I was vague about it's origins but it looked like an AT95 superficially.

I'm very happy to be corrected as the web is often a dismal sump of misinformation. Your information and photographs are evidence that the Linn Basik looks more like an AT95C than any other model.

The EN (elliptical nude) stylus is even better and very much a value sweet spot in the AT range.

Thank you for the pictures, an article on the various derivatives of Audio Technica AT9* would be really helpful to long term owners looking for an easy upgrade path. Obtaining accurate historical audio information is always challenging. Accessing various iterations of Audio Technica's own historic websites (using portals like Wayback Machine) for various markets offers different information for the same designated models. This inhibits the task.

We will keep up this correspondence.

Happy Listening
Mark Wheeler

Hagerman Audio Labs Bugle MC Review
Hello,
apologies the direct inquire. I enjoyed very much your review and in fact I got me one Bugle MC, currently working with a Fosi Audio V3 (also positively reviewed by TNT-AUDIO). This is supposed to be a transition system to a new one as I recently sold my previous Unison Research electronics...but so far is sounding good! I am quite new to separate pre-phono and quite ignorant in electricity / electronics and confused also by non consistence vocabulary on those matters I tend to find on line and on the instructions.
I was just wondering which setting would be better to start with on the Bugle with my 2 cartridges here below.

Bugle MC
Gain 40, 52, 58, 64dB
Input Impedance 47k, 470, 220, 100Ohm
The 2 switches on the Bugle are named Gain and Load instead 

Goldring 2200 
Output 6.5mV
Load Resistance 47k Ohm
Load Capacitance 100-200 pF

Sumiko BluePoint No. 2
Output 2.5mV
Load Impedance 47k Ohm
Load Capacitance 100-200 pF
I originally mailed Jim Hagerman who indicated me to put Load on the Right (100Ohm) and Gain to left (40dB) ... which sounds good (adding gain it sounds louder but with excessive bass). I was surprised that I should not put the Input Impedance on the Bugle to a corresponding 47kOhms ... but I am clearly mistaken.
For the Sumiko, which I habeas not tried yet, suggestion was to try which Load lever sounds better, possibly adding gain. I just wanted to try do a check with you since you review it ... and maybe - if I am not asking too much - some clarity on the parameters!
Thank you very much for your attention in reading this and greetings from Italy,
Best,
Fabio - E-mail: fabio.niccoli (at) fastwebnet.it

MLG
Dear Fabio,
Thank you so much for your kind email. Both the Goldring and Sumiko cartridges are well-suited to the Bugle MC. I am happy you have both on hand at the same time. I think, early on, it's very important to have the opportunity to compare brands. You will likely find that you prefer the "family" sound of one brand over another. And, you can expect the family sounds of the Goldring and the Sumiko to be quite different.
Gain is no problem for either cartridge. You will have abundant gain with both the Sumiko and the Goldring on the lowest gain setting. Note that both cartridges require a load of 47k ohms. Unless something has changed since the time of my review that would mean that the left (Load) switch would be set all the way to the left for 47k ohms and the right (Gain) would be set all way to the left at 40dB of gain.
The wrong load won't cause any damage. It will just sound awful. The 470/220/100 ohm loads are only for low-output moving coil cartridges. If you eventually grow into a low-output MC you'll be happy that your Bugle MC allows you to accommodate them from the faceplate. Be certain to have the volume control on your system at ZERO when you make any changes, especially gain. Damage to your speakers could occur if you were playing music and accidentally increased the gain, so take care.
I hope this helps. Please let me know which cartridge you enjoy the most. And, thanks again for reading and writing. I appreciate the time it takes to do both.
Hope this helped somehow,
M. L. Gneier

Denon DVD player set up
Dear Arvind,
I purchased a used Denon 3910 DVD Player. I need instructions how to setup PCM 2 channel output to an external dac. The remote control that came with it blacks out the setup steps to adjust the player for proper 2 channel output.
Regards,
Richard - E-mail: babydock (at) bellsouth.net

AK
Hello Richard,
I had never used the Denon as a transport. Especially since I had a modded unit, the real value in the player was in it's analog output.
You will probably need to refer to the user manual, and hook the unit upto a monitor to read the menus to see if what you are trying to do is possible.
Best of luck.
Hope this helped somehow,
Arvind Kohli

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