Search found 3742 matches

by mediatechnology
Wed Jun 26, 2019 2:38 pm
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 445
Views: 164626

Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

After a quick comparison I think I like the sound of 100Ω loading better than 1KΩ. The spectral balance seems about the same but the 1K sounds more shrill on transients. On bright piano the 100Ω sounded natural; 1KΩ sounded harsh almost inter-modulated on the attack. Perhaps a 1K square wave isn't r...
by mediatechnology
Wed Jun 26, 2019 1:16 pm
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 445
Views: 164626

Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

From the oscillograms it looks like the 1KΩ termination is about 2.5 dB hotter. The source impedance with 1KΩ termination is about that of the cart which is 40Ω. With 100Ω termination Rsource is around 30Ω. All other things being equal the S/N ratios shown here https://www.proaudiodesignforum.com/fo...
by mediatechnology
Wed Jun 26, 2019 12:44 pm
Forum: Build
Topic: Phono Transfer System Construction Information
Replies: 135
Views: 100689

Re: Phono Transfer System Construction Information

I decided to check the DL-103 square wave response with terminations of 100Ω (the recommended minimum) and 1000Ω (used by Denon for response measurements. As I expected there was a difference in level but not much change in wave shape. https://proaudiodesignforum.com/images/jpg/DL-103_100R_Load.jpg...
by mediatechnology
Wed Jun 26, 2019 12:40 pm
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 445
Views: 164626

DL-103 Termination Resistance vs Square Wave Response

I decided to check the DL-103 square wave response with terminations of 100Ω (the recommended minimum) and the 1000Ω used by Denon for response measurements. As I expected there was a difference in level but not much change in wave shape. https://proaudiodesignforum.com/images/jpg/DL-103_100R_Load....
by mediatechnology
Tue Jun 25, 2019 9:26 am
Forum: The Peabody Lounge
Topic: How Can We Piss Off Our Customers Today? A P&G Case Study
Replies: 67
Views: 5898

Re: How Can We Piss Off Our Customers Today? A P&G Case Study

SJW logic is to hunker down on digging the hole even deeper.
This is becoming fun to watch.
by mediatechnology
Tue Jun 25, 2019 5:45 am
Forum: Announcements
Topic: Active topics.
Replies: 2
Views: 31

Re: Active topics.

It had been turned off (by default) and I enabled it.

It still doesn't work but may need to build an index first.
by mediatechnology
Tue Jun 25, 2019 5:26 am
Forum: The Peabody Lounge
Topic: How Can We Piss Off Our Customers Today? A P&G Case Study
Replies: 67
Views: 5898

Pakistanis Boycott Proctor & Gamble

Pakistanis Boycott Proctor & Gamble After Feminist Detergent Ad Insults Islam https://www.zerohedge.com/news/2019-06-24/pakistanis-boycott-proctor-gamble-after-feminist-detergent-ad-insults-islam In the ad, several women representing different professions - including a journalist and doctor - are s...
by mediatechnology
Mon Jun 24, 2019 9:45 am
Forum: Build
Topic: Phono Transfer System Construction Information
Replies: 135
Views: 100689

Re: Phono Transfer System Construction Information

This test is pretty revealing. You can eyeball the resonant frequency and Q pretty well. I want to perform this on a DL-103. https://www.proaudiodesignforum.com/forum/php/viewtopic.php?f=6&t=423&p=8873#p8873 Great stuff Wayne :) Thank you! Looks like NJM2068 on paper looks slightly better on paper (...
by mediatechnology
Mon Jun 24, 2019 9:36 am
Forum: The Peabody Lounge
Topic: "I Am A Google Deplorable" 855-290-0342
Replies: 47
Views: 4514

Re: "I Am A Google Deplorable" 855-290-0342

Project Veritas: LEAKED Documents Highlight “Machine Learning Fairness” and Google’s Practices to Make Search Results “fair and equitable.”: https://www.projectveritas.com/2019/06/24/insider-blows-whistle-exec-reveals-google-plan-to-prevent-trump-situation-in-2020-on-hidden-cam/ Mirror: https://www...
by mediatechnology
Fri Jun 21, 2019 4:26 am
Forum: The Peabody Lounge
Topic: Something to ponder about IoT
Replies: 27
Views: 744

Re: Something to ponder about IoT

"Alexa, Eavesdrop On My House All Day Under The Guise Of Protecting Me From A Heart Attack"

https://www.zerohedge.com/news/2019-06- ... t-attack-0