IPB

Welcome Guest ( Log In | Register )

Ceramic Cartridges and RIAA Equalization, Plus: Sneak preview of Knowzy samples page
Knowzy
post Apr 26 2009, 20:32
Post #1





Group: Members
Posts: 128
Joined: 15-July 08
Member No.: 55856



The upcoming page* showcasing the USB turntables samples I've been posting put a renewed focus on ceramic cartridges. This caused me to update the case against ceramic carts in the turntable guide.

I added a new section on RIAA equalization and would appreciate a review for technically accuracy. In particular, I would like you to pick apart this declaration:

QUOTE (USB Turntable Guide)
Ceramic cartridges don't require a pre-amplifier yet still approximate the RIAA curve. You might say that ceramic cartridges equalize the audio signal organically: They rely on their chemical composition to implement the RIAA curve.


Am I over simplifying? Are there capacitors or other components down the line that also affect the equalization of the signal or is it truly all in the cart itself?

As always, I appreciate your insights.

-Jeff

* Sneak preview. This is the only link on the Internet leading to that page.
Go to the top of the page
+Quote Post
 
Start new topic
Replies
Arnold B. Kruege...
post Apr 28 2009, 11:29
Post #2





Group: Members
Posts: 3651
Joined: 29-October 08
From: USA, 48236
Member No.: 61311



QUOTE (Knowzy @ Apr 26 2009, 15:32) *
The upcoming page* showcasing the USB turntables samples I've been posting put a renewed focus on ceramic cartridges. This caused me to update the case against ceramic carts in the turntable guide.

I added a new section on RIAA equalization and would appreciate a review for technically accuracy. In particular, I would like you to pick apart this declaration:

QUOTE (USB Turntable Guide)
Ceramic cartridges don't require a pre-amplifier yet still approximate the RIAA curve. You might say that ceramic cartridges equalize the audio signal organically: They rely on their chemical composition to implement the RIAA curve.


Am I over simplifying? Are there capacitors or other components down the line that also affect the equalization of the signal or is it truly all in the cart itself?


Ceramic cartrdiges are usually specified to work best with a specfic loading, which in some cases may include non-trivial RC networks.

The easy part of making a cartridge that has a mechanical RIAA deemphasis curve seems to be the overall -6 dB/octave slope. The turnover or flat spot between roughly 500 and 2100 Hz is more difficult to create mechanically.
Go to the top of the page
+Quote Post

Posts in this topic


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 2nd August 2014 - 06:16