UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Audio (record players, hi-fi etc)

Notices

Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment.

Closed Thread
 
Thread Tools
Old 20th Feb 2023, 7:44 pm   #1
Peters8
Diode
 
Join Date: Jan 2022
Location: Sant'Angelo Muxaro, Sicily, Italy.
Posts: 5
Default BSR SC-12 and Tetrad cartridges Frequency Response

Hi everybody!
Does anyone know the frequency response of the BSR SC-12 (or similar like the SC-11) and its Tetrad equivalent ceramic cartridges?
Thank you in advance
Best regards
Peters8 is offline  
Old 21st Feb 2023, 12:11 am   #2
wd40addict
Octode
 
wd40addict's Avatar
 
Join Date: May 2009
Location: Stevenage, Herts. UK.
Posts: 1,515
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

Some SC-11m results in this thread:
https://www.vintage-radio.net/forum/...d.php?t=130162
wd40addict is offline  
Old 22nd Feb 2023, 8:17 am   #3
Peters8
Diode
 
Join Date: Jan 2022
Location: Sant'Angelo Muxaro, Sicily, Italy.
Posts: 5
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

Thank you for the reply.
I noticed in that graphic that the BSR SC-11 frequency response is up to just 10.000 hZ.
So is this its max limit in the high responses ?...doesn't this cartridge reach at least the 15 khZ ?
Thank you very much!
Regards!
Peters8 is offline  
Old 23rd Feb 2023, 1:19 pm   #4
Chris R
Pentode
 
Join Date: Nov 2021
Location: Laurencekirk, Kincardineshire, Scotland, UK.
Posts: 182
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

This cartridge is advertised by a good number of sellers, who all show the the frequency response of the SC11M as 15Hz to 20kHz, + or- 3dB.

Chris R
Chris R is offline  
Old 23rd Feb 2023, 1:23 pm   #5
wd40addict
Octode
 
wd40addict's Avatar
 
Join Date: May 2009
Location: Stevenage, Herts. UK.
Posts: 1,515
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

Trouble is that spec was probably put out by the marketing dept - I've actually measured it...

Note how the TX88 & GP91 still maintained output at 10kHz.

There's nothing wrong with the SC11M used in the right context - it sounds great in my Black Box and tracks well. It is a definite step up from the Chinese Banpa clone.

Last edited by wd40addict; 23rd Feb 2023 at 1:44 pm.
wd40addict is offline  
Old 16th Mar 2023, 9:38 am   #6
Peters8
Diode
 
Join Date: Jan 2022
Location: Sant'Angelo Muxaro, Sicily, Italy.
Posts: 5
Default The following message was sent to you via the UK Vintage Radio Repair and Restoration

Quote:
Originally Posted by wd40addict View Post
Trouble is that spec was probably put out by the marketing dept - I've actually measured it...

Note how the TX88 & GP91 still maintained output at 10kHz.

There's nothing wrong with the SC11M used in the right context - it sounds great in my Black Box and tracks well. It is a definite step up from the Chinese Banpa clone.
Hi
Thank you for the reply....could you show your BSR SC11 measurements, please?
Anyway...do you think the BSR SC11 reaches at least 15 kHz ?
Thank you in advance!
Regards

Quote:
Originally Posted by Chris R View Post
This cartridge is advertised by a good number of sellers, who all show the frequency response of the SC11M as 15Hz to 20kHz, + or- 3dB.

Chris R
Hi Chris...mmmhhh, I could be wrong, but I don't think at all that any ceramic cartridge can achieve 20 kHz like a magnetic one.
It's impossible.
I would be happy if they reach 15 kHz...generally a ceramic cartridge does not exceed 10 kHz.
thank you for the reply!
Regards
Peters8 is offline  
Old 31st Mar 2023, 3:26 pm   #7
Radio Wrangler
Moderator
 
Radio Wrangler's Avatar
 
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,801
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

Ceramic materials certainly have useful piezo-electric properties up to MHz and beyond. There are such materials in almost every FM radio.

In record-playing cartridges the upper frequency limits are imposed by the design of the mountings, the stiffness of the cantilever etc. If manufacturers were prepared to use more expensive materials they could be made to equal the frequency responses of even the CD4 magnetic cartridges, but the compliance at the stylus would be low.

David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
Radio Wrangler is offline  
Old 31st Mar 2023, 4:16 pm   #8
Chris R
Pentode
 
Join Date: Nov 2021
Location: Laurencekirk, Kincardineshire, Scotland, UK.
Posts: 182
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

If indeed you require a cartridge whose frequency response extends well beyond that of normal hearing, why not use a magnetic one?

Chris R
Chris R is offline  
Old 31st Mar 2023, 6:06 pm   #9
wd40addict
Octode
 
wd40addict's Avatar
 
Join Date: May 2009
Location: Stevenage, Herts. UK.
Posts: 1,515
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

My results are in the thread linked above. I did not bother to test above 10kHz.

Given that the SC11M response is already ~3dB down at 10kHz it's unlikely it has much output at 15kHz.

https://www.vintage-radio.net/forum/...4&d=1475661961
wd40addict is offline  
Old 31st Mar 2023, 6:33 pm   #10
HG MICKE
Pentode
 
Join Date: Jul 2007
Location: London, UK.
Posts: 165
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

As most record players with a ceramic cartridge fitted do not have a RIAA deemphasis circuit fitted and as the HF tail off of a ceramic cartridge is similar to the RIAA deemphasis looking for a flat HF response is unnecessary.

Colin
HG MICKE is offline  
Old 1st Apr 2023, 11:03 am   #11
Edward Huggins
Dekatron
 
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,302
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

The BSR SC series and Tetred type have a quite acceptable HF upper limit - but even that may not be capable of being reproduced given the type of amplifiers and speakers these carts are mostly used in conjunction with...
__________________
Edward.
Edward Huggins is offline  
Old 13th Apr 2023, 5:43 am   #12
Peters8
Diode
 
Join Date: Jan 2022
Location: Sant'Angelo Muxaro, Sicily, Italy.
Posts: 5
Default Re: BSR SC-12 and Tetrad cartridges Frequency Response

Thank you for your reply...but do you have an idea about their high frequency level ?
Thank you for your kindness
Peters8 is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 12:36 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.