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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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20th Feb 2023, 7:44 pm | #1 |
Diode
Join Date: Jan 2022
Location: Sant'Angelo Muxaro, Sicily, Italy.
Posts: 5
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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 |
21st Feb 2023, 12:11 am | #2 |
Octode
Join Date: May 2009
Location: Stevenage, Herts. UK.
Posts: 1,515
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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 |
22nd Feb 2023, 8:17 am | #3 |
Diode
Join Date: Jan 2022
Location: Sant'Angelo Muxaro, Sicily, Italy.
Posts: 5
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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! |
23rd Feb 2023, 1:19 pm | #4 |
Pentode
Join Date: Nov 2021
Location: Laurencekirk, Kincardineshire, Scotland, UK.
Posts: 182
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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 |
23rd Feb 2023, 1:23 pm | #5 |
Octode
Join Date: May 2009
Location: Stevenage, Herts. UK.
Posts: 1,515
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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. |
16th Mar 2023, 9:38 am | #6 | ||
Diode
Join Date: Jan 2022
Location: Sant'Angelo Muxaro, Sicily, Italy.
Posts: 5
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The following message was sent to you via the UK Vintage Radio Repair and Restoration
Quote:
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:
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 |
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31st Mar 2023, 3:26 pm | #7 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
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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
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31st Mar 2023, 4:16 pm | #8 |
Pentode
Join Date: Nov 2021
Location: Laurencekirk, Kincardineshire, Scotland, UK.
Posts: 182
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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 |
31st Mar 2023, 6:06 pm | #9 |
Octode
Join Date: May 2009
Location: Stevenage, Herts. UK.
Posts: 1,515
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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 |
31st Mar 2023, 6:33 pm | #10 |
Pentode
Join Date: Jul 2007
Location: London, UK.
Posts: 165
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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 |
1st Apr 2023, 11:03 am | #11 |
Dekatron
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,302
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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...
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Edward. |
13th Apr 2023, 5:43 am | #12 |
Diode
Join Date: Jan 2022
Location: Sant'Angelo Muxaro, Sicily, Italy.
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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 |