Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Hashimoto SUT
Hashimoto SUT
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 27th May 2019, 08:02 PM   #1
Arno Pf is offline Arno Pf  Netherlands
diyAudio Member
 
Join Date: Jan 2008
Default Hashimoto SUT

I got a couple of HM-3's and these are spec-ed for 1:20 and/or 1:40 ratio having the secondary loaded with 47K.

For 1:20 the primary impedance is 47000/(20*20)= 117,5 Ohm and this is in line with the recommended cart loading of 10x the internal impedance. Up till now all makes sense.

Why would Hashimoto recommend such a wide cartridge internal impedance from 7-40 for the 1:20 ratio?
  Reply With Quote
Old 28th May 2019, 05:25 PM   #2
Klseler is offline Klseler  Turkey
diyAudio Member
 
Join Date: Sep 2012
Location: Ankara
You have calculated the reflected secondary impedance right . But there is also series primary winding resistance in series to it. The impedence cartridge sees is sum of the reflected and winding impedences.
The actual amplification factor (not 20) is the attenuation created by the volatge division between the total primary impedence and the primary reflected impdence. But the cartridge impedence also attenuates the signal somewhat. 7-40 cartridge impedence may well be the range where attnuation is less noticible.
I dont know if it helps your quaestion
  Reply With Quote

Reply


Hashimoto SUTHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: 1 new pair Hashimoto H20-7 5K/7K OPT Triodenklaus Swap Meet 6 3rd November 2016 08:06 PM
OT PP Hashimoto HW-100-5 tube amp? apnneto Tubes / Valves 20 29th August 2016 09:42 AM
WTT/WTB Hashimoto SE OPT H-20-7u USA galyons Swap Meet 0 29th January 2015 04:43 PM
Hashimoto A-105 - 6S4A jazzbo Tubes / Valves 15 30th December 2012 11:21 AM
Hashimoto A-105 - summary so far jazzbo Tubes / Valves 3 24th September 2008 09:31 PM


New To Site? Need Help?

All times are GMT. The time now is 04:21 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki