Hiraga "le monstre" - Page 17 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 22nd February 2009, 09:11 AM   #161
Banned
 
Join Date: Apr 2005
Location: Stockholm
neazoi,
Teflon is an extremely good sounding dielectric material (in sharp contrast to ceramic), but for the speaker wire I would rather chose some type with massive screws. I would certainly use those tantalum resistors.
The 220 Ohm feedback resistors should have a larger mass, say corresponding to 2W power dissipation rating, in example two 390 Ohm 1W in parallel.
  Reply With Quote
Old 22nd February 2009, 11:31 AM   #162
diyAudio Member
 
audiomanics's Avatar
 
Join Date: Oct 2004
Quote:
Originally posted by Lumba Ogir
The 220 Ohm feedback resistors should have a larger mass, say corresponding to 2W power dissipation rating, in example two 390 Ohm 1W in parallel.
Oh? can you explain why?
The outputpower is 8W... this is approx 8Veff to 8 Ohms.
Say i supply 8Veff to 220 Ohm, only ~0,3 Watt is dissipated in this resistor.
Is this a better-sounding- or stability issue?

Kees
  Reply With Quote
Old 22nd February 2009, 12:21 PM   #163
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Quote:
Originally posted by neazoi
I have found some tantalum 0.5W resistors from china which cost about 4.50$ each and I was wondering if someone knows if there is a specific brand known for its good sounding properties or if these properties exist in all tantalum resistors.

Shinkoh NOS Japanese resistors are the creme of the tantalum crop. Not all, but some of their properties exist in other lesser realizations. What the others lose is mainly the Shinkoh coherence in tantalum tone. You can feel similar clean tone in metal based Caddock or Vishay even, as well as in other tantalum, but in a more disjointed outcome than with Shinkoh. What kind of tantalum have you found? Any link so to see about them?
  Reply With Quote
Old 23rd February 2009, 08:48 AM   #164
neazoi is offline neazoi  Greece
diyAudio Member
 
Join Date: Aug 2007
I have found these tantalums at a reasonable price. any reviews?:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=250367550902

I have also found these to replace the 5W resistors at the power transistors http://cgi.ebay.com/Kiwame-Carbon-Re...742.m153.l1262
So I would like to ask if this is better to go to this type or leave the standard wirewound resistors. The seller claims that they have lower noise than se metal film ones.
__________________
Great DIY site: http://www.neazoi.com
  Reply With Quote
Old 23rd February 2009, 09:08 AM   #165
Banned
 
Join Date: Apr 2005
Location: Stockholm
neazoi,
Quote:
The seller claims that they have lower noise than se metal film ones.
And even more importantly lower inductance. Much better than wire wound.
  Reply With Quote
Old 23rd February 2009, 10:20 AM   #166
neazoi is offline neazoi  Greece
diyAudio Member
 
Join Date: Aug 2007
what scares me a bit with the top resistors you mention is that I cannot find the right values (for example I can find 1.5K but not 1K and 1.2K required) and I do not want to series/parallel resistors.

The cheaper brand has many values available.
__________________
Great DIY site: http://www.neazoi.com
  Reply With Quote
Old 23rd February 2009, 10:45 AM   #167
neazoi is offline neazoi  Greece
diyAudio Member
 
Join Date: Aug 2007
For the anode resistors I have found 2.2 ohm instead of 1 ohm. Would it be ok?
__________________
Great DIY site: http://www.neazoi.com
  Reply With Quote
Old 23rd February 2009, 10:49 AM   #168
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Those you found look like the Audio Note OEM. They lag behind Shinkoh. In that case I would try TAKMAN. Good price carbon with good tech. I had a conversation with some friend that does a lot of evaluation and he told me that they fare better than AN tant for coherency. No direct experience by me yet, so take it with a pinch of salt.
  Reply With Quote
Old 23rd February 2009, 11:02 AM   #169
neazoi is offline neazoi  Greece
diyAudio Member
 
Join Date: Aug 2007
Oh, I have forgotten the hi-fi collective shop, I have ordered from them again in the past and they seem to have all tha values of thes supreme tantalums
Thanks a lot!
__________________
Great DIY site: http://www.neazoi.com
  Reply With Quote
Old 23rd February 2009, 11:09 AM   #170
Banned
 
Join Date: Apr 2005
Location: Stockholm
neazoi,
the value of the"anode" resistor is pretty critical, should be 1 Ohm.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Conversion of Hiraga's "Le Monstre" to a Circlotron tiefbassuebertr Solid State 12 1st May 2011 08:26 AM
Hiraga Monstre with SMPS? weissi Solid State 2 25th July 2008 10:44 PM
Hiraga 30W vs. Le Monstre JohanH Solid State 103 14th April 2008 11:27 PM
HIRAGA Monstre amplifier modules a333bt Swap Meet 5 14th October 2007 04:11 PM


New To Site? Need Help?

All times are GMT. The time now is 10:22 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2