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22nd September 2011, 09:08 AM
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#17481 |
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diyAudio Member
Join Date: Dec 2005
Location: Doncaster England
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I've not been 100% happy with the new dos sound. It still has less 'air' and hardness to the sound that I never had before.
Today I have swapped the BC550 (T5) for the current drive on the fets to a 2sc2240 as used on the older dos. The sound is now so much more composed, more linear, more composed and more 'air'. I recommend people try this. I am going to try a set of 2sa970 or 2sa1085 instead of the BC560 on the CFP Brent |
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22nd September 2011, 09:41 AM
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#17482 |
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diyAudio Member
Join Date: Nov 2006
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I was at Brents place to witness this last change.
I have to say that the improvement is dramatic. There is much more clarity, smoothness and detail. The edge that was present in drums, cymbals, pianos etc is now massively better. Pretty startling to be honest. Lee
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22nd September 2011, 09:51 AM
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#17483 |
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diyAudio Member
Join Date: Dec 2008
Location: Oxford
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Ray's still got one set of old DOS boards left!!!
 
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When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk JA-88D Class A, Audio Aero Capitole MKII, Focal and Kimber  "Leave Nothing as Standard" 
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22nd September 2011, 09:53 AM
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#17484 |
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diyAudio Member
Join Date: Dec 2005
Location: Doncaster England
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Nothing wrong with the new board as it's the same basic cct and you can mess around with it. Going to try the 2SA1085 in a while
Brent |
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22nd September 2011, 10:42 AM
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#17485 |
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diyAudio Member
Join Date: May 2003
Location: Sheffield, North England
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Some have said that transistors can make the single biggest difference in terms of component selection.
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Fave. threads: Marantz CD63 | Philips CD650 | my 3-way dipoles | T-bass for dipoles | EnABL treatment | Arcam Alpha (CD) |
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22nd September 2011, 10:47 AM
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#17486 |
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diyAudio Member
Join Date: Dec 2005
Location: Doncaster England
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I fully agree in this instance.
Fitted the 2SA1085 in place of the BC560 and it is now making music again! Brent |
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22nd September 2011, 11:49 AM
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#17487 |
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diyAudio Member
Join Date: Dec 2005
Location: Doncaster England
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This is now my current configuration. The 2SA1085 and 2SC2240 have really improved the sound.
 Brent |
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22nd September 2011, 12:43 PM
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#17488 | |
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diyAudio Member
Join Date: Oct 2010
Location: walsall west mids uk
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Quote:
being a bit of a noob is this mods to the cfp dos are the parts available at say rs ? cheers alan
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Aint broke it yet but im tryin. ( favs Fast women and even faster bikes)
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22nd September 2011, 12:46 PM
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#17489 |
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diyAudio Member
Join Date: Dec 2005
Location: Doncaster England
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Yes they are available from RS
 Brent |
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22nd September 2011, 12:52 PM
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#17490 |
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diyAudio Member
Join Date: Oct 2010
Location: walsall west mids uk
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The old boards are 6 euros each at the mo cfps 12euros, Never gone discrete much improvement over lm4562s.
alan
__________________
Aint broke it yet but im tryin. ( favs Fast women and even faster bikes)
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