An observation

All general audio posts go here.
User avatar
TheMadMick
Posts: 437
Joined: Tue Jan 31, 2017 9:50 am
Location: SOUTHPORT, UK
Has thanked: 3 times
Been thanked: 141 times
ST_PATRICK'S_SALTIRE

An observation

Unread post by TheMadMick »

When I finish a listening session or "She who must be obeyed" calls before the end of a CD, I simply leave it in the drawer - saves thinking about which CD to warm up with. However, starting the next session with that CD seems to give an improved sound quality. I've often thought why this should be and with the increased quality LS6, BMU and silver solids have brought, it is getting even more obvious.

The only thing that occurs to me is that the CD warms a little to, say, 30C in the warm CD player which makes the polycarbonate expand (plastics typically have a large coefficient of expansion). That makes it easier for the laser to read the pits in the CD pressing thus the error correction doesn't have to work so hard. That should result in improved quality?

Anyone heard this or have an explanation?
Blusound Vault 2, P50SA, A80's, BMU, TIS, LS7, MA PL200, Meridian 506 (18 bit).

User avatar
Dr Bunsen Honeydew
Posts: 30758
Joined: Wed Jul 11, 2012 7:26 pm
Location: Muppet Labs
Has thanked: 0
Been thanked: 48 times

Re: An observation

Unread post by Dr Bunsen Honeydew »

Mmmm CD warmers - :lol: :lol: :lol: FFS don't rell Russ Andrews or MCRU.

Brains or Gazzer or Ali Tit Baber will be shilling the MCRU ones on AoS like £100 fuses :angry-fire:

User avatar
CN211276
Posts: 6522
Joined: Tue Aug 09, 2016 9:29 am
Location: Cardiff
Has thanked: 1401 times
Been thanked: 976 times
EUROPEAN_UNION

Re: An observation

Unread post by CN211276 »

Main System
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Farnells cat 8 ethernet cable

Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ

Headphones
Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat

RIP Doc

User avatar
TheMadMick
Posts: 437
Joined: Tue Jan 31, 2017 9:50 am
Location: SOUTHPORT, UK
Has thanked: 3 times
Been thanked: 141 times
ST_PATRICK'S_SALTIRE

Re: An observation

Unread post by TheMadMick »

Dr Bunsen Honeydew wrote:Mmmm CD warmers - :lol: :lol: :lol: FFS don't rell Russ Andrews or MCRU. SNIP
Oddly, I suspect they have done that already but when I put the idea to one of the staff he was very "off hand" about it. Interestingly, I can't find it on his web pages any more. Another product that has come and gone? :shock:
Blusound Vault 2, P50SA, A80's, BMU, TIS, LS7, MA PL200, Meridian 506 (18 bit).

antonio66
Has thanked: 0
Been thanked: 0

Re: An observation

Unread post by antonio66 »

I mostly take my cd's out unless I know I will listen again after a short interval. Will take more notice next time I have a listening session after leaving the cd in the player. I know my brothers' manufacturer recommends removing the cd after every listening session, don't know why.

User avatar
Fretless
Posts: 9290
Joined: Wed Nov 12, 2014 12:15 pm
Location: Somewhere in Holland
Has thanked: 1487 times
Been thanked: 2280 times
Netherlands

Re: An observation

Unread post by Fretless »

Do you turn the CDP off or leave it on ?

Upstairs:
Vinyl
Pro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: P50sa - Cube2 - SSP - LS6+ Sabaj A10a (x2)
Downstairs:
Vinyl
Logic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 - BMU+ Aiyima A07 MAX (x2) + Arcam One
HP: HifiBerry Digi+ PRO + Sabaj A10d
Office:
Allo DigiOne SIG + SMSL M300se + Douk G4 (x2)
Mission 760 + Monolith THX AAA 887
Headphones: German Maestro & AudioQuest

User avatar
TheMadMick
Posts: 437
Joined: Tue Jan 31, 2017 9:50 am
Location: SOUTHPORT, UK
Has thanked: 3 times
Been thanked: 141 times
ST_PATRICK'S_SALTIRE

Re: An observation

Unread post by TheMadMick »

Fretless wrote:Do you turn the CDP off or leave it on ?
It's got valves so it stays on 24/7 and matched sets of Nu Vistors are hard to get.
Blusound Vault 2, P50SA, A80's, BMU, TIS, LS7, MA PL200, Meridian 506 (18 bit).

antonio66
Has thanked: 0
Been thanked: 0

Re: An observation

Unread post by antonio66 »

TheMadMick wrote:
Fretless wrote:Do you turn the CDP off or leave it on ?
It's got valves so it stays on 24/7 and matched sets of Nu Vistors are hard to get.
I always thought you switched off valves to save the life in them. I know Audio Research and VTL amps should be switched off, are cdp's different. My Project is left on 24/7. My brothers cdp is put on standby.

User avatar
TheMadMick
Posts: 437
Joined: Tue Jan 31, 2017 9:50 am
Location: SOUTHPORT, UK
Has thanked: 3 times
Been thanked: 141 times
ST_PATRICK'S_SALTIRE

Re: An observation

Unread post by TheMadMick »

Antonio66 wrote:SNIP I always thought you switched off valves to save the life in them. I know Audio Research and VTL amps should be switched off, are cdp's different. My Project is left on 24/7. My brothers cdp is put on standby.
I am told that the main strain on a valve is switching it on. The advice I had from MF was, confusingly, to leave the player on and to switch the amplifier off. I leave the CD player on most all the time and switch off the amp when I'm away for a week or more. Seems like a sensible compromise and is consistent with advice from John Sampson who upgraded both.

Bottom line - you pays your money and stocks up on spare valves (yes I have spares - valve rolling is fun as well) - it's worth it for the sound quality. My Nu Vistors must be about 20 years old and have been switched on and off no more than 20 times I'd guess.
Blusound Vault 2, P50SA, A80's, BMU, TIS, LS7, MA PL200, Meridian 506 (18 bit).

antonio66
Has thanked: 0
Been thanked: 0

Re: An observation

Unread post by antonio66 »

Must work, 20yrs is bloody good. :grin:

Post Reply