Audioflat

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Alfi
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Audioflat

Unread post by Alfi » Wed Nov 08, 2017 3:54 pm

Looks like the YAWNER doesn't agree with Doc mods...


http://www.audioflat.co.uk/phpBB3/viewt ... 9&start=10


Alfi.
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Dr Bunsen Honeydew
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Re: Audioflat

Unread post by Dr Bunsen Honeydew » Wed Nov 08, 2017 4:17 pm

Do you seriously expect that arse to understand anything I am doing :lol: from that last reply - not!

The problem is people look at doc mods in isolation.

1/ remove wadding
2/ increase mass and stiffness of cabinet
3/ remove crossover apart from tweeter protection
4/ dope drivers to control in band response

Each of them individually have benefits but will also show up problems, they are designed to work together to do the job.

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Helen Bach
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Re: Audioflat

Unread post by Helen Bach » Wed Nov 08, 2017 4:46 pm

yes, nothing in isolation, at last, agreement. But those suggestions are not the only fix (if it does, indeed fix). My suggestions would be:

1) add wadding, but choose carefully which type.
2) add damping to cabinet walls, in the form of an extra layer (or more) to increase damping, but not much more mass or bending stiffness.
3) remove tweeter
4) consider doping, but not a universal panacea, as it increases mass and bending stiffness!

Simon Hickie
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Re: Audioflat

Unread post by Simon Hickie » Wed Nov 08, 2017 6:18 pm

Helen Bach wrote:
Wed Nov 08, 2017 4:46 pm

3) remove tweeter
:o :o :o
“The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.” George Bernard Shaw.

Geoff.R.G
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Re: Audioflat

Unread post by Geoff.R.G » Thu Nov 09, 2017 1:03 pm

Helen Bach wrote:
Wed Nov 08, 2017 4:46 pm
yes, nothing in isolation, at last, agreement. But those suggestions are not the only fix (if it does, indeed fix). My suggestions would be:

1) add wadding, but choose carefully which type.
2) add damping to cabinet walls, in the form of an extra layer (or more) to increase damping, but not much more mass or bending stiffness.
3) remove tweeter
4) consider doping, but not a universal panacea, as it increases mass and bending stiffness!
1) add wadding, but choose carefully which type.
Why? Wadding is essentially a spring so all it does is to delay the release of energy, it has little or no damping effect, if it was doing a good job of damping it would get warm.
2) add damping to cabinet walls, in the form of an extra layer (or more) to increase damping, but not much more mass or bending stiffness.
An extra layer of what? The cabinet needs to be stiffer so you can add more material, wood, steel etc. to do this but it will inevitably increase the mass but also it will change the resonant frequency of the cabinet and deaden any ringing. I haven't bought any speakers for many years but I do know that very few are made of hard wood most are only veneered so what is underneath could be chipboard, MDF or plywood. Of these only top quality plywood would be stiff enough.
3) remove tweeter
Pardon?
4) consider doping, but not a universal panacea, as it increases mass and bending stiffness!
I gather that this is precisely the idea! I haven't tried it. I can tell you that simplifying the crossover works, a single capacitor to the tweeter is the ultimate in simplicity.

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Fretless
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Re: Audioflat

Unread post by Fretless » Thu Nov 09, 2017 1:48 pm

Someone who thinks that removing the tweeter will improve the sound must have a severe hearing problem.
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karatestu
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Re: Audioflat

Unread post by karatestu » Thu Nov 09, 2017 4:16 pm

Fretless wrote:
Thu Nov 09, 2017 1:48 pm
Someone who thinks that removing the tweeter will improve the sound must have a severe hearing problem.
:lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol:
Naim, Linn & Harbeth fanboy

Alfi
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Re: Audioflat

Unread post by Alfi » Fri Nov 10, 2017 9:05 am

He must be fitting a different tweeter - surely and not hope to run the mid/bass full range?

Alfi.
Heavily modified LP12, Sole VIII sub-chassis, "In Sole" advanced polymer suspension, Ai bearing, PU7, DV20X2, Norton Airpower clone. Technics SL110A, AT 1005, Denon DL301A. NVA Phono 2 MC (2 power supplies), NVA P50 SA, NVA A40 Mk1 power amps, custom birch ply Allison 6/NVA Cube 1 clones, NVA TIS mk2 , SSC, LS6.

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savvypaul
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Re: Audioflat

Unread post by savvypaul » Tue Jan 30, 2018 7:29 pm

Things have gone a little, erm, flat at Audioflat. Time for a prod. They did say they wanted to play, after all... ;)

Flat Earth War Criminal 'No-One' Defeated By HFS Operation

The notorious Flat-Earth Nazi 'You're No-one Without A Sub-Chassis' was soundly defeated after being lured into the open on a thread created by the HFS Secret Service agent known as 'The Bitch'. 'No-one', as his friends call him, is one of the highest ranking flat earthers still posting today and likes to be addressed as Herr Dealer-Fuhrer.

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Following this public cuckolding, 'No-one' has changed his name to 'You're No-one Without An NVA' in an effort to disguise himself among the more enlightened members of Hifi Forum Land...and can be heard each night, over the plinky plonks of Dire Straits greatest hits album, pleading that "I always liked NVA, I always wanted to stock NVA, it was the mafia that stopped me, I WAS ONLY FOLLOWING ORDERS!!!" Inevitably, though, his time is bandwidth-limited and 'No-one' will now be held permanently at AudioFart, a place where 'No-one' ever goes. "He will be sadly missed"...said 'No-one'...ever.

No-one was once rumoured to have fled to Paraguay via The Vatican in Rome, travelling along the shallow North East Italian river 'RubiKon'...but he never actually left the gents toilets in Salisbury high street. Although the RubiKon theory has since been proven to be a load of bouncing bolloKKs, it is now widely accepted that 'The Pope' is a hard-line 'flat earther' and often prostrates himself, spreadeagled over a turntable set-up jig prior to addressing the crowds in St Marco of AOS Square, hence his nickname 'flatpopey'.

Many Flat-Earth hunters believe that YN is not the only senior figure to have evaded justice for too long. Some have even put forward conspiracy theories which suggest that Julian Veruca's death was faked and believe he escaped to Argentina in a LInn-made submarine named KursK (later infamous for being lost in the Barent sea with the entire remaining stocks of genuine LP12 spring and grommet kits on-board).

Image

An early flat earth dealership...here seen demonstrating the 'Krok von Scheiss' gramophone with optional baKelite armboard upgrade. (BTW even this early deck can be brought up to the current Radikal spec for just £18,670).
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Alfi
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Re: Audioflat

Unread post by Alfi » Tue Jan 30, 2018 9:05 pm

Even more hilarity to be had here.....

http://www.audioflat.co.uk/phpBB3/viewt ... ?f=7&t=707

What a feckin palaver. It's bound to end up a pile shite anyhow :lol: :lol: :lol:

Alfi.
Heavily modified LP12, Sole VIII sub-chassis, "In Sole" advanced polymer suspension, Ai bearing, PU7, DV20X2, Norton Airpower clone. Technics SL110A, AT 1005, Denon DL301A. NVA Phono 2 MC (2 power supplies), NVA P50 SA, NVA A40 Mk1 power amps, custom birch ply Allison 6/NVA Cube 1 clones, NVA TIS mk2 , SSC, LS6.

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