"I built a tube trap and almost brought Maria Carey to life!" NO! here we'll not have the usual overstated yet curiously vacuous descriptions of what hifi and room setup can do for you. Lose those veils! Feel the bass 'slam'! Argue over 'musicality' versus 'accuracy'! Be a PRaT! The histrionically-challenged in search of cleaner highs, bloomier lows, purer mids and an object lesson in the abuse of nouns as verbs might like to try www.stereophile.com instead...

www.acoustica.org.uk
...500 thousand kilowatts of music power. W-e-f-u-n-k, y'all.

Acoustica.org.uk is brought to you by the Twisted Pair, cheerfully pragmatic inhabitants of a flattish earth. The site is basically a a scratch-pad for audio-related things we've tried and liked enough to write up. Just browse at will through the sections on the left; don't go looking for 'IMHO, your mileage may vary' type disclaimers though, because there are none. Feel free to send comments, requests, case studies and the title deeds to spare desert islands to martin.

The PFM Flea 14 May 08: Templates for Garrard 301 and 401 tuntable plinth cut-outs are available. Also recent is a page on the performance of Impulse H2 loudspeakers, contributed by Rob Holt & Simon Ashton; a couple of reviews added to the Deltec & DPA page; a look at the role of ESR in regulator output caps. And not forgetting pair of pages on bias-current setting and distortion in Naim amplifiers and the function of the 27R/47uF filter used throughout the Naim small-signal stages.


The high-quality PCBs for the AD797 - based clock PSU otherwise known as the PFM Flea are now sold out. However - we are now pricing a second run of PCBs . If you would be interested in ordering one or more PCBs (at a guide price of £4 each inclusive of P&P) please email an enquiry. This project is an easy-to-build, but exceptionally low-noise, wide-bandwidth voltage regulator specifically for the TentLabs XO clock module. A full build manual is available for download; click the image at left.

Support Real Stereo!


© the twisted pair 2000-2007: This page is best viewed with the Lee 'Scratch' Perry boxed set rumbling away close by

Latest updates:

  • 8.03.08: DPA pages updated with new reviews.
  • 23.02.08: 3pin regs page 3 and 27r+47uF filter pages added.
  • 01.07.07: Deltec pages - reviews considerably expanded.
  • 09.06.07: Deltec pages added.
  • 04.06.07: Naim amp bias page added.
  • 26.04.07: Ads & links pages overhauled
  • 08.02.07: Ads page added
  • 2.01.07: A few minor typos fixed.
  • 7.10.06: 3-pin regs pages added.
  • 30.09.06: SMPS for Naim preamps page added.
  • 19.07.06: Impulse Speakers page updated - cyberfi Taus review added
  • 17.06.06: IMpulse Speakers page updated - thanks to Brian Taylor.
  • 12.06.06: PFM Fleas first PCB batch sold out.
  • 06.04.06: PFM Flea page updated with build manual and PCB info.
  • 06.01.06: Planet mods page updated.
  • 03.01.06: CD3.5 mods page updated.
  • 20.12.05: No more yellow! - for an even plainer look.
  • 4.12.05: H6 rebuildpage added; CD3.5 mods pages updated again
  • 7.10.05: Cd3.5 mods pages updated.
  • 28.08.05: Rega Planet page updated.
  • 29.06.05: mains noise and mains filtering pages updated.
  • 29-30.05.05: Naim pre-amp mods bible, links and Impulse brochure pages added; components page links fixed; Lali review added (25.06.05)
  • 12.02.05: Naim PSU mds, components and suppliers pages added - many thanks to Ced.
  • 23.01.05: Impulse page updated - thanks Rob Holt and Jon Larsen!
  • 26.09.04: 'Naim CD3.5: other mods' page added;
  • 12.08.04: Nait2 line level input page added; Links page finally updated.
  • 05.08.04: 'Impulse' pages added and updated.
  • 22.06.04: 'Mains filters and hifi' page updated.
  • 29.04.04: 'about conservatories' and 'mains regeneration' pages added; Nait2 mods updated.
  • 25.04.04: 'Speaker positioning: practical' page added.
  • 14.04.04: Ugly green default hit counter added out of curiousity.
  • 02.02.04: Finally! an update! Nait2 page added; links page updated.
  • 09.07.03: Naim page added; links page updated; bits and pieces fixed.
  • 04.09.02: Earthing page added with links.
  • 01.09.02: CD63 tweaks updated, adding a few things we forgot; hrefs across the site tweaked to load faster, and a change of colour.
  • 10.08.02: Mains&impedance and conversions pages added; Power Quality primer link added - and the links fixed so they pop up in new windows.
  • 05.08.02: A Quicktime movie added - see the 'mains-borne noise' page.
  • 03.08.02: Links pruned; the CD63 tweaks expanded; More Stuff added - see the 'mains-borne noise' page.
  • 30.12.01: CD63 tweaks updated with diagrams & text expanded - thanks Andy.
  • 14-20.12.01: Gosh, it's been a while. Links relinked; tweak pages tweaked; airproofing, speaker positioning, glass and mains pages added; almost looks like a website now.
  • 14.07.01: Rega diagrams added, links updated
  • 28.06.01: Rega counterweight page added, with a few diagrams to follow....and a general site tidy-up
  • 21.02.01: Flutter echo: the original forum thread added
  • 10.10.00: Tweaks page lashed together; links updated
  • 30.09.00: First post; world domination secured

    © the twisted pair 2000-2004: This page is best viewed with the Lee 'Scratch' Perry boxed set rumbling away close by