Have a home made amp in the workshop which is used a great deal - I tend to listen to the radio all the time I'm in there. And of course doubles as a test amp for anything needed. My diagrams for it are dated 1997, and it's worked just fine since I built it. Until last Friday. Had to turn the volume well up to hear anything. It has balanced inputs, and the unbalanced outputs appear beside...

People may be interested in this. http://www.bbc.co.uk/blogs/radio3/posts/BBC-Proms-in-Surround-Sound I'd be interested in knowing what Linux distros/browsers work (or not). Both for my own interest and to pass on to the BBC for their info. Hope is to make the final 4.0 systems as accessible as possible as well as as high quality as possible. I'd also like to give it a try myself, but almost...

http://www.bbc.co.uk/news/magazine-27161894 -- Tony Sayer

Have a quite old M-Audio DAC feeding TV sound via Toslink to the Hi-Fi, which works ok. But the actual audio level is a bit low compared to the radio tuner, CD, etc. The output level from the TV is fixed. The DAC has both XLR balanced and 1/4" jack unbalanced outputs. Thought this odd 'till I looked inside - it uses discrete transistors to drive both, and both can be used at the same time....

Just to let people know I've now put up results of my tests on two high quality (and expensive!) USB ADCs. They are the Benchmark ADC1 and the NuWave Phono Convertor. Both work fine with Linux and RISC OS. You can find the page at http://www.audiomisc.co.uk/HFN/ADC/HighQualityADCs.html I ended up buying the ADC1 I was sent to test! :-) Jim

Been playing with an pro electronic crossover in conjunction with a Quad 405, and am having ground loop problems. IIRC, a 405 used with a 33 etc pre-amp doesn't have the mains ground connected - it gets its mains feed from the preamp via a two core main lead. Perhaps not PC these days. The 405 input socket has the ground connected to chassis. Have read the grounding arrangements internal to...

On Monday, February 19, 2001 1:06:04 AM UTC+2, Malcolm Stewart wrote: Am doing a clear out and can offer a Powertran Electronics Linsley Hood Amplifier complete with circuit diagram. This was an early DC coupled design, and I think had a good reputation in its day. As amplifier is faulty and hasn't been used for a few years, it is only suitable to knowledgeable person with suitable...

A well-known hi-fi magazine recently ran an article about how apparently an uncompressed WAV file sounds better than FLAC. Ummmm... *facepalm* -- Squirrel Solutions Ltd Tel: (01453) 845735 http://www.squirrelsolutions.co.uk/ Fax: (01453) 843773

Just to let people know I've now put two different stereo audio recorder programs I've written on my website. They're available from. http://www.audiomisc.co.uk/software/index.html The source code is included as usual. Plus a 'help' text file. There are two versions: USBAudioRecorder. Works with USB Audio Class 1/2 compliant ADCs with

Has any one auditioned the Naim 32 and 72 replacement boards ?. Made on Ryan Sound Labs ?. I they offer a remote version.

I don't know if e any of you caught this series, but i listened to a couple where the council left, presumably calibrated recording equipment with residents to try to find out if the noise they claimesd was ruining their lives was against the law. In both cases, it seems the actual recording did not show a very loud sound. To me this would point to perhaps structure borne sound or some kind...

I have pair of these speakers (ATC SCM40): http://www.ebay.co.uk/itm/ATC-SCM-40-Black-Ash-Excellent-pair-/141312839532 Is painting the tweeter plate quite easy? The dome seems to be fixed to the plate in some way, and I can't see how to get a neat finish (as in this pair - the photo shows it well). How is the bass unit fixed to the baffle? I'd guess 'from behind', but if so, how does the...

** Hi to all Quad audio fans, please enjoy this U-tube made by a most famous British audio guru. Contains all you ever wanted to know about Quad's famous tube based tuners, pre-amps and power amps from the 1960s. Plus a tutorial on setting up your tone arm for playing LPs. An absolute must see !!!

Hi just purchased from a market the above Pre & Power Amp very cheap I remember these were quality Amps, I had one of their Signal Generators years ago, made in the same case as the P51 Question is I have Kef 105 series3 Speakers these are rated at 4 ohms and current greedy , so I am reluctant to try them, Anybody driven these Amps hard into 4 ohms and did they cope OK

I'm setting my laptop (linux w XBMC) as a media centre when it is not out and about. It has not got 5.1. The docking station has a coax SPDIF output so I am wondering which works best, cheap DAC with SPDIF input v cheap DAC with USB? I'm leaning toward SPDIF, hopefully it is either already transformer coupled or can be easily (I hope). I've had issues with cable boxes / laptop power supplies...

I've got an unused DAB radio (an Alba PD2) that I'd like to use in the bathroom. It's mains only - the mains input jack says '6V DC 1500ma'. Might it be feasible to lash up a rechargeable battery pack of some sort - lead or NiMH, for example? There's a fair bit of room in the large case - I'd say at least 5cm x 5cm x 4cm. I would just try a few NiMH but some radio manufacturers describe them

Does anyone find it strange that Apple is buying a headphone company? I've not heard anything good about Beats. Are they better than Bose? :-) -- Eiron.

Yes, I had a crackly one on a mixer desk I use, and gave it a squirt and worked the plug up and down in it and all seemed fine. Left plug in overnight, In the morning there is no retention or connection, one supposes some solvent in the spray has melted the material the contacts were mounted on. One lives and learns. Brian --

Is there any way to fix a remote control where the conductive coating has worn off the commonly used buttons? Are replacement membranes available? Or is conductive paint or film any good? -- Eiron.

I've now started writing up the results of measurements on three different devices. FWIW The best of these is a Focusrite 2i2. I'll put results on the web and in a magazine article when done. However I'd still be interested in other alternative devices. Steinberg claim that all their 'UR' series *except* the UR22 are USB audio class compliant. Which is daft from my POV as the UR22 is the only...