People / Colin Wonfor
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EDITORIAL NOTE: The opinions expressed in the above post do not necessarily reflect those of our editorial team – just in case you wondered. Neil McCauley
Hello Howard. Can you ask Colin please what is star earthing and does he / will he using it in his new designs? Ta muchly J.N Peterson {Colin} Dear J.N.Peterson star earthing should be used in all analog designs, that is a single zero or earth for every component on the circuit board and normally […]
Dear Colin. I’m being a bit greedy here but two questions if I may In your opinion, what makes an Audiophile a true Audiophile? In your opinion, what do fake Audiophiles do that makes them fake? I know these two questions open the door to all kinds of jokes but I’m looking for more thought […]
Hi guys. Is there or will there be an ‘official’ Elsdon Wonfor Audio policy on this. Here’s my view. I’m an adherent to the psychological theory of so-called break-in; it’s simply one’s brain adjusting to a new piece of audio equipment. I also like to compare it to the ancient therapy of acupuncture; break-in apparently […]
Mr. Wonfor / Mr. Elsdon. Am I correct in thinking that correct time coherence of all frequencies is inherent in music? If I have understood this them I guess it means that the sound of a human voice, for example, is time-coherent in all frequencies in a waveform that in itself is a specific time […]
Here’s one for you electric wizards to kick around. Whilst attending a recent hifi exhibition I was doing some power cord shopping. At one particular display I was being told by a very well known cable company representative, I’ll not mention the name so it doesn’t influence any responses, that the rule of thumb is […]
Hello Colin. Great series so far. Thank you. A little background info: I own a Monitor Audio GXC350 centre speaker and have discovered the midrange driver produces no sound. Swapping the driver over with one from a GX200 confirms it’s ok. A volt meter shows there’s no output to the midrange driver which points to […]
Gentlemen – what is this ‘thing’ called bi-wiring and will Elsdon Wonfor Audio be making speaker cables that use this tecnique? Thanks. Ron McQueen. {Colin} Dear Ron, bi-wiring is used to stop the reflection signal of one or more transducers affecting the movement or control of another. This can happen and it is caused by […]
Dear Colin, audiophile grade sub panel and breakers? Do you know of a high quality “audiophile” grade sub panel? I read an article from someone in the audio industry where he mentioned having used a GE industrial grade 225 amp panel with a super duty silver plated copper bus bar and bolt on low noise […]
Colin – can we get meaningful measurements of power line noise? Is the noise too low-level to measure without exorbitantly expensive equipment? What equipment is required? Outside of laboratories, who has it? We buy all sorts of devices to clean up power. So why can’t we measure the noise that’s there and target it? Wayne […]
Hi Colin. Have you ever considered getting involved in active speaker design? From what I can gather, this is quite a complex task to get it right which is why, apparently so few companies get involved. I’m wondering if perhaps at some point in the future you might consider taking a good quality passive speaker […]
Hello Colin. I seem to have read somewhere that you feel that external power supplies for audiophile equipment Is really an irrelevance if the original power supply design has been correctly implemented. Have I got that right? If not, can you put your views to us? Thanks in advance, Nigel Okay, I did say that […]
Hi Colin. Fashions, come fashions go and from time to time the market has been presented with battery powered devices from preamps, phono stages and power amps. As far as I’m aware you’ve never thought of anything battery driven. Is any particular reason for this? I’m wondering if you think the claimed sonic benefits are […]
Dear Colin, Zero autoformers; how to measure impedance please? I got a pair of Speltz zero autoformers recently but when I measure the total impedance, my multimeter sees only 0.4-0.6 ohm no matter what I do. It seems the multimeter could only read the DC resistance from the autoformer itself but not the total impedance […]
Dear Colin, Generally speaking, what is it that causes output transistors to blow? Do they tend to die a natural death? Bad drivers? Emitters? Problems with the rectifier circuit? Assuming there wasn’t shorted speaker wires or excessive moisture. The amp bias and the +/-77 voltage was fine before they blew. It happened on power up. […]
Dear Colin, I’ve just picked up a Quad 405 ready for service. When I serviced my previous 405 I used the Dada kit which came with the necessary wire. Can you tell me please what size / gauge wire I should use to replace the existing power wires? Would this be suitable? http://www.rapidonline.com/design-te…0m-reels-62317 or could […]
Q: I know vintage gear isn’t your business of course but, hey, I trust your expertise and so I wonder if you can help with a component issue please? I’m doing a Sansui restoration and the main caps are Nichicon & Elna. There are many differing capacitor ranges, do you have any specific recommendations? A: […]
Hello Colin. Can you enlighten me please? I’m building a LM3886 Gainclone design for a second system, and have a few questions on the best types of passive components to choose. As it’s a second system, not looking for any exotic/expensive components, just want to make best choice of sensibly priced options, while trying to […]
Dear Colin, I write for the USA.I have a worn out slider pot that I opened to inspect. I found the contact fingers had slid over the conductive coating of the resistor track that it has worn thru it down to the bare PCB. I wish I could find a replacement, but I have not […]
Dear Colin, Accurate & cheap capacitance meters – are there any? Have decided a capacitance meter will come in handy for taking some of the ‘guess work’ out of cartridge loading, in terms of being able to measure the real-world capacitance if my phono cable/head shell wires/connectors together. Only problem is one of budget :/ […]
Dear Colin, Top resistors. Many threads with opinions on boutique coupling capacitors, but very little consolidated information on the sonics of resistors. Do you care to share your thoughts on the attributes of their favorite brands & types for specific tube and SS applications? How much of a difference does a good resistor make? My […]
Dear Colin, An audiophile friend made the following argument to me: “Stop looking for a new CD player. With a very good to excellent high-end interconnect you will not only improve the performance of the CD, but other downstream components.” I had to disagree with my friend claiming a $400 or $500 IC is not […]
Hello Colin and may I congratulate you on your resurrection. My question is this. As it is generally agreed that as a consequence of the variation of the mains waveform systems sound different at different times of any twenty four hours, do you do your fine-tuning at a similar time each day for continuity? Or […]