Welcome to my guestbook, where you can see what previous visitors think about this site and my projects and articles. Many thanks to everyone who has left messages - your feedback really is appreciated!

Guestbook entries from 2013 (10)

    • Jim Hagan
    • Dagupan City, Philippines
    • 14 October, 2013

    Thanks for a great site. This is the best site I have been on for instruction, code that compiles and works.
    Looking forward to your applications.
    Very best regards.

    • William Lee Parks
    • London, Kentucky, U.S.A.
    • 13 September, 2013

    I have owned both the Chartwell LS3/5A and the Spendor LS3/5A Spendors (and still do). I use a custom made tube preamp and power amp to drive them. I love the sound. I just acquired a pair of Spendor SP1's. They take the sound of the BBC developed speakers a step higher Mr. Spencer Hughes was by any measure a very brillant designer who knew well the sound of live music and how to design and build speakers capable of reproducing that elusive sound. It is a shame the speaker design lab of the BBC is no more.

    • isuru
    • 24 July, 2013

    Your super man.i like your all project. an try LM4782 amp. i am srilnka. sorry no understand english language. understand simpel english

    • Paul
    • uk
    • 7 July, 2013

    Hi and many thanks, don't know if you're still active on this site but i'm begining to try to learn pic programming and your site has been by far the clearest start i've come accross

    • Jose
    • Mexicali, Mexico
    • 6 July, 2013

    I'm starting with pic's and this is a good place to start. Thanks.

    • robert woodliff
    • London, the one to be found in England.
    • 28 June, 2013

    Ref:- Rogers dB 101
    Mark, Thanks for putting up the great inside & out review of the lovable, if rather directional speakers. I have three pairs, two sets run as a set, due to their impedance value & the third run with a Cannon vertical speaker set (sound quality no were near as good), to get over the directional nature of the Rogers.
    One minor question, any idea how to clean the exposed cone without damaging it? Ok I've had them for 15 years (?) and I've tried to resist the temptation, but the girlfriend is itching too, and before they are dusted into oblivion any advice? ...... other than become celibate!
    Regards Bob

    • Pervez Akbar
    • United Kingdom
    • 14 April, 2013

    I have been trying to learn about programming for the past 10 years. There aren't any books which will take you through step by step like this one. This has encouraged me to learn more.
    I have book marked your website and looking forward for any updates

    Best regards
    Pervez Akbar

    • geevar
    • India, Kerala
    • 11 March, 2013

    u lightened in to my PIC programming environment........ Any way thanku so much.....!

    • Roger Adams
    • Eastsound, WA, USA
    • 19 January, 2013

    Thanks for the articles on design and building gainclone amps. Very helpful to understanding what makes it work.


    • Mark Kaye
    • Melbourne, Australia
    • 17 January, 2013

    Thank you Mark for all the valuable information on the MF A1.

    I have owned mine since it was new in 1989, and I took the plunge and opened it up yesterday. The tansformer was completely unsecured, and one of the 10000uf caps was rolling around. The other three have bulges and look ready to explode.

    Amazingly, I have been using the amp regularly, and I was oblivious to the problems lurking within.

    I shall now start the restoration process, replacing the electrolytic caps and the pre-amp as per your recommendations.

    Thanks once again.