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 2011 (7)
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- Roberto
- Italy
- 19 December, 2011
Greetings from Italy !
I'm building a digitally controlled preamp too (but using an ATMega processor and a 320x240 color touchscreen LCD) and your site has been very inspiring for me.
Keep up the good work !
Best regards. -
- Mike Holland
- Sydney, Australia
- 16 October, 2011
Hi Mark,
I am searching for a little advice/help on my problem with my mag pickup equalisation stage. I am running a LH Class A amplifier with the pre-amp that he produced for his 75 watt amplifier. Recently I stopped getting any bass with my records, in both channels. First thought was that the earth connection was broken, and I was just getting the difference signals for the two channels, but everything checked out fine. I have tried a different pickup cartridge, to no avail.
My "Stereo Checkout" disk indicates that I am getting nothing below about 200 c/s in either channel.
Do you have any suggestions what could cause this? Any component failure should only affect one channel, unless it is in the power supply!
Any help gratefully received.
Mike -
- gerald a estes III
- olongapo city, philippines
- 13 October, 2011
greetings mark,
10/13/2011 @ 9:35am local time... WOW! fantastic! your projects are truly inspirational!
found the site searching 'powered speaker circuit design'.
what you have here is a u.s. licensed architect / design firm, relying as of late on design/build woodworking projects wishing to thank you.
5's acrost the board regardless of the ck'd items.
respectfully,
gerald -
- mike
- UK
- 3 August, 2011
Hi Mark
I was very interested to read the views of everyone on Rogers speakers.I heard a pair of LS6s demonstrated in 1986 at Cambridge and bought them on the spot to use with my Quad 405-2 power amp and Quad 44 preamp acquired at around the same time. It was a marriage made in heaven and still use this amp/speaker combination today. Admittedly I had originally intended to upgrade the speakers when funds allowed, however over the years I found the necessary financial outlay unjustified by any apparent improvement in sound quality.
At the time I heard them demonstrated against Tannoys and Spendors and found the Rogers a good balance between the bass performance of the Tannoys and the top end performance of the Spendors. This sounds like my choice was a compromise but it wasn't, as proven by the test of time!
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- Guritno Djanubudiman
- Jakarta, Indonesia
- 5 April, 2011
Nice project you have.
How do you explain, how/where the subwoofer/bass lower frequencies are being separated on your circuit sector?Thanbk you
Best Regards,
Guritno -
- sir lord keith
- rochester kent
- 16 March, 2011
nice one dave in hornchurch for repairing my ls33 rogers speakers i was quoted £300 from a local engineer thanks to marks project page i found a link for dave smith of dk loudspeakers hornchurch who i found to be a speaker wizard of the highest order a truley nice guy who magiced my lovely speakers back to life for £20 with spare parts he had in stock 24hr service .....what a guy...cheers man..sir .lord
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- Radoslaw
- Warsaw, Poland
- 1 January, 2011
Dear Mark!
Thank You for your time and patience in doing this site!
I know many people with true passions and I admire it, but sharing hard-gained knowledge with other people is even something more!
Take Care!