337alanT system

[337alant]

Mark you are absolutely right my battery phono is not the safest bit of DIY Ive ever done and I already blew a set of opp amps because of it.
Still it will be redundant shortly I hope as battery's are a PINA as well.

Alan

[337alant]

update on the paradise phono stage, it is up and running now and playing some sweet music
It still a work in progress on some parts to get it working at its best, but as it is its still better than any other phono stage I have so I am happy but I will keep tweeking as one does with DIY
fist mod will be the transformers are producing to much input voltage which is just producing too much heat at the shunt regs so I will get a couple of 18v transformers and also couple the internal heat sinks to the outer case heat sink with some 6mm aluminium plate.


phono 1 by 337alant, on Flickr


phono 3 by 337alant, on Flickr


phono 5 by 337alant, on Flickr


phono 4 by 337alant, on Flickr


Alan

[AlfaGTV]

Very nice Alan!
Do you have any links for the PCB's/kit and boxes? (Sorry if i've missed it in a previous post?)

ATB Mike

[337alant]

Mike
This is a link to the Paradise thread over on DIYAUDIO
http://www.diyaudio.com/forums/group...stage-121.html
The cases are from Modushop biz
Galaxy Maggiorato GX288 230 x 280 mm x 80mm deep
http://www.modushop.biz/ecommerce/cat037_l2.php?n=1

others have used the nice Naim style shoe box cases from audio flat
http://www.audioflat.co.uk/shoebox_case.htm
I think Andrew also sells them on ebay ?
and here http://theartofsound.net/forum/showt...-case-for-NAIM

Alan

[AlfaGTV]

Thank you sire!
I'll scavenge those in a wee while!
Atb Mike

[337alant]

Couple of new additions to the Reel 2 Reel collection, a Revox A77 and a Revox PR99 Mk2
Both are in good condition but needing attention the A77 needs a new capstan motor which I have but haven't had time to fit it yet and the PR99 plays well but is in need of calibration to sound its best.


IMG_1119 by 337alant, on Flickr

Alan

[337alant]

Update on my paradise Phono
I have just replaced the power supply transformers due to an annoying buzz from mine and excessive heat at the shunt regs from the supply voltage being unnecessarily high.
I replaced them with a couple of 18-0-18v encapsulated torroidal from ebay these are dead silent and now the heat sinks are only hand warm
https://www.flickr.com/photos/695089...n/photostream/
Par 2

I also did the DDCR earthing under my Garrard and at the Paradise input and had to lift the ground connection in my pre amp and the result is I now also have complete silence with the pre amp flat out, so good result but I think with this grounding scheme comes a slight loss in transparency and air? may need to do some more work on that and experiment a bit.

[337alant]

Another result recently was the continuing process of teaching myself how to calibrate a Reel 2 Reel Player
The Revox PR99 Mk2 has now had a new cal/decal switch fitted and I calibrated the input, reproduce and record levels and Biased it for the Maxell UD XL1 tape and its now sounding very nice indeed.
[/img]https://www.flickr.com/photos/695089...n/photostream/[/img]

I tried to do the same about 6 months ago without a signal generator and made a mess of my Tascam BR20, fortunately I have now got that working better than ever as well
[/img]https://www.flickr.com/photos/695089...n/photostream/[/img]


Its still a work in progress though as I don't have anyone to show me exactly what to do, I'm only learning this from reading and the od Youtube video

Alan

[337alant]

Cant quite belive it but I have just bagged 2 more of the excellent Tascam BR20 Reel 2 Reel players off ebay with stands.
http://www.ebay.com.au/itm/2-x-Tasca...vip=true&rt=nc

ones a full Record/Playback machine and the other is a playback only but by the look of them they are mint condition, just hope its not empty boxes when I pick them up LOL.
I love these machines they are superb
Alan

[struth]

They look great...I only have a akai one; not in same league...I agree with you that R to R is a fantastic medium .....at least i will be able to send mine to you for a fettling when needed