My hifi is a disaster 1 problem at a time .

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Andy-831
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Re: My hifi is a disaster 1 problem at a time .

Unread post by Andy-831 »

Looking good mate, how you getting on with the P50sa, was it an upgrade?

Andy
Analogue
401 / PU7 / AT33ev
Longdog Audio Quartz Garrard PSU.
Longdog Audio Phono stage (MCj1)
Digital
NVA BMU.
Innuos Zen / Caiman Seg and Dorado
Cambridge CXC
Amps
Tron Seven Linestage.
Bel Canto Set 40, or LDA 300B Set Monoblocks
Speakers
Tannoy GRF Memory.
Tannoy ST100 Supertweeters

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CN211276
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Re: My hifi is a disaster 1 problem at a time .

Unread post by CN211276 »

Celestion Ditton 15XR speakers were the first hifi speakers i bought. Cost £100 back in 79. :grin:
Main System
NVA BMU, P90SA/A80s (latest spec), Cube 1s, TIS, TISC(LS7)
Sonore OpticalRendu, Chord Mscaler & Qutest, Sbooster PSs
Network Acoustics Eno, ifi iPurifier3, AQ JB FMJ, Cisco 2940 & 2960
DH Labs ethernet, BNC & USB cables, Farnells cat 8 ethernet cable

Second System
NVA P20/ A20, Cubettes, LS3, SSP, SC
Sonore MicroRendu, Chord Mojo 2 MCRU PSs, AQ Carbon USB cable & JB FMJ

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Grado SR325e/Chord Mojo, Beyerdynamic Avetho/AQ DF Colbat

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Daniel Quinn
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Re: My hifi is a disaster 1 problem at a time .

Unread post by Daniel Quinn »

These were dirt cheap. And yes the stepped attenuator was a step up. But not as much a two bass drivers wired in series

Welder
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Re: My hifi is a disaster 1 problem at a time .

Unread post by Welder »

Hello DQ.
I'm glad to read you are recovering. It sounds like it's been a real struggle.
Single spur balanced Mains. Self built music server with 3 seperate linear PSU, Intel i5, 16 GB RAM no hard drive (various Linux OS). Benchmark Dac2 HGC, single ended XLR interconnects/Belkin cable. Exposure 21RC Pre, Super 18 Power (recap & modified). Modded World Audio HD83 HP amp. Hand built Monitors with external crossovers , Volt 250 bass & ABR, Scanspeak 13M8621 Mid & Scanspeak D2905/9300 Hi. HD595 & Beyer 880 (600 ohm) cans.

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Re: My hifi is a disaster 1 problem at a time .

Unread post by Daniel Quinn »

Thanks welder
Its been bloody hard and it still is. It is of course better than the alternative

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Re: My hifi is a disaster 1 problem at a time .

Unread post by Daniel Quinn »

My right knee feels 50% heavier than my left, my foot, toes and ankle don't move, my control of my right arm is neglible below the elbow and the muscles in the right side of my face are currently fucked. Despite these handicaps recovery is now slow and my physio now me alone.

It seems a perfect time for this thread to return to hifi. As I am on the sick, according to the govt, until at least 2021, I've had plenty of time to piss about - 1 handed- with hifi.

I've got a lenco and a rega arm, more of which later. Firstly, I picked up a phono 1 cheap. It's a bit low on volume so I need to change a 470 resistor for a lower value.

I've opened it up and removed the resistor. I wait for the postie now.
Looking at it, I am firstly going to try and isolate the transformer and ultimately make a fascimilie of a phono 2 with two power supplies.

Come on postie

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Latteman
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Re: My hifi is a disaster 1 problem at a time .

Unread post by Latteman »

Would it be easier to transplant the phono board into the pre amp and use the phono 1 as the power stage ?
Analogue Source -
Denon DP47f- Ortofon mc20 supreme
Ifi Zen Phono
Doug Self balanced Pre amp
Akai 4000DS mk2 R2R
Digital Sources- IfI stream, Ifi Neo idsd Dac; Tidal / Radio Paradise
Amplification Nva 30vdc mono blocks
Speakers Lii Audio F-15 in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources

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Latteman
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Re: My hifi is a disaster 1 problem at a time .

Unread post by Latteman »

Be interested in your resistor upgrade- where is this located
Analogue Source -
Denon DP47f- Ortofon mc20 supreme
Ifi Zen Phono
Doug Self balanced Pre amp
Akai 4000DS mk2 R2R
Digital Sources- IfI stream, Ifi Neo idsd Dac; Tidal / Radio Paradise
Amplification Nva 30vdc mono blocks
Speakers Lii Audio F-15 in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources

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Re: My hifi is a disaster 1 problem at a time .

Unread post by Daniel Quinn »

No I don't think so.

And it ain't an upgrade per se and we're it is, is dependant on what age your phono 1is and I only know mine.

_D_S_J_R_
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Re: My hifi is a disaster 1 problem at a time .

Unread post by _D_S_J_R_ »

To change from MM to MC, you need to replace FOUR resistors in total. The 47k MM loading is changed to 470 (some MC's don't mind 47k) (two resistors) and more importantly, two 'gain' resistors are replaced (I'll need to look up the values). USUALLY, the Phono 1 or 2 output on stock MC and MM settings are almost CD player level. To save repeated board removal in future, it's a good idea to do as RD asked me to do, solder some 'vero-pins' in the position of these resistors so they can be changed more easily.

You can't turn a Phono 1 into a Phono 2 without adding quite a bit inside and taking out much of the supply components. Not sure how much I should say here (apologies), but anyone who's seen inside knows the changes.
Hanging on in quiet desperation is the English way...The time has gone, The song is over, Thought I'd something more to say...

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