Da-capo issue (John W?)

[mr-mac]

oooo new input card as well, very very cool

John, Maybe you could email me with an aprox idea of cost so I can start saving.

Cheers

John

PS does it have facility for changing the FPGA filter or will it be fixed to one pre-designated one (not that it really makes a massive diffrence I am intrested anyway)

[JohnW]

Hi John,

A new input card (Double Width) is required as the Dacapo's CS8412 only supports up to 55 KHz, the new card has optical clock lock, 2 optical inputs and one electrical.

The FPGA’s cannot be replaced (no reason to change), however the filter and modulator can be upgrade if we develop better filters by simply changing the EEPROM which is socketed.

John

[mr-mac]

Brilliant, yeah I was meaning the programming of it rather than the chip itself...

Excellent stuff...

Thanks for all you info and time.

John

[WishfulAudio]

Dear John

My PT da Capo has suffered capacitor leakage damage
to tracks underlying the bank of power supply capacitors.
Will obtaining your new board get around the damage?

Thanks

Alistair p

[mr-mac]

The new items are only the filter module and digital input card so no it won't fix it....

I belive john W repaired some damaged ones before (though I know he is quite busy at the moment).

I am sure he will be along soon to add comment, maybe someone knows of someone in this country who could repair the circuit as well.

John

[WishfulAudio]

That is hopeful.
I get a bit down looking at it.

But how come the battery pack is now obsolete??
Or am I terminally confused...

Did you fit the filter /double width board to your da Capo?

Thanks for the optimism

Alistair p.

[mr-mac]

Battery pack is not obsolete.

I have a cardinal transport, Da-Capo and DC Psu.

The new units are just the Filter module (silver encase module inside Da-capo that could be changed and a new Digital input card (in place of the current card) to allow up to 192khz and DSD input.

There was talk early in this thread of a full replacement DAC to go in the Da-capo case but nothing happened about that (tbh I wanted to keep the Da-capo working)...

Anyway John Westlake the Da-capo designer recently bought one himself and was also rather impressed at how good it sounded and is making the new card and filter for his own R&D and will build a few extra at cost for a few people who wanted them....

This is ongoing and as you will see in prev post from John W he only just said he would get ball rolling and showed the design....

Is yours an AC unit or does it have the DC PSU in 2nd box? Whatever it is if it can be repaired it will need all capacitors changed to prevent any more damage....

John

[WishfulAudio]

John

I have an Ordinal with a clock out, a da Capo (no clock) and a/c and DC psu and a Cardinal.

Ordinal is not happy.
da Capo has track damage but psu box.
I thought I would obtain a cheap DAC and work on getting
a good PT da Capo = I now have 3 filters!

Thanks for all your advice - I will stick at it!

I will see if Joohn Westlake will put me down for a board.

Best

Alistair

[mr-mac]

The digital input card with clock out in the ordinal will work in the da-capo to connect to the cardinal (once you have a working one).

Filters (you will probs already know from this thread) but the order of preferance as listed by JW:-

1. HDCD (PMD100)

2. Yamaha YSF210 (guess this is 22bit one)

3. 24 Bit filter

4. 18 Bit Yamaha

5. 1307 - don't bother

6. 20 Bit - don't bother

[JohnW]

Hi WishfulAudio,

As long as the DAC under the potted section is ok, then you should be able to repair the Dacapo board, no matter how bad the PCB tracks have been damaged.

If you have no luck, then you can send to me in HK, and I can repair FOC, so long as you dont mind waiting alittle.... I'm not being very reliable at the moment - with too many projects.

PCB's for the Filter sections are back from the vendor - will need to build them at some stage - still need to design input board, however filter will work in 44.1KHz with standard input cards.

What filters do you have? interested in loaning a HDCD filter to evaluate the new filter design...

Mr mac, thanks for filling in while I was unable to answer, everything you posted is correct,

Yamaha YSF210 is the 22Bit filter,

JohnW