Using Flatcap 2X for 2 Pre amp supply : NAC-62 and NAC-112X, How about the connection?

[primemerkava]

I already got the clarity, so it’s like this: NAC-112X, NAP-150X, and Flatcap 2 are indeed 3 series, 1 set, if there is a CD, the pair is CD5i, while the NAC-122X, NAP-150X and Flatcap 2X are 3 series also, if there is a partner CD5X. Now the difference in supply voltage from Flatcap and Flatcap 2X is, if Flatcap 2X = 4 x 24VDC, where the first 2 x24VDC is for supply to NAC-122X while the second 2x24VDC is for CD5X because CD5X supply is 24VDC. While Flatcap 2 = 2 x 24VDC and 2 x 22VDC, where the first 2 x 24VDC is for supply to NAC-112X and 2 x 22VDC for CD5i because CD5i supply is 22VDC.
So if you want to supply to 2 Pre-Amps, the conclusion must be to use Flatcap 2X, because all PreAmp Naim uses 24VDC supply both CB, Olive and Classic

is my conclusion correct?

[primemerkava]

@gthack

Notwithstanding recommendations above. As I understand it, and I really do not have first hand experience of separate pre/power, power and signal have to be handled by an associated pair of connectors. You should not just use one of the pair for power only, as I think the OP is suggesting in one of the pics

The first connector (e.g. socket 1) of the associated connector pair takes power from the PSU to the connected box and also receives the connected box’s signal output. The second connector of the pair on the PSU (e.g. socket 2) then takes signal to whatever you’re wanting to take the output from the box you’re powering, to.

The 2X had two “sets” of these connectors, the first having one signal in, 3 signal outs (allowing routing of the single source on socket 1, to 3 destinations), the second set just having a single signal out (allowing routing of its source on socket 5 to a single destination)

I think the line the OP has from the NAC62 to the 2X (socket 5) will be taking signal output (hm, attenuated by the volume pot… maybe that’s the issue with using the 2X here, as it was intended for a line level output of a CD player?) to the 2X, but that output will not find its way to socket 2 or socket 3 as the diagram “hopefully” depicts.

But, I really should double caveat this!!! Maybe even triple caveat it X)

…and reading back up the thread, manual seems clear the second set of connectors only listed for source components, not powering a preamp

…also deleted some stuff I wasn’t sure about!

how about my 2nd wiring opinion like this

[PerF]

@primemerkava

I already got the clarity, so it’s like this: NAC-112X, NAP-150X, and Flatcap 2 are indeed 3 series, 1 set, if there is a CD, the pair is CD5i, while the NAC-122X, NAP-150X and Flatcap 2X are 3 series also, if there is a partner CD5X. Now the difference in supply voltage from Flatcap and Flatcap 2X is, if Flatcap 2X = 4 x 24VDC, where the first 2 x24VDC is for supply to NAC-122X while the second 2x24VDC is for CD5X because CD5X supply is 24VDC. While Flatcap 2 = 2 x 24VDC and 2 x 22VDC, where the first 2 x 24VDC is for supply to NAC-112X and 2 x 22VDC for CD5i because CD5i supply is 22VDC.
So if you want to supply to 2 Pre-Amps, the conclusion must be to use Flatcap 2X, because all PreAmp Naim uses 24VDC supply both CB, Olive and Classic

is my conclusion correct?

Confused

[PerF]

You can’t power a CD5i with any external power supply

[anon4489532]

No. The signal must go via the power supply. Just forget wiring two preamps to a Flatcap. Use it on one or the other or get a Hicap for the 62.

[Richard.Dane]

Quite right.

Primemerkava, whatever you do, never connect a Naim power amp directly to a pre-amp if the pre-amp is also being powered by a power supply, otherwise you end up with two supplies, impaired performance and overs-stressed regulators, which may well cause premature component failure.

As previously written, you shouldn’t try powering two pre-amps from the same power supply. It’s not designed that way.

[primemerkava]

@PerF

You can’t power a CD5i with any external power supply

sorry, CD5 I meant
thank you for correcting

[primemerkava]

@Richard.Dane

Quite right.

Primemerkava, whatever you do, never connect a Naim power amp directly to a pre-amp if the pre-amp is also being powered by a power supply, otherwise you end up with two supplies, impaired performance and overs-stressed regulators, which may well cause premature component failure.

As previously written, you shouldn’t try powering two pre-amps from the same power supply. It’s not designed that way.

Yes, I think I’d better left every set to work alone

NAC-62/NAP-140 and searching for CB Hicap
and
NAC-112X/NAP-150X packed with Flatcap, sorry not Flatcap 2 as I mentioned above

[robert_h]

Just to make it abundantly clear:
a flatcap or hicap gives power (electricity) to the nac (preamp) through a snaic 5, and gets back the preamp signal through the same snaic 5.
the flatcap or hicap then passes on the same preamp signal from the nac to the nap (power amp) via a snaic 4.

When a flatcap is powering a cd player, it is just supplying power (electricity); the source signal from the cd player doesnt go anywhere other than direct to the preamp via another interconnect.

Hence a flatcap can power a single preamp and/or a single cd player, but no other combination.

[primemerkava]

@robert_h

Just to make it abundantly clear:
a flatcap or hicap gives power (electricity) to the nac (preamp) through a snaic 5, and gets back the preamp signal through the same snaic 5.
the flatcap or hicap then passes on the same preamp signal from the nac to the nap (power amp) via a snaic 4.

When a flatcap is powering a cd player, it is just supplying power (electricity); the source signal from the cd player doesnt go anywhere other than direct to the preamp via another interconnect.

Hence a flatcap can power a single preamp and/or a single cd player, but no other combination.

thank you so much to make a clear conclusion