Carver Amazing Line Source Speakers

Kudos, Ozzy, for resolving this very non-obvious problem. Great news, as others have said!

Instead of being 6 installed in the output jumper spaces there were only 4 and the other 2 were put in the RCA input section. Leaving the output without 2 key jumpers. I will add that I bought this unit used from the Music Room. The previous owner must have moved the jumpers.

I’m a little puzzled by this, as I believe your Premate has only four outputs (each in both balanced and unbalanced form), rather than the six that for example are provided in my DEQX HDP-5. And it appears that there **should** be two jumpers on the RCA input section (which adjust the input sensitivity over a fairly small range of 2.3 db). So perhaps the presence of only four jumpers on the output section was correct, but two of them had been placed on jumper blocks that are not used by the Premate.

In any event, as you have seen the output jumpers provide adjustment over a range of 12.5 db, which of course is substantial. And who knows what the consequences would be of simply having no jumpers on two jumper blocks that are in fact used in this design.

Finally, FWIW, I purchased my HDP-5 new and I’ve never changed the jumper settings from their default positions. Those result in max gain on the analog inputs (which I use for LP, in addition to using the digital inputs for other sources), and 4.9 db less than max on the analog outputs, which drive my VAC power amp and (in bypass mode) my Stax headphone amp.

Great work, and enjoy! Best regards,
-- Al

almarg,

Thank you for your comments.

So are you saying you have 8 jumpers?
The circuit board on my Premate identifies it as a HDP-4.
And there is 6 jumpers. 2 each for the high, mid, and bass. The jumpers were originally only on the mid and bass outputs. There was none on the high outputs and 2 were used on the RCA input section.
Perhaps the 2 on the mid is not supposed to be used on the Premate version but I don’t really know.

The instructions shows all 6 on the outputs. But, it also shows using 2 on the RCA input section. I have a total of 6 of the jumpers to use.
On the RCA input section I now have nothing there, but I am only using balanced inputs.


ozzy

@ozzy

Hi Ozzy,

It’s been a long time since I looked inside my unit, and I didn’t pay much attention to the jumpers when I did so. But based on what the manual says, yes, I would assume it has 8 jumpers. I do recall that the circuit board in mine says HDP-4, as you found also. (Mine has a separate circuit board in addition, which provides the processing for the HDP-5’s touchscreen, its ethernet interface, and perhaps some other functions that are not included in the Premate).

The instructions shows all 6 on the outputs. But, it also shows using 2 on the RCA input section. I have a total of 6 of the jumpers to use.

I’m looking at the latest version of the manual ("Rev 1, applies to DEQX-Cal version 3.02"). Since that manual applies to your Premate as well as to my HDP-5 and to other models, and the same board is used in both of our units, but the Premate provides two stereo pairs of outputs while the HDP-5 provides three, it seems evident that only 4 of the 6 output jumpers shown in the manual are necessary for the Premate. And therefore perhaps only those 4 (plus the two on the inputs) were provided initially.

The jumpers were originally only on the mid and bass outputs. There was none on the high outputs and 2 were used on the RCA input section.

Since the two sets of outputs on your unit are identified on the rear panel as being for mains and subs, I would have thought that the way you originally found the jumpers to have been placed (mid and bass, plus two for the RCA analog inputs) would have been correct.

So as I said in my previous post I’m puzzled. It sounds like the way you found all of the jumpers initially was exactly where I would have expected them to be in the Premate.

Best regards,
-- Al

almarg,

Thanks but no the high- output needs the jumpers in place. Without them the DEQX unit will output considerable hiss through the balanced outputs. But, perhaps the mid jumpers are not needed with my model.

I sent a email to DEQX on Sunday asking for advise. I hope they answer.

ozzy

@ozzy

I just noticed that on the rear panel of the Premate the "main" outputs are also identified as L2/R2, and the "sub" outputs as L1/R1. And the jumper block information on page 166 of the manual of course uses L and R designations, rather than bass, mids, and highs.

So when you referred to the jumpers initially being on the mids and bass, are you sure that they were on L1/R1 and L2/R2, as opposed to L3/R3 and L2/R2?

Best regards,
-- Al