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RME ADI-2/4 Pro SE - RIAA mode measurements
- Thread starter Rja4000
- Start date
Got it - sometimes it pays to read the manual
User Guide ADI-2/4 Pro SE Manual v1.3 Ch 34.28 (Page 108)
For the cabling situation I mentioned
"The ground wire of [From] the turntable can be connected to any ground point of the unit [ADI-2/4 Pro SE], be it terminals or chassis. The easiest way is to clamp it between the screw connection of the D-sub socket and the breakout cable supplied. In the picture to the right the D-sub connector is not fully attached to better show how it works. After screwing the D-sub connector tight, the fork shoe is fixed and connected to the device’s ground."
[Picture referenced is seen in the manual]
User Guide ADI-2/4 Pro SE Manual v1.3 Ch 34.28 (Page 108)
For the cabling situation I mentioned
"The ground wire of [From] the turntable can be connected to any ground point of the unit [ADI-2/4 Pro SE], be it terminals or chassis. The easiest way is to clamp it between the screw connection of the D-sub socket and the breakout cable supplied. In the picture to the right the D-sub connector is not fully attached to better show how it works. After screwing the D-sub connector tight, the fork shoe is fixed and connected to the device’s ground."
[Picture referenced is seen in the manual]
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You can connect ground to the shield of the 9-Pin connector.
I personally recommend a connection via XLR as this removed hum completely caused by the symmetric input. Please see my post here:
RME ADI-2/4 Pro SE - RIAA mode measurements
Could you use an MC with this? https://precisionsoundlab.com/products/xlr-sockets-mod A high output MC should work, for a low output MC you either need a very low noise linear gain stage of ~20dB or a SUT (transformer).
audiosciencereview.com
Hi you can connect the ground wire to one of the screws of the digital breakout socket (D-type), this is a diagram in the user's manual page 108. Good luck!
Some turntables have two SPDIF (RCA) female connectors for L and R channels and a screw for a spade connector - ground
Some phono-cables have two single wires terminated each end with SPDIF (RCA) male for L and R channels AND a third conductor terminated each end with spade connectors for ground
The AID-2/4 Pro SE has two SPDIF (RCA) female connectors for L and R channels but no point to attach the spade connector for ground
Your guide suggests the solution - User Guide ADI-2/4 Pro SE v1.3 Ch 34.28 (Page 108)
Pearljam5000
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OP
- Thread Starter
- #309
You mean the DAC section only ?
Measurably, a little bit better.
Audibly indistinguishable.
Of course, the 2/4 has 4 balanced out.
Overall, the devices have more differences:
The 2/4 has one more input and output range, it has an IEM level output, a balanced phone connector, a bit more power even.
The ADC is better. Its input impedance is also significantly higher.
And it has this RIAA range + compensation.
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OP
- Thread Starter
- #310
It sounds a bit funny to me that you use "SPDIF (RCA)" to designate what is universally known as a RCA Phono connector (also known as "Cinch connector" in Europe).
Sure, they've been widely adopted for SPDIF (together with BNC connectors).
But Phono was their common naming (and use) way before digital audio was getting common.
RCA connector - Wikipedia
Not so universally?
Yup. It's both, a protocol and a connection specification. And it's a digital-only protocol, not designed to carry an analog signal. That's what the D in S/PDIF stands for -> digital
morillon
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It doesn't seem to me that the connections are specified..Yup. It's both, a protocol and a connection specification. And it's a digital-only protocol, not designed to carry an analog signal. That's what the D in S/PDIF stands for -> digital
in any case the cinch was historically only a very very economical format made for the BF and certainly not for digital in MHz..a heresy because it was not standardized in impedance etc..the very old one bnc at least dedicated to HF etc.
(connectors such as "coaxial-RCA" canaries certified , crimped, for coaxial cables etc. are rather recent)
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Hmm, S/PDIF specifies 75Ω impedance, coax cable on RCA or BNC connectors or Toslink. How is that not a connection specification? And, maximum bandwidth is also specified.
morillon
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the RCA has never been a standardized impedance connector...so this document seems suspicious to me..but bnc use in.pro application yes and for hf ;-)
end for me ;-)
Maybe you'll believe Wikipedia, instead?
In any case, S/PDIF is not common in TT's -- it's a digital protocol and requires an ADC if it is to be used at all.Please cross out SPDIF(RCA) and replace with Phono Jack - It is all analog - Yikes I am Sorry. [place a Shame Emoji here]
That said - I would say RCA connectors or BNC connectors are used to terminate unbalanced cables designed for both analog and digital setups even if the cable spec is different in each - I have jargon cabling overload and will shut up. Ecept to say thanks
That said - I would say RCA connectors or BNC connectors are used to terminate unbalanced cables designed for both analog and digital setups even if the cable spec is different in each - I have jargon cabling overload and will shut up. Ecept to say thanks
