Input & sensitivity

[V-bro]

Here:



------X-max. can be several meters on any driver, too bad it can be done only once...------

[V-bro]

The most used values a bit larger:


------X-max. can be several meters on any driver, too bad it can be done only once...------

[Lulu]

I have a sound card with this specifications :
# High sensitive input stage (< 0.2Vpp input level)
# Output voltage coaxial 0.8 V, XLR 3.5 V
I'm using it with jack-RCA and plan to use it with my amp5 when it will be mounted. I have soldered the "standard use" resistors. Have I done a mistake or the specifications aren't useless.

[The worst foe lies within the self]

[more10]

quote:Originally posted by thomaseliot
[br]I collected other values for input gain fine tuning.

Somebody measured other sources?

I have been playing around with my new Velleman PCS100 testing my HTPC motherboard soundcard. It is a Gigabyte GA-MA69GM-S2H. It has got Realtek 889A sound with 106 dB SNR. Only Gigabyte sells motherboards with this chip. I got 1,5 VRMS, at 1 kHz which means 4,2 V ptp. I guess I don't have to do anything to adjust my amp9.

[kifysara]

quote:Originally posted by jan
[br]- Stationary CD players, 2V RMS / 5V ptp

I did some quick research about it.
Just to confirm Jan's post, here are my findings (from product manuals, brochures etc.):

Denon DVD-5910 DVD SACD
2VRMS
---------
Denon DCD-SA1 SACD
2V (balanced & unbalanced)
---------

---------
Marantz SA7001, output unbalanced
SACD: 2.3VRMS
CD: 2.3VRMS
---------

---------
Musical Fidelity A5 CD
Audio output at digital 0dB level: 2.15VRMS at 1kHz nominal
---------
MF A5.5 CD
Output digital 0dB level: 2.18 VRMS at 1kHz nominal
---------
MF KW DM25 DAC
Audio output at digital 0dB level 2.2VRMS at 1kHz nominal
---------

---------
Linn Majik CD
2.0 VRMS
---------

---------
Teac Esoteric (SA-10 & SZ-1)
Maximum output level (RCA + XLR): 2.2VRMS (@ 1.1kHz, full scale)
---------
Teac Esoteric (X-03 & UX-3)
Maximum output level (RCA + XLR): 2.5Vrms (@ 1.1kHz, full scale)
---------
Teac Esoteric X-01
Maximum output level (@ 1.1kHz, full scale)
RCA: 2.5Vrms
XLR: 2.3Vrms
---------

---------
Audio Research (CD3 MkII & CD7)
OUTPUTS, ANALOG: (Stereo)
Balanced XLR 5.4V RMS (+14.6dBv) max.
Single-Ended RCA 2.7V RMS (+8.6dBv) max.
---------

---------
Cary Audio (CDP1 & CD306 SACD & CD 303/300)
S-E 3.0V RMS, Balanced 6.0V RMS
---------

---------
Accuphase (DP-500 & DP-700)
2.5V (rca & xlr)
---------

---------
Bryston BCD-1
2.3V Unbalanced - 4.6V Balanced
---------

---------
Rega (Apollo & Saturn)
2V
---------

---------
Harman/Kardon HD970
2V
---------

---------
Advance-Acoustic MCD-203II
1.8V
---------

---------
Naim CD5i
2.0Vrms @ 1kHz
---------
Naim CD5x
2.1Vrms @ 1 kHz
---------

---------
Meridian G06
2.3Vrms



Not all manufactures publish those number, but we don't need them I guess since the trend is pretty evident.

[kifysara]

And the same, more or less, goes for stand-alone Hi-Fi DACs (though beware of those with Pro-audio origins):

-----------------
Benchmark DAC1 USB

Balanced:
Output Level Range (at 0 dBFS) In Calibrated Mode +9 to +29 dBu (Attenuator off)
-1 to +19 dBu (Attenuator = 10 dB)
-11 to +9 dBu (Attenuator = 20 dB)
-21 to -1 dBu (Attenuator = 30 dB)
Output Level Range (at 0 dBFS) In Variable Mode Off to +29 dBu (Attenuator off)
Off to +19 dBu (Attenuator = 10 dB)
Off to +9 dBu (Attenuator = 20 dB)
Off to -1 dBu (Attenuator = 30 dB)

Unbalanced:
Output Level Range (at 0 dBFS) In Calibrated Mode -6 dBu to +13.5 dBu
Output Level Range (at 0 dBFS) In Variable Mode Off to +11 dBu
-----------------

-----------------
Aqvox USB 2 D/A MKII
2Vrms
-----------------

-----------------
CI Audio VDA2
2.25Vrms SE, 4.5Vrms Balanced
-----------------

-----------------
April Music Stello DA220MkII
1.3Vrms
-----------------

-----------------
Musical Fidelity X-DACV3
2.2Vrms
-----------------

[kifysara]

I also happen to have the numbers of the Logitech music streaming devices (I'm planning to use a Squeezebox as my main source - CDp, Turntable and Tuner will be used rarely in comparison).

--------------------------
Logitech Squeezebox & Duet

6.0Vpeak-to-peak line-level signals
(just a bit over 2Vrms)
--------------------------
Logitech Transporter

Balanced: 3Vrms (8.5Vpp)
Unbalanced: 2Vrms (5.7Vpp)
--------------------------