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PrimaLuna ®
DiaLogue Two
Inputs, Controls & Remote Function
The front panel of the PrimaLuna models is made from machined aluminium, finished to match the
blue metallic chassis. The volume is controlled with the knob on the left, source selection is on the
right. Both volume and source can also be selected by remote control. Your sources are labelled CD,
Tuner, Aux 1, Aux 2, Aux 3 (no functional differences between these) and HT (Pass Thru; volume
fixed!!). The heavy metal system remote control that comes with your PrimaLuna DiaLogue Two
integrated amplifier can be used for selecting sources and adjusting volume and select Triode/UL
mode. Also functions for -future- PrimaLuna cd-players are available. The power switch is located on
the left side of the amp, just behind the front plate.
Looking at the rear panel, you will note you have 5 pairs of stereo inputs, 1 pair of HT Pass Thru, 1 pair
of tape outputs, 1 x ground connection (for optional phono) and the pair of speaker terminals. Attach
the positive (+) from your loudspeaker to the 4 or 8 ohm terminal that most closely matches the
average impedance of your loudspeakers according to their manufacturer's specifications. The
negative (-) from your loudspeaker attaches to the 0 Ohm terminal.
Tip: Experiment using the 4 or 8 Ohm positive (+) terminal to find the best match for your speakers. Do
not make any assumptions. Trust your ears.
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Front Panel
Rear Panel
PrimaLuna ®
DiaLogue Two
Tube Basics
The 12AX7 and 12AU7 tubes will have a life of about 5,000 to 10,000 hours. The lives of power tubes
are more difficult to predict. This also depends on how "gently" or "roughly" you use your amplifier. In
general -under normal conditions- you can say between 2,000 and 3,000 hours.
Here are some tips on using tubes:
•
Do not use treatments on tube pins or in sockets.
•
If you decide to experiment with other tube types, it's best not to swap tubes in and out repeatedly,
as you never want to cycle amplifiers on and off rapidly. They should be left off for at least five
minutes. Further, every time you insert a tube, you stand a chance of loosening the tube sockets.
It's okay to have fun, and we support that, but don't go crazy and swap tubes in and out twenty
times in a day.
•
Do not leave the amplifier on 24 hours a day. Just a short warm-up is required for the PrimaLuna
to get into its groove.
•
Break-in yields improvements. Every tube, when new, needs to be left alone for a little while. So,
when your amplifier is new, or when you re-tube it, it may take a little time to settle in. There is
however no fixed "time rule" for break-in.
•
Please note that tubes can vary electrically, and by plugging in the wrong type of tube (i.e. 6922
for a 12AX7) you can damage the amplifier and void your warranty.
Common Replacements:
12AX7: ECC83, ECC803S, E83CC, 7025, CV4004. You can also use a 5751, but please note that
•
the 5751 is a lower gain tube than a 12AX7 and the sound will be altered.
12AU7: ECC82, ECC802S, E82CC, 5814, 6189, CV4003
•
EL-34: 6CA7, E34LS, E34L. You may also use 6L6GC, 7581A and KT66 though power will drop
•
slightly.
Topview picture of DiaLogue Two
Some tubes and tube sockets
have a "center key" which
must correspond! If you use
"brute" force and misalign, you
will damage important and
expensive parts of your
amplifier!!
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