"For my needs your pre blew them all
Elixir is just gorgeous, big and open..."
preamplifier module is an excellent compliment to the "fatter"
sound of many modules now available in the API*
500VPR Series format and has been designed to provide exceptionally
low noise wide bandwidth amplification of microphone and instrument signals.
The elixir will suit those who desire
a recording preamplifier where just a slight amount of bass colour is
added to the original signal whilst retaining full treble extension and
a smooth midrange - warm, sweet, liquid - the perfect blend.
circuit design uses two BE40
True Class A amplifiers in a transformeless input arrangement followed
by two newly designed BE50 True Class A high current audio buffers that
drive a Lundahl* LL1517
output transformer. The topology is balanced throughout with the transformer
providing the balanced to balanced output conversion and common mode rejection.
This set up is quite different to most single amplifier 500 series preamps
and ensures excellent transient response, extended bandwidth and very
good induced noise rejection.
As with all our mic preamplifier designs, we like to think of them
as an extension to the connected microphone - not a separate entity.
Looking at the distortion specifications, the presence of the Lundahl*
output transformer adds a subtle amount of harmonic at low frequencies
thereby enhancing the bottom end but without sacrificing the wide bandwith
needed for good clarity and transient response in the top end.
The output configuration of the elixir
results in a maximum output level of +34dBu before clipping, which means
it can comfortably deliver clean audio into all analogue or digital recorders
Gain range of the microphone input is 22dB to 70dB or -2dB to 50dB with
the -20dB pad selected. More than enough for ribbon microphones.
The input impedance (selected with the IN Z switch) is 4000 ohms
in the H position or 1200 ohms in the L position.
The instrument input on the elixir
features a "bootstrapped FET" high to low impedance convertor
that then feeds the elixir amplifier
stages. Selection of the instrument input is automatic when a jack is
inserted on the front panel input.
Gain range of the instrument input is 10db less than the mic input at
12dB to 60dB. The input impedance is switchable 1,000,000 ohms or 20,000
ohms with the IN Z switch.
power consumption is higher than most other 500 series modules and this
may stress some rack power supplies depending on what other modules are
fitted. Please check the following list to see if it will work OK in your
Lunchbox 6B - recommend only two elixir
modules are fitted along with other modules.
API 500VPR with L200PS
- no problems.
Pro Audio Revolver - no problems.
Rack & Track Pack - no problems if you have the 3 amp external
6 & 11 Slot Racks - not tested, check with B.A.E. for power capacity.
Audio Sweet 10 - recommend up to 6 elixirs
in this rack along with other modules. Mount elixirs
at the left side of the rack to avoid power supply noise.
racks - not tested, but reported to be OK with up to 6 elixirs
500HR - not recommended due to power supply noise issues.
API* 500VPR Series
rack module format - plug in and play!
technology - not a clone or copy of products from the past.
hi-bias wide bandwidth differential Class A amplifiers.
Matched and selected
input, straightline single path.
- High performance Lundahl* output
41 position max
trimmed GAIN control.
Class A amplifiers for the input/output functions.
Output Mute and
Hi/Lo input impedance switches.
- Accurate four LED peak level
Min Gain Mic = +22dB (-2dB with pad in)
Max Gain Mic = +70dB
Min Gain Instrument = +12dB (-3dB with pad in)
Max Gain Instrument = +60dB
Maximum Output Level = +34dBu into 3k ohm load.
Frequency Response Mic = 10Hz to 300kHz @ 20dB gain
Frequency Response Instrument = 10Hz to 120kHz @ 20dB
Slew Rate = 30V/uS @ +20dBu output level
Harmonic Distortion measured at -20dBu input level, gain adjusted
for +10dBu output level
Mic = 0.15% @ 100Hz, 0.01% @
1kHz, 0.005% @ 10kHz
Instrument = 0.15% @ 100Hz, 0.015%
@ 1kHz, 0.015% @10kHz
EIN Mic = -132.5dB A wtg, 150ohm source Z.
Signal to Noise Ratio Mic = -73dB A wtg, input shorted.
Signal to Noise Ratio Instrument = -76dB A wtg, input
CMNR Mic = -78dB @ 100Hz, -100dB @ 1kHz, -100dB @ 10kHz.
Input Impedance Mic = 4k ohms/1k2 ohms switchable.
Input Impedance Instrument = 1MEG ohms/20k ohms switchable.
Controls = Gain, Mute, Phase Reverse, 20dB input Pad,
Input impedance, Phantom pwr.
Indicators = 4 LED peak reading meter.
Size = (37Wx132H). Fits 1 space in API(TM) 500 series
Power requirements = 150mA +/- 15-18 volts DC, as supplied
by frame power supply.
Specifications are typical of a production unit and are subject
to change without notice.
0dBu reference = 0.775 volts RMS