The Summit Audio EQF-100 is a full range passive
parametric equalizer that utilizes vacuum tube
technology to overcome any gain loss. Providing
4 bands of fully parametric equalization, the
EQF-100 also has both high and low pass filters
which can be bypassed from the signal path.
The EQF-100 uses both solid state and tube technologies
to produce the warm sounds associated with tubes,
while providing the reliability of solid state
devices. This passive tube EQ is an incredibly
warm sounding and accurate equalizer, hand built
in the USA to the most exacting standards.
Whether mixing or tracking, one channel of the
highest quality passive equalization on the
planet will give you that sizzle, air, grind,
warmth, sheen and heat to make your sound really
stand out. Add another channel and you have
the perfect flavor for mastering and final mixing
to take out any digital harshness and add a
signature slice of originality and tone.
| Key
Features: |
• |
4
band equalizer |
• |
HP/LP filter section |
• |
Silent
bypass switch |
• |
Individual
bypass for each band |
• |
Individually
tuned frequencies |
| • |
Transformerless signal path |
• |
3
year warranty |
• |
Hand
crafted in the U.S.A. |
EQF-100
Basic Operating Instructions
Basic setup: Plug the EQF-100
directly into the insert jack or after the main
outputs on the mixing console. Put the insert
send into the XLR input, and the XLR output
back into the insert return of the desired channel.
If outboard preamps are being used, try sending
the output of the preamp into the EQF-100. This
EQ is also perfect before or after a compressor,
and for side chain effects such as de-essing.
Boosting a frequency:
Select which frequency you want to
boost, put the Boost/Cut/Bypass switch to
plus and increase the gain. Use the bandwidth
control to affect more or less of the surrounding
frequencies. A lower number on the bandwidth
knob means a narrower bandwidth. If the frequency
you want to boost is on the high or low band,
set the Shelving/Resonant switch to resonant.
Setting up a low or
high filter: Set all four Boost/Cut/Bypass
switches to Out. Adjust the two filter settings
to the desired frequencies.
Notch filtering:
Find the approximate frequency to be attenuated
(low, mid-low, mid-high, high). Set the bandwidth
to wide (ten), the Boost/Cut/Bypass switch
to Cut (minus), and the filter type to resonant
(high and low bands only). Turn the gain all
the way up (for the highest amount of cut)
and start narrowing the bandwidth. Use the
frequency select and bandwidth to narrow in
on the frequency to be attenuated. Decrease
the gain knob (decreasing the amount of cut)
until the frequency is cut with the least
effect on the surrounding frequencies.
Low
or high shelving: Set the low or
high EQ sections to shelving filter. Select
the frequency where roll-off or boosting is
to begin. Select plus or minus on the Boost/Cut/Bypass
switch and turn up the gain knob to cut or
boost above the high frequency selected or
below the selected low frequency.
| Summit
EQF-100 Specifications |
| Output: |
+4
dBu designed operating level. The output
is balanced using 990 operational amplifiers.
Output impedance is 75 ohms. The recommended
output load is 600 ohms or more. Maximum
output level is +25 dBu. |
| |
|
| Input:
|
The
input is electronically balanced with
an impedance of 20k |
| |
|
| Distortion:
|
Better
than 0.05% THD at 1 kHz (unweighted) |
| |
|
| Frequency
Response: |
5
Hz to 100 kHz (balanced output) |
| |
|
| Noise: |
Less
than -80 dBu |
| |
|
| Band
1 Frequencies: |
33
Hz, 56 Hz, 100 Hz, 180 Hz, 220 Hz, 270
Hz, 390 Hz |
| Band
2 Frequencies: |
250 Hz, 330 Hz, 470 Hz, 560 Hz, 680 Hz,
820 Hz, 1.2 kHz |
| Band
3 Frequencies: |
1
kHz, 1.5 kHz, 1.8 kHz, 2.2 kHz, 2.7 kHz,
3.9 kHz, 5.6 kHz |
| Band
4 Frequencies: |
3.3 kHz, 4.7 kHz, 6.8 kHz, 8.2 kHz, 10
kHz, 12.5 kHz, 15 kHz |
| |
|
| High
Filter: |
8.2
kHz, 12 kHz,18 kHz |
| Low
Filter: |
22
Hz, 47 Hz, 82 Hz |
| |
|
| Panel
Size: |
Standard
19" by 3.5" (2 units of rack
space) |
| |
|
| Depth:
|
10.5"
in addition to user’s I/O cabling
|
| |
|
| Power:
|
35
watts, 115 or 230 volts operation, 50
or 60 Hz |
| |
|
| Shipping
Weight: |
21
lbs. (9.45 kg) |
|
| Specifications
subject to change wihout notice.
|
|
