Empirical Labs EL-Rx User Manual
Docderr, Empirical labs, Warranty and factory service
DocDerr
Warranty and Factory Service
This Empirical Labs Inc. product is covered by a limited warranty covering full parts and labor
for 3 years from the purchase date. The warranty is only effective if the owner has returned his or her
warranty card. See warranty card for further details.
Should problems arise, call Empirical Labs at 973 541 9447 or contact us from our website
below, to obtain an RA number (Return Authorization). Pack the unit up well
1
, with a note explaining
the problem and return to Empirical Labs for repair. Include your name, address, phone number,
and the date of purchase, and RA number. Send the unit with freight prepaid to the address below:
Empirical Labs (Repairs)
41 N. Beverwyck Rd.
Lake Hiawatha, NJ. 07034
We can also be reached on the Web at www.empiricallabs.com by selecting “CONTACT” and then
“Techsupport” to email repair requests or information to Empirical Labs. The repaired unit will be
returned to you via UPS Ground at our expense.
1) Pack the unit in original carton if possible. Otherwise, pack with bubble wrap and/or foam in a
thick corrugated box. Shipping people are absolutely brutal to large packages and you must take
every precaution against constant dropping, throwing, and crushing. We are not liable for products
damaged during shipping.
Other Empirical Labs Products:
1)
Distressor EL8 - Classic Knee Compressor. Used on thousands of major records!
2)
Distressor EL8X - The original Distressor on Steroids. Brit Mode and Image Link added.
3)
Fatso Jr & UBK Fatso – Two channels of Full Analog Tape Simulation and Optimization
4)
Lil FrEQ – An EQ with 8 Sections of unparalleled tonal contouring.
5)
DerrEsser – Smooth De-Essing and High frequency limiting.
6)
EL500 – API 500 Series Compatible 2 space powered rack. Amazing with the DocDerr!
7)
Mike-E – Digitally Controlled Mic Preamp with our unique CompSat dynamics section.
8)
UA Fatso Plugin – Our first software offering. Real analog musicality.
Upgrades
There are elements inside the DocDerr that were designed to be "modifiable". The compressor
circuit has provided for many alternate ratios and time constants. Although we cannot guarantee it
at this time, Empirical Labs may release information and hardware options that will allow owners to
alter the EQ Frequencies, and compressor parameters of their DocDerr. If you have sent in a
properly filled out warranty card, we will keep you apprised of these developments.
Do not attempt to modify or make adjustments to your DocDerr until you have notified Empirical
Labs and been sent the necessary information. Any sign of internal adjustment by the user will void
your warranty, with the exception of changing the Jumpers, detailed in manual.
Technology for the Artist
DocDerr
Multi-purpose Tone Doctor…
and an Acoustic Musician’s Solution in the digital age
.
INDEX
Page
Item
4-6 Example Settings of the DocDerr
7-8 Recall Sheet
10 Block Diagram & Section Details
13 DocDerr Pet Tricks & Troubleshooting
Empirical Labs -
Technology for the Artist
2
D
o
c
D
e
7
-2
2
-5
5
7
10
0
14
14
+
0
-
dB
1
-
7
-
0
0
(Blend)
MF
IN
K
K
K
K
K
K
K
K
K K
Mix
1
-
7
-
-2
2
-5
5
7
10
14
14
+
0
-
dB
1
-
7
-
12
16
HF
6
20
BAD!
LF
9
3
160
20
0
80
12
5
300
40
0
500 250
50
0
750
1
2
3
4
3.5
5.2
6.5
8
10
1
15
KHz
0
1
6
7
5
9
3
8
4
1
1
2
26
6
7
5
9
3
8
4
10
0
1
-2
2
-5
5
7
10
0
14
14
+
0
-
dB
70 100
Technology for the Artist