Trident 80B EQ 500 Series User manual

L E G E N D A R Y E Q U A L I Z A T I O N
80B 500 Series EQ User Manual

The Equalizer
For those not familiar with the dierence
between a shelving and peaking equaliser,
the dierences are as follows. A shelving
equaliser boosts (or attenuates) all fre-
quencies equally, above or below a certain
point. The frequency specified for a shelv-
ing equaliser circuit is usually at the point
where it eectively reaches its ‘shelf’ state.
A ‘high shelf’ EQ boosts/cuts high frequen-
cies and a ‘low shelf’ type boosts/cuts low
frequencies. This type of circuit is very pop-
ular in hi-fi systems but is also actually high-
ly musical, when applied in a recording en-
vironment. In contrast, a peaking equaliser
is one that, as its name implies, has a centre
frequency that is boosted or attenuated
more than others.
The frequency range over which it reach-
es its peak and then falls down is known
as the bandwidth (or ‘Q’). Because this
type of design reaches a peak and then
falls away, it is possible with this type of
circuit to ‘home in’ on particular frequen-
cies and make adjustments without af-
fecting those around them. This can be
particularly useful when working with in-
struments such as bass guitars and snare
drums. By incorporating both shelving
and peaking equalisers into the design of
the 80B, it is possible to get the best of
both types of design.
Operating
The Equalizer
2Trident Audio Developments | 80B EQ 500 Series User Manual
Begin with all boost/cut controls - those with centre detents, set to their
mid way ‘0’ positions. Adjust the low and high mid frequency sweep
controls to their minimum positions (fully anticlockwise). The 50Hz high
pass ‘Filter’ switch should be in the out position. Set the frequency select
switches controlling the high and low shelving sections, to 120Hz and
12kHz respectively. Lastly, set the ‘EQ’ switch to the ‘in’ position (the as-
sociated LED will illuminate).

3Trident Audio Developments | 80B EQ 500 Series User Manual
Operating The Equalizer
Rotation of the high frequency shelving control in a clockwise direction
emphasises high frequencies, while turning the control in an anti-clock-
wise direction from centre attenuates high frequencies.
Operating the ‘frequency select’ switch in the high frequency section
introduces a subtle change of emphasis to the aected high frequencies,
as the shelving ‘knee’ is changed from 12kHz to 5kHz. Likewise, rotating
the low frequency shelving control in a clockwise direction will emphasise
low frequencies, while turning the control in an anti-clockwise direction
from centre attenuates low frequencies. Adjusting the ‘frequency select’
switch in the low section introduces a subtle change of emphasis on the
aected low frequencies by altering the shelving point from 120Hz down
to 60Hz.
The ‘low mid’ and ‘high mid’ equaliser sections are peaking filters. Adjust-
ment of their parameters is achieved by use of the boost/cut knob and
its associated frequency sweep knob. Boost or cut of a given frequency is
performed by moving that control from its centre detent position: clock-
wise for boost, anti-clockwise to cut. The frequency to be boosted or cut
is selected by the frequency sweep control knob. The range of frequen-
cies of the ‘low mid’ control extends from 100Hz up to 1.5kHz.
For the ‘high mid’ sweep, the frequency range begins at 1kHz (overlap-
ping with the low mid section) and continues up to 15kHz.
The Series 80B 500 Series EQ incorporates a classic four band equalis-
er which is identical to that employed in the Trident Series 80 console.
It consists of frequency switchable high and low pass shelving sections,
coupled with two swept low and high mid range bands and a switchable
50Hz, 12dB per octave filter. Both swept midranges have been carefully
chosen for maximum eect on music programme and a good degree of
overlap is provided.
Finally, selecting the ‘Filter’ switch introduces a smooth, 50Hz, 12dB/
octave roll-o to eectively eliminate ‘rumble’ caused by, among other
things, someone’s feet moving about near a microphone stand, nearby
trac noise and AC systems. The amount of boost (accentuation) or cut
(attenuation) that is applied to the audio signal is entirely dependent on
the programme content and it is not our intention to advise on this. Ap-
plication of equalisation is a very subjective matter and is best learned by
experiment. The equaliser bypass switch ‘EQ’ is a useful facility for com-
paring the signal before and after the application of equalization.

Operating The Equalizer
Rotation of the high frequency shelving control in a clockwise direction
emphasises high frequencies, while turning the control in an anti-clock-
wise direction from centre attenuates high frequencies.
Operating the ‘frequency select’ switch in the high frequency section
introduces a subtle change of emphasis to the aected high frequencies,
as the shelving ‘knee’ is changed from 12kHz to SkHz. Likewise, rotating
the low frequency shelving control in a clockwise direction will emphasise
low frequencies, while turning the control in an anti-clockwise direction
from centre attenuates low frequencies. Adjusting the ‘frequency select’
switch in the low section introduces a subtle change of emphasis on the
aected low frequencies by altering the shelving point from 120Hz down
to 60Hz.
The ‘low mid’ and ‘high mid’ equaliser sections are peaking filters. Adjust-
ment of their parameters is achieved by use of the boostjcut knob and its
associated frequency sweep knob. Boost or cut of a given frequency is
performed by moving that control from its centre detent position: clock-
wise for boost, anti-clockwise to cut. The frequency to be boosted or cut
is selected by the frequency sweep control knob. The range of frequen-
cies of the ‘low mid’ control extends from 100Hz up to 1.5kHz.
For the ‘high mid’ sweep, the frequency range begins at 1kHz (overlap-
ping with the low mid section) and continues up to 15kHz.
The Series 80B 500 Series EQ incorporates a classic four band equalis-
er which is identicalto that employed in the Trident Series 80 console.
It consists of frequency switchable high and low pass shelving sections,
coupled with two swept low and high mid range bands and a switchable
50Hz, 12dB per octave filter. Both swept midranges have been carefully
chosen for maximum eect on music programme and a good degree of
overlap is provided.
Finally, selecting the ‘Filter’ switch introduces a smooth, 50Hz, 12dB/
octave roll-o to eectively eliminate ‘rumble’ caused by, among other
things, someone’s feet moving about near a microphone stand, nearby
trac noise and AC systems. The amount of boost (accentuation) or cut
(attenuation) that is applied to the audio signal is entirely dependent on
the programme content and it is not our intention to advise on this. Ap-
plication of equalisation is a very subjective matter and is best learned by
experiment. The equaliser bypass switch ‘EQ’ is a useful facility for com-
paring the signal before and after the application of equalization.
4Trident Audio Developments | 80B EQ 500 Series User Manual

5Trident Audio Developments | 80B EQ 500 Series User Manual
Warranty
Trident Audio Developments Limited Warranty Statement
The following outlines the warranty periods for all Trident Analogue electronics. All warranty ser-
vice requires Proof of Purchase. Proof of purchase is the original Bill of Sale, or Sales Invoice
from an authorized dealer.
Trident Audio Developments electronics are covered by a limited warranty against defects in
materials and workmanship (parts and labor) for a period of One (1) Year from the date the unit is
sold to the Dealer or original purchaser only.
Acceptable registration is met by registering online
at http://www.tridentaudiodevelopments.com/ product-registration/
The terms and conditions of this limited warranty are:
1. The warranty applies to Trident Audio Developments Electronics purchased from Trident Au-
dio or authorized Trident Audio dealers.
2. The warranty covers any defects in materials and workmanship and is limited to the repair or
replacement of the original registered product. In its sole discretion, Trident may either repair or
replace the product with a product of the same model or replace the product with a new model of
a similar specification when the same model is no longer available.
3. The warranty does not cover any of the following: damage caused by the user: spillages or
moisture damage; neglect, abuse or misuse, including but not limited to the failure to use the
product(s) for its normal purpose in accordance with the manufacturer’s instructions for use.
Failure to properly maintain the product in accordance with the manufacturer’s instructions,
and/or the failure to use the products in accordance with the manufacturer’s specifications;
normal wear and tear; use of products with incompatible or faulty equipment; unauthorized mod-
ifications; repairs conducted by unauthorized persons or service center’s; the model and/or
serial number being altered, removed or made illegible; accidents; acts of God or any cause
beyond the control of Trident Audio Developments. It does not cover damage caused by con-
necting to an improper power voltage supply, cosmetic defects, such as paint finish, and gen-
eral wear and tear, as well as certain consumables not covered under warranty such as fuses,
faders, pots, switches and meter bulbs. Mechanical components including but not limited to a
consumable item; potentiometers, faders and switches are covered by a 90-day warranty. Fail-
ure to maintain, damage; neglect, abuse or misuse of any mechanical components in this time
will result in a void warranty. Trident recommends regular service of the product and in particular;
regular service of the mechanical components such as potentiometers and faders.
4. The warranty is applicable to the original purchaser throughout the warranty period as stated
above or until original owner resells product. If a unit is received for warranty repair, and after
complete examination and testing, no problem is found with the unit, customer will be charged
for time labor plus return shipping costs, presuming initial user error falsely caused the unit to
be determined faulty.
5. The warranty does not aect any statutory rights the original purchaser may have in ac-
cordance with the law applicable in the jurisdiction where the product was purchased, or any
rights the original purchaser may have against the authorized dealer pursuant to their original
purchase agreement. This warranty gives you specific legal rights and you may also have other
rights, which vary from state to state, and or country to country.

Warranty
6. Any claim pursuant to this warranty from the date of purchase of any Trident Audio De-
velopments product must be returned, together with the original proof of purchase, to the
authorized Trident Audio dealer that sold the product, or to the Trident Audio service center
in the USA or our UK service center. All returns to Trident Audio, or any Trident Audio Service
Center must be in the original packing, accompanied by the issued Repair Authorization, and
must be shipped to the address specified on the Return Authorization via insured freight at the
customer’s own expense. Factory original packaging can be ordered from Trident Audio, Inc.
Customer will be charged for new factory original packaging if customer fails to ship product
to Trident Audio in the original factory packaging. Trident Audio will not pay for express or
overnight delivery.
7. Once the product has been received, the authorized Trident Audio service center will assess
the warranty claim and arrange to either repair or replace in accordance with the warranty pro-
cedure prescribed by Trident Audio for their authorized service center network. The warranty
replacement will be conducted by the authorized Trident Audio service center as promptly as
possible and within a reasonable time from the date of submission of the warranty claim. In all
circumstances, a claimant under this warranty will be liable for all costs in delivering their Trident
Audio brand product to the authorized service center for warranty replacement and for all
costs in collecting the repaired/replacement Trident Audio product from that authorized Tri-
dent Audio service center. Trident Audio service center may waive the cost of return shipping
after full inspection to determine cause of warranty.
8. Trident Audio will not accept any warranty replacement without the original proof or pur-
chase of the Trident Audio product, and without the registration of the Trident Audio product
within 30 days of purchase by mail, or online. It is the original purchaser’s responsibility to keep
the original proof of purchase or copy safe at all times, as Trident Audio is not obliged to provide
a replacement of the original proof of purchase.
9. The warrantor assumes no liability for property damage or any other incidental or conse-
quential damage whatsoever which may result from failure of this product.
10. A Trident Audio product that was not purchased through an authorized and legitimate sales
channel is considered “Grey Market”. Warranties for Trident Audio Products purchased outside
the USA will be covered by its Trident Audio UK Service Center. Trident Audio product orig-
inally sold to the USA market and consequently resold overseas forfeits its warranty. “Grey
Market” purchases are not covered by any warranty. In the case that a Trident Audio Product
must be returned, it should be returned to the original place of purchase, or the Trident Audio
factory, with proper return authorization. Returns from outside the USA, customer shall adhere
to specific shipping, customs, and commercial invoicing instructions given with the Return
Authorization. Trident Audio will not be responsible for transportation costs or customs fees
related to any importation or reexportation charges whatsoever.
11. Trident Audio shall not be liable for damages in excess of the purchase price of the Trident
Audio product arising out of the use or inability to use the Trident Audio product.
12. Governing Laws
Any dispute, controversy or claim arising out of or relating to this Agreement shall be decided
by arbitration in Los Angeles, California, in accordance with the rules of the American Arbitration
Association (the “Association) then in eect. Any award rendered by the Association shall be final,
binding and not subject to appeal, and may be enforced by any court of competent jurisdiction.
For Tech Support and Repair Authorization, please contact: US Service & Sales
1845 W. 169th Street Gardena, CA 90247 at +1 (310) 323-9050
or sales@tridentaudiodevelopments.com
Trident Audio Developments is a registered trademark of PMI Audio Group ©2010 PMI Audio Group
6Trident Audio Developments | 80B EQ 500 Series User Manual


Safety - This product is intended for professional use only and it is assumed
that the user is familiar with the 500 Series Modular Rack system. Always
switch o the rack power before inserting or removing this (or any other)
module or damage may occur. Do not expose this product to direct heat,
moisture or mechanical shock.
Environmental - This product complies with the RoHS directive and contains no
lead or other banned hazardous materials. In accordance with the WEEE directive,
this product must be disposed of responsibly at its end of life, by means of local
authority approved recycling systems.
Pb
Pb
Pb
Trident Audio Developments
1845 W 169th Street, Gardena, CA 90247 | tridentaudiodevelopments.com
For Tech Support and Repair Authorization,
please contact: US Service & Sales 1845 W. 169th Street Gardena, CA 90247
at +1 (310) 323-9050 or sales@tridentaudiodevelopments.com
80B EQ 500 Series is a Registered Trademark of Trident Audio Developments
Features and specifications are subject to change without notice
Table of contents
Other Trident Stereo Equalizer manuals
Popular Stereo Equalizer manuals by other brands

Gyraf Audio
Gyraf Audio G14 user manual

Sound Performance Lab
Sound Performance Lab TUBE VITALIZER 9530 user manual

Phonic
Phonic IA231F user manual

Sound Performance Lab
Sound Performance Lab Vox Ranger Graphic Equalizer For The Vocal Range... manual

Sony
Sony SEQ-V7700 Service manual

Behringer
Behringer MiniFBQ FBQ800 user manual

Gecko
Gecko destiny EQ 7043 owner's manual

Boss Audio Systems
Boss Audio Systems AVA-1210 Specification sheet

Altec Lansing
Altec Lansing 1412A SIGNAL PROCESSING manual

Guardian Audio
Guardian Audio EQ215s owner's manual

Deer Creek Audio
Deer Creek Audio EQ901 USB user guide

Audiovox
Audiovox Prestige PEQ-200 owner's manual