77X-500 - Processor Lindell Audio - Free user manual and instructions

Product Type	500 Series Stereo Compressor/Limiter
Brand	Lindell Audio
Model	77X-500
Power Requirements	+/- 16 V
Attack Time	20 µs to 800 µs
Release Time	50 ms to 1.1 s
Input Impedance	25 kΩ
Output Load Impedance	70 Ω transformer balanced
Frequency Response	+/- 1 dB 20 Hz to 20 kHz
Maximum Gain	45 dB
Total Harmonic Distortion	< 0.5% THD (60 Hz to 16 kHz)
Dimensions (Width x Height)	133.35 mm x 76 mm
Compression Ratios	4:1, 12:1, 100:1 (All-In)
Sidechain Highpass Filter	Off, 100 Hz, 200 Hz
Mix Control	Variable parallel compression (wet/dry blend)
Link Function	Channels linked or unlinked
True Bypass	Hardwired relay bypass
Gain Reduction Metering	20-LED display
Warranty	1 year (transferable)

Frequently Asked Questions - 77X-500 Lindell Audio

How do I install the 77X-500 into a 500 series chassis?

Insert the module into an empty slot in your 500 series power chassis, ensuring the 10-pin edge connector aligns properly. Secure it with the screws provided. The unit requires +/- 16V power from the chassis.

What does the Mix control do?

The Mix control allows you to blend the compressed (wet) and uncompressed (dry) signals, enabling parallel compression. This lets you crush the sound while retaining original dynamics.

What compression ratios are available?

The 77X-500 offers three ratios: 4:1 (mild), 12:1 (heavy), and 100:1 (all-in/limiting).

How do I link the two channels for stereo operation?

Set the LINK switch to the 'on' position. This activates an internal battery-powered link circuit for accurate stereo tracking. Remove the cover to replace the battery if needed.

What is the sidechain highpass filter for?

The filter (off, 100 Hz, or 200 Hz) reduces low-frequency content in the sidechain, preventing the compressor from reacting too heavily to bass. Useful for drums or full mixes.

How do I bypass the compressor?

Press the COMP IN switch to the 'out' position (hardwired bypass). The unit then passes the signal without any compression.

What are the power requirements?

The module requires +/- 16 V DC from the 500 series power chassis. It draws standard current for the format.

What are the dimensions of the 77X-500?

The module is 133.35 mm (5.25 inches) wide (double-wide 500 series) and 76 mm (3 inches) high.

What is covered under the warranty?

Lindell Audio warrants the product free from defective parts and workmanship for one year from the original purchase date. It is transferable within the warranty period. Exclusions include misuse, modification, unauthorized repair, and shipping damage.

How do I clean or maintain the unit?

Use a dry, lint-free cloth to clean the front panel. Avoid liquids or solvents. No internal user maintenance is required; refer to qualified service for any issues.

USER MANUAL 77X-500 Lindell Audio

THE 7TX-500 is a STEREO VERSION OF OUR 7X-500 COMPRESSOR/LIMITER. THE 7TX-500 is a double-wide 500 SERIES MODULE, AND WE'VE HAS ADDED ATTACK AND RELEASE KNOBS THAT GIVE YOU EXACTING SIGNAL-SHAPING CAPABILITIES.

YOU CAN RUN THE UNIT UNLINKED OR LINKED; all THE FET TRANSISTORS ARE MATCHED FOR EXCELLENT STEREO TRACKING. 7TX-500 PACKAGES THE SOUND OF ONE OF THE MOST POPULAR COMPRESSOR/LIMITERS OF ALL TIME

into the convenient 500 Series format, while giving you all the useful functionality you could ask for. THERE'S A highpass sidechain filter, which lets you focus its response, and a mix knob that lets you blend its wet and dry signals to taste.

Lindell 77X-500 500 SERIES STEREO COMPRESSOR AT A GLANCE:

* Mix control lets you crush your sound, without losing definition
* CONTINUOUS CONTROL OVER ATTACK AND RELEASE
* Highpass sidechain filter allows you to fine-tune your dynamics
* Mix control lets you crush your sound, without losing definition

HERE'S A COMMON SCENARIO: YOU'RE TRYING TO GET AN ABSOLUTELY MASSIVE KICK SOUND, SO YOU CRUSH THAT TRACK MERCILESSLY, AND JUST WHEN YOU'VE GIVING IT ALL THE UMPLI YOU NEED, YOU REALIZE THAT THE TRANSIENT FROM THE BEATER'S COMPLETE BURIED IN THE MIX.

Normally, that's when you give a profound sigh, zero out your compressor, and start over from scratch. The 77X-500 compressor saves you that frustration with its mix control, allowing you to beef up your compression and the blend in the dry signal to bring back some of the original dynamics. New York has claimed the patent on this technique; "parallel compression."

You'll call it wonderfully effective. So go ahead, set your 77X-500 to its 100:1 "all-in" mode and abuse your tracks.

THE MIX FUNCTION ALWAYS BRINGS YOU BACK TO GOLDEN.

CONTINUOUS CONTROL OVER ATTACK AND RELEASE:

Its mono predecessor offers simple 3-way switches for attack and release, but that may not be ideal when you're dialing in your compression by ear. That's why most "serious" compressors offer continuous control over attack and release - and why the 77X-500 gives you nice big attack and release knobs. Whether you're taming your bass track or punching up some vocals, the 77X-500 is the right tool for the job.

Highpass sidechain filter allows you to fine-tune your Dynamics:

Whether you're going for the full French house effect, or just want to compress your drum overheads, having a built-in highpass on your sidechain is super convenient. The 7TX-500's onboard highpass sidechain filter gives you three settings to choose from (off, 100Hz, and 200Hz), so it's easy to block out lows without needing to patch external processing.

77X-500 500 SERIES STEREO COMPRESSOR FEATURES:

* A powerful, affordable, and musical 500 SERIES STEREO COMPRESSOR
* FET-based technology sounds eerily REMINISCENT OF CLASSIC COMPRESSORS FROM THE LATE '60s
* VARIABLE MIX CONTROL, FOR POWERFUL PARALLEL COMPRESSION TECHNIQUES
* Attack and Release knobs give you exacting sound-shaping capability
* 3-MODE (off, 100Hz, and 200Hz) highpass sidechain filter lets you focus your dynamics
* Choose from mild 4:1, heavy 12:1, and "All-in" 100:1 compression ratios
* Run the channels linked or unlinked
* TRUE-BYPASS HARDWARE PRESERVES YOUR SOUND WHEN BYPASSED
* 20-LED GAIN-REDUCTION METERING LETS YOU KEEP AN EYE ON THE MIX

LINDELL. AUDIΩ

WWW.LINDELLAUDIO.SE

How to Install the module into a power chassis:

SET THE AMOUNT of COMPRESSION with this knob

Output Level, Gain MakeUp

Comp Mix,

Parallel Compression

Output Fine Trim.

— • Attack
—• Release
Ratio 100:1 12:1 4:1
—• Side Chain High Pass Filter
LINK. ACTIVATES THE INTERNAL BATTERY link circuit. REMOVE THE COVER TO EXCHANGE BATTERY IF NEEDED
• Comp IN. ACTIVATES THE UNIT. It's HARDWIRED BYPASSED

LINDELL. AUDIΩ

WWW.LINDELLAUDIO.SE

SPECS:

POWER REQUIREMENTS:

+/- 16V

Attack Time:

20 MICROSECONDS to 800 MICROSECONDS

RELEASE TIME:

50 milliseconds to 1.1 seconds

Input Impedance:

25koHM

Output Load Impedance:

70ohm transformer balanced

FREQUENCY RESPONSE:

+/- 1dB 20 Hz to 20kHz

Gain:

45 dB

Distortion:

Less than 0.5% thd from 60 Hz to 16 kHz

DIMENSIONS:

133,35 mm x 76 mm

LINDELL. AUDIΩ

WWW.LINDELLAUDIO.SE

CREDITS

* CONCEPT & DESIGN: Tobias Lindell
* Circuit & Electrical Design: Igor Sobczyk
* TRANSFORMER DESIGN: Mr. Hu
* PRODUCTION MANAGER: MR. QUI
* COUNTRY of MANUFACTURING: CHINA

WARRANTY

* Lindell Audio WARRANTS all of our products to be free from defective parts and workmanship for a period of one year.
* THE WARRANTY PERIOD BEQINS AT THE ORIGINAL PURCHASE DATE AND IS TRANSFERABLE WITHIN THE PERIOD OF WARRANTY.
* This WARRANTY EXCLUDES THE FOLLOWING CONDITIONS: MISUSE, MODIFICATIONS (EG: CHANGING OF TRANSFORMERS, OPAMPS, ETC) OR UNAUTHORIZED REPAIR, BRUTE FORCE USAGE AND DAMAGE INCURRED DURING SHIPMENT.
* DURING THE TIME OF THE WARRANTY, Lindell Audio will REPAIR OR REPLACE ANY DEFECTIVE PARTS, VIA OUR DISTRIBUTORS FREE OF CHARGE.
* CUSTOMERS ARE RESPONSIBLE FOR ALL INBOUND FREIGHT CHARGES TO THE SERVICE FACILITY, while Lindell Audio will pay for RETURN FREIGHT.

COMPANY INFORMATION

I STARTED "Lindell Audio" back in 2010 and set out to design RECORDING STUDIO EQUIPMENT TO SATISLY MY OWN WAY OF WORKING. DEVELOPING FUNCTIONS AND USER INTERFACE THAT DIDN'T EXCIST ON THE MARKET. I'M RESIDENT PRODUCER AT BOHUS SOUND STUDIOS. HTTP://bohussound.com/

WHERE I produced and mixed many hit RECORDS THRU OUT THE YEARS:

EUROPE - LAST LOOK AT EDEN, MUSTASCH - LATEST VERSION OF THE TRUTH & MUSTASCH,

HARDCORE SUPERSTAR - Split YOUR Lip, CRASH DIET, BULLET, AVATAR, HEAT, VON BENZO, ETC.

OUR GOAL AS A GEAR MANUFACTURER IS SIMPLE; PRODUCE RECORDING EQUIPMENT, DESIGNED BY ENGINEERS FOR ENGINEERS....

Tobias Lindell

SHOWROOM, Swedish Office: Lindell Audio, UTMARKSVÄGEN 6, 442 39 KUNGÄLV, SWEDEN [e-mail]

MOTHER COMPANY: NEW SOUND TRADING LTD., FAULKNER HOUSE, MILL LANE, SAUSTON, CAMBRIDGESHIRE, CB22 3HY, ENGLAND VAT: Gb136 8371 96