Lindell Audio PEX-500 Passive EQ

500 Series Rack Format Passive Parametric Equalizer with Stepped Frequency Controls and True Bypass
Lindell Audio PEX-500 Passive EQ image 1
Lindell Audio PEX-500 Passive EQ image 1

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Lindell Audio PEX-500 Passive EQ
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Add a Passive EQ to Your 500 Series Rig!

Drop a Lindell PEX-500 equalizer into your API 500 Series compatible rack and you're in for a real sonic treat. Built around a classic Pultec parametric EQ design, the PEX-500 gives you the open mids, creamy highs, and punchy lows that only a true passive equalizer can deliver. Like the classic EQs it was modeled after, the PEX-500 features all discrete circuitry, including transformer-coupled balanced inputs and outputs. A series of 3-step switches provide hassle-free control over your low- and high-frequency EQ bands plus the cutoff frequency for the high-frequency attenuator and Lindell's true-bypass circuitry keeps your signal pure on the rare occasions you actually feel like bypassing your PEX-500 equalizer.

Lindell PEX-500 500 Series Equalizer Features:
  • An affordable, 500 Series equalizer modeled after Pultec's legendary passive EQ design
  • Compatible with all standard API 500 Series compliant racks
  • All discrete design based upon the legendary 990 amplifier for classic EQ sound
  • Transformer coupled balanced inputs and balanced outputs provide pristine clarity
  • 3-step switched low frequency boost 30Hz, 60Hz, 100Hz +/-10%
  • 3-step switched high frequency boost 6kHz, 10kHz, 16kHz +/-10%
  • 3-step switched high frequency attenuation 10kHz, 15kHz, 20kHz +/-10%
  • Pin compatible with 990 and 2520 type op-amps
  • True bypass hardware preserves your sound quality when bypassed
Add an amazing passing EQ to your 500 series rack with a Lindell PEX-500 equalizer!

Additional Media

500 Series Buying Guide
PEX-500 Passive EQ Cue Sheet
PEX-500 Passive EQ User Manual
Hands On: Lindell Audio 500 Series Modules
Welcome Lindell Audio!

Tech Specs

Number of Channels 1
Number of Bands 3-band
Bypass Yes
Q Type Selectable
Frequency Response 20Hz-20kHz
Freq Range High 10kHz, 15kHz, 20kHz
Freq Range Hi-Mid 6kHz, 10kHz, 16kHz
Freq Range Low 30Hz, 60Hz, 100Hz
Height 5.25"
Depth 7"
Width 1.5"
Manufacturer Part Number PEX-500

Customer Reviews

Based on 9 reviews
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Color me Impressed!

Man oh man. I feel spoiled owning this eq. If you've got a great mic and preamp, crank up some 16kHz goodness and watch that mystical air start to happen in your track. Very clean eq great for putting that ever so popular smiley face curve on a pop vocal or fattening up a bass for example. And using the boost and cut simultaneously on the low frequency band can get you some cool results.

The Real Deal At Any Price

You can't go wrong with this EQ. I actually find my self using it more than my API 550b's. It's just so simple and as a prosumer I just want to get on with it. Probably going to buy 4-6 more and fill out my inserts on my SSL X-Desk to have a 8 channel SSL/Lindell console for under 5k. It's just totally unreal. Never mind the price. It's pro level if you aren't doing mastering or a million $ record. Sounds awesome behind a Chandler Little Devil as well with guitars.
Music background: Prosumer

Lindell PEX-500

I've bought two of those for the bass and kick, specifically 60 Hz - kick and 100 Hz - bass, and both do the job well, I've never had a luxury to work with real Pultec Eqs, however these small ones do exactly what are expected. After 6 months I installed Vintage OPA1731 into both PEXs and found the sound more colorful and pleasant. I have to say, I am very glad to deal with Sweetwater company, and my favorite representative Michael Eads.
Music background: Recording Engineer, Pro Musician

Wow. Just wow.

It seems that the pultec style EQ has come back into vogue. With companies like tube tech, IGS (Rubber Bands), A designs and others all taking their own stab at re-creating a classic. Before these companies started recreating these clones and tributes, You'd need luck AND a wad of cash to get an original pultec eq. Well, throw the PEX-500 on the heap of those using the inspiration of the original tube eq that crafted so many hits. The verdict? Wow. First off, obviously its not a tube EQ like the real pultec, and there are less frequency bands selectable than the original, BUT what is offered is well thought out, and expertly pulled off. When used responsibly, the high boosts are never harsh, but add a beautiful bright sheen that does indeed harken back to the glory of its inspiration. It takes a good understanding of HOW a parametric EQ works and what bandwidth (Q) settings are appropriate in different scenarios, respectively. The low boost is thick and powerful, not flubby, honky and undefined. Use it conservatively until you get a good feel for NOT over doing it. I LOVE these on drum overheads, on DI bass (They really make the high and low end come to life as well as adding needed warmth to sometimes harsh DI digital bass recordings.) I use a pair on bass DI/Bass Amp religiously (over several high end EQ's) I bought 6 after using a pair borrowed from a local studio on drum overheads in a mobile session. I also sprung for Lindell's 6 space 500 series chassis. Its built like a tank. I had an issue with one of the 6 PEX500's I bought. The unit flickered on and off like it wasn't powering up properly, it'd be fine for about 5 minutes, then go haywire again. Lindell fixed the issue, and instead of sending me a new one, they just credited me for another at the store I purchased it from. Done and Done. The sales rep at the store said it was the first of many Lindell products they've sold they had any problems on. I'm inclined to believe him. 5 stars all the way. Id love more frequency bands, and maybe a midrange capable version (or a basic copy of the pultec mids MEQ) but given the price, and given that every band, every filter sounds amazing, I'm inclined to keep my mouth shut and love it for what it is. If you own a studio, don't think, just grab AT LEAST a pair. When we've spent upwards of $3000 per one channel of EQ this should be a complete no brainer.
Music background: Recording Engineer, Studio Owner, Musician, Film Score/Arranger

Dont let the price trick you

i was skeptical when seeing these lil guys. for 300 i had low standards, but wanted try them out. passive eq's are hard to come by without spending a couple thousand so i searched and found this eq... wow. effin wow! i own a pair and these things are smooth and creamy. i have absolutely nothing to say other than these are among my fav gear purchases ever!
Music background: Engineer/Producer/Musician

Sweetwater Advice

Mitch Gallagher

Swedish record producer Tobias Lindell is well known for his dedication to great sound. When he launched Lindell Audio in 2010, his goal was to create equipment that suited his own working methods and satisfied his need for quality. Now he has brought that same dedication to the 500 Series format with three modules: the 6X-500 mic pre/EQ, the 7X-500 FET compressor, and the PEX-500 Pultec-style EQ. I had the opportunity to load all three up in an API lunchbox and take them for a spin. The 7X-500 is Lindell's take on classic 1176-style compression, with all the expected features and controls. However, two additional features take it up a notch: a mix control for parallel compression and a sidechain with a highpass filter. The 7X-500 excels anywhere you'd use an 1176. I found the 7X-500 is especially awesome on drums, guitars, and vocals, but it is a great all-around compressor. The PEX-500 is a Pultec-style EQ with both low and high bands, each with boost and cut controls. Being able to boost and cut in the same band allows you to create complex EQ curves, but the real power of the PEX-500 lies in the fat, punchy bottom and creamy top end it can produce. I used it on kick drum, snare drum, electric bass, and vocals -- everything simply sounded better running through the PEX-500. The 6X-500 preamp/EQ offers a thick transformer-coupled sound with fat low end and smooth top end. The bonus is the inclusion of two boost-only bands of Pultec-style EQ, each with three frequency selections. There's 65dB of gain on tap, plus 48-volt phantom power, polarity reverse, and EQ bypass switches. This is a great-sounding preamp. The Lindell Audio 500 Series modules offer incredible value -- at just $299.99 each, they're no-brainers for building a hybrid studio based around a DAW and a mixer or summing box. Check these out -- great audio awaits!
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See also: Lindell Audio, Lindell Audio 500 Series EQ