The Q2 Audio F765 is the compression and limiting sections of the famous \u00abCompex Limiter\u00bb\u2122 built into a single 500 Series slot. The audio path contains the same blue Phillips type capacitors and BC series transistors as the original Compex.<\/p>\n
Formatted after the vertical \u00abN-Unit\u00bb with slight layout changes for enhanced usability, the F765 lives up to the reputation it’s big brother, the F760X-RS, has made over decades of being a \u00absecret weapon\u00bb on countless records.<\/p>\n
Features<\/p>\n
Single channel level control offering simultaneous compression gain reduction with peak limiting
\n Precision calibrated compressor\/limiter threshold control which allows the user to \u201cdial up\u201d the amount of compression required before peak limiting occurs
\n Switched Compression values from 1:1 (amplifier), 2:1, 3:1, 5:1, 10:1 & 20:1 (limiter)
\n Auto dual platform release function \u2013 allows fast transient recovery on a \u201cbuild-up\u201d slow release<\/p>\n
Enhancements<\/p>\n
Gold contact rotary switches
\n Gold contact toggle switches
\n Conductive plastic potentiometers
\n PCB headers for possible future connection to E900 type EQ
\n Sidechain Insert and Bus output functionality per Radial Engineering specs
\n Sidechain insert is jumpered by default
\n Sidechain insert send minimum external load of 10K<\/p>\n
Specifications
\nInput: 10K ohms Unbalanced<\/p>\n
Output: Transformer Balanced (Cinemag CMOB-3L) Max output: 20dBu, 18.5dBm<\/p>\n
Metering: Sifam Fast Responding analog meter<\/p>\n
Stereo Linking: Must ordered as stereo pair for proper stereo performance<\/p>\n
Power requirements: +\/-16V DC @ 70mA per rail (brief 400mA turn-on surge)<\/p>\n
System Gain: 34dB with input\/output attenuators fully open. Unity gain in Bypass mode<\/p>\n
Thresholds:
\nPeak Limiter: +14dBu maximum with unattenuated output. Referred to unattenuated input level 20dBu
\nCompressor: Calibrated with reference to Peak Limiter thresholds and marked 0 \u2013 20dB in 2dB steps. (Reference to unattenuated input level this is -20dBu to -40dBu)<\/p>\n
Release:
\nPeak Limiter: 250mS,
\nCompressor: 25mS, 50mS, 100mS, 200mS, 400mS, 800mS, 1.6 secs, 3.2 secs + Auto release function<\/p>\n
Attack:
\nPeak Limiter: < 250uS for 100% control of overshoot \u2013 without any over limiting. (measured at 1KHz for 10dB gain reduction)\nCompressor: 250uS, 2.5mS, 25mS\n\nDistortion: Measured at 1KHz for 10dB compression & 3.2 secs release time.\nCompressor: at +10dBu threshold <0.1% (typically 0.04%)\nPeak Limiter: at +14dBu threshold <0.3%\n\nFrequency Response:\nBalanced: < -0.5dB at 20Hz & < -0.75dB at 20KHz\n\nSignal \u2013 Noise Ratio:\nReferred to Peak Limiter threshold level as set by output attenuator: better than -80dB (Measured with low pass filter -3dB at 25HKz)\n\nStereo Matching:\nControl volts matching on compressor to within \u00b11dB of each other, consequently no image shift during operation\nSelectable Peak Limiter operation\nPeak Limiter on \u2013 off or Pre-emph (50uS time constant)\n\nIndicators:\nOverall Gain Reduction Meter scaled 0 \u2013 20dB in 4dB divisions. White scale on black background with yellow pointer\nPeak Limiter operating: Red indicator\n\n\nSound on Sound: \"The classic sound of the ADR Compex... in API Lunchbox\u2122 format\".\nBarry Rudolph for Music Connection Magazine: \"...the F765 as is has the sound and color of the original 2U Compex processor.\"\n\nGeoff Stanfield, TapeOp May\/June 2017: \"The F765 is a solid utility compressor and a creative tone machine all in\none.... this processor can knit elements\ntogether while really adding something special to the mix.\"\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
New version of the classic Compex compressor features Jensen input and output transformers …<\/p>\n","protected":false},"featured_media":12689,"template":"","meta":[],"pwb-brand":[182],"product_brand":[],"product_cat":[1032],"product_tag":[509],"class_list":["post-12688","product","type-product","status-publish","has-post-thumbnail","pwb-brand-q2-audio","product_cat-serie-500","product_tag-q2-audio","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-simple"],"brands":[{"id":182,"name":"Q2 AUDIO","slug":"q2-audio"}],"_links":{"self":[{"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product\/12688","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/media\/12689"}],"wp:attachment":[{"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/media?parent=12688"}],"wp:term":[{"taxonomy":"pwb-brand","embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/pwb-brand?post=12688"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product_brand?post=12688"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product_cat?post=12688"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product_tag?post=12688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}