{"title":"AJH Synth CV Processors \u0026 Utilities","description":"\u003cp\u003eAJH Synth CV processors, multi-function utilities and multiples \u0026amp; buffers in Eurorack format: the practical tools that tie a patch together.\u003c\/p\u003e","products":[{"product_id":"ajh-synth-ajh-precision-voltages","title":"AJH Synth Precision Voltages","description":"\n\u003cp\u003eSometimes near enough just isn't good enough - we have to have precision. Eurorack modular synthesisers use the Volts per Octave standard for pitch control, where a change of exactly one Volt in pitch CV results in an exact one octave change in pitch from the oscillators. Even small inacurracies in voltage can lead to quite large changes in pitch, so for transposition and control voltage addition it is important to have a very accurate voltage source and adder to keep everything in tune.\u003c\/p\u003e\n\u003cp\u003eThe Precision Voltages can be used as a super accurate voltage source, voltage adder or both at the same time. It has two channels to which voltages representing Octaves and Notes can be added or subtracted. If there is no input to a channel then it behaves as is a voltage source, or if an input is added to that channel then it becomes a very accurate voltage summer that can add a precise voltage to the incoming voltage.\u003c\/p\u003e\n\u003cp\u003eChannel A also allows an external Gate signal to be used to turn on and off voltage addition while still passing the input signal to the output unchanged. We also have a useful Combination Mode, where channel B can be added or subtracted from Channel A.\u003c\/p\u003e\n\u003cp\u003eA calibration output is also included which has an accuracy of +\/-0.5mV so that it can be used instead of expensive test equipment to calibrate VCO's and similar modules.\u003cbr\u003e\u003cbr\u003eMore \u003cstrong\u003einformation\u003c\/strong\u003e you can find \u003cstrong\u003ehere\u003c\/strong\u003e: \u003ca href=\"https:\/\/ajhsynth.com\/Precision.html\" target=\"_blank\" rel=\"noopener\"\u003ePrecision Voltages \u003c\/a\u003e\u003c\/p\u003e","brand":"AJH Synth","offers":[{"title":"Dark","offer_id":53125269258579,"sku":"210000001542","price":315.0,"currency_code":"EUR","in_stock":true},{"title":"Silver","offer_id":53125269291347,"sku":"210000001544","price":315.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4052\/1299\/files\/precision-votages-550-removebg-preview.png?v=1772270660"},{"product_id":"ajh-synth-ajh-minimod-glide-noise-mkii","title":"AJH Synth MiniMod Glide Noise MkII","description":"\n\u003cp\u003eThere is a lot of power and funtion contained within this deceptively small 6hp module. It features both the Glide and the Noise generator circuitry from the vintage Model D synthesiser, and we have now improved the performance and added extra features in the new Mk 2 version\u003c\/p\u003e\n\u003cp\u003eThe MiniMod glide uses a discrete circuit which includes a track and hold function that can gate the glide effect. Glide is only active when the Hold CV input is high, so if the hold input is connected to the gate output of a Midi\/CV convertor then the glide will be active only while the key is actually depressed, emulating the exact behaviour of the original Model D synthesiser.\u003c\/p\u003e\n\u003cp\u003eWe have also increased the versatility of the module by adding Glide Up only and Glide Down only modes in addition to the standard Glide Up \u0026amp; Down mode of the original circuit,\u003c\/p\u003e\n\u003cp\u003eThe Noise Generator is completely separate from the Glide circuitry. There are three outputs offering White Noise, Pink Noise and Red Noise. The noise source itself is all analogue and uses a specially selected transistor in avalanche mode which is amplified and filtered by discrete transistor based circuitry.\u003c\/p\u003e\n\u003ch2\u003eChanges implemented on the new Glide Noise Mk2\u003c\/h2\u003e\n\u003cp\u003eThe original MiniMod Glide +Noise module was based exactly on the original Minimoog Model D circuitry, which was designed to be used with the built in Model D keyboard, and because of its vintage design its range was severely limited to 5 or 6 octaves, and it also responded to positive voltages only. A further limitation was that it would not return fully to zero when selecting long glide times, which restricted the range even more.\u003c\/p\u003e\n\u003cp\u003eSo we made the decision to re-designed the MiniMod Glide + Noise using modern precision parts, and we have come up with an all new circuit which has exactly the same function, but with a hugely extended range. It now has an impressive 14 octave range, and can respond to negative voltages down to -5V. This is a very useful feature, as our MiniMod VCO’s will respond to negative control voltages and produce correspondingly low frequencies; so it is now possible to glide down quickly or slowly to crazy sub bass levels! The hold feature has been improved too, it covers the full audio range as well as DC control voltages, and works as a track and hold module with Eurorack signal levels.\u003c\/p\u003e\n\u003cp\u003eA further enhancement is that the Mk2 module can now (using selectable jumpers) transmit or receive pitch CV to the Eurorack power bus; for example the Glide CV Output can now be directed to the Bus in order to send CV’s to (for example) three VCO's via the bus without the need for a passive multi and four patch cords!\u003c\/p\u003e\n\u003cp\u003eThe Noise section of the module is unchanged, except that we have slightly boosted the level of the Red Noise output to bring it more in line with Eurorack control voltage levels.\u003c\/p\u003e\n\u003cp\u003eLastly, it is much shallower - Mk1 Glide Noise had a depth of 54mm, and it was the only MiniMod module that was too deep to fit a skiff style case – and this prevented a full MiniMod system being installed into a shallow Eurorack case. The new MK2 version is only 28mm deep, so this allows both it and a full MiniMod system to be mounted into shallow skiff style Eurorack cases\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMore \u003cstrong\u003einformation\u003c\/strong\u003e you can find \u003cstrong\u003ehere\u003c\/strong\u003e: \u003ca href=\"https:\/\/ajhsynth.com\/Glide.html\" target=\"_blank\" rel=\"noopener\"\u003eMiniMod Glide Noise MK2\u003c\/a\u003e\u003c\/p\u003e","brand":"AJH Synth","offers":[{"title":"Dark Edition","offer_id":53125270602067,"sku":"210000001511","price":249.0,"currency_code":"EUR","in_stock":true},{"title":"Silver","offer_id":53125270634835,"sku":"210000001513","price":249.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4052\/1299\/files\/ajh-synth-minimod-glide-noise-eurorack-module-silv.jpg?v=1772270706"},{"product_id":"ajh-synth-ajh-minimod-cv-mix-offset-vca","title":"AJH Synth AJH MiniMod CV Mix-Offset-VCA","description":"\u003cp\u003e\u003cstrong\u003eThe MiniMod\u003c\/strong\u003e \u003cstrong\u003eCVMix-Offset-VCA\u003c\/strong\u003e - is a compact 10hp wide Eurorack format module. It has been developed to offer a range of useful utilities for the MiniMod system and of course other Eurorack synthesisers..\u003c\/p\u003e\n\u003cp\u003eIt comprises a four channel polarising mixer, amplifier, inverter, a voltage source and a DC coupled VCA with switchable CV offset.\u003c\/p\u003e\n\u003cp\u003eUses include mixing together CV modulation sources, mixing an offset voltage with a CV source, converting a bipolar +\/- 5V modulation into a unipolar 0 to +5V\u003c\/p\u003e\n\u003cp\u003eThis is possibly the most useful utility module that can be added to a modular system, you'll wonder how you ever managed without it!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eIn Depth\u003c\/h4\u003e\n\u003cp\u003eThis useful module is a Bipolar Mixer, DC voltage source and Linear DC coupled VCA - With no input to channel 1 the Input 1 pot becomes a voltage source with a range of +\/- 6V. The control pot and input for channel 4 can be switched to become an offset control and\/or a second CV input for the VCA. Input 3 has 2x gain, so it can amplify lower level CV’s too. All of the inputs are bipolar, which means that either non-inverted or inverted version of the input signal can be added to the mix depending upon the Input control being turned clockwise (non-inverting) or anti-clockwise (inverted). The 12’o’clock position is zero.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMore \u003cstrong\u003einformation\u003c\/strong\u003e you can find \u003cstrong\u003ehere\u003c\/strong\u003e: \u003ca href=\"https:\/\/ajhsynth.com\/CVMix.html\" target=\"_blank\" rel=\"noopener\"\u003eAJH MiniMod CV Mix-Offset-VCA\u003c\/a\u003e\u003c\/p\u003e","brand":"AJH Synth","offers":[{"title":"Black","offer_id":53125271486803,"sku":"210000001494","price":239.0,"currency_code":"EUR","in_stock":true},{"title":"Silver","offer_id":53125271519571,"sku":"210000001495","price":239.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4052\/1299\/files\/cv-mix-black-front-sidesm-removebg-preview.png?v=1772270728"},{"product_id":"ajh-synth-ajh-v-scale-active-multi-151058213","title":"AJH Synth V-Scale Active Multi","description":"\n\u003cp\u003eThis is a precision active buffer and multi which has outstanding performance, it features very high input impedance, very low output impedance and an offset voltage of \u0026lt;1mV.\u003c\/p\u003e\n\u003cp\u003eNot all active multi’s are born equal, some designs do not fully solve impedance mismatch and tracking problems. This may be because their input impedance is not sufficently high, or the output impedance is not sufficiently low, or perhaps a combination of both. Also, they may apply offset voltages to the output which give a difference in pitch when the buffered multi is taken in or out of circuit, so in some cases may even cause more problems than they solve!\u003c\/p\u003e\n\u003cp\u003eIn addition to being a very accurate precision buffered multi, we have added a very useful (and unique) feature to cure tracking problems - four of the five outputs can be adjusted up or down by +\/-5% from the front panel, so that VCO’s and VCF’s that don’t track 1V\/Oct exactly can be easily compensated to track correctly without having to re-calibrate the VCO or VCF themselves.\u003c\/p\u003e\n\u003cp\u003eAvailable with either silver or black fascia panels.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMore \u003cstrong\u003einformation\u003c\/strong\u003e you can find \u003cstrong\u003ehere\u003c\/strong\u003e: \u003ca href=\"https:\/\/ajhsynth.com\/V-Scale.html\" target=\"_blank\" rel=\"noopener\"\u003eV-Scale Active \u003c\/a\u003e\u003c\/p\u003e","brand":"AJH Synth","offers":[{"title":"Black","offer_id":53125272076627,"sku":"210000002667","price":179.0,"currency_code":"EUR","in_stock":true},{"title":"Silver","offer_id":53125272109395,"sku":"210000002668","price":179.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4052\/1299\/files\/v-scale-black-front-side-small-removebg-preview.png?v=1772270751"}],"url":"https:\/\/www.voltmusicstore.com\/collections\/ajh-synth-cv-processors-utilities.oembed","provider":"Volt Music Store","version":"1.0","type":"link"}