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Showing posts sorted by relevance for query ultralightbeam. Sort by date Show all posts

Friday, May 16, 2025

Eventide Harmonizer Model H949 SN A949-2872

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video upload by ultralightbeam

"delay, flange, random processing on the H949 of a drum sample, a famous drum break"

Eventide H949 vocal demonstration

video upload by ultralightbeam

"Demonstration of an Eventide H949, fully serviced, of sale and the pitch control you have over audio."



via this Reverb listing

Pics of the inside below.

"This is fully serviced. All power supply large filter caps replaced, the ground connection from the molex a known failure mode has been tied permanently.

For H910 mode hit the 'algo' button and it will remove the 'deglitch'.

Memory chips, brand new, changed to ones that only run on 5v rail and not three different rails, they run much cooler, also when something goes wrong they don't get cooked. The early DRAMS used by eventide, those that were available were failure prone - the Personal Computer revolution quickly led to better DRAMS - which are deployed in this unit.

Electrolytic caps, tested, replaced for low ESR - top quality the best available

Better quality ceramic capacitors around DRAMS to drop noise floor to the lowest possible. They are mil-spec about £3.50 each for a tiny component and there are 10 of them.

Ripple checked for lowest noise performance possible

Tantalum where there should be tantalum - again the best.

Heatsink compound applied

A lot of the character of this unit comes from two factors; one the early digital use of memory chips to store the audio delay line with ultra fast bit slicing AMD bipolar processing chips and two the DBX companding (x3) - these really resolve the noise associated with early digital and improve signal to noise."

Dynacord ADD-One Demonstration


video upload by ultralightbeam

"stereo panning effects, pitching variable sample rate."

This is the one previously posted here.
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