Roland SDE-2500 digital delay from the 80's
Roland SDE-2500 digital delay
Serviced, all the faulty blue tantalum electrolytic capacitors have been replaced for quality elco's. The potmeter have been washcleaned and dried with an aircompressor, they are scratchfree now.
The jack sockets have been cleaned with Krackle Killers
Lot's of 15bit character and great modulation LFO for the echo.
Thank you for watching and if you have questions, please let me know !
SPECS:
In keeping with Roland's MIDI/Modular path into the future, they have come out with their first MIDI Digital Delay — the SDE-2500, which has no less than 64 MIDI-controllable memories.
On either side of the facia are two large push buttons; one for power on/off and another for signal Bypass. To the right of the bypass switch is a six stage ladder meter and its respective input level attenuator, and the Input/Output level matching can be switched between the standard professional level of +4dB and the instrument level of -20dB from a button on the rear panel.
All the controls for sound processing are programmable, including the delayed signal's output level control. There are four of these programmable knobs on the front panel — Feedback, Delay, Out, and Modulation Rate and Depth.
Alongside the display is a switch whose primary function is to increase/decrease the program number. By depressing its top half, the program number increases, and by hitting its bottom half, the program number decreases. This switch's secondary function is for MIDI On/Off/Omni switching.
The display is divided into two sections. The left hand, two digit display shows the memory number, and the right hand three digit display indicates the current delay time in milliseconds.
To the right of the display are two LED indicators. One of these flashes at the rate of the Low Frequency Oscillator, and the other is a delay On/Off indicator. Further to the right are two rows of four push-buttons. On the top row are buttons for writing patch settings into memory locations, copying from one memory to another, and two buttons for MIDI communications labelled MIDI Program and MIDI Channel. The latter simply changes the MIDI channel, and the other button, MIDI Program, is very useful as it enables you to select any particular memory location in the SDE-2500 from any one of the synths patches. Therefore you can, for example, switch to voice number 12 on your synth, and automatically select memory number 57 on the Digital Delay. On the bottom row of this cluster of buttons are a x2 mode (which multiplies the delay time by two, whilst halving the delayed signal's bandwidth), a button for inverting the phasing of the delayed signal, a filter button (cutting off the very top end of the echoed signal), and a hold button.
