Halvyn R-9000 — Digital Reverb (flagship)

The controls.

Program Large Hall as issued

Chooses the reverb's space: Large Hall, Concert, Cathedral, Plate, Chamber, Room, or Ambience — each its own delay-network layout and scale.

Pre-Delay 0–500 ms · 24 ms as issued

Sets the silent gap before the reverb tail begins, in milliseconds.

Decay (RT60) 0.2–30.0 s · 2.4 s as issued

Sets the reverb's decay time (RT60), in seconds — how long the tail takes to fade.

Size 0–100 % · 60 % as issued

Sets the size of the simulated space, scaling the delay network.

Diffusion 0–100 % · 75 % as issued

Sets the density of the allpass diffusion that smooths the reverb's reflections into a tail.

Early/Late 0–100 % · 50 % as issued

Balances the early reflections against the late tail, from early reflections alone at 0 % to the tail alone at 100 %.

HF Damp 1.0–20.0 kHz · 6.0 kHz as issued

Sets the high-frequency damping inside the reverb's feedback, darkening the tail as it decays.

LF Damp 0–100 % · 20 % as issued

Sets how much faster the low frequencies die away than the rest of the tail, from none at 0 % to a sharp cut at 100 %.

Mod Depth 0–100 % · 25 % as issued

Sets the depth of the chorusing modulation applied to the reverb tail.

Mod Rate 0.10–5.00 Hz · 0.80 Hz as issued

Sets the rate of the chorusing modulation applied to the reverb tail, in Hz.

Low Cut 20–500 Hz · 20 Hz as issued

Sets the high-pass filter on the signal feeding the reverb, trimming low frequency out of the send.

Grain 16-bit as issued

Chooses the bit depth the tank's delay memory is quantized to: Off, full resolution; 16-bit; or 12-bit, the coarser period grain.

Input -24.00–24.00 dB · 0.00 dB as issued

Sets the level going in, in decibels, before the signal reaches the restored circuit.

Output -24.00–24.00 dB · 0.00 dB as issued

Sets the level coming out, in decibels, after the restored circuit and the Mix blend.

Mix 0–100 % · 30 % as issued

Blends the restored circuit against the untouched signal at equal power, from the untouched signal alone at 0 % to the circuit alone at 100 %.

Bypass Off as issued

Takes the restored circuit out of the path and passes the untouched signal, delayed to match the circuit so nothing shifts in time.

A stored setup is a program. PROGRAM hands the DATA wheel to the list, and each program applies as the wheel reaches it; line one shows its number and name, line two ARCHIVE, a pack's name or USER. STORE asks STORE? PRESS AGAIN; a second press opens the name, which starts as USER NN, and line one reads NAME, THEN STORE. The wheel changes the letter, PROGRAM moves on, and STORE stores it; the computer keyboard may type the name instead, Return storing and Escape cancelling. Holding STORE on a user program asks CLEAR? PRESS AGAIN.

Listening

Demonstration recordings, prepared at the bench.

1. 01

   The cathedral, plainly

   Sparse percussion, dry, then the Cathedral program at 35 % mix. Each hit blooms into the flagship tank and is left to finish.

   0:00 / 0:30

2. 02

   Early, then late

   Early/Late crosses from all reflections to all tail. Diffusion thickens from 35 to 90 %, then Decay (RT60) opens from 1.5 to 30 seconds and Size widens to full.

   0:00 / 0:30

3. 03

   The tank, clouded

   300 milliseconds of Pre-Delay before a 12-second tail. HF Damp at 3 kHz and LF Damp at 80 % close the room in; Mod Depth at 70 % and Mod Rate at 3 Hz set the tail chorusing; Low Cut holds the send at 150 Hz and the delay memory runs 12-bit Grain.

   0:00 / 0:30

4. 04

   Seven programs, in order

   The seven programs, four seconds apiece — Large Hall, Concert, Cathedral, Plate, Chamber, Room, Ambience. Same material, same Decay; only the topology changes.

   0:00 / 0:30

The rest of the archive, audible — the listening room