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An echo room chamber is a space where program material is played and the reverberations are captured on a microphone. You know the classic sounds of a good church or music hall. Studios needed to capture these effects without always going to a church or hall to record. So, they built their own echo chambers. The famous EMI/Abbey studio had 3 echo chambers. They also used electronic filters to carefully refine the sound in order to make it easier to record, which made the end results sound impeccable.
Keeley has incorporated the RS106 filter which had points at 600Hz high pass filter and a 10K low pass filter. In the studio, music (or your guitar) was filtered through at these points before being sent to the speaker in the echo chamber. This made for a tighter, more defined sound to be present in the chamber.
Next there is the Brilliance Control, either the RS127 or RS135. This was what the engineers used to refine the reverb sound that they captured on the microphone. Engineers could select one of 3 frequency points to boost or cut by +/-10 dB. The key frequencies they targeted were 2.7 kHz, 3.5 kHz, or 10 kHz, now offered on the Abbey Chamber Verb.
The Pre-Delay of the room is a naturally occurring 30ms, and the delay of the tape machine added another 150ms, so that’s the range that they give you.
With the Abbey Chamber Verb, you can have these classic tools to add reverb to your guitar, vocals, or to any element of your recordings or live sound.
…Soft and Warm Vintage Reverb. That’s what they were after here. Keeley wants people to recreate some of those classic sounds in a live setting without a DAW or other expensive packages. Guitar players need a plug-and-play chamber reverb that gives them the classic sounds they are used to and want to emulate.
You can easily set the Decay to determine the length of the reverb.
The Pre-Delay is used to match the classic sounds of vintage recordings, going from extremely fast doubling in the reverb to a slapback type of sound.
The Brilliance Control allows you to have the same types of tools to filter and fine tune the reverb, which allows for soft reverbs, deep and sublime reflections, bright and reflective ambience–whatever you chose. You are now the studio engineer to your own sound!