Sproom, half space half room.

It´s based on the FV-1 DSP IC by Spin Semiconductor which got popular with some famous guitar pedal effects and is covering all types of quality reverbs, delays, chorus, flangers, tremolos, or combinations of them.

It´s stereo and operates with 6 MIPS at Fs=48KHz, or in other words excellent audio quality with a clean dry / wet path to adjust the amount of effecting.

It offers 3 banks with each having 8 different algorithms. In total 24 effects.

The input is normalized to R. Means with just plugging a mono source into the left input, the output becomes stereo.

Each algorithm can be controlled with one of the 3 potentiometers, or by control voltage.

Capable of -5 / +5V with the dedicated pot at around center position, or 0-10V with the pot fully closed. In other words, the pot acts as offset.

Fancy LED indication for clipping and CV ins.

The internal effects are tied to the IC and fixed. Bank 2 & 3 or EX1 & EX2 can be exchanged with EEPROMS on the backside.

8HP

Depth: 42mm

+12V 92mA

-12V 23mA

Effects:

Bank	Effect Type	Pot1	Pot2	Pot3
INT1	Chorus – Reverb	Verb Mix	Chorus Rate	Chorus Mix
INT2	Flange – Reverb	Verb Mix	Flange Rate	Flange Mix
INT3	Tremolo – Reverb	Verb Mix	Tremolo Rate	Tremolo Mix
INT4	Pitch Shift	+/-4 semitones
INT5	Pitch – Echo	+/-4 semitones	Echo Delay	Eco Mix
INT6	Test	xx	xx	xx
INT7	Reverb	Size	HP Filter	LP Filter
INT8	Reverb	Size	HP Filter	LP Filter
EXT 1.1	Stereo Ring Modulator	Blend	Carrier Offset	Chorus
EXT 1.2	Reverb Reverse	Pre-Delay	Decay	Damping
EXT 1.3	Tape Delay 1 Head Ping Pong	Rate	Feedback	Damping
EXT 1.4	Tape Delay 2 Head Ping Pong	Rate	Feedback	Damping
EXT 1.5	Tape Delay 2 Head Ping Pong + Reverb	Rate	Feedback	Damping
EXT 1.6	Digifuzzer / Bitcrusher	Sample Rate	Bit Rate	Level
EXT 1.7	Shimmer Reverb	Damping	Shimmer Level	Decay
EXt 1.8	Triple Cascaded Delay	Rate	Rate	Rate
EXT 2.1	Reverb Hall	Size	Delay	Damping
EXT 2.2	Reverb Large	Size	Delay	Damping
EXT 2.3	Reverb Small	Size	Delay	Damping
EXT 2.4	Reverb Plate	Size	Delay	Damping
EXT 2.5	Reverb Gated	Size	Delay	Damping
EXT 2.6	Delay	Feedback	Tempo	Damping
EXT 2.7	Flanger	Delay	Width	Rate
EXT 2.8	Chorus	Amount	Width	Rate

The process of flashing EEPROMs can be discovered here on GitHub

A list of available algorithms can be found here at Spin or here.

Spin provided a software to create own algorithms (If you´re a nerd :p). Feel welcome to share your algos or experience here in the forum.

Me personally would be very happy if 🙂