Star Chambre Analogue Delay kit

Item number: 4238

Analogue 800ms Delay.

Category: Delay

Enclosure: BB drilled+ 9,90 €BB+ 6,00 €none

starting from 106,00 €

Final price incl. VAT, plus shipping (mitttel)

Short supply

Shipping time: 3-7 Working days

Description

The Star Chambre is a copy of the 70s vintage green MXR-118 V1 analogue delay, converted from the 3 x SAD1024 of the original (achieving a respectable 300ms of delay time) to use 2 x MN3005 (or 3205) for a total of 800mS of delay. What sets this delay apart from others are the "tracking" filters, which adjust the cutoff frequency of the filters as soon as the delay time is changed. This allowed to get the maximum delay time out of the chips.

This kit contains the PCB and all necessary parts. The enclosure can be selected, please select 3 knobs, up to 20mm diameter, for 6,3mm shaft separately.
Here is the bill of material: bill of material

This project is by Lectric-fx, in cooperation with Musikding. If you have any problems with the contents of the kit, please contact Das Musikding (Klaus). Since this project is rather complex, it is more for the experienced builder. For technical problems here is the link to the support-forum: Lectric-fx Support.

Here is the direct link to the manual with layout and schematic:
Instructions

Instrument:	Guitar
Effect-Type:	Mod/Echo

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Amazing legendary delay with warm repeats and interesting decay

Great delay project based on a great circuit with additional delay time.

Thanks to the high-cut filters the repeats are getting darker when we turn up the Delay control. Combined with the repeats fading away, it gives a poetic darkness to the delay sound. Much warmer and mysterious than some more precise delay.

The build process went smoothly, the kit came with resistors smaller than the regular ones, i recommend using a bit less solder than usual.

I made some minor confusion reading the instructions.

Instructions says to use TM3 to dial 4kHz at test point 1, but on my build only TM8 can do that. TM3 sets the volume of the wet signal, and i set it to max value to get a good wet/dry ratio when the delay control is set on high values.

Not sure, but i guess there is a confusion betwen TM3 and TM8 in the build doc, for the frequency calibration.

There is also some instructions page 3 about using MN3205 chip, with parts adjustments.
I think the part about R1 and R12 adjustments to get 4.5V at IC9 pin 10 is also relevant with MN3005 chips.
At first i use R1 and R12 values from the designation list, but i had a volume loss on my build when Mix was set at noon.
Using 24k instead of 36k at R1 and R12 fixed it.

There is also a trimmer to control the cut-off filters. I guess it could be modded into an external control to get a brighter or darker tone on the repeats.

Very impressed by this delay, i got quickly addicted and i use it more like a reverb, the filters are very effective to achieve a perfectly clean delay sound. Even with Delay set on high values, the repeats are getting quieter and darker but there arent any background noises.
The dark side of this circuit gives some extra life and warmth to the sound, it is very interesting.

After a few minutes playing with it the first time, this circuit gave me a pleasant feeling of an effective and beautiful tool, able to support and inspire any music player. A few days later, i had time to compare it with other delays and i am even more impressed.

All my thanks to Lectric Fx, Glory to musikding !
justin a., 07.12.2024