Excalibur - AD-350 Analog Delay

Bernardduur · Post by **Bernardduur** » 11 Oct 2012, 16:39

So, I got this unit in for a pedalboard cleanup and rewire and just wanted to see what's under the hood.......

Bright pink pedal, enclosure just too big for the underside (little gaps on the side).......

From the website:
With 350 milliseconds of variable Delay Time BBD IC the AD-350 can produce a wide variety of time-delay effects, from Rock-A-Billy slap back echo to erratic, runaway delays.

I was guessing some analog delay; but it's not, it is again another PT2399 delay; sigh..........

Will post pics later!

Dirk_Hendrik · Post by **Dirk_Hendrik** » 11 Oct 2012, 17:02

Thanks! please do post the pics!
But the good thing (in between the lies) is that it can be modified for a far longer delaytime!

Dirk_Hendrik · Post by **Dirk_Hendrik** » 11 Oct 2012, 17:43

I mean, de-lie time

agoldoor · Post by **agoldoor** » 11 Oct 2012, 21:15

I love this from the description of their distortion pedal:
"While most other distortion pedals adopt an ordinary transistors and capacitor for their tone circuit, the Holy GRAIL uses a 4558 IC as a simulated inductor in place of the standard coil. "

...A simulated inductor in place of the standard coil... how does that sentence go together? What is that supposed to mean?

Dirk_Hendrik · Post by **Dirk_Hendrik** » 12 Oct 2012, 05:54

agoldoor wrote:...A simulated inductor in place of the standard coil... how does that sentence go together? What is that supposed to mean?

the Holy GRAIL uses a 4558 IC as a simulated inductor in place of the standard coil. This ingenious component substitution helps make the HOLY GRAIL's tone circuit smaller and quieter than other pedals.

That circuit is called a gyrator. They're used in countless pedals.

Bernardduur · Post by **Bernardduur** » 12 Oct 2012, 09:58

Bernardduur · Post by **Bernardduur** » 12 Oct 2012, 17:00

Hmmmm, I've played it today and I must say I am not impressed........

Boring sounds........

Next, there is a quite annoying gatey noise underneath the bass notes..... higher notes have no issues but lower notes (say from the A on the 6th string) give it with all instruments / cables

Crap!

twangster · Post by **twangster** » 16 Oct 2012, 13:38

It's the Belcat DLY 303, same as Modtone Analog Delay and many others

twangster · Post by **twangster** » 16 Oct 2012, 13:40

A old thread about Belcat DLY 303: http://www.stompboxzone.com/forum/viewt ... 5&start=20

Bernardduur · Post by **Bernardduur** » 17 Oct 2012, 08:19

Ah yes, they are quite the same

And that Belcat is much cheaper.......

Bernardduur · Post by **Bernardduur** » 31 Jul 2015, 06:40

One again found it's way on my bench

Excalibur - AD-350 Analog Delay [schematic]