Aquaboy FIRST repeat distorted

[deadTalash]

Hi guys, I'm having a strange problem. I've built an aquaboy2012 with two MN3005s running at 15v. Spent a lot of time biasing the bbds, but the problem remains. When i stroke the strings pretty hard, first repeat sounds like it's clipped, next ones are good. Problem appears when the bridge pickup is on (Seymour Duncan JB4)  But when i switch to the neck (1 coil of Carvin c22) the problem is gone. Seems like it's "headroom" problem, maybe something wrong with compander NE570, any ideas?
Thank you guys!

[Scruffie]

Well... BBDs don't have masses of headroom if you're using high output pickups it may just be normal behavior.

What's the voltage on pin 7 of the compander though.

[deadTalash]

I measure 7.69v DC at pin7 of NE570.
P.S. Remember Scruffie, we were discussing the triple delay time mod? Unfortunately, the third MN3005 I got was fake one, so I had no chance to try this(

[Scruffie]

It happens... frequently.

7.69v is fine... I think it might just be your biasing not being 'perfect' and the use of high output pickups and playing hard, from memory an MN3005 will take about a max of 1Vrms.

[deadTalash]

But why only the first repeat is distorted? I pulled the humbucker down, so it's output is now lower. But it still distorts!) Neck pickup with higher output does not distort!))) Very strange

[midwayfair]

But why only the first repeat is distorted?

1. Repeats are progressively band-pass filtered.
2. The volume of repeats decays.
3. The first repeat was clipped AT the chip's headroom - by definition the subsequent repeats will therefore be BELOW the headroom.