Scope, Cubase and distortion

[IvanP]

Hello, could you please help me with this issue?

I have a Pulsar 2, with v. 4.5, and using Cubase 4.

I am trying to use a live guitar in Cubase 4, plugged in through an ADAT source, and use an Amp simulator as a VST Fx.

Main problem comes when I activate the monitoring button on the Cubase audio track, and a horrible feedback comes in.

It will only go out if I remove either the Asio source or the Asio dest, but then, I won't be able to use Cubase anymore... is this any similar of what you went trhough?

Also, let me explain my routings:

I have a Yamaha 01V mixer, the Adat, and the Pulsar Card.

The Yamaha is connected digitally to the Pulsar Spdif In. The Monitor OUTs of the mixer go to a pair of monitors.

The Adat (Behringer ADDA converter) goes into the adat IN of the Pulsar card.

In my project, I have the Adat In, the Asio source, wave source, analogue in SPdif In connected into the Pulsar internal mixer.

The main OUT of the pulsar mixer is linked to wave dest, spdif, asio dest...

So, Am I doing anything wrong? Why am I getting this distortion?

I have been doing some search, found something, but nothing exactly like my issue, so I'd appreciate any help with this

Thks a lot in advance!

[hubird]

monitor off Scope mixer directly to your sound system.
use a Scope mixer's bus to record from in Cubase (bus to ASIO)
(mute the track to record on).

[IvanP]

It did it!! Wow, I'm eternally grateful to you

So simple...!

Best,

Iván

[hubird]

Monitoring via Cubase(via ASIO) you would get two times the ASIO latency (to and back from Cubase).
Scope, as hardware, hasn't latency (somewhere zero and one ms), so monitoring of external and Scope instruments off the Scope mixer is the best way anyway