OC-150 with headphones
Posted 24 August 2005 - 02:09 PM
Posted 26 August 2005 - 05:11 PM
Let me look over the OC-150 manual when I am back in the office on Monday and get back with you as it has been discontinued for a very long time.
My apologies for our delay in getting to your question I have been out of the office most of this week and with my absence Tech Support has been short handed. Participation on the forum by Crown staff is offered as a supplement to Crown telephone and email technical support. Most questions for Crown staff posted on the forum are answered with a reply post within 1 to 2 business days, sooner when possible. Crown makes no guarantee as to when questions will be answered via the forum by Crown staff.
Posted 30 August 2005 - 08:27 PM
Typically, even hard to drive headphones only require milliwatts to drive. Hope this helps.
Posted 31 August 2005 - 12:48 PM
It was an Output Controller designed for speaker switching and output metering in home audio applications many.... many..... years ago.
I have located a manual for an OC-150A and will try to get it scanned and posted on our website next week. Besides a few small changes in the circuitry and the buttons being square on the OC150 and round on the OC-150A they were basically the same.
According to the manual the headphone jacks are driven directly from the Amp 2 input. This means you would need to use a separate amplifier for the headphones and yes there was an attenuator switch on the back for the headphones to help protect your ears.
The output terminals for Speaker sets 1 and 2 were both driven from the Amp 1 input with separate on off front panel buttons.
Amp Input 2 could be hard jumpered to Amp Input 1 for monitoring of the main amplifier if a second amp wasn’t being used. However, even with the attenuator engaged CAUTION was need when using headphones and speakers together with one amp.
Posted 31 August 2005 - 03:39 PM
Posted 31 August 2005 - 05:07 PM
Posted 10 November 2005 - 05:15 PM