Input on volume output from CA 740 A - feedback from owners

[mayukh80]

Hello,
I got a deal from a dealer to exchange my existing CA 540 A with CA 740 A with paying an additional 12k.

I bought the amp home for audition. During playing i found that the output from 740 A is feeble upto -30dB ( 65% of total volume ). After that its quite rich and loud. Whereas in my existing 540 A, at 40% volume the richness and punch is there.

One of a good member @sandeepss told me that it could be due to non linear curve of volume in higher end mode.

I need to decide by this week before i return the 740 A.

Looking forward for inputs from 740 A owners

 

[sunand777]

Check this....

Why do I have to turn the volume control on my 851A up past halfway to get the volume level I want. Is this normal?

The 851A volume control is slightly different to other Cambridge Audio amplifiers. The volume control is a completely linear scale so halfway is exactly 50% of the rated output. With amplifiers tha...

techsupport.cambridgeaudio.com

I think 740a is also using same method as 851a..

 

[Ashenden]

This is the screenshot from CA support page on non-linear pot

 

[mayukh80]

This is the screenshot from CA support page on non-linear pot
View attachment 37736

So what i can deduce is CA 740 A falls in this range of non linear one.
You rock man @sandeepss

 

[Ashenden]

So what i can deduce is CA 740 A falls in this range of non linear one.
You rock man @sandeepss

After you settle down to the new setup do post a short review comparing the two amps. Best wishes

 

[mayukh80]

After you settle down to the new setup do post a short review comparing the two amps. Best wishes

Sure !!! Have been listening to my favourite musicians right from Freddie to Rory Gallagher since last few hours.

The 740 A maintains the richness on the entire spectrum in 80% volume. The clarity is outstanding.

My existing 540 A is not a bad runner but some elements gets lost after cranking the volume beyond 60%. You can say “noise” would be the nearest expression to convey the feeling.

Would try out classical music and piano shortly. I am sense that it would be one helluva ride.

 

[mayukh80]

After you settle down to the new setup do post a short review comparing the two amps. Best wishes

Hello ,
Have another offer from the guy. A kenwood preamp for 740 A for 4k.
Asked him to share the model and detail.
What do u say?

 

[Ashenden]

Hello ,
Have another offer from the guy. A kenwood preamp for 740 A for 4k.
Asked him to share the model and detail.
What do u say?

If you’re happy with the sound signature of 740a it’s better not to add anything else now and keep it simple.

 

[mayukh80]

If you’re happy with the sound signature of 740a it’s better not to add anything else now and keep it simple.

As of now awesome.... got the IC changed from DAC to monster cable. A shift in dynamics.