Using a CD7000 connected to the BM6000 type 225x TP2 phono input I find the amplifier volume level needs to be set very much higher to achieve the same sound output as an FM transmission or from the Phono/TP1 DIN inputs. Is there a way to increase the sensitivity of the phono inputs? I tried another source (MS Zune) and it's the same. I used a CDX for years without a problem on these inputs but there appears to be a fault.

Hi

 There are no adjustments for input sensitivity on the TP1/TP2 or phono inputs. But the output level from the FM tuner is adjustable inside BM6000. In my system the level of the FM tuner was higher than any other inputs so i had to adjust the output level of the FM tuner to match the rest of the inputs. 

/Fredrik

Hi Frederik,

I seem to remember my getting the play/records mixed up! They are not easy to get at when everything is connected up. You are correct that FM does have a higher output level generally. This has always been the case with my 6000 since new but I also find the same with Beocenter 9500.

Regards

David

Hi David

 

I've no experience of the 9500 system but on my beosystem 4500 the signal level on all inputs and tuner are equal. Btw the CDX player had quite a high output level  I think in the range of 2v at 0db. My CD4500 have an output level of approx 1v at 0db. It's a 3db difference! Perhaps it's the same with your CD7000 and that's why you didn't notice any difference between FM and CDX? If you have the user manual of the CD7000 you can probably find the output level in the technical spec section.

/Fredrik

It's 1.3v against the CDX's 2! Would that explain the lack of warmth and bass in the sound? The CDX worked well with the BM6000 but the DVD1 actually sounds better than the acclaimed CD7000! I have yet to use a BM6500/7000 which would be better suited in all respects.

On the 9500 CD and FM are the same but AUX and Tape2 obviously vary with sources. I previously thought that 'line level' was the same on all (not just B&O) products.

David

Hi

 

I don't think the signal level itself is to blame for the lack of warmth and bass - that's more likely to be the characteristics of the player. Players sound different when compared to eachother.

Line level is if I'm right 0.775v at 0db. I've also noticed that equipment differ quite alot between brands and/or models. I don't know why. But since lowering the output on my FM tuner in the BM6000 I don't notice the difference that much. It was annoying when I listened to a record and then switched over to FM while changing record - it was sometimes close to change the pants cause it was a huge difference. Now it's not a problem anymore. I don't know but maybe the FM stations in my area transmit with a level a little higher than standard cause I have the same issue on other receivers of different brands - that the radio is higher than other sources.

/Fredrik

My BM6000 is no longer used as a main system as I now use MCL2 rather than MCL82. I really enjoyed the amp over 25 years of daily use and it still sounds superb.

It would be useful to tweak the level on the inputs occasionally. As you say FM also varies so hopefully you have achieved a good compromise with lowering the output.

Regards

David

Yes, individual adjustments is best - like bm8000 have. It is of course possible and easy to make a little box with individual attenuators and/or amplifiers in it to compensate for diffenent signal levels.

I use the 4500 system as main system in the living room. Then I have the 6000 system in the "vinyl" room. I have recently restored the bm6000 with new caps, trimmers and fixed missing segments in the display. So when it was open I readjusted the FM output so now it's fine. There is a huge change in sound after replacing the old capacitors. I really like this system.

/Fredrik