Mod your Beresford 7520

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13-05-2010, 06:38
RoboCopper

Quote:

Originally Posted by StanleyB

MLC5/6 affect the soundstage and focal presence. If you remove them you get a wider soundstage with a slightly laid back midrange.

Hi Stan,
So removing MLC5/6 will affect midrange to go back, instead of forward as it seems now on my 7520(only mod I did is LM4562NA opamps)?
Thanks
13-05-2010, 06:41
StanleyB

Quote:

Originally Posted by RoboCopper

Hi Stan,
So removing MLC5/6 will affect midrange to go back, instead of forward as it seems now on my 7520(only mod I did is LM4562NA opamps)?
Thanks

As I said :). SO you can use MLC5/6 to compensate for speakers that are too forward in the midrange.
13-05-2010, 07:51
MartinT

I've ordered a pair of AD826 for my Caiman, will compare them with the LM4562. Just out of interest, though, as I'm well impressed with its performance at the moment.
13-05-2010, 08:55
Butuz

Quote:

Originally Posted by Codifus

You know that the 49720HA is supposed to be a refined LM4562NA?
Also, when swapping opamps you really need to let the system settle in. Constantly playing music for 3 weeks, yes, 3 weeks minimum, for starters.

Yep - I agree with you now! I put the 49720HA metal can back in last night and I think it does have the edge over the LM4562NA. It seems to have a slightly bigger sound stage and generally seems a bit more accurate. Maybe ever so slightly less bass though.

Loving it at the moment!! Everything sounds great!!! Well apart from Coldplay but I don't think any op amp can help that :p

Butuz
13-05-2010, 09:21
MartinT

Quote:

Originally Posted by Butuz

Well apart from Coldplay but I don't think any op amp can help that

Don't you just want to shoot their engineer?
13-05-2010, 12:04
Ali Tait

Hung,drawn and quartered more like!
13-05-2010, 19:40
Maximum

Quote:

Originally Posted by RoboCopper

Hi, as English is not my 1st language, I am not sure what would mean "You're through the looking glass now mate" in previous context? (I did search for that phrase on Google, but still do not get it).
Anyway, would you suggest removing those caps mods first or shall I try 4-5 different OpAmps first?
Cheers

If you've seen 'The Matrix' I suppose you could say it's like taking the red pill, in that you won't be able to go back to how things were before. In other words, you wont be able to stop fiddling now you have started.

Personally I found the removing them opened up the sound a lot, but then I haven't really got the skills to put it back in place to compare, it was a leap of faith and the tight space led to me damaging the cap slightly, so I just removed them altogether.
13-05-2010, 19:52
Codifus

Quote:

Originally Posted by Butuz

Yep - I agree with you now! I put the 49720HA metal can back in last night and I think it does have the edge over the LM4562NA. It seems to have a slightly bigger sound stage and generally seems a bit more accurate. Maybe ever so slightly less bass though.

Loving it at the moment!! Everything sounds great!!! Well apart from Coldplay but I don't think any op amp can help that :p

Butuz

Are you using the LM49720 in both opamp sockets or just one?

CD
13-05-2010, 21:57
Butuz

Quote:

Originally Posted by Codifus

Are you using the LM49720 in both opamp sockets or just one?

CD

Just in the Pre/Fixed socket with LM4562NA in the headphone socket.

Why? Do both sockets make a difference???

Butuz
14-05-2010, 00:05
Codifus

Quote:

Originally Posted by Butuz

Just in the Pre/Fixed socket with LM4562NA in the headphone socket.

Why? Do both sockets make a difference???

Butuz

Yes they do. And so the possibilities do increase:)

CD

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