Mod your Beresford TC-7510

[kalozois100]

I give you 2 weeks and you'll be looking to change/mod again.

"" And ye shall know others as ye knoweth thy self "

[trailer]

Guilty as charged millord.

[kalozois100]

Guilty as charged millord.

We are all guilty of the same passion m8! but just for the moment to be content with the sound we hear is a very precious moment because as you say we all know it comes full circle , we go cold turkey and seek the next audio " fix " to further quality in sound......its in our nature...... and why we are on forums so we are not alone with this phenomenon. Anyway Its how I see it

[freddiecas]

as well as Mod 21 part 1 and 2, I swapped the 2200uF main smoothing caps for 4700uF 16V which just fit under the hood. (I use the Maplin 5A supply). Can't say I could hear much of a difference just from that swap, but the op-amp swap etc is REALLY worthwhile.

I shall remove the ceramic 0.1uFs across EC8 and 9 and replace with polyester or polypropelene too I think.

If I could only get the volume knob off ! I would beef up the smoothing on the front board and replace those mylars and see what could be done to the headphone amp.

[trailer]

I've just got round to listening to the 7510 with the BG/LM4562/Wolfson mods.

A quick question before I post on the sound (as I haven't had much of a chance to give it a proper listen yet). There seems to be a lot more hiss at highish volumes. The fixed output is quite high and I am having to use the variable output to get rid of this.

I suspect that this is something to do with the new DAC chip? Suggestions would be appreciated!

If Kalazois100 is interested I have a spare Wolfson DAC chip which I will happily post to you gratis if you want it?

[StanleyB]

There seems to be a lot more hiss at highish volumes. The fixed output is quite high and I am having to use the variable output to get rid of this.
I suspect that this is something to do with the new DAC chip?

The WM8716 has no analogue filter built in like the PCM1716E has, and the TC-7510 does not make use of the digital filter. So your output from the WM8716 relies solely on the partially filtered O/P around the opamp.

[trailer]

The WM8716 has no analogue filter built in like the PCM1716E has, and the TC-7510 does not make use of the digital filter. So your output from the WM8716 relies solely on the partially filtered O/P around the opamp.

Thanks Stan,

You know what the next question is going to be..............

[kalozois100]

I've just got round to listening to the 7510 with the BG/LM4562/Wolfson mods.

A quick question before I post on the sound (as I haven't had much of a chance to give it a proper listen yet). There seems to be a lot more hiss at highish volumes. The fixed output is quite high and I am having to use the variable output to get rid of this.

I suspect that this is something to do with the new DAC chip? Suggestions would be appreciated!

If Kalazois100 is interested I have a spare Wolfson DAC chip which I will happily post to you gratis if you want it?

Many thanks for the offer for the wolfson chip but i am very happy with the sound from the TC-7510. I do not intend to modify it any more.The combination of new opamp with black gate caps has pushed the dac into a league i could not have afforded with a cd player.it is now time to for me to get back to listening to music after all the mods. Perhaps someone else can benefit from your spare wolfson chip? (p.s. look out for the new thread i am about to open)

[trailer]

I've had a chance to listen to the modded 7510 today for a decent listen. It is very very good. With regard to the filtering on the Wolfson chip if anyone has any suggestions on how this can be done then I would be grateful of the input.

[leo]

Have you looked at the datasheets for the wm8716 evaluation boards? there should be some details in there to give you an idea