Mod your Beresford 7520

I have managed to close the case of my 7520!

I kept looking at trailers pic and noticing that my amp board was much higher off the headphone socket than his was. I took out the amp board and then noticed that the all of the components had about 3 mm of wire sticking out from the solder and that this was preventing the board from being closer to the headphone socket. I snipped off the protruding wire and voila my THS4032 now (just) fits inside the case....

But when I tried it I got the crackle that was mentioned by other THS4032 users. Luckily I had 2 of them so swapped the Fixed Output OpAmp for the Headphone Amp. But be warned, the THS4032 does seem to be very sensitive..

Ade

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Originally Posted by rhmjmango

Ány of you notice a significant difference in the way the cab is soldered by 'Sponge' and how 'Trailer' soldered the cap????
It handles the job one way or the other i suppose!?

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The difference is that I soldered the cap directly to the IC's pins and Trailer has soldered the cap to the adapter board pins.

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Originally Posted by apmusson

I have managed to close the case of my 7520!

I kept looking at trailers pic and noticing that my amp board was much higher off the headphone socket than his was. I took out the amp board and then noticed that the all of the components had about 3 mm of wire sticking out from the solder and that this was preventing the board from being closer to the headphone socket. I snipped off the protruding wire and voila my THS4032 now (just) fits inside the case....

But when I tried it I got the crackle that was mentioned by other THS4032 users. Luckily I had 2 of them so swapped the Fixed Output OpAmp for the Headphone Amp. But be warned, the THS4032 does seem to be very sensitive..

Ade

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I've just had a look at mine and I'll have the same problem. However I didn't just have a sticky pad under my amp board there was also loads of hot melt glue. I managed to carefully remove it all and get the board to sit a bit lower. I don't have any side cutters at home though so I'll have to wait till next week to trim the pins.

One thing to be careful of though is that there are two tall caps under the amp board which could short out pins if you lower the amp board all the way down. I put some tape over the caps to prevent this.

How are folk finding the 4032s soundwise?

The sound of the THS4032 is (sorry for the Americanism) awesome. Best of the opamps I have tried (4562s and originals). Great dynamics, neutral and easy to listen to, Its all about the music with these beauties.

Definately my favorite opamp (THS4032) right now, unless someone can come up with something better I am very tempted to remove the DIL socket and solder these in place.

Also very tempted to upgrade the dac to a later Wolfson unit :)

Stop it, stop it. I'm trying to forget about op-amps for a while. :doh:

When I mentioned that the THS4032 were the one I liked most and recommended, I didn't expect so many people to take me up on that:scratch:.
But I am glad you guys agree with me on the end results:).

Stan

stan you have created a tweekers delight, there is no longer recession in the opamp manufacture sector

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Originally Posted by hamish_gill

stan you have created a tweekers delight, there is no longer recession in the opamp manufacture sector

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It's one way of getting people involved with the music from several angles;). I wanted to fit those surface mount THS4032 as standard, but a lot of people asked why I hadn't fitted a socket in the TC7510 so that folks could try out different chips. So in the TC7520 had to have a socket with at least a recognized decent chip as standard. If I had fitted a set of more expensive LM4562's instead and people wanted to try something else, then straight away you would have blown about £10 on the price of the TC7520 on a set of now redundant LM4562's. And fitting THS4032 in sockets is not the type of thing you do on any production line.

But there is more:eyebrows:. I am already experimenting with other mod possibilities that would be practical and relatively easy for the average electronic hobbyist to perform.

STan