LITE DAC 60 & 72

Ha..ha.. I can see them now. It is no fun getting OLD.

Last weekend retest the 1541A dac of my friend which had use 4pcs single OPA and some cap had been chnage to BG. The sound is very diffrent from last time when i heard it....

the bass is much better now....

So no doubt BG is really good cap at signal path for large uf.....

WINDWSS,

Don't forget you haven't run in the caps yet. After 200 hours, I think it will be another surprise.

I am always tempted to record down the play back before and after the caps being run in. See if with my recording system, can I reproduce the difference back ... ha.ha.

CAT

Cat,

U mean u will use a tape to record down the playback? or just note down in paper on the listening test?

Hmm just receive my cap from HK... tonight can further upgrade my speaker...

i understand u had sold your proAc 1SC, so what's the speaker u r using now?

Dear WINDWSS,

Something like that ... maybe high grade MP3 player or recording pen. I don't have a Tape Recorder. Ah ... I forgot I got a "good" MD recorder.

You are right. I sold my ProAc 1SC clone this summer. I am now using the Castle Conway 3 floor standing. It is very nicely finished and gives out pretty good sound as well. Castle is the company that manufactures speaker housing for ProAc and other famous brands.

I have checked their wires and the crossovers. They use their own brand name internal wires .... and the caps are really HUGE compare with my previous speakers ....

CAT

WINDWSS,

One of my friends just told me that the original Marantz 7 uses Transistors as rectifying instead of Tubes ..... Any idea?

CAT

Original Marantz 7 use Selenium as rectifier. These type of material will generate toxic gas when blow up so basically it is no longer available. However, a lot of people insist that this is one of the factor for good sound.

Accphoto,

What do you think? Do you think the M7 will sound better using tube rectifying?

Dear Cat,

Accphoto is right it use selenium and u can't get it now.....

i myself like tube rectifier..... some like ss rectifier... so depend on your taste.... my 5687 initially is using ss rectifier but sound stage and imaging not good, space is narrow....

No harm to try tube rectifier...

yes, it sound a little bit better with tube rectifying.....
However, the M7  circuit itselves still has limitation.

[quote:131f89743a="alfcat"]Accphoto,

What do you think? Do you think the M7 will sound better using tube rectifying?[/quote]

Agree.... M7 hardly obtain very good dynamic & high resolution....by changing the cap value can extent little bit on LF but i really like the way it present the vocal....

the only problem i had now is the LF hum which can hear from the woofer at ~15cm from the woofer....even though not obvious but i wish to reduce it to zero....

Oh, I can always use the M7 for female vocals and and Pass Labs for others ... ha..ha.. :wink:

I am thinking of getting a Fostex or alike for female vocals ... I have heard that it is not very expensive (small ones) but getting the wooden box (cabinet) is indeed a headache.

CAT

Cat,

since you got both mz & passlab with you, can u try connect CDP --->M7-->passlab then to your VT60??

Meaning that M7 is used as a buffer, see whether it can have all the strength of passlab + the tube feeling of M7??

My previous post gone again ....

Oh, I can do that? How should I set the Volume Switches?

1. Turn up the Volume of M7, use the Pass Labs volume as final control.
2. Turn the volume of M7 to medium, turn up the volume of Pass Labs.
3. Turn down the volume of M7 to minimum, turn the Pass Labs to Max.

Which one should I use? Seems "1" is a good choice.

It depend on your system, as some of the preamp need to turn to certain level then only balance or sound will come out then u need it to be at that level.


For normal case since the M7 is as buffer, u just turn it to a minimum (very low volume level, if u use 24 step attenuator then step 2 or 3 is sufficient, u can alwyas play around with it)

then the main control is by your pass lab....

just let me know any changes in sound.... better or worse....

If let me guess--> will have tube feel, better vocal, but bass reduce. then dynamic & and spacing may reduce very slightly.

I will have to DIY another set of cables first before I can connect the two pre-amps together. I don't want to pull the pair from the LP as it is hard to put them back in.

Will tell you about the results later.

CAT