Scary! my old panasonic portable performs better than the GC!!

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demogorgon

demogorgon

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Joined 2004
#1
uhh.. how do i say this?

I had to take my GC to school again to run some tests on it and build the chasse, and so i plugged in my trusty old panasonic RX-CT900 portable casette and radio thingy with phono in's.

the first thing that struck me was the pure and well deffined treble, then the clean open mid's and the subtel, yet good bass.. it outperformes my lm3886 CG...

it makes the music so much more engaging and dynamic, not to nempton that a lot more detales are coming through..

wonder what chips are in there?
this is a litle scary actually..

i use a couple of unnefficient DIY 2-way speakers with seas tweeters, cat5 as speacercables and a audigy2 std. edition as a source if anyone wants to know..

-marius
 
#5
demogorgon said:
my trusty old panasonic RX-CT900 portable casette and radio thingy with phono in's.

the first thing that struck me was the pure and well deffined treble, then the clean open mid's and the subtel, yet good bass.. it outperformes my lm3886 CG...
if anyone wants to know..

-marius
Click to expand...

Marius,

Can you post the schematic, I think I might build a PanasonicGlone or PG. 😀

I think you have learnt a valuable lesson here. Audio is about what you like and you have to try things for yourself. You can't trust others opinions (to much) because we all have different tastes and expectations. Also, when comparing any item of hifi equipment it depends greatly on the other components in the system and the room and furniture.

BTW: Have you been drinking, taking medication or listening to devil music? 😀
 
#6
Re: Re: Scary! my old panasonic portable performs better than the GC!!

janneman said:
Marius,

This is a Politically Very Uncorrect post. I doubt you will get a lot of replies...

Jan Didden
Click to expand...

you are totally correct. i suspected as much.

UrSv said:
I suspect you are having one of two problems:

1. Your GC is performing worse than it could.
2. Your Panasonic is performing way better than expected.

Number 2 might not be considered a problem.
Click to expand...

No, it may not.. actually i have given the puzzeling litle panasonic some more thought:

what it really has other than the GC is faithfulness to the music.. and midband magic as Carlos would call it. and i have thoughts as to why. i'l have to try it up against my lm4700 amp, i'v got the repacement ic now. i think the panasonic uses a power opamp and has cut dramaticly down on capasitans.. but i dont know until i'v opned her up.

janneman said:



I see you (unconciously?) left out another possibility:

3. The GC works normally, and the Panasonic works normally.


Jan Didden
Click to expand...

i dont have the lm3886gc here now, so a "blindtest" isn't possible.
i'l have to come back to you on whos actually the best.
the panasonic doesent put out a lot of power though, thats for shure. i link that to my thought of low capasitans..
(i bet you think i'm trying like HELL to convince myself that the cg is actually better now, arnt you? 😀 )

grege said:


Marius,

Can you post the schematic, I think I might build a PanasonicGlone or PG. 😀

I think you have learnt a valuable lesson here. Audio is about what you like and you have to try things for yourself. You can't trust others opinions (to much) because we all have different tastes and expectations. Also, when comparing any item of hifi equipment it depends greatly on the other components in the system and the room and furniture.

BTW: Have you been drinking, taking medication or listening to devil music? 😀
Click to expand...

about that clone, that may turn into reality, as soon as i rip open it's guts.. but not right now, i'm enjoing the music to much..

the first time i'm testing the amp with the audigy and speakers though.. the treble is where teh audigy wins over my last card.. the old one had a bandwith of 16kHz..

as for "Devil music", you'd be surprised..
and drinking? only coke, and a Tuborg for dinner.
it takes a whole lot more than one to make all women beautiful, all music good and and the panasonic and my GC high end 😉 .
 
#9
demogorgon said:
the first thing that struck me was the pure and well deffined treble, then the clean open mid's and the subtel, yet good bass.. it outperformes my lm3886 CG...
Click to expand...

Come again?
Panasonic portable?
Equalizer? Loudness? Bass Boost?😀

Come on Marius, do you call it neutral?
I point on some directions: the Panasonic (k7+tuner) is better as a source than your source :bawling: and/or it's built-in speakers are way better than those you have at home.:bawling: :bawling: :bawling:
Comparing oranges with apples?😕
 
#12
A long time ago, a friend of mine bought a very large pair of JBL L-200 speakers. he didnt yet have a stereo, but just for fun we hooked up his Panasonic Jambox up to the JBL's we figured the radio wouldnt get very loud but what the heck! what a surprise! it sound dang good at low volumes and even had some decent bass! quite the shocker!

He ran that set up for over a year before he was able to step up and get some new gear!


ZC
 
#13
These things are developing in an interesting direction. Quality sound reproduction is found in the most unlikely places.

I have a $12 sony clock radio, which has until now been misused as a wake-up device. Do you guys think it might have hidden Hi-fi qualities?. I'm shure it has some chip-amp inside. Maybe I should upgrade it with some Black Gates and point to point silver/teflon wiring, and make it the heart of my new super hi end setup.

Any thoughts/ideas? The thing is mono, but hey, that might be the way of the future...
 
#15
Re: Re: Scary! my old panasonic portable performs better than the GC!!

scottw said:
Is the "panasonic RX-CT900 portable casette and radio thingy" running on batteries?

scottw
Click to expand...

not at the moment, no..
but you may have sparked my interest..

a lot of pople say chipamps behave better on batteries..

moamps said:


POWER AMP - AN7133,
PS - single 15V, C - 4700uF/25V

regards,
Milan
Click to expand...

you have opned upone o theese?

carlosfm said:


Come again?
Panasonic portable?
Equalizer? Loudness? Bass Boost?😀

Come on Marius, do you call it neutral?
I point on some directions: the Panasonic (k7+tuner) is better as a source than your source :bawling: and/or it's built-in speakers are way better than those you have at home.:bawling: :bawling: :bawling:
Comparing oranges with apples?😕
Click to expand...


Carlos, i'm dissapointed with you.. offcource all that **** has been turned off! how could you think that off me!

and, yes, i would call it a lot more neutral than my GC.. in the very least in the treble area..
K7? wtf? yes, my source isn't good, but i have a cdplayer comming my way in a week or so, i'l be testing more then.
the buildt in speakers were the most crappy garbage i'v ever heard.
They were burned some 4 years ago i think..

oranges and apples?
chip VS chip i would say...
remember that chipamps were disregarded for the longest time until some guy desided to crank open his gaincard..

Tekko said:
I have seen in other threads that LM3875 sounds better than LM3886.
Click to expand...

I havn't tested the two chips in the same circut under the same conditions, but that may very well be the case, but then there are a lot who say the opposite..

Zero Cool said:
A long time ago, a friend of mine bought a very large pair of JBL L-200 speakers. he didnt yet have a stereo, but just for fun we hooked up his Panasonic Jambox up to the JBL's we figured the radio wouldnt get very loud but what the heck! what a surprise! it sound dang good at low volumes and even had some decent bass! quite the shocker!

He ran that set up for over a year before he was able to step up and get some new gear!


ZC
Click to expand...

Thanks for sharing. it sounds a lot like what i have found with te panasonic.

Joachim_b said:
These things are developing in an interesting direction. Quality sound reproduction is found in the most unlikely places.

I have a $12 sony clock radio, which has until now been misused as a wake-up device. Do you guys think it might have hidden Hi-fi qualities?. I'm shure it has some chip-amp inside. Maybe I should upgrade it with some Black Gates and point to point silver/teflon wiring, and make it the heart of my new super hi end setup.

Any thoughts/ideas? The thing is mono, but hey, that might be the way of the future...
Click to expand...

be sarcastic, i dont really care too much..
i just wanted to tell people that i may have found a worthy IC for quality audio purpoces..


Upupa Epops said:
To grege : " ... audio is about what you like ... " and what you like is about what you know. Why can't be some Panasonic better than GC ? Is GC " sound endstation " and guys from Panasonic only deaf donkeys ?
Click to expand...

Guess some donkeys have ears..
i had an panasonic surround amp a few years back too, and that was far from this one in sound.. it actually sucked so increadible that i cept it for a few weeks only..
it could have been helped by the cervin vega 2.1 setup as well though...
 
#16
Joachim_b said:
I have a $12 sony clock radio, which has until now been misused as a wake-up device. Do you guys think it might have hidden Hi-fi qualities?. I'm shure it has some chip-amp inside. Maybe I should upgrade it with some Black Gates and point to point silver/teflon wiring, and make it the heart of my new super hi end setup.
Click to expand...

Hey, you could also change the crappy small internal speaker by some Fostex.😀
High-end is getting to very affordable prices!😎
Some call an iPod a decent source, now it goes to Panasonic portables...:bawling:
I'm all excited to sell my system, buy a portable and with the extra money go on vacation to a desert island.😎
 
#19
I have a $12 sony clock radio, which has until now been misused as a wake-up device. Do you guys think it might have hidden Hi-fi qualities?. I'm shure it has some chip-amp inside. Maybe I should upgrade it with some Black Gates and point to point silver/teflon wiring, and make it the heart of my new super hi end setup.
Click to expand...

guess what, i did similar thing
took apart such clock/radio, dont remember brand, upgraded filtration of power supply (no other fancy stuff) and insted of built in speaker used big open baffle consisting of 12" magnavox woofer and 4" sansui fullrange (I had these only as single drivers)
amazing sound on fm for such a small thing (relatively speaking offcourse)
i expected poor bass, but was surprised, those radios usualy have bass and trebles elevated
enough loud for a small room with efficient speakers
 
#20
Hi,

It seems that some folks here are highly sceptic about chips other than lm 3875 or 3886....

I have built a small chip amp using TDA8560Q. It has low power, but sounds very good on B&W DM 601... (Chip is battery powered-using one 12v SLA)

On the other hand, I don't think that every toy out there that has a chip amp inside will sound great, no matter what you do. (change caps, power supply, etc)

As for the source, I agree that one needs to have a pretty good one to be able to notice chip's pros and cons....

Carlos, what do you consider to be a decent source? The one that we must have when we compare stuff? Some folks say that Audigy can sound great, but it seems that you aren't that impresed...

I am using a PHILIPS DVD player. Been thinking about buying an "AUDIO CD only" player...

Regards,

Vix
 
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