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Sansui G-7700....... pictures? info? anything? please?

As for THOR and the CV's/G-7700, if THOR can provide some info on the speakers- such as their efficiency, perhaps an explanation can be obtained for why the G-7700 seemed to be struggling with his speakers as he claimed. Has Thor been told by other owners of his model (and also- what is the model name or #of those spkrs?) or by CV themself that these speakers are notoriusly rough on thea majority of amps/receivers out there and that huge power (current) is absolutely essential for the spks? I'd be curious to know more about this.
 
Ask and you shall recieve:

Here are the specs:

http://audiokarma.org/forums/showthread.php?s=&threadid=124&highlight=story+and+pics

And they are just about right because I am currently running just the 15" woofers in the bottom each with their own amp, each amp provides 300 wpc, I cranked the music so loud this weekend that I tripped their protection relays, and you wonder why a 120wpc reciever had problems?

BTW I don't have the G-7700 anymore Big Mac does ;)
 
Ok Thor, I'll let you know if any more info turns up on that model. I do know of a Sansui Online friend residing in Denmark- he's restoring a BA-5000, I'll see if I can email him and if he might know anything on them. B/F.
 
Originally posted by BeatleFred
Hello NW:

Any info I have on Kenwood's & Sony would be located in the stacks upon stacks of hi fi mag backissues I have. It would be tough right now to find the time to search through it all for the info you want on those specific models. There's a site that does exist on which someone has posted many years worth of Stereo Review, Hi Fidelity, and Audio backissues and which models were reviewed in which issue- that site is moving to a new address and will be Up in the next few days. Useful for me to use as a guideline to help organize all my stuff which I am currently in the process of doing (And would be able to make more progress with if only I could ever tear myself away from this computer which I seem to be on for hours straight when I get home from work- can never seem to get caught up). When that Site is Up, I can let you know and if you see a specific issue that has any model you are interested in, it would be alot easier for me then to get the info from the mag-as I can then go right to the specific year/month. It will be enough Work for me to go thru all my mags just to index all the Sansui ads, reviews, etc... trying to do it for other brands as well would really be a daunting task. But I just might give it a try:)

As for G-7700: If you do buy it and need the manuals, I have them and making copies shouldnt be a prob. From what you mentioned: the problems it has could be a # of things- loose connections, dirty switch or some components that need replacing. Could be a simple fix or could be more complicated.
(As for the tuner section- that was the technology circa 1980 as things were transitioning from analog to digital- alot of other receivers' tuner sections had the same analog dial with digital readout- including Tuners itself such as the Sansui TU-719 which I have). Its really your call if you want to buy it or not and what max price is you want to pay. If the Seller is just gonna chuck it in the garbage, I dont see why he would be overly demanding to try and squeeze as much $$ outve you as possible. If tinkering is what you like to do, then it sounds like this unit will provide that for you. If you feel you need more asurance that it will work reliably, you can pass on it w/o worrying too much- as at some point there will be other G-7700's that come along on Ebay or other G models for that matter, so its not like you are missing a big chance to ever own one, they'll be around. Or you can consider maybe spending more and getting one that is 100% cond also. Then again, 50, 60 bucks isnt too unreasonable- If need be that its gets split into Parts, its value in Parts might exceed what its value is as a whole which might justify its purchase. Basically you can look at it from several viewpts- your call though which option you think is best for you. B/F.

first, I wanted to say, you can use Microsoft Excel (or Lotus 1-2-3) it's a spred sheet, and although the inital trouble of entering all the info in, all you gotta do is type a model, say KR-8010 and it will show you everything in the data base (that you created) with that model in it, alot of people groupd their cd's like that also, there are in infinite amout of possiblities

also, Rob is giving it to me for free, he was going to throw it away, I just have to make the shipping arangments, he dosn't want to even bother packing it or anything, so it sent it to Mail Boxes etc.. and they are the ones doing everything, so I need to call them,a nd see how much it will be, single boxed with the bare minuim of everything, I mean it's is only about $25 to ship it UPS everything else is Mail boxes etc...

I told myself if it is $65 or close to it, I'll go for it, one of the first things I would like to do is add my own pre-out/power in, that shouldn't be too hard

Rob said he had it looked at twice (a friend that does that work) the first time when he got it back, the same thing was ahppening, the second time, it worked then the Onkyo that his son was using in his room went, and he started using the G-7700 and then the right channel went bad again

I think I'll go for it, like like you said, there are alot of differnt things I could do, and I would realy like to try and fix it myself, then I can say I fixed it.

but please anymore info and all will be very helpful, are these things really sought after? or looked at with the other junk (and I use that term freely) that was made in the 80's? IMO this is like one of the last classic Sansui's, and the guts of it are very plain but also it seems simple to work on

and finaly, can someone please also tell me what DC amp is, I know it is direct coupling, but how does it differ then a normal amp or my KR-8010?
 
Perhaps I didnt mention it, I have been feeling a bit overwhelmed trying to keep up with my email correspondences and the postings on this site- been verrrry busy lately- my eyeballs are really straining... but Yes, it is my intention to put all that info in a computerized database. Which one, Access, File maker Pro, remains to be seen. I'll decide on that when the time comes. All I know I am going to have to tear myself away from this site somehow if I hope to make progress with that. Tonight is already gone- got home from work at 6:00, ate dinner, and then got onto this site and here Ive been for practically 5 hours straight. Up for Work early again tomorrow..... oh well, maybe tomorrow night I can get underway with that again (organizing all the hi fi stuff in the collection), plus much more I can think of to do- how can anyone ever be bored with themselves??

As for cd's: No need to log anything in. Check out: www.base40.com Just pop the cd's in the drive and the pgm automtically creates the dbase for you. It recently did it for the 1600cd's in my collection:)

The G-7700 is a fine receiver. Separable pre/power sections wouldve been convenient but theyre just not on the 9700...4700 Line. As I said before, ther are other Sansui models and some good deals to be had- the 9090DB is probably THE most popular Sansui receiver and the AU Series Integrateds are top notch. So you can consider those too- check out whats on Ebay and see what strikes your fancy. Why some have problems that need repairing I dunno.... in general they are very reliable. I'd never part with any of my AU integrateds, I can tell you that.

I'm about to nod off here, time to log off, next time I'll see if I can make DC clearer you, or if someone else might wanna try and give it a shot to save me the effort, but I thought I already did explain it to you. I'm not familiar w/ your Kenwood's circuitry to compare its design to Sansui's DC.

B/F.
 
thanks, I'll check that site out when I get back home

I was thinking about it, and I'll probaly go for it, I will add my own pre-out/power-in jacks, that shouldn't be too hard.

I do like the 9090DB and the AU series, but I would rather snag a SX-1280 over a 9090DB

about the G-7700, from looking at the inside of it, it look's rather weak, like when compared to other Sansui's, such as no triodial transformer, and 2 caps, which look kida small considering what the amp is.

yeah, maybe when you get a chance you can explane DC to me, I know it means direct coupling, and heard that there are no caps in the audio signal, but I don't get it, it looks like any other amp and still has caps and all, so I really don't get it.

BTW, I know how ya feel, take your time, no need to overwhelm yourself over this, Thanks
 
ok, I am now a proud Sansui owner!!!!

so I called up mail boxes etc... again, was finding other ways besides $80 for the double box and all, so she said for $50 they can drop the 40lbs. Sansui in a box, ad ship it for $50!, so 2 things came to my mind, first the Sansui which would leave in 1 piece from them, would arrive in about 3 millon pieces (granted you don't count the glass) and second, UPS only would charge $25 to ship it, and everything else is packing and stuff? (remember just 1 box)

so I went the next step up, it will be in the box, with 4 of those styrofoam corner things in all 4 corners (be about 1 1/2 inches of space from the box to the Sansui), some cardboard wafer things between the foam unit and box (after talking and being real nice she said she'll do that for free :D ) and $200 insurance brought the total to $60, so although that is still incrediably over priced, and crazy (remember $25 of that is going to UPS for shipping the thing) it is the best I could do, I wasn't going to spend $80 on shipping, and I wsn't going to just dump it in a box either, so this is ok

let's just hope it will go from Indinan to New York (gotta love NY) safley

BF when you get a chance, can ou make me a copy of the service manual, and do you have the user manual? then let me know how much you want for all that, and I'll send you a MO
 
NW- Congrats on your purchase- I'll gather the stuff on the G-7700 and make copies.

Re: "weak"- far from it. Reread the 7/80 review that was posted here-especially the latter part of the review that comments on its power reserve potential. Re: "small": Is is that much smaller than other 120W receivers you've seen- or lighter at 40lbs?

There are decent-sized heat sink fins in the back and the G-7700 output transistors will ensure that the G-7700 can be driven to its full rated power of 120W per chan w/o the slightest trace of distortion. THD is less than 0.025%.

Re: DC- Direct Coupled. Of course there are capacitors in the receiver- there has to be, but in the signal path itself, from the AUX input, for example, thru the amplifier stages- onto the Output , there is not a capacitor in that path which could cause tonal coloration or phase delay problems. Higher slew rate, lower distortion, all of which serve to produce the best quality sound reproduction. Of course, to enable pure DC, you would obviously bypass the tone controls by activating the Tone defeat switch.

B/F.
 
yeah, today while I was in school, and kept thinking about it, so I am saying to myself, well it's 40lbs. that's alot, just for compareion, my KR-8010 is 44lbs. and I am like that is built nice and solid, so that Sansui would proably be on-par with it (ITO internal compoents) or even better

yeah, in that review the thing did have some power, but why would Sansui only rate it for 8ohm, is it could handle 4 ohms with no problem, and only have trouble (due to the protection circutis) when almost clipped in 2ohms?

Thanks for explaing DC to me, now I get it, and es, for the most part I run my system with tone defeat switch on, my L100's do not need any tone or anything to sound good (although some older tracks need the highs and sometimes lows heled a tag, and sometimes when I am in the party mood, I just crank the bass, but for normal listening, no tone controls)

Thanks BF, I really appericiate you doing all that for me, when you are done, just let me know how much ou want, and I'll send a MO
 
Hello there again young lad, Sansui did make a point on their later models in the 80's- such as their AU-G series integrated amps, to list specs for power into 4 and 2 ohms. Back when the G-7700 came out though, that wasnt really the standard, in fact about two years prior, the Industry did a whole revamping on how to properly interpret power specs. Again, this can be an involved subject of which, I dont have the time now to type in a whole essay about. I'm sure in those stacks (and stacks) of hi fi mag backissues I have, there are good articles that explain the subject in detail w/o getting overly-technical about it- and when I find them I'll let you know.

I can tell you that my G-7700 has no problems handling my speakers - the incomparable Infinity Renaissance 90. Reviews say it all: http://www.audioreview.com/Main,Speaker/Infinity,Systems,Renaissance,90/PRD_119649_1594crx.aspx

I'm sure you've heard of Infinity but not that model. Trust me though, they are EXCEPTIONAL loudspeakers.

I also hope you are aware that just because an amp plays LOUD when its Volume control is '"merely" on 2, that it doesnt mean its 'like- super-powerful', right?

Later, B/F. (ps- You and Mr ProAc are going to have to simmer down, otherwise if THOR steps in and tosses some people thru the air, its all over:) (pss- Or if instead, THOR decides he wants to get you in a head-lock -fugeddddabouuutit:)
 
yeah, I am kinda uner the impression that the G-7700 is not up to par with more early Snasui, oh well, guess I will have to wait to actualy see it

yeah, they wont have a problem at all, although I really don't have a use for it, maybe if I actualy get it working, I will use it to power my woofers, and between my 2 KR-8010's, make 1 real nice one with the best of the best

yeah, I know all abou the volume thing, my little KA-1500 by the time you get to about 3 -3 1/2 (out of 10) it is already at it's max (little 20wpc jobber)

yeah I think the thing between me and Proac has been settled (through the use of PM) still kinda fuzzy, just alot of misunderstandings

about the Sansui though, I am really happy that I am getting a rather big Sansui G rec. but am under the impression, like I said, that it is not at par with the other Sansui's etc.... ahhhh I just wanna get it and then check it al out and stuff, I am kinda excited about getting it, it'll give me something to mess around with, I wonder though how it will stack up against my KR-8010, although I am hearing the tuners in Kenwood's are great. although the Sansui was $100 more when it was new (sold about the same time)

ah well, it's getting late, I'm gonna go to sleep now, talk to everyone tomorrow
 
Sigh..... what am I gonna do with you, Laddie... Havent I made it clear enough to you that the G-7700 is a fine receiver? So then why do you persist with this notion that its lacking compared to other Sansui models- I never said that. I might have to arrange to have Mr THOR put Ya in a headlock for yer own good.

As for Power/ Volume: I dont know if you see where I'm coming from either. I have a Sansui AU-20000 amp. Made in 1977. A real beauty. 170W- which according to its wattage makes it the most powerful amp I own. Yet, if I want to play music a lil bit more on the Louder side- I have to turn up the Volume control higher on the AU-20K than all my other amps- how can this be (?) with a 170W amplifier, your young inquiring lil mind might ask.

Well, its simply that the Volume control is in 3db increments all the way around the dial from left to right on the AU-20K: -60,
-57, -54.... and so on till 0DB. Compare that to other models where the rate of DB change is typically greater- such as: -60, -54, -48, -42, -38.... thus, to get to -30DB on the AU-20K requires that the Volume control be turned up past halfway mark whereas on the others, -30 DB is located at the 10 oclock postion. But make no mistake about it- the AU-20K IS powerful- it maintains the 3db increment whereas the others fall off, so while they peak out at some point, the AU-20K continues to pump it out. See what I mean, Laddie? And when I use the word 'pump'- please dont get yerself too excited there, ok? We'd all appreciate that:)

Power & Volume are not linearly related. Just like our Hearing. Its logarithmic. Good example: if you stand next to a plane on a runway that has say a sound level of 130DB- what happens if a 2nd plane came along and parked next to it? What level would your ears be hearing then? Answer: 133DB which is logarithmic. Not 130 + 130= 260DB which would be linear. Otherwise, if that were the case, your ears would be blown out by the two planes. Got it?

Anyway, enough lecturing. I suggest that you just wait until the G-7700 arrives and then you can let us know what you think of it.

B/F.
 
Yup, what B'Fred said!
I'll guarantee the G-9700 is one big mofo receiver, no doubt about that!
Like BF mentioned, I DO rather like it a lot. There, I've said it again. I'll most likely say I like in the future, too.
And, I'm not just comparing the big G with the other 5 receiver-based systems here, but also against the four (currently) BIG separates-based kits I have together.
I have the big Yamaha, Pioneer, Kenwood, Concept and Onkyo, besides the Sansui. A dozen big separate amplifiers. Between the receivers, really not a spits worth of difference. Choosing one would be choosing the one that just 'felt' right to the individual doing the picking. By that I mean the choice simply cannot be made by specs alone, they are virtually the same. The choice would be based on those intangibles of subjectivity.
Gotta be plain as the nose on Barbra Striesand's face that Sansui believed the G-series was an improvement on what came before.
Spec-wise, at least, distortion, for example, was way lower than the 9090's.
What does it all mean? Go with what 'grabs' y'all!
My subjective choice as 'best' among my group of receivers is the Concept 16.5.
To thine own self be true.
Eh, what?

pete
 
Originally posted by BeatleFred
Sigh..... what am I gonna do with you, Laddie... Havent I made it clear enough to you that the G-7700 is a fine receiver? So then why do you persist with this notion that its lacking compared to other Sansui models- I never said that. I might have to arrange to have Mr THOR put Ya in a headlock for yer own good.

As for Power/ Volume: I dont know if you see where I'm coming from either. I have a Sansui AU-20000 amp. Made in 1977. A real beauty. 170W- which according to its wattage makes it the most powerful amp I own. Yet, if I want to play music a lil bit more on the Louder side- I have to turn up the Volume control higher on the AU-20K than all my other amps- how can this be (?) with a 170W amplifier, your young inquiring lil mind might ask.

Well, its simply that the Volume control is in 3db increments all the way around the dial from left to right on the AU-20K: -60,
-57, -54.... and so on till 0DB. Compare that to other models where the rate of DB change is typically greater- such as: -60, -54, -48, -42, -38.... thus, to get to -30DB on the AU-20K requires that the Volume control be turned up past halfway mark whereas on the others, -30 DB is located at the 10 oclock postion. But make no mistake about it- the AU-20K IS powerful- it maintains the 3db increment whereas the others fall off, so while they peak out at some point, the AU-20K continues to pump it out. See what I mean, Laddie? And when I use the word 'pump'- please dont get yerself too excited there, ok? We'd all appreciate that:)

Power & Volume are not linearly related. Just like our Hearing. Its logarithmic. Good example: if you stand next to a plane on a runway that has say a sound level of 130DB- what happens if a 2nd plane came along and parked next to it? What level would your ears be hearing then? Answer: 133DB which is logarithmic. Not 130 + 130= 260DB which would be linear. Otherwise, if that were the case, your ears would be blown out by the two planes. Got it?

Anyway, enough lecturing. I suggest that you just wait until the G-7700 arrives and then you can let us know what you think of it.

B/F.

no need to explain all that to me, as I already know/understand all that, and I know all about the volume knob, some people have the vibe that becuase the volume knob is only halfway, that the amp is only using half it's power, and it can get twice as loud or whatever they think, it's just another one of those things in audio that, for the mass consumer market, people don't know, kinda like how they think if your speaker says 300watts you need and must have a 300watt amp

what I was saying, was when I look at other Sansui's from a few years eailer, they had bigger triodial transformers and bigger caps, I am not saying the G-7700 is bad, or weak or anything, but saying it looks, er..... not as beefy then the other Sansui's

it should get here Monday, neat then I can see what's wrong with it, and start messing with it
 
BF, do you have the user manual and the service manual for the G-7700 or just the service manual?

Thanks
 
Hello Lad- I have the brochure, the service manual, and the operating manual. I made copies of them all earlier today for you-so send a p- message to me on this site, or email, so we can complete the transaction and I can mail them all out to you.

B/F.
 
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