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  #1  
Old 04-07-2011, 02:34 PM
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Question Technics SU-G91

I'm new to hi-fi but I've been looking around goodwills and thrift stores recently and I found a Technics SU-G91 amp with a matching tuner, tape deck, and a pair of speakers I didn't recognize. It's listed at $125, is this a good deal? Also, as a newbie, what should I check for in the system?
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Old 04-07-2011, 02:47 PM
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Unless the speakers are something worthwhile there is no way I'd pay $125. I think they are highly overpricing it. Nothing special about Technics gear. You can probably find something better on Craigslist or keep looking in thrifts.
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Old 04-07-2011, 02:49 PM
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Ok, thanks
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Old 04-07-2011, 03:05 PM
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Doesn't the "SU" denote a Class A amp? From what I've been able to gather, that's a 130 watt per channel amp.
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Old 04-07-2011, 03:19 PM
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Quote:
Originally Posted by GuyNoir View Post
Doesn't the "SU" denote a Class A amp? From what I've been able to gather, that's a 130 watt per channel amp.
Maybe "New Class A" which ain't Class A. The amp should be decent though for that era.
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Old 04-07-2011, 05:54 PM
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Quote:
Originally Posted by Water View Post
Nothing special about Technics gear.
Are you just being rude or plain ignorant? Totl Technics gear is really really nice stuff.

http://wegavision.pytalhost.com/tech...RS1800-001.jpg

Or google Se A1 SU A2... Both items, if you can find them, which I highly doubt, will be very expensive. Find me a A2 that works and I will buy you a new small car.

For about, 1500+ you can, if you find one, get a SE A3 MKII. It is to me the most beautiful amp ever produced.

I won't start about the turntable that was used in every radio station and club in the world.
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I think the reason it hums is because it doesn't know the words.

Last edited by ev13wt; 04-07-2011 at 06:01 PM.
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Old 04-08-2011, 01:35 AM
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I have a modest SU 8080, circa 1977. Cast aluminum faceplate, dual mono design. I bought one in in 1978 and sold it, a few years ago I bought a used one and repaired/recapped/refurbed it. I like it, it works well with my efficient speakers.
Bottom line, you need to do your research before judging Technics.
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Old 04-08-2011, 04:23 AM
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G91 is circa 1992 130W/ch with 20watt surround channels. Punchy amp, tho heatsink is too small. Make sure the cooling fan works if you crank it up (try this with no speakers connected) put spkr A on and then when the power meters head to the 10w bracket the fan oughta kick in. Other than that this amp doesnt have any bad points.

Oh ev13wt Im fortunate enough to have 2 SE-A3MK2 power amps I love em!
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Old 04-08-2011, 04:46 AM
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Originally Posted by SVI2004A View Post
Oh ev13wt Im fortunate enough to have 2 SE-A3MK2 power amps I love em!

You don't need two, you should just send me one!

I know where I can get one, I'm still saving up for it. The "government" of the house will kill me if I just go out and spend 1500 on some amp, although she likes the looks of it too. I almost got an A5, but it doesn't really compare.

I admit, I am a bit envious.
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Quote:
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I think the reason it hums is because it doesn't know the words.
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Old 04-08-2011, 09:15 AM
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Quote:
Originally Posted by ryuuoh View Post
I have a modest SU 8080, circa 1977. Cast aluminum faceplate, dual mono design. I bought one in in 1978 and sold it, a few years ago I bought a used one and repaired/recapped/refurbed it. I like it, it works well with my efficient speakers.
Bottom line, you need to do your research before judging Technics.
I also have a beautiful SU 8080 and the ultra rare SU-V909.(in Technics Black/Brown)....both wonderful amps....
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Old 05-01-2011, 01:24 AM
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I really need some help getting a remote to operate the SU-G91. I did some research and I found the RAK-SA902MH remote is supposed to operate the SU-G91 so I found one on ebay and bought it. Got it the other day but it doesnt work with it. I also have the ST-K55 tuner which it doesnt work with either. Here is what I am guessing...
on the back of the amp (SU-G91), there is an input for a cable that says "remote". Now, there is no sensor on the front of the unit for a remote, but there is one on the front of the tuner. I think the tuner I have isnt supposed to pair up with the amp that I have because there is no output for a remote cable on the back of it. I did however find a tuner on ebay (ST-K50) which does have the output for the remote cable. So I'm assuming this tuner I found on ebay is made to be paired up with the SU-G91 which will accept the remote command and send it to the amp through the remote cable. Before I go and replace the tuner I currently have with the one from ebay, I just wanted to make sure if my assumption is correct. Thanks!
Also, it looks like just a regular headphone jack cable (double sided of course) will send the remote signal. Is this also correct?
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Old 05-01-2011, 02:35 PM
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You are correct the ST-K50 will work with this.I have the SU-G70 amp and that's what came with it.These amps run hot so it's not a bad idea to reflow all the solder joints.
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Old 05-01-2011, 08:57 PM
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Quote:
Originally Posted by elduce View Post
You are correct the ST-K50 will work with this.I have the SU-G70 amp and that's what came with it.These amps run hot so it's not a bad idea to reflow all the solder joints.
So the ST K50 will work with BOTH the SU-G70 and the SU-G91?
Also, what type of cable do you use to sene the remote commands from the tuner to the amp?
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Old 11-17-2011, 02:46 AM
jz1276 jz1276 is offline
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Two more ?'s about this amp. First, I'm assuming it came as a system with the tuner/cd player, etc. Does anyone know the model of the CD player it came with?

Second, I'm having some problems with the spkr. terminals. I have to keep repeatedly moving the wire bc the sound keeps cutting out. Anyone know how I can fix this? Thanks.
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Old 11-17-2011, 07:32 AM
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Quote:
Originally Posted by jz1276 View Post
Two more ?'s about this amp. First, I'm assuming it came as a system with the tuner/cd player, etc. Does anyone know the model of the CD player it came with?

Second, I'm having some problems with the spkr. terminals. I have to keep repeatedly moving the wire bc the sound keeps cutting out. Anyone know how I can fix this? Thanks.
The speaker terminals on Technics amps are notorious for being cheap and prone to breaking, i have a couple of quite high end Technics amps that are let down by those cheap " twist-on " speaker terminals.

If the set of terminals for speaker "A" is bad try using the set for speaker "B" and see if that helps.

In the long run replacing the terminals with decent heavy Banana plugs would be the best option to avoid trouble.
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