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Thread: NAD A/V receiver hiss issue |
    
Bronze Member Username: Frank_abela
Berkshire
UK
Post Number: 40
Registered: Sep-04
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| Posted on Friday, September 10, 2004 - 07:19 am: |
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Sorry Alex, didn't get the chance. However, the fact that the power amps on their own are silent simply means that what I'd hear with another preamp attached is that preamp's noise.
Toroidal transformers have a higher magnetic field as far as I know, but I could be wrong about that. Toroids are also notorious for generating hum. Naim equipment for example can suffer from hum quite a bit, especially when you have dirty mains when the toroids literally sing in unison with the noise on the mains. Toroids are usually dipped in wax which dampens this effect, but even with the quality transformers in Naim amps (Naim charge £900 for their middle of the road power supply!) you still get hum occasionally.
C-Core or frame transformers also suffer from hum, but this tends to be a constant hum as opposed to a hum dependant on the mains quality. Most tube amps use large frame transformers and this is why they tend to hum more than most transistor amps.
The hiss noise in preamps is nothing really to do with the transformers. Transformers create hum. Hiss is just as much down to poor regulation as it is the use of low quality materials and components.
Finally don't forget that through the speakers, my amps did not hiss very much at all, indicating that the basic design of the preamps is fairly quiet (at least on my samples!). The headphone sockets did hiss quite a bit and the same on each amp, indicating to me that the same circuit is used. I suspect both models have a very basic headphone circuit with little to no regulation. It's an afterthought I think and you're particularly unlucky since you do a lot of headphone listening.
Regards,
Frank.
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Bronze Member Username: Alexfromholland
Post Number: 22
Registered: Aug-04
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| Posted on Friday, September 10, 2004 - 07:52 am: |
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Frank,
You mentioned that the amps didn't hiss at all through your speakers. What speakers are you using ? And what is their sensitivity ?
Again, through my Celestion F30 the NAD T743 hissing is very well heard up to 5 meters distance!
BTW, I am keeping my NAD T743, which I think is a great piece of equipment, despite the hissing.
Bottom line it is the quality of the sound that counts, not the quality of the silence ;p |
Bronze Member Username: Frank_abela
Berkshire
UK
Post Number: 41
Registered: Sep-04
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| Posted on Friday, September 10, 2004 - 08:51 am: |
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Alex
Focal Jmlab Chorus 726S's which are 91db/w/m with 8 ohm impedance, so a touch more sensitive than the Celestions. I had the volume set to -10db. At 3m I couldn't hear hiss. In fact I could hear a little hiss from 1 metre. No I am not deaf. 
I really don't know what to suggest, especially since it's been back to NAD. Of the ones you tried I'd have gone with the NAD on the basis of sound quality. I guess the only other solution is to ask the dealer to take it back and offer you something else. Then listen to it at home before you buy to make sure you'll be happy with it.
Regards,
Frank. |
New member Username: Meursault
Post Number: 9
Registered: May-04
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| Posted on Friday, September 10, 2004 - 06:28 pm: |
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I have a quick (slightly off-topic) question. Is NAD pronounced "N-A-D," as in "en, ay, dee" or "nad", rhymes with "bad"? I know it used to be an acronym, but that was a long time ago. I don't have a dealer around here and I'm trying to not sound like a loser on the phone. |
Bronze Member Username: Agimat
Canada
Post Number: 17
Registered: Aug-04
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| Posted on Friday, September 10, 2004 - 09:35 pm: |
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GUys I'm back.I checked everything last night until I saw these jumpers. I removed them and the result no hiss, at last I heard the NAD without hiss for the first time =). Because of too much excitement I went up to my room and used the pc and post what happened and forgot to put back those jumpers.I woke up so early the next day and was so eager to hear the nad but there was no sound. I checked again everything till I saw these jumpers on the carpet and when I put them back the sound came back and so the hiss. I realized that these connect the preamp to the final amp so removing them the signal does not reach the amp and now I know =(.Anyways I'll update everyone when the sales rep returns on Monday. I'm in Toronto and NAD is only about 20-30 kms away from my place. Sorry for my grammar,just migrated here in Canada and still learning the english language. Till then. |
Silver Member Username: Landroval
Post Number: 642
Registered: Feb-04
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| Posted on Saturday, September 11, 2004 - 05:06 am: |
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larz, any news for upgrades for current hissing NADs? |
Bronze Member Username: Agimat
Canada
Post Number: 20
Registered: Aug-04
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| Posted on Saturday, September 11, 2004 - 05:40 pm: |
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Probably and hopefully we can get an answer early next week. The sales rep is out of town and my dealer should talk to him first before going to the technical department.I'll keep you posted. |
Daniel Benatar Unregistered guest |
| Posted on Saturday, September 11, 2004 - 08:42 pm: |
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Hi all,
I have being followed this notes closely and today I went and audit several receiver: Rotel 1058, NAD T773, Denon 3805 and 5803, Yamaha RXV2400, Korell (amplifier and preamp) and Sunfire. For all of them, I have played the Dire Straits CD and especially the “Privet Investigation”. All these receivers I have checked with B&W and KEF speakers. Then, I have asked the dealer to disconnect the DVD input and increased the volume to maximum. And finally, during the play CD, I have paused the DVD as well. With these evaluations – One: playing CD, 2nd: Paused the DVD, and 3rd: with out any input and with max volume, I wanted to check the hiss level if at all.
I have found that all these receivers with KEF have hiss noise audioable from 2-3 meter from the front speakers. I have found that Sunfire and Yamaha receivers were the highest noise audioable from 2 meter and then all the rest of the receivers were at the same level of hiss noise.
I also found that with the B&W speakers the level of the hiss noise was reduced but still was audiable from 1 meter with all the receivers – but still it was the hiss noise was there in all the receivers.
Next, when I have paused the DVD, and increased the volume to max, I have heard the hiss noise in all the receivers – and it was with the KEF and B&W speakers.
Finally, when I played the CD Dire Straits and “Privet Investigation” song I could hear hiss noise just from the tweeter – but just when I put my ear on the speaker. Acorrding to the dealer, this hiss noise is from the CD record.
I think that I concluded my conclusion: All receivers and even high end amplifier with preprocessor like Korell have level of hiss noise – and it’s not unique phenomena to one or two receivers. I have like the Korell sound a lot and after that immediately the NAD was the closet clean sound to the Korell (and it was surprising me that it was not the Sunfire). If you looking for receiver or system (pre amp. And amp.) free noise it will be very difficult to find it and having saying that – I think it will be impossible (although it is not math proof…).
Please let me know if you have any further question about my little study with this hiss issue.
Thanks, Daniel
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Silver Member Username: Johnny
Missouri
Post Number: 410
Registered: Dec-03
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| Posted on Saturday, September 11, 2004 - 11:08 pm: |
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Daniel,
Great report!!! That is all very interesting. It sounds like you had a productive day. That sounds like it was fun. You got to listen to some great receivers/amps. You must have a wonderful dealer.
By the way, that song, "Private Investigations" by Dire Straits is WONDERFUL for audtioning receivers. I have used that same song for quite awhile to audition receivers. Simply amazing sound. It sure lets you know pretty quick which receivers can "cut the mustard".
Once again, great report, I would be interested to hear more!! |
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| Posted on Sunday, September 12, 2004 - 12:41 am: |
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Daniel,
When you pause a CD or DVD it will produced noise coz you have inputs. What I want to know is just power up the receivers, no input and only the speaker are connected and turn the volume even not on the max. level.Did you try it?The T743 that starts from 00db even you turn the volume to -74db just 1 increment it produces hiss.You said its very difficult to find receivers that does not hiss, well I found some, the Marantz and HK.I brought these at home and compare with the T743 and only the NAD had hiss. One thing more, when you power on the NAD and place your ear about a few inches from the speaker you can hear the click of the relay on the speaker (should not be) while the Marantz and HK don't. |
Silver Member Username: Landroval
Post Number: 656
Registered: Feb-04
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| Posted on Sunday, September 12, 2004 - 07:02 am: |
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I agree with Anon. What I'm interested in is the level of hiss with low listening volumes. I dont care about hiss at max volumes because I never use it.
With my NAD the level of hiss is the same whether the volume is -74dB (music almost inaudible and totally covered under the hiss) or -15dB (very loud music, cant hear hiss). |
New member Username: Petarst
Post Number: 7
Registered: Aug-04
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| Posted on Sunday, September 12, 2004 - 01:10 pm: |
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Hi guys,
Maybe T773 doesn't have that problem with hiss? |
Daniel Benatar Unregistered guest |
| Posted on Sunday, September 12, 2004 - 05:09 pm: |
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Hi all again,
Well, Today I went and audited the ARCAM pre amplifier with the amplifier (FMJ AV8 Preamplifier processor) and I did the same test as I did yesterday with all other receivers (Yamaha RXV2400, Denon 3805 and 5803, Korell, Sunfire and NAD T773). The only different test from yesterday was with the speakers, since it was different dealer today, I was not able to use the KEF and or the B&W, so I used the JMLAB (it was Utopia stanfloor speakers but not sure what model one). And today, with this high end system, I was not surprised when I heard the hiss noise at max volume level with no input and while I paused the CD player – same results as yesterday and same noise level. As I wrote yesterday, it probably will be impossible to find a receiver and or pre amp. with amplifier free hiss noise. It will be there in some level.
I agree that the NAD T773 might not have this issue, and actually, based on my study, I can say that the level of the hiss noise of NAD T773 is the same as all other receivers and high end pre amp. And amplifiers that I have audited (see my note above from yesterday as well).
Now, I think that from what I am reading about the NAD T743 that there might be an issue with your receiver, thought all my study so far shows me that there is not a lot of different from design point of view between the 743 and 773 – although there are some.
The only thing I can say is if you see movie or lesion to music – do you hear that hiss noise? If yes, then something is wrong with your receiver, and if not, I will not change it if yu like the sound. As you are trying to develop new method on non standard receiver operation to evaluate the hiss noise level, and as I wrote I think it is normal for all receivers.
Finally, I think that NAD developed something amazing with the sound quality, with all my study and audition, the only two systems that sounded better then the NAD T773 were the Korell and the ARCAM AV8 (BTW – the NAD T773 sound quality is better then the ARCAM AVR300 for me – way a head especially with the ERAS mode). The sound of MARANTZ with the JMLAB speakers was missing something in my view (might be the warm and natural at the same time as the Korell, ARCAM AV8 and the NAD sounded).
Again, I do not intend to say that the NAD T743 receivers are free hiss noise, just based on my little study which covered others “high end” receivers and pre amp. with amplifiers systems, I can say for sure that I was able to say:
1. Sunfire and Yamaha had the highest noise with no input connection and or when I paused the CD player and receivers were at max volume.
2. All other receivers (see above) have some hiss level at max volume and without any connection input and or when I paused the CD player.
3. When I play the CD Privet Investigation Dire Striate, I was able to hear hiss noise (when I put my ear on the speaker) from all the receivers and pre amp and amp. Systems – and it probably came from the CD record.
And yes, you probably want to have an audition side by side and decide which receiver you like from sound quality point of view – MARANTZ vs NAD, and I will be surprise if the MARANTZ will win – just from sound quality point of view – but again it is also depend on your test as well.
Hope that I help a little bit with this data – it is just something to think about.
Good luck with your decision what ever it will be; I am sure you will be happy with it – just go for it!
Please feel free to ask any further question.
Thanks, Daniel
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New member Username: Petarst
Post Number: 8
Registered: Aug-04
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| Posted on Sunday, September 12, 2004 - 06:02 pm: |
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Hi Daniel,
I was yesterday at my dealer and i have listend denon 3805 and 320bee in stereo. All i can say abought this that nad little amp eat that Denon in Stereo! I have listend it on monitor audio S6 and on mission m53 speakers. Also on some referent songs i have noticed that Denon can't control bass completly, but in case of NAD 320bee it is different story.
I didn't listen t773 but it should be better in stereo format than Denon 3805.
i am interesting if nad receiver can compare in stereo with nad 320bee amp?
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Silver Member Username: Landroval
Post Number: 660
Registered: Feb-04
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| Posted on Sunday, September 12, 2004 - 07:21 pm: |
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Daniel, thx for your reports, although I would have liked to read about testing the hiss of different receivers with normal listening volumes. Hiss at max vol doesn't interest me one bit.
Petar, I know what you mean, the NAD sound in stereo is just great. The T743 cant keep up with the 320Bee, but the T753 should be closer and the T763 and T773 probably even better. |
Daniel Benatar Unregistered guest |
| Posted on Sunday, September 12, 2004 - 08:03 pm: |
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landroval,
Sorry if I was not clear with my two reports, with normal listening volume, I did not success to hear the noise of these receivers unless I have put my ear on the speakers. As of that I have decided to take these “experiments” to extreme: with max volume with three conditions:
1. No input connections to the receiver.
2. DVD Input connected to the receiver.
3. DVD Paused.
And this is to evaluate the hiss level of each receiver on the extreme point – to help me hear if there are different between the receivers.
And finally, playing the “Privet Investigation” as it “quite” song (if I may say so) is on normal volume – so I will be able to understand the hiss level with standard operation: CD Connected, Play, and normal volume listing mode.
All in all, as I wrote, during the normal listening to the Privet Investigation song, I was able to hear hiss noise just if I put my ear on the speaker – and it was on all the receivers and pre amp. and amplifier systems – and it is due to the CD record.
Hope that this clarify and helps you to understand that with the receivers and pre amp and amplifier systems I have tested and audited including at normal operation at listening mode – I did not find any issue with any receiver / system.
Now, If I were to buy a system with no budget limit I will choose (from what I have listening so far):
1. Krell pre amp with amplifier with B&W speakers - Nautilus 802
2. ARCAM AV8 Pre amp with amplifier with JMLAB Utopia stanfloor
3. NAD T773 with B&W speakers - Nautilus 802 (the NAD and the Rotel were in the same place – Did not heard any deferent, one can argue Rotel should be before NAD – OK too).
4. Rotel RSX 1067 With B&W 703
5. Denon 5803 With KEF
6. ARCAM AVR300 With JMLAM
7. MARANTZ With JMLAB
8. Denon 3805 with KEF
9. Yamaha RXV2400 – Did not like it at all for music…
This is just my list…
Please let me know if this clarify my experiment and the logic behind it – and hope that it makes sense to you now.
Thanks, Daniel
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Silver Member Username: Landroval
Post Number: 661
Registered: Feb-04
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| Posted on Monday, September 13, 2004 - 06:05 am: |
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Yes, thanks, I see what you did.
My setup is a little different with short distances from speakers, and usually quite low listening volumes. Right now I listen Private Investigations with my T743 with volume set at -50dB. I can easily hear a constant hiss from the speakers which really kills the beauty from the song. If I pause the music the hiss remains. I can hear the hiss from 10 feet distance.
I hope larz would have good news about the upgrades. |
Bronze Member Username: Jonmoon
Post Number: 90
Registered: Dec-03
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| Posted on Tuesday, September 14, 2004 - 04:22 pm: |
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Daniel, very nice posts. I have always suspected that the posters have been unusually hard on the NADs without holding the other receivers to the same standards. That is not to say that there isn't a proper concern about hissing.
Landroval, are you listening to CDs with a CD player or a DVD player? How is it hooked up to the receiver? Could the problem be the CD/DVD player and not the receiver? |
Silver Member Username: Landroval
Post Number: 676
Registered: Feb-04
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| Posted on Tuesday, September 14, 2004 - 04:37 pm: |
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Nope, it's the receiver. I've tried it with my universal DVD-A/V player, CD-player and computer all with both analog and digital. I've also tried all these players with my Sony receiver and there was no mentionable hiss. |
Bronze Member Username: Persvako
North Europe
Post Number: 49
Registered: Jun-04
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| Posted on Tuesday, September 14, 2004 - 05:02 pm: |
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Why don't you believe us, Jonathan? With no devices attached there is the hiss. Always, every second.
Some NAD's have this really annoying issue. Easiest this is to hear with headphones, no need for speakers. It is easy, just plug it in and listen. I'd like Daniel to try 743 and 753 also, these are those with most of complains. 773 is too expensive, so almost nobody will buy it. Try as little volume as possible, that is the best way to review which unit has the greatest hiss. After that, increase the volume little by little and hear if the hiss is increasing also... |
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| Posted on Tuesday, September 14, 2004 - 05:14 pm: |
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Meursault
NAD is acronym for New Acoustic..... Dimension or Distortion? |
Daniel Benatar Unregistered guest |
| Posted on Tuesday, September 14, 2004 - 10:33 pm: |
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Hi all,
It seems to me that you have a problem with the NAD T743 receiver. I have provided you some tool to compare the receiver performance, and I think that now with this you have an oppertunity to do so. I admit that I didn't compare the mid range receivers like NAD T743, ARCAM AVR200, and so on. The only thing that I can say - and this is without data it is just based on my comparision (see above), that the NAD T753 probably will be the best one from sound point of view - as I have heard the NAD T773 and from sound point of view it was the best receiver after the preamp. and amp Krell and ARCAM AV8 systems.
I will be glad to see if you can do the same test I did for the mid range receivers and what are the results.
Good luck, Daniel |
Bronze Member Username: Jonmoon
Post Number: 91
Registered: Dec-03
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| Posted on Wednesday, September 15, 2004 - 01:24 am: |
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Persvako, I didn't say I don't believe you. I said that I felt that some were more critical of the NAD than of other receivers. I had trouble with the first NAD I bought and I have always advised anyone buying a NAD to buy from a trustworthy dealer to deal with the issues. I thought Daniel showed that other receivers have similar hiss than the NAD. My point would be simply that others may not be as critical of other receivers. Additionally, a hiss that is audible from the listening position would be a defect that would make me return the unit. Earlier I pointed out, in response to your statement that the hiss was a problem with all 7x3 units, that I don't believe that is correct nor do I have a similar problem with my 763. But I am not saying that your experience is incorrect and certainly not Landrovals experience. I am sorry you are having these problems. It is also too bad because otherwise the NAD units are pretty fine receivers. |
New member Username: Ray
Post Number: 5
Registered: Dec-03
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| Posted on Wednesday, September 15, 2004 - 01:34 am: |
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I have just send a mail to NAD saying this.. Let's see if they reply back.
Hi,
I am planning to buy a NAD T743 receiver along with NAD c521BEE Cd player. However I was doing some research and I found that there are lot of complaints for the new T7x3 line of receivers regarding the "hiss" issue. There are a lot of discussion in a forum http://forum.ecoustics.com/bbs/messages/1/92714.html regarding this as well. My question to you is that:
1. How did you guys miss this issue?
2. Are you doing anything to solve this problem?
3. Have you instructed the dealers to help consumers/customers to resolve this problem?
I will look forward to hearing from you.
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Bronze Member Username: Alexfromholland
Post Number: 25
Registered: Aug-04
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| Posted on Wednesday, September 15, 2004 - 09:21 am: |
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Thank you Ray!!
I hope that you get some feedback from NAD (but i doubt it). Perhaps they put a warning sticker on the T7X3's in the future. Something like: "Do not use with sensitive speakers and do not use this device with headphones."
Alex |
Bronze Member Username: Frank_abela
Berkshire
UK
Post Number: 50
Registered: Sep-04
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| Posted on Wednesday, September 15, 2004 - 10:36 am: |
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Alex
But that would be true of ANY amp (whether it's a receiver or not).
Regards,
Frank. |
Bronze Member Username: Gatt767
Malta
Post Number: 73
Registered: Feb-04
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| Posted on Wednesday, September 15, 2004 - 04:07 pm: |
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Frank whats the prob with your email address? Ive been trying to send you an E.mail but it is returning back as not able to deliver. |
Bronze Member Username: Frank_abela
Berkshire
UK
Post Number: 54
Registered: Sep-04
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| Posted on Thursday, September 16, 2004 - 11:02 am: |
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Robert
No idea - it seems to be working now!
Regards,
Frank. |
Silver Member Username: Landroval
Post Number: 715
Registered: Feb-04
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| Posted on Thursday, September 23, 2004 - 02:52 am: |
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Any news from larz or Ray? Updates, fixes? |
Bronze Member Username: Agimat
Post Number: 24
Registered: Aug-04
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| Posted on Thursday, September 23, 2004 - 09:51 am: |
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I returned my T743 and refunded my money. I don't know if NAD is telling the truth or just playing around. Last time they said it was a software problem and after a week they gave a new one. I tried it at home and was still the same. The dealer tested all their receivers and he agreed that NAD is different.Denon and Pioneer had hiss only at max volume while the Marantz was totally quite even at max volume. The NAD started to hiss at -74db.The sales rep told me that he is going to escalate it to the engineering dept. and will give an update asap.Its almost seven days and until now I haven't get any news from NAD.The dealer told me that the new line of Marantz will be out soon and maybe I can give it a try. The SR 5500 a 7.1 + room equalizer same price as the T743, why not! at least I'll have a piece of mind. Good luck Guys |
Bronze Member Username: Ilari72
Post Number: 20
Registered: Apr-04
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| Posted on Thursday, September 23, 2004 - 10:10 am: |
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I contacted NAD again, cause my dealer has not replied my last e-mails??
But NAD aswered me
They said me AGAIN that theres a modification available and contact your dealer for assistance.
I will call my dealer. Lets see what happens.
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Silver Member Username: Landroval
Post Number: 717
Registered: Feb-04
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| Posted on Thursday, September 23, 2004 - 10:35 am: |
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Ilari, is your dealer audiocenter.ee? Because they have not replied to me either and it would be nice to get this problem solved. |
Bronze Member Username: Ilari72
Post Number: 21
Registered: Apr-04
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| Posted on Thursday, September 23, 2004 - 10:53 am: |
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Yes, i bought my unit also from audiocenter.ee |
Bronze Member Username: Persvako
North Europe
Post Number: 50
Registered: Jun-04
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| Posted on Thursday, September 23, 2004 - 01:53 pm: |
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I have to join this audiocenter club! I think Janus isn't really excited about the hiss issue... |
amonar10 Unregistered guest |
| Posted on Friday, September 24, 2004 - 03:05 am: |
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Hi
I have told you about several problems encountered with my NAD 753. Well..I have replaced the unit and there was significant improvements - it sounds great. And the hiss? Gone. |
Bronze Member Username: Persvako
North Europe
Post Number: 51
Registered: Jun-04
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| Posted on Friday, September 24, 2004 - 07:59 am: |
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What do you mean, replaced? |
amonar10 Unregistered guest |
| Posted on Friday, September 24, 2004 - 03:55 pm: |
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I have replaced my T753 WITH another T 753. The one I had before had some serious problems (i.e. switchingh input sources for no apparent reason, switching off, problems with bass management and prominent non volume dependent hiss).
My new T 753 sounds cleaner and the hiss is the same as for other recievers that I heard (harman kardon avr 430, yamaha rx v740 etc). No sign of any other problem.
...and the sound is great. Both in STEREO and EARS (truly amazing, and the only gadget sound format that I find acceptable for music reproduction). |
New member Username: Kingfish
Post Number: 1
Registered: Sep-04
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| Posted on Saturday, September 25, 2004 - 04:02 am: |
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I'm trying a Nad T773 with version 1.26 firmware. I have no hiss or humm. The Nad rep was in the local store this week and he told me version 2 firmware was just being released in production this week. How is it possible that some of you already have it? I just ordered the unit this week and am not having it shipped until it has the new firmware.
Also I was told it will have a new type of Dolby Pro-Logic among other major updates. I don't have a list unfortunatly. |
Silver Member Username: Landroval
Post Number: 726
Registered: Feb-04
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| Posted on Saturday, September 25, 2004 - 06:03 am: |
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The V2 software and updated chips have been available for at least a month. Maybe they still have some old models left which they want to get rid of, though the old models can be updated to new ones. |
New member Username: Ztkavc
Post Number: 7
Registered: Apr-04
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| Posted on Wednesday, September 29, 2004 - 05:31 pm: |
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Hi!
Amonar10 what is your software version of your new T753?
My T753 is one of the first models. There is still audible hiss and hum. The annoying buzzing sound from center speaker was repaired at the service. At that time (6 month ago) they didn't have any solutions for hiss and hum issues. They said that it is normal for NAD receivers.
Is there any news on resolving above problems.
Regards,
Zoran
P.S.
I still own my NAD because of the sound, but I don't know for how long... |
amonar10 Unregistered guest |
| Posted on Wednesday, September 29, 2004 - 08:22 pm: |
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My version is 1.27. There is VERY slight hiss compared to the former unit that I had, but I'm not bothered by it.
The sound is great.
What is the version no of your unit? |
Bronze Member Username: Bien
Post Number: 26
Registered: Apr-04
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| Posted on Wednesday, September 29, 2004 - 11:10 pm: |
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Which buttons do I need to press to display the software verion?
Tone defeat and ....? |
amonar10 Unregistered guest |
| Posted on Wednesday, September 29, 2004 - 11:32 pm: |
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video 6 |
Silver Member Username: Landroval
Post Number: 757
Registered: Feb-04
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| Posted on Thursday, September 30, 2004 - 12:13 am: |
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How about with the T743? Tone defeat and video 6 lights up the whole display, but does not show anything about the software version.
On a Finnish forum a guy got an upgraded T753v2 for audition and it also had similar hiss than all the others. I wonder what the engineers at NAD have been doing. |
Bronze Member Username: Ilari72
Post Number: 22
Registered: Apr-04
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| Posted on Thursday, September 30, 2004 - 08:11 am: |
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Landroval,
T743: You can see firmware version by pressing 'video6' and 'tone control' at the same time.
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Silver Member Username: Landroval
Post Number: 758
Registered: Feb-04
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| Posted on Thursday, September 30, 2004 - 11:04 am: |
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Ok, thanks, mine is v1.27. |
Bronze Member Username: Bien
Post Number: 27
Registered: Apr-04
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| Posted on Thursday, September 30, 2004 - 01:17 pm: |
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Will pressing tone control and video show the software version on the 763?
I pressed tone defeat and video, and it just reset the reviever.
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Bronze Member Username: Bien
Post Number: 28
Registered: Apr-04
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| Posted on Thursday, September 30, 2004 - 01:19 pm: |
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Also, I wanted to let you guys know that when I had the T753, there was a noticible hiss from the speaker no matter which speaker mode and surround mode is set, but with the T763, I only noticed the hiss in stereo mode at -10 and higher. There was no noticible hiss in any other surround mode.
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Bronze Member Username: Ilari72
Post Number: 23
Registered: Apr-04
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| Posted on Thursday, September 30, 2004 - 01:38 pm: |
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Mine is also v1.27.
Does anyone have NAD T743 v2.0?
Does it hiss with headphones?
Does it hiss with speakers? |
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