The "Official" Yamaha RX-V1800/RX-V3800 Thread - Page 292 - AVS | Home Theater Discussions And Reviews
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Receivers, Amps, and Processors > The "Official" Yamaha RX-V1800/RX-V3800 Thread
Bond 007's Avatar Bond 007 01:27 PM 01-30-2015
Quote:
Originally Posted by kriktsemaj99 View Post
^ You only have 7 amps in total. e.g. 7.1 in the main zone, or 5.1 + zone 2. There are no extra amps for zone 2.

At any given volume level you are not "running extra power" to the speakers by bi-amping. And since the AVR is simply doing passive bi-amping (sending the full signal to both sets of inputs on the speakers) it's hard to see how it could make a "noticable" difference. You would have to do a blind test with careful volume matching (using an SPL meter) before concluding you can really hear a difference.
+1
Biamping with an AVR to get better sound is myth, marketing and a waste of time.

Joel Nazario 09:18 AM 02-10-2015
My Rx-v1800 is sounding weak, I didn't touch anything, it was calibrated at 75db with the volume at 0db and what I'm getting is around 62db @ 0db volume. Try got do the room correction but when it get to the left channel it make a really loud sound (like a feedback sound). Reset everything, change outlet and still weak sound.
toby10's Avatar toby10 01:51 AM 02-12-2015
Tried isolating the left channel? Swap speakers? Swap speaker wire?
Mastiff's Avatar Mastiff 07:22 AM 02-15-2015
kriktsemaj99, I have an unexpected problem: I moved the serial stuff from where it was (at a separate computer with a regular serial port) to where it is supposed to be (a VM that connects to an USB to serial over USB over TCPIP), but it just doesn't work. It's a Prolific PL2303H, and it shows up as working in Device Manager. I have also tried to connect the USB to serial device directly to the host computer and testing the receiver manager there (so not on the VM), but that doesn't work either. Is there a limitied number of USB to serial devices that work with Yamaha? I'm using the same cable that works perfectly with the physical comport on the extra computer (which I really don't have room to keep there just for this one function), so I know it's not the cable.

Edit: Connecting to the receiver with Hyperterminal seems to work in as much as it says "Connected", but trying to send the string 11 30 30 30 03 (READY, I think...) doesn't give me an answer. Nor does any other string I can send, there's just nothing happening. Or maybe it's not working even that much. Seems like connecting to any serial port without anything on it will give the same result.
wyattroa's Avatar wyattroa 09:06 AM 02-15-2015
Quick question, I have noticed when watching on my system the trueHD is considerably quieter then Master HD. I have Yamaha rx v1800, but I wouldn't think that would make a difference. Anyone else get the same thing?
Robert
kriktsemaj99's Avatar kriktsemaj99 07:26 AM 02-16-2015
Quote:
Originally Posted by Mastiff View Post
kriktsemaj99, I have an unexpected problem: I moved the serial stuff from where it was (at a separate computer with a regular serial port) to where it is supposed to be (a VM that connects to an USB to serial over USB over TCPIP), but it just doesn't work. It's a Prolific PL2303H, and it shows up as working in Device Manager. I have also tried to connect the USB to serial device directly to the host computer and testing the receiver manager there (so not on the VM), but that doesn't work either. Is there a limitied number of USB to serial devices that work with Yamaha? I'm using the same cable that works perfectly with the physical comport on the extra computer (which I really don't have room to keep there just for this one function), so I know it's not the cable.

Edit: Connecting to the receiver with Hyperterminal seems to work in as much as it says "Connected", but trying to send the string 11 30 30 30 03 (READY, I think...) doesn't give me an answer. Nor does any other string I can send, there's just nothing happening. Or maybe it's not working even that much. Seems like connecting to any serial port without anything on it will give the same result.

I've controlled my 1800 from a computer with a real serial port, and also through a USB to serial converter. But that doesn't necessarily mean all USB to serial converters will work.

Make sure the baud rate is correct (9600) and also that hardware flow control (RTS/CTS) is enabled and supported by the USB to serial converter.
Also, you cannot simply type commands in Hyperterminal for the 1800 because some of the characters are not printing characters. e.g. the Ready command starts with a single byte with Ascii code 0x11, you can't just type the two characters 11 in Hyperterminal.

The best way to do manual tests is to put the correct command in a file with a binary editor, then copy the file to the correct COM port (or use "Send File" in Hyperterminal). The Ready command should be exactly 5 bytes in total, so make sure your file is this size.
Mastiff's Avatar Mastiff 07:47 AM 02-16-2015
Thanks! And damn, thought I had it there. I had the flow control to off, but going to hardware didn't help, and I know the adapter supports it. And besides the "physical" onboard com port on the computer that works with the Yamaha is doing that without any flow control. So I guess I'll have to try another serial adapter and check if that works. I have ordered one from eBay, I may be lucky. I have a routine in Girder that works on the other computer as well, but here it fails. So I guess I'll have to see if another one works.
kriktsemaj99's Avatar kriktsemaj99 08:25 AM 02-16-2015
^ Are you sure you're sending the correct string? For example how exactly were you trying to send the Ready command from Hyperterminal (typing it from the keyboard, sending from a file, etc.)?
Mastiff's Avatar Mastiff 08:31 AM 02-16-2015
Oh, I'm not talking about hyperterminal now, I figureed that if Yamaha's own software couldn't even connect it would't work. So I'm using the Reciever Manager for this, and Girder. Both work perfectly with the same cable and a real searial port on that other computer, but not at all with the USB adapter.
ssthrd's Avatar ssthrd 09:02 PM 02-17-2015
Yamaha HTR 6190 (RXV 1800) SPL issue I posted in the general forum but probably should have done it here first.


I have a sound level issue that I recently noticed, and I thought that maybe one of you would have an idea about what the problem is and maybe how to fix it.


When playing music at higher listening levels around -10, my Yamaha HTR 6190 will drop the sound level 3-5 dB after about 3 seconds or so. It's a thing that I have never noticed before, and I wonder if any of you has heard anything about it. I have searched this forum and my user manual but can find no fix for it.


I have my max volume set at 0dB, and played with that a bit, but it made no difference what it was set at, it still dropped 3dB or so as measured by an app on my iPhone 5s. It is definitely noticeable while listening.


Any ideas?
Mastiff's Avatar Mastiff 09:50 AM 02-19-2015
Well, I tested a few USB to serial devices, and the winner is...this!



The cheapest cr@p found on the net! It's based on a CH-340 chip, and it works perfectly! Of course the drivers that came with it didn't work with Windows 7 64 bits, so I had to hunt a little bit. But I found the correct driver that's digitally signed and working. Unfortunately it's too big to attach here, but I am going to save it so if somebody need it they can PM me. Just in case they under somewhat bizzare circumstances should need to control their Yamaha through an USB to serial setup!
kriktsemaj99's Avatar kriktsemaj99 12:41 PM 02-19-2015
Quote:
Originally Posted by Mastiff View Post
Well, I tested a few USB to serial devices, and the winner is...

Strange that they don't all work with the Yamaha, but glad you found one that does.

I'm still using my 6190, network controlled via a network to serial converter. I suppose that could be an alternative solution for you... send commands over TCP/IP to a small box that has the serial connection to the receiver. Feedback is returned over the network too.
Mastiff's Avatar Mastiff 05:35 AM Today
Yeah, it's an option, but since I have these TP-Link USB/printer servers in the right place it's just as well to use those. I have ordered four of those things so I can do serial control of a few other things, nice to have!
Tags: Yamaha Rx V1800 Receiver , Yamaha Rx V3800bl Receiver
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