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Old 13th August 2006, 04:10 AM   #1
Stuey is offline Stuey  Australia
diyAudio Member
 
Join Date: Mar 2006
Location: Perth, Western Australia
Default Remote volume - existing remote

Hi there,

I'm preparing to start building a Gainclone style amp, and am considering the options for volume conrtol. As this stage I intend to use an Alpha pot until I gain experience. I will rig up a stepper motor to an extended shaft, with the pot mounted remotly from the front panel.

My question is about remote volume control. I've seen plenty of kits around - that's not the issue. However, I wanted to control the remote volume through my existing Marantz remote (which has volume buttons for the electronic volume of the CD player headphone out). That is, I was hoping to use the single remote to control the CD and the volume of the amp.

Can existing kits be adapted to be controlled by proprietary remotes?

Cheers

Stuey
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Old 13th August 2006, 01:00 PM   #2
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Join Date: Jul 2006
Default Remote

I just recieved an email from someone willing to help me design a kit from www.chipamp.com (my first build) adding the LM1036 from www.national.com control, plus adding a remote control.

It's hard to get out of the recliner
all the time, We are a remote society.


I was informed the remote setup depends on what you want to control with the remote. I am just a student. I want more than a volume control, the new chips have THD+n about as good as it gets.

I hope this helps. Here is the response I recieved:

" I will provide more information later. I think it would be no problem to
> provide a very simple remote controlled volume control with two microchip
> controllers (one for the transmitter and one for the receiver). But first
> you need to know what volume control chip you intend to use as this
> affects the program. It's even possible to use a binary logarithmic
> stepped volume control with precesion resistors and small relays, with a
> remote control. The microchip controller then needs to output parallell
> data for the relays.
>
> Balance control can be done digitally, by sending each volume control chip
> or relay array a different code. Problem here is to keep volume setting
> valid, so one channel volume has to increment, the other channel has to
> decrement simultaneously. For correct multichannel volume control
> front/rear and left/right, complicated attenuation schemes are necessary
> involving floating point calculations
>
> I personally like the LM1971, it has the best sound quality so far. I
> tried a lot of configurations and volume control chips.
>
> In a High-end preamplifier you don't want to use tone control, only volume
> control with as low distortion and noise as possible. The LM1036
> distortion is way too high (0.03%) the LM1971 has 0.0008%."
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Old 13th August 2006, 03:15 PM   #3
Stuey is offline Stuey  Australia
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Join Date: Mar 2006
Location: Perth, Western Australia
Thanks, but I don't think you quite understood the question.

I'm definitely going to use a mechanical rotary pot, most probably with a kit based PCB for the receiver. I wanted to adapt one to accept commands from a particular proprietary remote. I'm assuming that they transmit on a particular frequency in the infra-red spectrum.

What I wanted to know is how (if it's possible) you can adapt such a remote control kit, rather than using a universal remote controller.

I most certainly only want volume control - source changes etc. are so infrequent it's not an issue.

Cheers

Stuey
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Old 13th August 2006, 05:20 PM   #4
xaudiox is offline xaudiox  Philippines
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Quote:
Originally posted by Stuey
Thanks, but I don't think you quite understood the question.

I'm definitely going to use a mechanical rotary pot, most probably with a kit based PCB for the receiver. I wanted to adapt one to accept commands from a particular proprietary remote. I'm assuming that they transmit on a particular frequency in the infra-red spectrum.

What I wanted to know is how (if it's possible) you can adapt such a remote control kit, rather than using a universal remote controller.

I most certainly only want volume control - source changes etc. are so infrequent it's not an issue.

Cheers

Stuey
i dont think thats possible unless the kit and your remote uses the same Protocol. most of the kits that i have seen uses sony or philips
remote control.

i myself had done a similar project but i used sony remote..
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Old 13th August 2006, 07:16 PM   #5
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Join Date: Apr 2006
Location: buenos aires
i'm trying to do the same thing, but with a kenwood remoto (bad choice!!).
using a marantz remote won't be difficult i believe, for it uses RC5 (philips) protocol and most kits are configured for it.
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Old 19th August 2006, 03:09 AM   #6
Stuey is offline Stuey  Australia
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Join Date: Mar 2006
Location: Perth, Western Australia
Thanks; I'll look around at RC5 protocal and see what I can come up with.

Stuey
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Old 19th August 2006, 11:38 AM   #7
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Join Date: Jul 2006
Default Have a look at this link.

Aremote control link, perhaps they can help.

http://sound.westhost.com/project110.htm
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Old 19th August 2006, 11:40 AM   #8
diyAudio Member
 
Join Date: Jul 2006
Default Re: Remote

I goofed that reply was from ec-designs@hccnet.nl email.


Quote:
Originally posted by ppcblaster
I just recieved an email from someone willing to help me design a kit from www.chipamp.com (my first build) adding the LM1036 from www.national.com control, plus adding a remote control.

It's hard to get out of the recliner
all the time, We are a remote society.


I was informed the remote setup depends on what you want to control with the remote. I am just a student. I want more than a volume control, the new chips have THD+n about as good as it gets.

I hope this helps. Here is the response I recieved:

" I will provide more information later. I think it would be no problem to
> provide a very simple remote controlled volume control with two microchip
> controllers (one for the transmitter and one for the receiver). But first
> you need to know what volume control chip you intend to use as this
> affects the program. It's even possible to use a binary logarithmic
> stepped volume control with precesion resistors and small relays, with a
> remote control. The microchip controller then needs to output parallell
> data for the relays.
>
> Balance control can be done digitally, by sending each volume control chip
> or relay array a different code. Problem here is to keep volume setting
> valid, so one channel volume has to increment, the other channel has to
> decrement simultaneously. For correct multichannel volume control
> front/rear and left/right, complicated attenuation schemes are necessary
> involving floating point calculations
>
> I personally like the LM1971, it has the best sound quality so far. I
> tried a lot of configurations and volume control chips.
>
> In a High-end preamplifier you don't want to use tone control, only volume
> control with as low distortion and noise as possible. The LM1036
> distortion is way too high (0.03%) the LM1971 has 0.0008%."
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Old 19th August 2006, 04:01 PM   #9
Nortp is offline Nortp  United States
diyAudio Member
 
Join Date: Apr 2006
Location: Phila. Pa.
I just hooked up a remote controlled pot that Brian from twisted Pear audio made up to my twisted pear chip amp. It uses a Sony protocol for a TV, I just programmed my existing remote to work with it. It is a MAJOR convenience. And highly recommended.

PJN
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Old 19th August 2006, 07:21 PM   #10
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Join Date: Jul 2006
Default Remote control

I get confused, Brian that I have communicated with is from

www.chipamp.com

Twisted Pair. has nice stuff. rev C amp

Could you share the infirmation please? What all does the

remote do? Volume, on-off, balance?

Iam looking for a way to connect LM1036 with a remote control

to operate vol, balance, bass, treb, on-off to LM3886 amp.
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