Well-Known User
Ended up being simply wondering when it is feasible to hack an AVR without pre-outs to present preamp sign become given to a outside amplifier. After some R& D came over the following 2-3 choices to take action:
1. Surgery- open the AVR , discover the path that is signal preamp and amplifier board and solder a cable through the preamp FL, FR and ground down to an unused RCA port on the back of the AVR. But taking into consideration the cost of an AVR it is hard for many people to utilize this choice even though it can be simply be done by FMs with some experience that is tinkering. The effect would be the identical to having pre-outs to an otherwise AVR that is sealed.
2. Utilize a higher level – Low amount converter: this is certainly something that can be used in vehicle audio to get in touch a outside amp to a factory fitted vehicle amp without pre amp outs. The converter fundamentally converts the wattage that is high sign to low wattage signal and that can be properly given to some other amplifier. Nevertheless I’m not certain that this product designed for automobile sound are designed for a big wattage sign originating from an AVR intended for center/ FL/FR (don’t mind the utilization of technical terms such as for instance wattage since I have do not are part of “that” industry)
3. Make use of an expert converter such as Behringer DI 4000- for about INR 3,900 (for 1 channel) to about INR 9,000 (for 4 stations), this appears like a viable option. The only requirement will be compared to a XLR to RCA converter to feed the output towards the RCA ins of a energy/ integrated amp.
Whenever we may use some of the 3 methods above then there defintely won’t be a need to purchase costly AVRs (with the exception of more stations). We are able to just include power amps and run the show.
There isn’t a lot of product regarding the above approach. If some of you’ve got tried these methods or have actually commentary about what might work please let me know.
elangoas
Well-Known User
It noises interesting to include pre-outs to an AVR (if that can be done).. Guess, it might need an experienced individual to achieve that (or) somebody who knows electronic devices well. though we have never tried your concept,.
All the best, and keep us published on which you choose to do..
Well-Known User
Surely well well well worth a go whether or not it’s your extra receiver sitting idle. If you don’t, easier to obtain an older marantz nr series with pre outs and commence enjoying the movies faster.
Amarendra
Well-Known User
Undoubtedly well 
well worth an attempt whether or not it’s your receiver that is spare sitting. If you don’t, safer to obtain an older marantz nr series with pre outs and commence experiencing the movies faster.
The passive high to low voltage converter arrived yesterday. It was connected by me to your front kept and front right speaker outs regarding the Denon 2500H receiver. The outputs associated with the converter had been attached to the RCA ins (CD) for the Rotel RA 10 amplifier. The leading Left and Front Right Speakers were attached to the Rotel’s FL and FR terminals. We disconnected other speakers from the AVR to make certain that i really could do some listening that is critical comprehend distortions in noise if any.
We carefully fired up the AVR together with Rotel with both dials (volume) at Nil and played a Vinyl through a TT attached to the Denon AVR. First we increased the Denon amount slowly to see if there have been any temperature surges anywhere (heat) after which resulted in the Rotel to about 9 o clock. I happened to be amazed to be greeted by sweet music. No distortion- humming or hiss of any type. There is a small surge in low end plus some glow during the high end. I happened to be astonished because of the bass since We had never ever heard my bookshelves create such bass before. Nonetheless it was not overpowering or fatiguing one other frequencies. I happened to be hearing music very critically yesterday and checking conditions associated with the AVR, Rotel and a lot of notably the converter that is passive. The Rotel ended up being somewhat hot across the heatsinks and also the Denon ended up being starting to warm up somewhat. I became playing music for nearly 2 hours from Jagjit Singh to Bob Dylan to Bollywood songs streamed from Amazon music yesterday.
The Rotel remained warm not hot after 2 hrs. The AVR had been warmer but i suppose this is because of continuous 2 hrs usage and the converter had been as cool as being a cucumber.
Impressions sound that is regarding basic:
1. Small uptick in low frequencies- which added favorably towards the experience. 2. silence that is complete hiss- hum 3. extremely wide soundstage- often going outside of the speaker width 4. Vocals were crystal clear- in fact in certainly one of the songs i really could feel Kumar Shanu operating away from breathing in the bottom end 5. Vocals seemed elevated through the remaining portion of the sound field and I suggest literally- focused but somewhat gaining in height- do not know should this be good or bad but sounded good.
Cons: 1. AVR continues to be using the amp section (cant bypass this unless the AVR is opened by me and bypass the amp) 2. The signal is certainly going through 2 preamps- the Denon along with the Rotel. This can carry on unless we link a charged power amp.
I am going to continue steadily to try this for a lengthier duration and order another one then for the center channel