AVR Hack for Pre- outs. Ended up being simply wondering in case it is feasible to hack an AVR without pre-outs to produce preamp sign become given to a outside amplifier.

AVR Hack for Pre- outs. Ended up being simply wondering in case it is feasible to hack an AVR without pre-outs to produce preamp sign become given to a outside amplifier.

Well-Known User

Had been simply wondering if it’s feasible to hack an AVR without pre-outs to supply preamp sign to be 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 off to an unused RCA port on the back of the AVR. But taking into consideration the cost of an AVR it is hard for most people to make use of this choice though it can be simply be achieved by FMs with some tinkering experience. The end result would be the just like having pre-outs to an otherwise AVR that is sealed.

2. Utilize an advanced level – Low degree converter: this is certainly something that can be used in automobile sound in order to connect a outside amp to a factory fitted automobile amp without pre amp outs. The converter essentially converts the wattage that is high sign to low wattage signal and that can be properly given to some other amplifier. Nonetheless i will be maybe not certain that this product designed for automobile sound are designed for a wattage that is large originating from an AVR designed for center/ FL/FR (do not mind the utilization of technical terms such as for instance wattage since I have do not participate in “that” industry)

3. Utilize a specialist converter such as Behringer DI 4000- for about INR 3,900 (for 1 channel) to about INR 9,000 (for 4 networks), this appears like a viable choice. The requirement that is only be compared to a XLR to RCA converter to feed the production into the RCA ins of a energy/ integrated amp.

Then there won’t be a need to buy expensive AVRs (except for more channels) if we can use any of the 3 methods above. We are able to merely include energy amps and run the show.

There isn’t most of product regarding the approach that is above. If any one of you’ve got tried these methods or have actually remarks on which can work please inform me.


Well-Known User

It noises interesting to incorporate pre-outs to an AVR (if it can be done).. Guess, it could need a talented person to accomplish this (or) a person who knows electronic devices well. though i’ve never tried your concept,.

All the best, and keep us published on which you determine to do..

Well-Known User

Absolutely well worth an attempt whether it’s your receiver that is spare sitting. If you don’t, easier to obtain an older marantz nr series with pre outs and commence enjoying the movies faster.


Well-Known User

Absolutely well well well worth a go if it is your receiver that is spare sitting. If you don’t, simpler to get 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 towards the front kept and front right speaker outs associated with Denon 2500H receiver. The outputs for 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 ensure that i possibly could do a little critical listening and realize distortions in noise if any.

I carefully fired up the AVR together with Rotel with both dials (volume) at Nil and played a Vinyl by way of a TT attached to the Denon AVR. First we increased the Denon volume slowly to see if there have been any heat surges anywhere (heat) after which resulted in the Rotel to about 9 o clock. I became happily surprised to be greeted by sweet music. No distortion- humming or hiss of every type. There was clearly a small surge in low end plus some glow during the upper end. I happened to be astonished because of the bass since I experienced never ever heard my bookshelves create such bass before. Nevertheless it was not overpowering or fatiguing one other frequencies. I happened to be listening to music really critically yesterday and checking conditions associated with the AVR, Rotel & most significantly the converter that is passive. The Rotel ended up being somewhat warm round the heatsinks while the Denon ended up being warm up somewhat. I became hearing 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 ended up being since cool as being a cucumber.

Impressions regarding noise in basic:

1. Small uptick in low frequencies- which included favorably to your experience. 2. silence that is complete hiss- hum 3. extremely wide soundstage- often going beyond your speaker width 4. Vocals were crystal clear- in reality in just one of the songs i possibly could feel Kumar Shanu operating away from breath 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- have no idea should this be good or bad but sounded good.

Cons: 1. AVR continues to be utilizing the amp section (cant bypass this unless the AVR is opened by me and bypass the amp) 2. The sign is certainly going through 2 preamps- the Denon plus the Rotel. This may carry on unless we link a charged energy amp.

I am going to continue steadily to try out this for an extended duration and order another one then for the center channel

9 febrero 2021
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