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Pioneer a858 amp no sound from phono stage, I bought it from ebay and dont know whether someones connected a line level component to it such as a cd player. and if they had would it kill the phono stage dead. all the other inputs are working fine

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  • Big John H Nov 10, 2008

    Thanks Problem fixed :)
    John H


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Hi Big John

This is a nice reference series amp with a decent phono preamp stage. It is unusual to see a phono stage get damaged in this way.... but Murphy's law tells us "If it can be blown up, then someone will do it". I recommend that you do fix it. First up, perhaps check the settings for the preamp on the rear of the amp(from recollection). Be sure that you have it in moving magnet (mm) mode if you are using a MM cartridge.

Although its been a few years, My recollection is that there is a separate power supply for the phono preamp, with maybe even power regulators on on the actual preamp board. First check would be here to see if both DC rails are present for the phono Preamp stages. Most common failure here is heat stressed cracked/dry solder joints.

You need a good HiFi/Audio tech to have a look at it for you if the problems run deeper than DC supply for the preamp. Good luck. A FixYa rating is a great reward for my time to address your problem. Cheers

regards
robotek

Posted on Nov 07, 2008

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2 Answers

How can I connect an analog turntable to my Pioneer VSX-D710S? Also, do I need a turntable with a built in pre-amp?


According to the specs there aren't any phono inputs which would have their own preamp. Everything else is line level so I'm pretty sure you'll need a preamp either between the turntable and one of the line level inputs or built into the turntable.

Mar 21, 2014 | Pioneer VSX-D710S Receiver

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No sound output from turntable on sx-780 receiver


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Dec 18, 2012 | Pioneer Sx 780 Stereo Receiver

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I connected a JVC component turntable to the CD input then tried the Aux input on a Yamaha RXV663 HD tuner and the audio volume in this 7.1 system was almost non existent. There was barely any base coming...


Yeah, phono a preamp.

"PHONO" is the only designated connection on an audio device that is literal and exclusive. Nothing but PHONO will work right on it and old-school turntables would require it to preamplify the tiny current produced by a Phono cartridge.

If your unit doesn't have a PHONO connection AND your TT doesn't have a self-contained preamp you will have to get a Phono Preamp to connect between the TT and any Line Level input, like Aux.

eBay always has some...
http://shop.ebay.com/?_from=R40&_trksid=p3984.m570.l1311&_nkw=phono+preamp&_sacat=See-All-Categories

Jul 25, 2011 | Audio & Video Receivers

1 Answer

HELLO,RECENTLY BOUGHT A ROTEL 1500 TURNTABLE BUT WHEN PLUGGED IN TO MY AMP I NEED TO TURN VOLUME TO FULL TO GET ANY SOUND.Only thing i can think of is that the wiring is fualty is it easy enough to rewire?...


"PHONO" is the only designated connection on an audio device that is literal and exclusive. Nothing but PHONO will work right on it and old-school turntables would require it to preamplify the tiny current produced by a Phono cartridge.

If your unidentified amp doesn't have a PHONO connection AND your TT doesn't have a self-contained preamp you will have to get a Phono Preamp to connect between the TT and any Line Level input, like Aux.

eBay always has some...
http://shop.ebay.com/?_from=R40&_trksid=p3984.m570.l1311&_nkw=phono+preamp&_sacat=See-All-Categories
http://shop.ebay.com/i.html?_from=R40&_trksid=p3984.m570.l1313&_nkw=phono+preamp&_sacat=See-All-Categories

Jul 14, 2011 | Audio & Video Receivers

1 Answer

Turntable doesn't play at volume of other components. seems muted. Do I need to install a pre-amp in line?


"PHONO" is the only designated connection on an audio device that is literal and exclusive. Nothing but PHONO will work right on it and old-school turntables would require it to preamplify the tiny current produced by a Phono cartridge.
If your unit doesn't have a PHONO connection you will have to get a Phono Preamp to connect between the TT and any Line Level input, like Aux.
eBay always has some... http://shop.ebay.com/?_from=R40&_trksid=p3984.m570.l1311&_nkw=phono+preamp&_sacat=See-All-Categories

Apr 30, 2011 | Pioneer VSX-D812 Receiver

1 Answer

My turntable won't work with the pioneer vsx-d608


Your old-school un-preamplified turntable requires an outboard Phono Preamp (*) to PRE-amplify and RIAA-equalize the tiny voltage signal produced by the phono cartridge. It will not work on any Line Level input like Aux or CD. What you will hear is a useless, barely audible, tinny playback.

* Like this one...

http://cgi.ebay.com/Behringer-PP400-Compact-Phono-Preamp-Preamplifier-NEW-/310288044769?pt=LH_DefaultDomain_0&hash=item483e9bd2e1


Feb 11, 2011 | Pioneer VSX-D608 Receiver

1 Answer

How to connect a record player to Pioneer


If there are no specific phono inputs, then a phono pre-amp must be purchased. These usually cost around $20. This pre-amp will boost the signal level to that of a CD player or tape deck so that either a tape input or aux input can be used. Once you have the pre-amp, just connect its output to an open input on the receiver.

Dan

Jan 12, 2010 | Audio & Video Receivers

1 Answer

I have a Pioneer PL-S50 turntable that I want to connect


hi you need a Phono Input Attenuator Line Adapter
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Jan 06, 2010 | Denon AVR-689 Receiver

1 Answer

SX-1600 + KD-491F


Hi again,

It would seem that you posted the problem here also. With your kind permission, I will repost my excerpts of my responses that others may benefit on similar concerns.

A. Most current receivers no longer include a PHONO input. Perhaps what could be done is to purchase a phono to line level pre-amplifier to go along in your purchase for a new receiver.

I was made to understand that the Pioneer SX-1600 is prone to speaker output problems which could either be:
1. the speaker relay (protection); and/or
2. the amp, STK4191II Stereo Module.

Either should be relatively easy to work on and perhaps you can try the services of a locally available qualified electronic technician since the repairs would not be too specialized. The service manual may be of help (or at least a schematic , they may be downloaded from here and here).

B. To recap what you need is a receiver that can accommodate:
4 - Pioneer S-DF1-K (15-100W, 8 ohms)
1 - Pioneer PD-F407 25 Disc CD Player
1 - Pioneer CT-300 dual tape deck
1 - Kenwood KD-491F turntable

C. Possible choices are (keeping in mind that the power output should be less if not equal to 100 watts and a turntable/phono input):
i. Onkyo TX-8522 Stereo Receiver;
ii. Yamaha RX-397 100 Watt Natural Sound AM/FM Stereo Receiver;
iii. Sony STR DE695 AV receiver;
iv. Teac AG-790 200 Watt Stereo Receiver;
v. Denon AVR 888 - AV receiver - 7.1 channel.

Some of the above also includes feature(s) to hook up to your video system. Some may even require a fifth speaker (subwoofer).

Incidentally, you can also choose another brand/model even without a turntable/phono input. As initially posted, a turntable/phone to line level pre-amplifier is only required. Here are some examples:
a. XP200 Turntable Preamp - Nano Series;
b. Pyle® Pro PP999 Phono Preamplifier;
c. Pro-Ject Phono Box Turntable Preamplifier;
d. Radial J33 RIAA Turntable Preamp Direct Box

Good luck with your project.

Apr 29, 2008 | Audio & Video Receivers

1 Answer

Poor sound


You need to connect most turntables to a PHONO input or buy a PHONO preamp. Many newer receivers do not have a PHONO input. The AUX port you are using would work fine for a device like a CD player, but turntables need to be amplified. You can buy an external Phono pre-amp from Radio Shack. I don't know anything about this site, but something like this device should work for you. http://www.phonopreamps.com/tc400pp.html

Jun 19, 2007 | Pioneer VSX-D711 Receiver

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