MY TURNTABLE WORKS FINE ON MY VINTAGE SHERWOOD RECEIVER, HOWEVER, WHEN I CONNECT TO MY NEW DIGITAL SURROUND SOUND RECEIVER, THE VOLUME IS SO LOW THAT IT SOUNDS LIKE ALL I'M GETTING IS THE SOUND I HEAR OF THE NEEDLE ON THE RECORD. AND YES; EVERYTHING ELSE WORKS FINE ON THE NEW RECEIVER AND THE TURNTABLE STILL WORKS FINE ON MY OLD AMP. IS MY TURNTABLE PERHAPS INCOMPATIBLE WITH A DIGITAL AMP? I'VE TYPED IN THE TURNTABLE INFORMATION, BUT I DON'T THINK THAT'S RELEVENT, AS FRIENDS HAVE TOLD ME OF THE SAME PROBLEM WITH OTHER BRANDS OF VINTAGE TURNTABLES. IS THERE ANYTHING I CAN DO TO CORRECT THIS?
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Re: LOW VOLUME ON MY SL-B35 TURNTABLE
You probaably do not have a phono input on the digital surround amp you are using. Your sound is bad for 2 reasons
Your Turn Table has low output level,about 100 times less than a CD player.
You need RIAA equalisation to reduce the treble and boost the bass. This is for replaaying any modern vinyl or LP's
You can get an outboard preamp that matches the output of your T/T to suit the normal aux input on todays digital surround amp. You can get one online from here. Or if you are keen build one from a circuit here
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You must connect the turntable to the plugs on the left side of your amplifier when you are behind the pre amp. You have to know if you are using a MC or a MM element in your turntable and connect to the right plugs. Don't forget to put the switch in the right position (also MC or MM) The moving coil element is giving a very low voltage accordingly to the Moving magnet element. So it needs some extra amplification.
Let's work with FM as that is ONboard and can't be connected wrong. Does THAT work?
Turn the volume control to something medium.
The errant switch, control or condition may change and you will suddenly release the amp's full power and possibly destroying your speakers. If a signal isn't audible at 1/2 volume it's probably not there.
Carefully examine the front panel for clues like a misplaced Mute or Tape Monitor control or Multichannel Analog Input selected.
There is a good chance that a common control may have developed a high-resistance or 'dead' spot through idleness and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.
Turn the volume to something reasonable and see if that helped.
Your A/V Receiver must have the decoders for the source on the BD and for the newest audio surround sound you should be using a HDMI cable to the A/V receiver because the SPDIF optical or digital coaxial cannot handle the Dolby TrueHD and other newest codecs. Probably you are getting the down-converted audio because of this.
First detirmine if it is only the turntable that is causing this problem, by connecting something else to another terminal. If that works fine it will be the cartridge preamp that is causing the problem. From what you describe it sounds like an IC that is playing up.
If the other device plays up as well as the turntable, I still suspect an IC, but this time in the main pre-amp. The reason I suspect an IC is that by the sound of things both channels are playing up and therefore it has to be somepart that has both channels going in and out of it- thus IC!
Turntables generate a very low signal. Phono inputs on receivers containa pre-amp section to boost the signal to "line level" or the same level as other audio devices. I would suspect that you need to add that pre-amp section. Phono preamps are available for around $20 or so and are inserted between the turntable and the standard audio input on the receiver or amp.
The use of 901's in any digital AV receiver setup for anything EXCEPT STEREO listening through the 901's alone requires you to have a separate amplifier for them and to avoid having to use a Tape Monitor.
That is because if you activate any Tape Monitor circuit at all, you will kill any digital sources. That is a function of AV receivers in general, nothing to do with 901's. Assuming you want the 901's as part of your multichannel sound, you need to get a dedciated power amp just for the 901's and you don't need to use a Tape Monitor loop.
You can draw the Front Left and Right signals out of the Main Out connectors, go into the Active EQ's Amplifier IN Connections; then Out of the EQ's Amplifier OUT Connection to a separate amp and attach the 901's to that amp. This way you won't introduce proprietary and potentially damaging Active Equalization back into anything in the AV Receiver with its conventional speakers.
Run through the speaker level settings with the new amp at a suitable volume setting (if it has a volume knob; many don't). Then leavethe amp volume control alone.
The AV Receiver can still drive the Center, Surrounds and the Sub(s) as it is designed and control the volume on everything.
If you can hear music with the volume up, but like it was turned down low (from the power amp), then yes there is something up with it. If it's the same on both left & right channels, then it's something common to both. For instance the power supply, or an IC that has both channels going in it.
If however the power amp does produce sound normally with another device, then either the turntable has a fault, or the pre-amp has, perhaps on the pre-amp inside it for the cartridge.
I have a question first... are the 901's amplified by a separate amp as they should be in a multi-channel (non-stereo) setup?
Better yet read the following then decide if you have iy set up right to begin with. If so, I'd just treat the Ipod or Mac as auxilliary inputs on the receiver. :
I wrote most of this for a different receiver, but if you account for minor differences to your receiver this will work just fine. There's good news and bad news. The bad news you need a separate amp because a multichannel receiver with Bose 901's attached as recommended for a standard stereo receiver will only sound right in STEREO on stereo analog material. The other speakers around the room are not designed to receive its Active Equalization and if you engage your Tape Monitor you will NOT BE ABLE TO HEAR DIGITAL sources at all. Tape Monitor is for analog stereo material only and on modern AV receivers it disables any digital inputs so you really can't use the Tape Monitor circuit or attached devices for modern digital sources. However, you can still employ the various DSP options to spread 2-channel analog source material around the room. I do. The good news. I have a setup similar to what you want to do and it works great! A separate stereo amp for the 901's was my solution. I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers and the Rear Surround channel, with the Active EQ between the receiver Front L&R Outputs and the 901's amp channels. My receiver controls everything and just drives the Center and Surround speakers. You could get by with just a stereo amp for the 901's. A Carver M-200 is a good efficient amplifier that would have you cooking just fine (2x100W). Run it with the Active EQ between the receiver Front L&R Pre-Outputs ** and the 901's amp channels. ** Front Pre Out (or one of your analog Tape Outs) >>> Bose EQ Amplifer IN, then Bose EQ Amplier OUT >>> new amplifier IN. Attach the 901's to the new amp, set its volume to Max and run through your receiver's speaker level setup. Write off the Tape Out as an input if you use it to extract the Front L&R channels. DO NOT monitor it or you'll chop the 901's out of the signal path AND kill any digital source audio in the receiver.
The flashing digital input for DVD means its digtial input is either not connected or not transmiiting. If yoy still hear the DVD it is probably because you also have the analog cables attached. Is that right?
If you had both attached the receiver would opt for digital over analog but would default to analog if the digital signal was not there.
If you can connect the DVD's digital cable you will get actual 5.1 surround sound from DVD.