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Blazing247's picture
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Why wont my amp blast my lps

Hi all,

I have a technics sl-210 turntable connected to a teac ag-790 amp with a dedicated phono input. The amp is a bit of a monster and will shake the house on cds etc but with the turntable it just wont give anywhere near the volume I know it should. I know that amps without a phono input need a pre-amp to boost the input but this has a phono input. When playing a cd if you have the volume at 30 it is blasting and you can hear it down the road but with lps it needs to be up there to get above quiet. Any advice would be much appreciated. Thanks all

 

Jim

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RE: Why wont my amp blast my lps

Looked up the Teac's manual to see if there was a MM or MC setting but it was not much help. Do you know if the TT op is MM or MC because there is a  difference between the outputs one being a llot lower than the other, I think that Moving Coil has the lower output but is less common??

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RE: Why wont my amp blast my lps

No phono stage (or at least a in built one) that I can think off will take a phono  signal to anything approaching the output level of a CD player. In a few systems the CD output level is just to high. You also have to factor in the output of the cart, they can vary from 1.5 or so to 6 mv. Resultingly the amp itself will need to have more gain applied to bring vinyl up to CD levels through the speakers. It can not therefore give the levels you ''know'' it should from vinyl. From what you have said your neighbours are probably thankful. Smile

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RE: Why wont my amp blast my lps

Dont know I'm affraid. Like you say there is not much info in the manual. All I can find for the amp is

input sensitivity         PHONO 6.5 mV/22kohms  LINE 230mV/22kohms

frequency response     PHONO 20Hz to 20kHz, +/- 3db  LINE 20Hz to 35kHz -3db

All that means nowt to me but someone in the know may have an idea!

Blazing247's picture
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RE: Why wont my amp blast my lps

Luckily for all we live in the middle of nowhere

Blazing247's picture
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RE: Why wont my amp blast my lps

Will fitting a pre amp then increase the volume. It really does need something as if you try and crank up the volume just now it becomes very distorted and the speakers start to hum and vibrate.

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RE: Why wont my amp blast my lps

What cartridge are you using?

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RE: Why wont my amp blast my lps

It is an EPC-P30 cartridge

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RE: Why wont my amp blast my lps

When I far my Rega RP1 TT with Ortofon om5e cart had to have to volume on my Brio between 10-11 o clock, since owning my RP3/Elys 2 I know use the sane volume levels that I use for CD - which is 9 o clock and that's plenty loud enough so it may be the cartridge is shot 

Michell / Icon Audio / Kudos

 

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RE: Why wont my amp blast my lps

Does that mean replacing the stylus or the whole cartridge?

 

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RE: Why wont my amp blast my lps

Whole cartridge - Ortofon Red 2m would be good 

Michell / Icon Audio / Kudos

 

respe's picture
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RE: Why wont my amp blast my lps

the red is not that clever, the blue is better.

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RE: Why wont my amp blast my lps

Cartridges don't tend to have a standard output, and that's part of your problem. The second bit is that their output is less than CD anyway, so you'll always need to boost the volume if you want the same level of sound. The other option is to buy a phono preamp that can boost the signal to the same as CD - I think Clearaudio and some others make them.

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RE: Why wont my amp blast my lps

just ordered a very cheap pre amp to see if that works before I spend any real money on a good one. We will see.

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RE: Why wont my amp blast my lps

I presume  that if I am using a pre amp I shouldnt use the phono input on the amp as it will be too much input power, or does it not matter?

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RE: Why wont my amp blast my lps

Blue & red have double the output voltage of your existing model but very different budget

Yamaha V2065. MS Mezzo 5.1 Panasonic 42. Sony BD. Garrard 86SB. WD Live TV. SkyHD.

http://www.whathifi.com/forum/home-cinema/lounge-hc-signature-update-bass-traps

 

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