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Vintage Pioneer PL-510A turntable question - Lack of sound volume
Posted on 11/2/19 at 9:13 am
Posted on 11/2/19 at 9:13 am
I bought a never opened in the box Pioneer PL-510A Turntable at a garage sales about 30 years ago for $75. For what ever reason, I have never really used it other that plug it in to see if it works. I am now updating my music studio and unboxed it and plugged it in. It works mechanically just like new but I cannot get the audio to get very loud. Why would it work but not put out the amount of sound you would expect?
fwiw...the random album I picked from my old high school stack of vinyl to test it was Deep Purple - Machine Head..track 1 "Smoke on the Water!!
fwiw...the random album I picked from my old high school stack of vinyl to test it was Deep Purple - Machine Head..track 1 "Smoke on the Water!!
3
Posted on 11/2/19 at 9:22 am to Crow Pie
What is the rest of your setup? I ask because don’t old turntables need some sort of analog converter or something?
Posted on 11/2/19 at 9:30 am to CalcuttaTigah
quote:Interesting...did not know that.
What is the rest of your setup? I ask because don’t old turntables need some sort of analog converter or something?
I am currently using a:
1) 2008 Harmon Kardon AVR 154 receiver (Pretty sure it is digital, I used it when I had a home theater)
2)Two vintage JBL Model 4311B speakers (and a 12" sub)
The speakers are NOT the problem, they are fine!
This post was edited on 11/2/19 at 9:31 am
Posted on 11/2/19 at 9:33 am to Crow Pie
Sounds like you have it plugged into a receiver’s aux input. It needs to be plugged into a device with a phono preamp.
Posted on 11/2/19 at 9:36 am to Crow Pie
Yep. Looks like that receiver has no phono input. You can buy a separate phono preamp adapter thing and still use that receiver. I’ll let the other audiophiles here like Marco recommend one. I used one a while back and it sucked but it was probably because it was cheap.
Posted on 11/2/19 at 9:46 am to SUB
Yes I just looked at the manual and there is no Phono input. Any recommendation are appreciated
Posted on 11/2/19 at 12:31 pm to Crow Pie
Posted on 11/2/19 at 12:39 pm to Crow Pie
Go to Music Direct website, or call them and speak with them. Tell them you need an inexpensive phono pre-amp for a Moving Magnet cartridge. There should be a few available around $60-$120. They will all suit your needs.
Posted on 11/2/19 at 12:50 pm to PhilipMarlowe
quote:
Here’s a little article with a brief explanation of why you need a phono preamp, and a list of several preamps at different price points.
quote:.
If you plug a record player directly into the standard line input of an amplifier, you would hear a very quiet sound with no bass, about 10% of what you might expect
That is exactly what happened...no bass at all.
Thanks
Posted on 11/2/19 at 1:04 pm to Crow Pie
FYI...a phono preamp, also known as a phono stage or a phono section, does 2 things.
First, it “bumps up” the low voltage output signal coming from the cartridge to “line level”. The level of a regular line output (tape, cable box, CD player, etc.) is around 4mV. The level coming off a cartridge is much lower, around .25mV to 2.0mV, depending on the cartridge, and must be bumped up.
Second, and most important, it contains the board with the RIAA frequency curve, which restores all the low frequencies. When a record is cut, all the low frequencies are “compressed” so they can fit the bass frequencies onto a record groove. If this was not done, the grooves would be way too wide to fit all the low frequency info, not to mention the needle would never be able to track the groove. When the LP is played back, the “compressed” signal must be passed through a “decompressor”, a.k.a. the RIAA EQ, which adds all the low frequencies back into the signal.
There is your explanation for not hearing any bass.
First, it “bumps up” the low voltage output signal coming from the cartridge to “line level”. The level of a regular line output (tape, cable box, CD player, etc.) is around 4mV. The level coming off a cartridge is much lower, around .25mV to 2.0mV, depending on the cartridge, and must be bumped up.
Second, and most important, it contains the board with the RIAA frequency curve, which restores all the low frequencies. When a record is cut, all the low frequencies are “compressed” so they can fit the bass frequencies onto a record groove. If this was not done, the grooves would be way too wide to fit all the low frequency info, not to mention the needle would never be able to track the groove. When the LP is played back, the “compressed” signal must be passed through a “decompressor”, a.k.a. the RIAA EQ, which adds all the low frequencies back into the signal.
There is your explanation for not hearing any bass.
This post was edited on 11/2/19 at 1:06 pm
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