Previous Thread
Next Thread
Print Thread
Rate Thread
Turntable connection to AVR
#352391 07/25/11 02:42 PM
Joined: Jun 2010
Posts: 48
M
buff
OP Offline
buff
M
Joined: Jun 2010
Posts: 48
I bought a vintage Pioneer PL-S40 turntable from e-bay yesterday. (Mint condition) I'm getting back into vinyl. I noticed that my h/k 645 AVR does not have phono inputs. I'm wondering if I could use the CD input (not being used) to connect the turntable? Will their be any issues?

Re: Turntable connection to AVR
Milford3 #352392 07/25/11 02:55 PM
Joined: Feb 2009
Posts: 3,466
connoisseur
Offline
connoisseur
Joined: Feb 2009
Posts: 3,466
The phono inputs had an additional pre-amp built into them. You'll need to get an external phono pre-amp (Google it). Then you'll connect the output of that pre-amp to any of the line inputs of the receiver (the CD one will be fine).


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris
Re: Turntable connection to AVR
ClubNeon #352403 07/25/11 05:04 PM
Joined: Jan 2011
Posts: 1,291
J
connoisseur
Offline
connoisseur
J
Joined: Jan 2011
Posts: 1,291
be sure you don't buy any "preamp", but only a Phono preamp;
phono preamps have built-in equalization.
otherwise, the low freq. will be very weak and you'll get shrieking high frequencies.
this is a standard (RIAA) equalization curve, and the reason is so that low frequencies don't take much space on the grooves.

Re: Turntable connection to AVR
J. B. #352411 07/25/11 06:34 PM
Joined: Jan 2002
Posts: 3,270
connoisseur
Offline
connoisseur
Joined: Jan 2002
Posts: 3,270
The inverse RIAA playback equalization also provides greater than 15 dB of high-frequency reduction at its maximum, which greatly reduces the inherent groove noise of vinyl, which would otherwise be intolerable for music playback. It's a built-in form of noise-reduction for all vinyl recordings.

As J.B pointed out, during recording the bass frequencies are greatly reduced to prevent overcutting during disc mastering; at the same time the high frequencies are heavily boosted, so that on playback through an RIAA phono preamp, the circuit reduces the high frequencies and the groove noise along with it.

Regards,
Alan


Alan Lofft,
Axiom Resident Expert (Retired)
Re: Turntable connection to AVR
alan #352414 07/25/11 06:55 PM
Joined: Jan 2011
Posts: 1,291
J
connoisseur
Offline
connoisseur
J
Joined: Jan 2011
Posts: 1,291
i did not remember why the high freq. were boosted up.
thanks Alan. :-)

Re: Turntable connection to AVR
J. B. #353076 08/13/11 12:16 AM
Joined: Jul 2009
Posts: 2,281
connoisseur
Offline
connoisseur
Joined: Jul 2009
Posts: 2,281
Just an fyi and i realize this post is a little dated but the op should check if the turntable cartridge is a moving magnet MM or moving coil MC. Not all preamps support both as i found on my search of phono preamps.


DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry

Moderated by  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Link Copied to Clipboard

Need Help Graphic

Forum Statistics
Forums16
Topics24,395
Posts432,247
Members15,417
Most Online2,082
Jan 22nd, 2020
Top Posters
Ken.C 18,044
pmbuko 16,437
SirQuack 13,690
CV 11,815
MarkSJohnson 11,451
Who's Online Now
2 members (CV, norap), 186 guests, and 3 robots.
Key: Admin, Global Mod, Mod
Newsletter Signup
Powered by UBB.threads™ PHP Forum Software 7.7.4