what does this mean

loki1957 · « **Reply #20 on:** 16 Nov 2008, 09:12 pm »

I don't think the in and out motion will hurt anything. If it were a vintage speaker I would be concerned about the surround breaking down. I have never tried to change the set up on mine because, 1, I'm to lazy. 2, carts cost too much and I don't have very nimble fingers anymore. 3, I have over 50 year old eyes that just don't see well anymore.

Good luck and keep us posted if you get the drivers to stop.

blakep · « **Reply #21 on:** 16 Nov 2008, 09:34 pm »

Quote from: bluemike on 16 Nov 2008, 07:19 pm

Quote from: loki1957 on 16 Nov 2008, 04:54 pm
From what I've read about set up the cart isn't set up perfectly. Mine does the same thing at the beginning of a record and by the time it reaches the middle the in and out movement pretty much stops. The geometry changes as the cart tracks inward.
Thanks for chiming in. I have a buddy who is good at this sort of thing to check my table and settings I'm mostly worried about this woofer pumping action damaging my speakers .. I will look into the filter however i've been told it does effect the sound

I'll reiterate what I said earlier: if you're speakers are ported, get a subsonic filter. If you're having problems with sealed units you might investigate other options. As to the the filter affecting sound, if you have ported speakers I can assure you it will only be in a postive way. Think about it: do you think your system is sounding its best having the woofers moving in and out in ways in which they are not supposed to in terms of reproducing audible sound as well as robbing your amplifier of its ability to properly amplify what you hear because it is being totally screwed up trying to amplify a bunch of garbage you can't? Ask whoever told you that it will affect the sound those questions.

lazydays · « **Reply #22 on:** 17 Nov 2008, 04:15 am »

I'd say it's feed back. If the sound is a little muddy, and the highs are not all that transparent that's where I'd be heading. I use a Ginko Cloud under my table, and the differences were outstanding
gary

Listens2tubes · « **Reply #23 on:** 28 Nov 2008, 02:14 am »

For a quick test drive grab a few of the packing air pillows ie; Cell-O air cushion, Sealed Air Fill-Air inflatable packing and the like that come as packing. Place said air bags between the turntable and the shelf it sits on. See if the woofers calm down then.

bluemike · « **Reply #24 on:** 2 Dec 2008, 07:35 pm »

Found the source of the woofer pumping
Moter needed servicing

Will fire her up tonight and listen ...

Thanks to all who assisted

Pat

bluemike · « **Reply #25 on:** 8 Dec 2008, 01:55 pm »

Quick update on my problem
Well th woofer pumping is still existent at very high volumes ..it's gotten better after the table was serviced and the woofer excursion is not as extreme
Good thing the Project phono i'm using has a subsonic filter

The other issue I have is the gain seems to be too low on the Phono and I have to raise the volume on my pre amp to very high levels to get the music to sound right
i'm using 47k input on the Phono stage and my Pre amp has 20db Gain @1khz

To recap on my equipment
I have a Lenco L-75 fitted with a Rega 300 and using a Denon 110 Cartridge

The result the music doesn't have that added weight and is a bit on the lean side unless I raise the volume very high 5:00 position

Thoughts sugggestions anyone

Pat

Wayner · « **Reply #26 on:** 8 Dec 2008, 02:15 pm »

Where do you have your phono preamp plugged into?

Wayner

bluemike · « **Reply #27 on:** 8 Dec 2008, 02:17 pm »

Quote from: Wayner on 8 Dec 2008, 02:15 pm

Where do you have your phono preamp plugged into?

Wayner

I have it plugged into a power bar (the power bar does have some sort of filteration not sure if that matters)

Wayner · « **Reply #28 on:** 8 Dec 2008, 02:19 pm »

I mean what input on your stereo preamp, or receiver are the interconnects plugged into from you Project phono preamp?....like Phono, CD, AUX

Wayner

bluemike · « **Reply #29 on:** 8 Dec 2008, 02:23 pm »

I'm using the cd input

(for digital I use tape input as it seems to sound the best with one input plugged in)

Wayner · « **Reply #30 on:** 8 Dec 2008, 02:32 pm »

What setting do you have on your Project Phono Pream, MM or MC?

bluemike · « **Reply #31 on:** 8 Dec 2008, 02:33 pm »

Quote from: Wayner on 8 Dec 2008, 02:32 pm

What setting do you have on your Project Phono Pream, MM or MC?

Moving Magnet

Wayner · « **Reply #32 on:** 8 Dec 2008, 02:39 pm »

I thought you were running a Denon 110.

If you are running a 160, that is a MC cartridge that outputs 1.6mv.

You need to switch the Project phono preamp to the MC setting and you will have higher gain. That should fix your problem.

Wayner

bluemike · « **Reply #33 on:** 8 Dec 2008, 02:41 pm »

Quote from: Wayner on 8 Dec 2008, 02:39 pm

I thought you were running a Denon 110.

If you are running a 160, that is a MC cartridge that outputs 1.6mv.

You need to switch the Project phono preamp to the MC setting and you will have higher gain. That should fix your problem.

Wayner

Wayner I am running a Denon 110 apologies if I confused you ...

Wayner · « **Reply #34 on:** 8 Dec 2008, 02:58 pm »

What is the output of that cartridge?

W

bluemike · « **Reply #35 on:** 8 Dec 2008, 03:15 pm »

Rim was kind enough to pull out the specs for me in an earlier post
here it is

Specifications
# Type: Moving coil
# Output voltage: 1.6mV (1kHz, 50mm/sec)
# Frequency response: 20Hz-45kHz
# Output impedance: 160ohms
# Channel separation: More than 25dB (1kHz)
# Channel sensitivity difference: 1dB or less
# Tracking tip: 0.1 x 0.2mm special
# Needle: Elliptical solid diamond
# Compliance: 8x10-6 cm/dyne (100Hz)
# Tracking force: 1.8g ? 0.3g
# Weight: 4.8g

The project tube box has a few setttings
I have mine set at 47k ohms /120pf no jumpers

There are other inputs which increase the pf value 220,340,440 keeping at 47k
I haven't experimented with the other settings

bluemike · « **Reply #36 on:** 8 Dec 2008, 03:18 pm »

A bit more usefull info on the Denon 110 cartridge

The DL-110 is specified at 1.6 mV output, but needle dr. claims a measured 2.2 mV:

This just get's more and more interesting

Wayner · « **Reply #37 on:** 8 Dec 2008, 03:27 pm »

You need to put your Project phono preamp on the MC position. The 1.6 output is too low.

Wayner

bluemike · « **Reply #38 on:** 8 Dec 2008, 03:29 pm »

Quote from: Wayner on 8 Dec 2008, 03:27 pm

You need to put your Project phono preamp on the MC position. The 1.6 output is too low.

Wayner

Does this change things ?
I've just looked at the specs. of your phono stage. The mc input impedance only goes up to 220ohms so I suggest you try going in to the mm input, which is a standard 47k
John was kind enough to offer this advice

bluemike · « **Reply #39 on:** 8 Dec 2008, 03:35 pm »

Quote from: Wayner on 8 Dec 2008, 03:27 pm

You need to put your Project phono preamp on the MC position. The 1.6 output is too low.

Wayner
which ohm setting do I use if put my phono on MC

Here is the specs on the Project Tube SE 2

Technical data Pro-Ject Tube Box SE II
Tubes 2 x ECC83 (12AX 7A)
Input impedances, MM 120, 220, 340 and 440pf/47kohm
Input impedances, MC 17, 18, 20, 22, 69, 100 and 220ohms/120pF
Output voltage 300mV/1kHz at 3mV/1kHz (MM input)
Gain, MM 40dB
Output voltage 300mV/1kHz at 0,3mV/1kHz (MC input)
Gain, MC 60dB
Noise floor, MM 95dB (100dB - A weighted)
Noise floor, MC 75dB (80dB - A weighted)
THD MM 0,03%
THD MC 0,1%
RIAA-equalisation curve accuracy 20Hz - 20kHz / max. 0,3dB
Subsonic filter at 18Hz with 24dB/octave
Outboard power supply 16V/1.000mA AC, suitable for your country's mains supply
Power consumption 16V/850mA AC
Dimension W x H x D 103 x 72 x 158mm
Weight 1.050g without power supply