Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 4 1 2 3 4
Re: EP subs sucking life (gain) out of the 350's....
BlueJays1 #258603 04/28/09 09:29 PM
Joined: Jun 2007
Posts: 4,357
connoisseur
Offline
connoisseur
Joined: Jun 2007
Posts: 4,357
Is it possible for companies to design all subwoofers so they have the same input sensitivity and amp design, thus eliminating this problem?


The only reasonable argument for owning a gun is to protect yourself from the police.
Re: EP subs sucking life (gain) out of the 350's....
Ya_basta #258606 04/28/09 09:59 PM
Joined: Sep 2008
Posts: 4,116
connoisseur
Offline
connoisseur
Joined: Sep 2008
Posts: 4,116
I'm not a subwoofer designer \:o but the EP350 and EP600 are different animals all together. Taking into consideration the enclosure, driver, amp etc I wouldn't expect them to have the same senstivity (or any other similar specs) because they are entirely a different design with different design goals intended by the engineer.


I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne
Re: EP subs sucking life (gain) out of the 350's....
BlueJays1 #258607 04/28/09 10:29 PM
Joined: Jun 2003
Posts: 6,833
W
Wid Offline
axiomite
Offline
axiomite
W
Joined: Jun 2003
Posts: 6,833

Randy, have you tried to co locate the 350s to see if that would help with the proper amount of gain?


Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud

Re: EP subs sucking life (gain) out of the 350's....
Wid #258609 04/28/09 10:46 PM
Joined: Aug 2004
Posts: 6,379
Likes: 7
axiomite
Offline
axiomite
Joined: Aug 2004
Posts: 6,379
Likes: 7
Randy, I think I've lost the picture here. Your original post indicated that *adding* the EP600 reduced the output of the EP350s, but later posts seemed to imply that the issue was "just" a difference in gain/sensitivity/whatever between the 600 and the 350.


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8
Re: EP subs sucking life (gain) out of the 350's....
bridgman #258610 04/28/09 11:06 PM
Joined: Sep 2008
Posts: 4,116
connoisseur
Offline
connoisseur
Joined: Sep 2008
Posts: 4,116
From my understanding the EP600 needs much less gain from the reciever.

One way to test this is to calibrate the single EP600 by itself and see what the receivers gain is set at compared to dual EP350's (without the 3 way connection).


I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne
Re: EP subs sucking life (gain) out of the 350's....
bridgman #258611 04/28/09 11:19 PM
Joined: Jan 2004
Posts: 13,840
Likes: 13
shareholder in the making
OP Offline
shareholder in the making
Joined: Jan 2004
Posts: 13,840
Likes: 13
Hey John, hope I'm not confusing anyone, maybe my terminology is not accurate.

Lets say I want to calibrate all my subs to 75dB's and lets say currently one of my 350's is the only thing hooked to my receiver, this is not problem. I turn on the receiver test tones and adjust the volume (gain) knob on the sub to achieve 75dB on the SPL meter.

Now I want to add another sub, so I either use a Y adapter at the receiver, or just daisy chain my other 350 to the Line Out on the first 350, no problem. I turn the first sub off, calibrate the 2nd sub to 75dB's, now both subs are at 75dB's seperately and when both turned on get about 78-9dB's combined.

Now, I decided to add the 600 in the loop. I've tried using the Y adapter at the receiver, daisy chaining it at the end of the line, in the middle, or even as the first sub.

As soon as I plug in the Coax cable with the EP600 switch still turned off (AC plugged in though), and go back and independently measure each sub again, each 350 has dropped by 6-7 dB's, so they are no longer at 75dB, and are not reading 68dB.

To get them back in line, I have to crank the gain almost to the max. The 600 is another story, for me to achieve 75dB with the 600, the knob as to be very low, like 6 o'clock. Even at that the receiver still is like -6dB, which does not work well with the 350's. It is a crap shoot.

I'm hungry...later..


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: EP subs sucking life (gain) out of the 350's....
SirQuack #258612 04/28/09 11:20 PM
Joined: Jan 2004
Posts: 13,840
Likes: 13
shareholder in the making
OP Offline
shareholder in the making
Joined: Jan 2004
Posts: 13,840
Likes: 13
Wid, I suppose I could try that, but I'd have to move all my subs around again and put the 350's back up front. I kinda like having the 600 up front below my center as it is so big and since I got a horizontal design, does not look as nice standing up. The rubber legs look fugly. \:\)


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: EP subs sucking life (gain) out of the 350's....
SirQuack #258622 04/29/09 01:44 AM
Joined: Jan 2004
Posts: 13,840
Likes: 13
shareholder in the making
OP Offline
shareholder in the making
Joined: Jan 2004
Posts: 13,840
Likes: 13
Ok Wid, I moved things back the way they were months ago. Now I'm even more confused....

When I had my Denon 2805, I had the 350's up front below the screen between the 80's. My 600 was placed along the left side wall behind the listening area about 5 ft. The 2805 would always calibrate the distance to about 27ft. I was told this was due to the internal delay of a DSP based sub. However, if I just measured the 350's they would come out right on the money.

So, a few months ago, placed the 600 back up front, and placed one 350 to the right side of the listening area, and the other on the left wall where the 600 came from. Interesting, when I recalculated distance with the 2805, it came out about 13ft, which is about dead nuts for all 3 subs.

Jump ahead to a few nights ago. Audyssey had my subs at about 12ft which seemed fine. Tonight I have moved the 350's back up front, and the 600 back in the left wall, and guess what, I'm now getting 27.1 ft again for a distance (delay) setting.

It sounds great, but I'm trying to figure out if the 350's are being ignored or what..this is just to weird.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: EP subs sucking life (gain) out of the 350's....
SirQuack #258624 04/29/09 01:54 AM
Joined: Sep 2008
Posts: 4,116
connoisseur
Offline
connoisseur
Joined: Sep 2008
Posts: 4,116
Ask axiom if it is safe/plausible to use a y-adapter on the subwoofer out and feed it into the R or L input on the EP350's in your multi sub configuration. In theory this can give your EP350 a signal boost without adjusting the receivers settings.


I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne
Re: EP subs sucking life (gain) out of the 350's....
SirQuack #258627 04/29/09 02:11 AM
Joined: May 2002
Posts: 10,654
shareholder in the making
Offline
shareholder in the making
Joined: May 2002
Posts: 10,654
Randy, I'll more or less second John B.'s point: the fact that the EPs have higher amplifier gain(fairly obvious from the low settings on the level control that we use)doesn't explain why putting one of them into the circuit would drop the level of the other subs. Did Axiom seem to understand that this is what you were really asking about?


-----------------------------------

Enjoy the music, not the equipment.


Page 2 of 4 1 2 3 4

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

Link Copied to Clipboard

Need Help Graphic

Forum Statistics
Forums16
Topics24,940
Posts442,457
Members15,616
Most Online2,082
Jan 22nd, 2020
Top Posters
Ken.C 18,044
pmbuko 16,441
SirQuack 13,840
CV 12,077
MarkSJohnson 11,458
Who's Online Now
0 members (), 402 guests, and 3 robots.
Key: Admin, Global Mod, Mod
Newsletter Signup
Powered by UBB.threads™ PHP Forum Software 7.7.4