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D'Agostino Integrated With Two REL Subs

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Posted on November 18, 2015 at 20:41:33
rsyouman
Audiophile

Posts: 40
Location: chicago
Joined: January 8, 2004
Need some REAL experience and advice for using a pair of REL G2 Subwoofers with a D'Agostino Momentum Integrated.

I have talked to the folks at D'Agostino and they say the Integrated should work fine if wired per REL instructions for a differential amplifier and two REL subs.

In the manual, REL states that the key is to use the LFE option and wiring scheme. Connect as instructed except that ground should be connected to chassis ground on the amplifier (or to a screw on the chassis). Do not connect ground to speaker output ground on the amplifier.

Unfortunately the D'Agostino folks do not have direct/real experience with this REL two sub configuration to verify that this would be safe. I can not find the forum and thread, though long ago
I thought that I read that this would push the amp into a thermal shutdown.

Bottom line, I can't ask D'Agostino to find a pair of REL subs and test this for me before I roll the dice. Is there anyone out there who has REAL experience with this configuration or possibly with the D'Agostino Momentum Stereo Amplifier (which I am told is very similar in design to the Integrated).

 

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RE: D'Agostino Integrated With Two REL Subs, posted on November 19, 2015 at 02:56:43
morricab
Distributor or Rep

Posts: 9175
Location: switzerland
Joined: April 1, 2005
 A friend of mine has two Rel G2 subs and he is using them with a balanced preamp (Einstein "The Tube"). Works great there but I do not know exactly how he has them wired...I am guessing though that he is doing it strictly by the instruction manual.

 

RE: D'Agostino Integrated With Two REL Subs, posted on November 19, 2015 at 07:13:08
HighEndWire
Audiophile

Posts: 1624
Joined: August 2, 2002
 I've used 2 Rel subs in my main system for years (and make my own upgraded cables). My subs are older models (and I have two other older Rels in different systems as well). Why not ask Rel?

From the picture of the G2, it looks like they use the same Speakon (4 pole) connectors for the high level connection. Basically it is stealing a little bit of signal from the amp to mimic the sonic characteristics and is more like an interconnect. The Speakon connectors have two positive and two negative terminals. A standard Rel cable with have a jumper wire between the negative terminals and on a stereo amp with one sub one would connect the two positives and one negative. With two subs, if the cables are the same, I would think one would connect the positives of one sub to the corresponding channel and do the same with the negative for that channel.

 

RE: D'Agostino Integrated With Two REL Subs, posted on November 19, 2015 at 19:01:36
fantja
Audiophile

Posts: 15518
Location: Alabama
Joined: September 11, 2010
 Hopefully the inmates can get you the correct info, REL subs, are the best in the business.

 

RE: D'Agostino Integrated With Two REL Subs, posted on November 20, 2015 at 11:30:41
Jim Smith
Industry Professional

Posts: 1097
Location: Atlanta, GA area
Joined: April 5, 2000
 I have had a lot of experience with different REL configurations. I often felt that the printed (and online forums) info was too scattered.

When I called REL and asked for technical help re the best hook-up, I have ALWAYS gotten good info.

I didn't need to be an owner to get help.

Suggest you call them for peace of mind.

I also think that they are the most musically involving sub, once you get the best hook-up for your amplifier's needs.

Best regards,

Jim Smith

 

RE: D'Agostino Integrated With Two REL Subs, posted on November 20, 2015 at 20:53:52
neolith
Audiophile

Posts: 4842
Location: Virginia
Joined: February 21, 2002
Contributor
  Since: December 2, 2004
 I have a single Rel Strata III and was actively biamping the mains with two W4S ST-500 stereo amps. As I had two balanced amps to feed into the sub, I had to purchase a special cable from Sumiko. The cable ground (black) was connected to the preamp (ie system ground) definitely not to the "negative" speaker posts and one wire (red) was connected to the positive of right bass and the other (yellow) to the positive of the left bass amp. No connection to the negative speaker terminals. The neutrix went to the "Balanced" XLR input.

I am back to a single amp now but am still using the "special cable" but I don't think it is necessary.
So what I suspect is that if you use two subs, connect the cable grounds (black) to the amp or other system ground, and the red and yellow wires to the positive and negative of the left and right speaker outs, and the Neutrix to the "Balanced" XLR of each sub and all should be well. The special cable should not be needed unless you connect to the "Unbalanced" XLR but there is no sane reason to do this. The idea is to avoid connecting both positive outs or both negative outs to each other or either the positive or negative to a ground.



"Our head is round in order to allow our thoughts to change direction." Francis Picabia

 

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