Pro amp recommendations (instead of Emo XPA-2) - AVS Forum
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post #1 of 10 Old 01-02-2011, 04:30 PM - Thread Starter
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Well, I missed the Emo sale, and I'm not really looking forward to paying what they are asking now for the XPA-2, so I'd like to tap a little expertise here and see what's available in the pro market. Here are my basic requirements/wants:

1) 300X2 into 8 ohms, 4 ohm stable
2) RCA in
3) 12v trigger (mini plug)
4) Reasonable sound level (my gear is in a closet, so I can deal with some minor fan noise, but more than "minor" won't work for me).
5) <75 lbs
6) Low noise floor (don't think this will be a problem, but I can't have speakers humming without a signal present, that's unacceptable).

Thanks for the guidance, and, if possible, please provide a link to a recommend place to purchase the amp. I've never bought pro gear before, so I have no idea who is a good or bad retailer.

Thank you!

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My Onkyo 3008 (non-professional) review
http://www.avsforum.com/avs-vb/showt...php?p=19539055
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post #2 of 10 Old 01-02-2011, 05:53 PM
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You will be hard pressed to find an amp that meets all of those requirements. The Bogen M300 will meet most of them but cost just as much or more. The Crown XLS 1500 will probably produce a savings but is not going to have unbalanced connections or 12V trigger.

One option would be (2) Episode E-2100 which is more of a pro-sumer option or possibly a used Parasound 2250
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post #3 of 10 Old 01-02-2011, 06:21 PM
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I can't think of any pro amps with 12V trigger inputs. There are work-arounds for that, though, using switching power strips with trigger inputs such as http://www.amazon.com/Niles-Black-FG...=3HI2QDUT8LKNR or auto-sensing "smart-strips" like http://www.amazon.com/Smart-Energy-S...ref=pd_sim_e_3

Not many pro amps have RCA inputs either, but that's no big deal. I've used interconnect cables with RCA on the pre-amp end and TS plugs on the amp end. RCA-to-XLR is also an option, if the amp has XLR jacks.

As to the rest of your requirements, those should be pretty easy to meet with pro amps. Fan noise is the biggest issue for many home-theater users, but that can usually be alleviated by replacing the fans with ultra-quiet PC fans if the stock ones are too loud.

As to specific brands, Crown and QSC seem to be quite popular around here. I use 4-channel Carvin DCM1204s in my system so that they don't take up so much rack space.

If you want to check out some amps in person, head down to your local musical instrument supply store.
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post #4 of 10 Old 01-02-2011, 06:37 PM - Thread Starter
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Thanks for the recommendations; looks like I have some more reading to do. I don't see any amps with 12V trigger, but that power strip looks like a great solution to that problem.

The Crown XLS Drivecore series seems like it's going to meet most of the other requirements; I'm just wondering about the class D amp (for full range music, I use class D for all my subs today, and it works great). Anyone have any experience with these amps running full range? It seems they are going to fit all the other requirements (except for 12V trigger; and I don't know what the audible noise is like from the fans on these amps)..

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My Onkyo 3008 (non-professional) review
http://www.avsforum.com/avs-vb/showt...php?p=19539055
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post #5 of 10 Old 01-02-2011, 06:43 PM
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I currently run a QSC GX-5 for the front and an XPA 5 for the center and surrounds. The QSC has RCA inputs, however there is no 12v trigger. I have it plug into my Belkin powercenter and when I power it on the amp comes on after a 5 sec time delay. I trigger the XPA 5 from that same powercenter, but the XPA 5 is plug directly in the wall socket. I run a whole house surge breaker.
The QSC GX-5 works well for my setup. They just release a GX-7. Oh, I did do the fan mode so no fan noise. The GX-5 barely gets warm.

Onkyo TX-NR5009, Emotiva XPA-2 & XPA-5, Oppo 103D Blu-Ray Player, Denon DCD 1650AR, Teac V 670 Cassette Player, Pioneer CLD-D704 Laser Player, JVC HM-DH3000U VCR, Technics SL1200MK2 Turntable, Belkin PF 60 Power Conditioner, Comcast Motorola DCT 3412, XBOX 360, PSA XV-15se Sub, Velodyne DLS-4000R Sub, HTD Level 3 Main and Center Speakers, Infinity SS 2002 Side Speakers, JBL E-20 Rear Speakers, BIC DV 62si Height Speakers, Sony KDL-40V5100 TV. Harmony One.
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post #6 of 10 Old 01-02-2011, 07:34 PM
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I have an AVR with class D amps (Pioneer SC-27) and have been using a pair of Crown K1's (or K2, I forget) in our church system for over ten years now. They do fine full-range, and the K-series amps are very quiet. They will cost more than an XPA-2, however. I have bought a lot of gear from Matt at Sweetwater (www.sweetwater.com) and have been happy.

"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley
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post #7 of 10 Old 01-02-2011, 08:45 PM
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To hold your price point, I think you should look for a used amp. Take a look at the Yamaha P series pro amps. Fans almost never come on even when pushed hard
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post #8 of 10 Old 01-03-2011, 03:58 AM - Thread Starter
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The P series looks perfect, and the prices are excellent (even new, they are ~ 1/2 of what I was looking to spend). However, they don't have any RCA in jacks on them; how do I take an RCA out from my AVR into an amp like that? Is it going to be a big production trying to get the input signal to an amp without RCA connections? Is 1/4" the same connection as RCA (I know it's the same number of cables, but is it the same expected voltage level)?

Thx!


Quote:
Originally Posted by TedO View Post

To hold your price point, I think you should look for a used amp. Take a look at the Yamaha P series pro amps. Fans almost never come on even when pushed hard


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My Onkyo 3008 (non-professional) review
http://www.avsforum.com/avs-vb/showt...php?p=19539055
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post #9 of 10 Old 01-03-2011, 01:00 PM
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Quote:
Originally Posted by mjfink View Post

The P series looks perfect, and the prices are excellent (even new, they are ~ 1/2 of what I was looking to spend). However, they don't have any RCA in jacks on them; how do I take an RCA out from my AVR into an amp like that? Is it going to be a big production trying to get the input signal to an amp without RCA connections? Is 1/4" the same connection as RCA (I know it's the same number of cables, but is it the same expected voltage level)?

Something like this should work: http://www.amazon.com/Hosa-CPR201-Du.../dp/B000068O16

I've used those same cables to go from RCA pre-amp output to 1/4" inputs on a pro-amp.
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post #10 of 10 Old 02-20-2011, 02:51 PM
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anyone have the yammy p series?
if so, does anyone have trouble with the voltage from the avr?

i plan to get 2 used p2500 bridged or 1 - p5000 for two 18" sealed subs.

Thanks

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Vesper Lynd: Because of the bitter aftertaste?
James Bond: No, because once you've tasted it, that's all you want to drink.

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