[SilentJ20]

While cruising the web researching different sub amps, I came across this:

OEM Model 500


It's a rack/shelf mount BASH sub amplifier with variable phase control and an adjustable subsonic filter. I could not find any pricing or other info on it other than what is on the website. Has anyone seen this before?

 

[superedge88]



Quote:
Originally Posted by SilentJ20 /forum/post/18197955


While cruising the web researching different sub amps, I came across this:

OEM Model 500


It's a rack/shelf mount BASH sub amplifier with variable phase control and an adjustable subsonic filter. I could not find any pricing or other info on it other than what is on the website. Has anyone seen this before?

With it's frequency response only going down to 20 hertz it may not be a good choice for a subwoofer, who knows how much it rolls off before 20 hertz?

 

[elisaw]

Interested in this OEM 500 amp - anyone with experience?

Hi, I realize that this thread is old. I was considering options for a subwoofer amp, and it looks like the specifications of this one fits the bill.
The manual can be found on the OEM Systems website.

The concern with the 20Hz low end rating may be "fixed" to a certain extent by the subsonic filter adjustment.

But considering I have absolutely NO experience with amplifiers, I am talking from reading things on the internet over the past couple days.

Has anyone had experience with these units? Looks like they can be found for ~$310-380.
For what I am looking for, options are limited. I would either purchase something like this or the Dayton SA230. looking for a 400-500W rack amp with LFE-in to power my sub.

If anyone has thoughts or advice, it would be greatly appreciated!!

 

[Jay1]

The SA1000 is a better buy for $400

http://www.parts-express.com/dayton-audio-sa1000-subwoofer-amplifier-rack-mountable--300-811

Never heard of the oem systems amp

 

[LTD02]

for a rack amp, why not the inuk3000dsp?

 

[elisaw]

The Dayton SA1000 is a strong unit - perhaps more than I want to spend and more power than I need. The OEM at $310 is still higher than I want to spend... but my options are limited.

There are a couple things (and benefits) regarding the specs of the OEM unit over the Dayton.
the THD rating on the Dayton is not favorable - just under 1%, versus

 

[squiers007]

The Power amps (ie, Behringer inuks) would require for me to put up and wire additional equipment. I am pretty intent on getting something with an LFE-in.

Why would you need to add additional equipment for an Inuke, but not the other rack mount amps you're considering...? All you need for input to the Inuke is an XLR cable, and if you have RCA out of your receiver all you need is an RCA to XLR cable...

To power your single sub I would go with the Inuke 1000dsp. @ only $200 this will give you plenty of power (has limiters so you don't over power), and plenty of DSP to play around with. Not much out there can beat it for the price...

 

[elisaw]

My receiver has an LFE-out for the subwoofer, not RCA. And my understanding is the LFE-out is processed differently and not read correctly unless it goes to an LFE-in. Plus, my house is already wired for the LFE-out to the subwoofer....

 

[rhodesj]

I don't understand what you mean be "LFE not RCA." What amp is it?

 

[squiers007]

My receiver has an LFE-out for the subwoofer, not RCA. And my understanding is the LFE-out is processed differently and not read correctly unless it goes to an LFE-in. Plus, my house is already wired for the LFE-out to the subwoofer....

All "LFE-out" on most any receiver are going to be either RCA or XLR... I've never seen one that was something else..

You are correct that the LFE channel contains a different track than the other speakers, but it is still an RCA type connection and your "house wiring" that's already in place is almost certainly an RCA cable.

Just to verify however, what receiver are you using? and do you have any pictures of the connector at your wall plate for the "home wiring"? We will be able to let you know what you need with this info.

 

[elisaw]

I have an Onkyo TX-NR808.
LFE is the "low frequency effects" output/input. It allows the specifications of the receiver to be read by the amplifier for cut-off, programming, etc.
From my reading, connecting from the LFE-out to a plain RCA-in causes level and power issues driving the subwoofer signal. To avoid issues, and to allow my receiver to handle the subwoofer programming, i would rather use the LFE.

 

[Wrager]

Wow, you really don't understand how this works.

 

[squiers007]

I have an Onkyo TX-NR808.
LFE is the "low frequency effects" output/input. It allows the specifications of the receiver to be read by the amplifier for cut-off, programming, etc.
From my reading, connecting from the LFE-out to a plain RCA-in causes level and power issues driving the subwoofer signal. To avoid issues, and to allow my receiver to handle the subwoofer programming, i would rather use the LFE.

I would advise you to do some more reading on the topic. What I was recommending to you was to use the LFE. The LFE out is an RCA type connection that sends both the LFE channel and anything below the HPF/LPF you have set for your main speakers, typically around 80hz. While certain AVR's do have problems outputting enough voltage to drive a Pro-audio style amp, the Inuke's typically do not have this problem which is why I recommended it to you. All you need is an RCA to XLR cable and you are in business. Please let us know if you are still confused, we are hear to answer questions and help others out. Good luck!

 

[elisaw]

I would advise you to do some more reading on the topic. What I was recommending to you was to use the LFE. The LFE out is an RCA type connection that sends both the LFE channel and anything below the HPF/LPF you have set for your main speakers, typically around 80hz. While certain AVR's do have problems outputting enough voltage to drive a Pro-audio style amp, the Inuke's typically do not have this problem which is why I recommended it to you. All you need is an RCA to XLR cable and you are in business. Please let us know if you are still confused, we are hear to answer questions and help others out. Good luck!

Thanks for the input. I was under the impression that the issue with the voltage was all pro-audio amps, but it is good to know that the Inukes may be an exception.

I read reports that the Inukes fans are pretty loud. Is this something I should additionally be concerned with?

It does look like I would need to read more about this before making decisions.

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On a separate note, I called the OEM systems company about their Model 500 amplifier.
From talking to them, they indicated that they normally make their amplifiers for large name companies, and do not really market their own amplifier. Based on size/specs/etc it is most similar to the Polk and Klipsch amps, but they would not confirm which company(ies) they make amplifiers for. Interesting....

 

[squiers007]

Thanks for the input. I was under the impression that the issue with the voltage was all pro-audio amps, but it is good to know that the Inukes may be an exception.

I read reports that the Inukes fans are pretty loud. Is this something I should additionally be concerned with?

It does look like I would need to read more about this before making decisions.

-----------------------------------------------------------------------------------------------------------------------------------
On a separate note, I called the OEM systems company about their Model 500 amplifier.
From talking to them, they indicated that they normally make their amplifiers for large name companies, and do not really market their own amplifier. Based on size/specs/etc it is most similar to the Polk and Klipsch amps, but they would not confirm which company(ies) they make amplifiers for. Interesting....

Yea, it it only certain amp/receiver combos that seem to have issues...

The fans on the Inukes can be quite loud, but compared to other Pro-audio amps are not terrible. For those who have not used them before it can be somewhat of a shock. I have had mine in my living-room for a little over 3 months now and only notice the fan noise when nothing is playing. If I'm watching a movie or listening to music I do not hear it, even during quiet sections. Others have been really annoyed with it from Day 1, so a lot of it seems to be personal preference.

Like I said earlier, just let us know if you have any other questions.

 

[smcmillan2]

I read reports that the Inukes fans are pretty loud. Is this something I should additionally be concerned with?

The single fan in my 1000DSP drove me crazy. A number of members are using alternate fans in theirs, check out the http://www.avsforum.com/forum/155-diy-speakers-subs/1686642-inuke-fan-mod-test-results.html

Also note that going with a pro amp such as the iNuke will require a slight modification of your sub, as you'll need to install a SpeakOn connector (such as this) for the output from the new amp to the driver.

 

[squiers007]

The single fan in my 1000DSP drove me crazy. A number of members are using alternate fans in theirs, check out the http://www.avsforum.com/forum/155-diy-speakers-subs/1686642-inuke-fan-mod-test-results.html

Also note that going with a pro amp such as the iNuke will require a slight modification of your sub, as you'll need to install a SpeakOn connector (such as this) for the output from the new amp to the driver.

You technically only need a speakon on the amp side of the cord... you can use any type of connector or bare wires on the sub side if you make your own cord.

 

[smcmillan2]

You technically only need a speakon on the amp side of the cord... you can use any type of connector or bare wires on the sub side if you make your own cord.

Ahh yes, true, bare wire through a small hole in the sub would work, a little caulk to seal it up and done. Good point.

 

[squiers007]

Ahh yes, true, bare wire through a small hole in the sub would work, a little caulk to seal it up and done. Good point.

That would work, I was actually referring to the people who re-wire the backside of there dead plate amps so you can use banana plug receivers from the line-level inputs as the direct connection the the sub. This avoids having to drill any holes and keeps the sub looking stock even thought the plate amp may not work...

 

[elisaw]

Is there any reason why this wouldn't work?
http://www.amazon.com/Monster-Stand...ref=lh_ni_t?ie=UTF8&psc=1&smid=A1X4GOO6KZLJRA