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AUDIO FORUMS >> General Discussion and Support >> Plate amp substitute
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Message started by Palomino on 03/30/21 at 20:01:29

Title: Plate amp substitute
Post by Palomino on 03/30/21 at 20:01:29

I have experimented with bi amping for awhile now. For the low end I have used a plate amp, plus a crown XLS 1000 and XLS 1002.

In general, I like the class d in the crown amps to the plate amp. Tighter, cleaner bass.

I ran across a well reviewed little class D amp in youtube video showing it had respectable measurements. When looking for it on Amazon, I found they also had pretty much the same amp that could either be a full range monoblock or a sub amp. I figured for $50, why not give it a try.

I got it and right now I am running it with my subwoofer which covers from around 40hz on down. It produces a pretty tight bass sound. Better than my dayton 250W plate amp, which is not the best, but certainly costs more.

So if you are an audio cheapskate and/or wanted to experiment with bi-amping, this would be an inexpensive alternative.

When I first heard it, I thought of anyone looking to add a little low end to your Betsy setup.

https://www.amazon.com/gp/product/B07MXFDD2J/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1

They also make a 200watt version which given the inefficiency of my sub driver, might have been a little better match, but so far the 100 watt version is working well.

Title: Re: Plate amp substitute
Post by Lin on 03/31/21 at 16:25:08

FWIW from what I can find this is a 50 watt @ 4 ohms (30w 8 ohms) amp with the 24 volt ps.

Title: Re: Plate amp substitute
Post by Palomino on 03/31/21 at 16:37:25

Did somebody measure it?

It's driving my sub (~87 db efficiency).

I wouldn't even think about using it in HT, but to drive a fairly efficient sub or an A15 for music, I think it will do the job.

I actually bought it to drive an efficient (~91db) sub I built for a secondary system, but the bass is nice and tight so I am leaving it in my main system and the plate amp is going to the secondary system.

Title: Re: Plate amp substitute
Post by metropolis7 on 03/31/21 at 18:10:27

Is anyone running their plate amps off the RCA outputs of a CSP preamp?
I do, and find it quite a challenge to "ride the gain" while simultaneously getting a good balanced bass output from my mid-bass drivers.

Title: Re: Plate amp substitute
Post by Lin on 03/31/21 at 18:53:58

Info from TI data sheet.

Title: Re: Plate amp substitute
Post by Palomino on 03/31/21 at 18:58:43

Well my PSU is only 19V so probably not
getting that much.