Interesting. Good budget build material, who knows. PPI DSP looks nice.

 

Appears to be the Mini 2x8 with toslink without Mini's added price for that option ($45) so that's already a plus.

Has only a semi-parametric EQ, but each output channel gets 31 bands with Q control which is more than enough for a basic processor. Also from the looks of it, the crossover section has the usual frequency input & slope options, but note that it appears a different slope for the same channel in bandpass can be used unlike other processors. Big plus there! GUI looks very user friendly....

 

but note that it appears a different slope for the same channel in bandpass can be used unlike other processors. .

Zapco processors allow for this. The 80prs and I am assuming the P99 also allow for this. I would think others would also do this. What processors are you referring to that don't?

There were threads that talked about these two processors from a while ago. I think I remember them mentioning the minidsp in those threads but not sure.

 

It's not an off the shelf 2x8 board...the 2x8 board is like 8"x10".

I don't think it is a miniDSP.

 

Interested to hear your take...

 

I don't know what it is... but it's about the size of the new GZ processor I think.

 

Cirrus Logic ring a bell? That's the platform it's using. Looked up the company and it seems they offer quite a bit. Wonder how stable it is... will be a determing factor.

 

That was mainly in reference to the Bit One. Not sure if that was updated on later models or not. I lost steam in seeking one long ago with all of the issues it had.


Have a link for the other thread speaking of these processors?

 

That was mainly in reference to the Bit One. Not sure if that was updated on later models or not. I lost steam in seeking one long ago with all of the issues it had.


Have a link for the other thread speaking of these professors?

http://www.diymobileaudio.com/forum...45-new-ppi-deq-8-dsp-ppi-releases-their-own-dsp-unit-also-source-unit-info.html

 

I honestly don't get why Epsilon releases identical products under 2-3 brand names, just use 1 brand name and stick to it or add something that differentiates between them, especially when you can see the Soundstream and PPI are the same for a lot of products but the Soundstream looks ok and the PPI is extremely ugly.

 

Take a look at the last two pages.

 

Ha! Okay... I see it now. Didn't know that thread was still ongoing.

 

No that was not mentioned, but that's is a very good question. I assumed it was but now looking at the case and the GUI makes me go hmm.

 

I edited out the bit about Mini... apparently this is not one of their products. Now that makes things very interesting as to the reason why. Cut cost perhaps? Not sure, but have to admit the package (which I expect to go for around $250-275) will be something to contend with on the budget circuit. Owning a 80prs (since it was thrown in an earlier statement) will make you realize real quick how limited it is... great deck, but if this unit could be had for the same price and add in a inexpensive headunit, then that would be a combo the 80prs can't touch.

 

Something else that intrigues me is the lack of info on it's low level voltage output..

Anyways... found this one. More than I expected it to be advertised for, but they're authorized.... might be less when it is actually released.

Soundstream Harmony 32 Bit / 192kHz Digital Signal Processor with 31 Band 1/3 Octave EQ, 8 - 8V RCA Outputs, Optical Out, 4 Way Crossover, Remote

 

I would totally jump on a deq-8 for $240

 

I was trying to sort out which is better the DEQ-8 or the DSP-88R ?
I never owned a stand alone DSP, A bit technical for me...

 

It would appear the 88r has a display and the deq8 does not. The deq8 has 4 rca channels in the 88r has 2. Other than that its pretty hard to tell from the listed specs what features each one has.

 

To add to that. The 88r with its volume control on the display would appear to be a little more geared towards people using things like ipads instead of a head unit. But that is speculation on my part.

 

The 88R would be quite cost effective compared to others IMO. Not a true parametric, but good enough considering although you have Q adjustment, you also have EQ per channel which is a big step above just having a 31 band L/R EQ like in the 80PRS/P99RS. When you can concentrate on individual drivers instead of affecting other drivers near the crossover point as well as pinpointing a specific frequency without throwing others out of wack then that is a big help in tackling tuning issues.

 

Anyone install one of these yet? Thinking of trying out either the Soundstream Harmony or the PPI DSP-88R. They have been in stock for a week or two. Did email PPI and asked for more info on size and a possible look at the owners manual.

This is probably the most cost effective DSP for my needs. Also need something compact in size. Installing on the back wall of my truck. Can't go active with my current head unit ( Pioneer AVH5500 ). Do have a PPI 900.4 amp but don't know how accurate I can get the crossover points. Not to mention the tuning capabilities of my head unit.

 

I doubt anyone has tried one yet, but I'm also thinking many won't flock to either so fast since there's plenty of fully reviewed DSP units on the market as of now. I still have a 3sixty.3 unwrapped in the closet waiting for it's fate. The 80prs is holding it's own in the other vehicle so there's no rush although it would be nice to have the Harmony and Stealth amps for aesthetics & stealth. In a few months I will expect some reviews to come out, then again I think most are waiting for reviews before they buy resulting in a sort of stalemate.

 

It's 209 Shipped on onlinecarstereo

That's a pretty fantastic deal for 8 channels of DSP. I don't think any other processor can touch it for that price. I downloaded the software from the PPI site, and it is pretty comprehensive. I'm a little let down by not having the choice of using a parametric or graphic EQ. The variable Q on the graphic almost makes up for it.

Other things to note:

• You can save configurations - I'd assume that means you can call them up from the dash controller.
  
• When you first start the software you have to set up the EQ It's not truly 31 bands per channel. See picture below. But basically you have either 6 full range channels and 2 sub channels, or 4 full range, 2 midbass/midrange and 2 sub channels
  
  
• The lowest that you can set the HP filter is 20hz for a subsonic filter. Although 20hz at 48db/oct is probably fine for that if you need it.

Overall, at that price I want one. Just need to figure out where to get the money...hmm what can I sell? PPI DCX-730? Apline PXE-H650?

 

Does only having two channels of RCA inputs matter when its being fed a signal from a deck with a sub output? I assume that you can disable all crossover setting on the deck and have a full range signal though the front and/or rear outputs. Is there any disadvantage to this though? Most processors have four channels of inputs at the minimum.

 

The way most of us here use processors (IE to run a 3way front plus sub) there is no reason to use more than a pair of outputs to feed the processor from an aftermarket deck. The scenarios where you would want more than just a pair would be if you needed fader control. (Realistically that shouldn't matter either, as you have the ability to adjust the output of each channel individually, just not from an easy menu on the head unit.)

If you are using a stock deck, in many cases there needs to be signal summing applied as the rears are often bandpass or low passed, and the fronts high passed requiring all 4 to be used to get a full range signal. Which this unit also does through the high level inputs.

 

The only concern with amps that small is heat dissipation.

 

I dont think I could beat 200 bucks for a DSP. ill be honest, I have never used DSP and some of the other units intimidated me especially when you say you have to hook a laptop to tune. One question, would I lose my head units volume control on the PPI DSP-88R? I see several times it list volume control through the remote control.

 

The fact of the matter is that Laptop tuning should not intimidate you. Laptop tuning is what makes DSP easy. I think about the endless menu cycles I had to go through to tune using the DCX-730, or even the alpine 9833 or 9887. It's so much easier with a laptop plugged in.

In response to the volume control question: If you have a source unit with a flat frequency response at any volume (ie no volume based eq/loudness) then you can use your source volume. If you have a source unit that applies different equalization as the volume changes, then you'll want to use the DSP's volume control.

 

I was thinking about pulling out my old Eclipse 5303R. It doesnt do or apply anything to volume so in the case, I should be able to use the source as volume control.

 

makes you wonder where they cut corners to get the cost down that low?

The same could be questioned of the Mini DSP, but it has it's strong followers and successful results. The question is does it have what matters and is it reliable? That has yet to be seen until a guinea pig steps up. I don't think it will be long at that price.

 

Exactly, on top of the fact that most premium brands mark up their products to ridiculous levels.

I'm working on getting the scratch together to get one and try it. Looks like it will do what I need it to do better than the PXA H650 I have that has limited flexibility.

 

But this is 1/3 or 1/5 the price.

The price of what? The Mini DSP goes for cheap too. It's cut corners are power supply, software has to be purchased ($10), and number of output channels. Doesn't make it less reliable. In fact, even with all of the extra stuff you have to add it still comes up very inexpensive compared to other units on the market. Look at the price of the new Audiocontrol analogue units and they offer nowhere near what these units offer.

 

Are the 88r's in stock yet? after a few weeks I Finally had Online give me refund.