sundownz

Lots of MECA guys run the tiny fusing classes with 1500Ds - I would try that.

If your mids and highs play up to 300 Hz and stop, hehe

They are improving in all regards... nothing is being sacrificed to reduce the amps size. The new output section MOSFET bank is about 50% stronger than the old while using half as many parts (this is where the size reduction came in) and the new power supply FETs handle about 50% more current than the old ones (same # of parts, just better ones... like the 2500D is using). Another level of over-built on the semiconductors No reduction in sizing of the power supply transformers or output inductors either.

They are at the last hub before arriving to me -- the scheduling desk at the trucking company told me I will have them tomorrow. Should ship most if not all of the ones on order by Friday.

After nearly four years as our best selling product (our first Class-D on the market for that matter) the SAZ-1500D is being re-designed. Everyone knows and loves the current model as it is a powerful, reliable, work horse of an amp but we have been quietly thinking about what to do in order to make a fitting replacement for a while now... I think that everyone will be happy with where it is going Details will be sparse right now but it is going to shrink about 1.6" following our trend of making amps that are more powerful per square inch (SAZ-2500D and SAX-1200D especially). We are also looking into removing the internal fusing as well -- that was very commonly requested. Details on pricing, power output, etc will be coming out later. I'll start putting out some of the other details when the prototype gets closer -- just wanted to make it known that if you want a NEW current model SAZ-1500D the production run on route to me now is probably the last one (assuming all testing of the new prototype goes as expected). I have a fair amount coming in, though, so anyone that wants one should have the opportunity to get one !

Before anyone asks... we tried closing the sides up and SPL dropped -- it was best open like that.

* Drivers side fully foamed in and enclosed * Passenger side fully foamed and enclosed The above made my SPL drop hard (I am doing it to prepare for my bandpass setup)... so we came up with an idea. * Mini skateboard ramp ! * Another view This brought my peak SPL back to where it was and my efficiency almost back to where it was. Too bad I never tried the ramp before the foam... I thought about it but never got around to it.

The 3500D excels on a reactive load - you can see around 1 dB at a 1 ohm load vs. a 3000D.

Good job

We no longer use the plastic alignment rings so this is no longer necessary -- but I'll leave it around in case anyone has an old recone.

Yes.

Looking really good Dave !

You will be fine. It's quite uncommon for the spiders to come off anyway -- and you are well within the box size and power range. The bolt down is primarily for SPL competitors (like me) who burp 1000-2000+ watts on them.

If you are running higher than 400-watts RMS you should consider adding epoxy like my tutorial shows : Tutorial: How to strengthen spider landing glue on SA-8 - SSA Car Audio Forum

Bolt down ring is done for the next production run that will be on it's way to me shortly. It sits on top of the spider insider of the top lip on the frame and bolts in from the back - this way the cone can't come down and smack the bolt heads.

MMATs makes a 0.5 ohm amp -- they are designed to handle the current, although, running that much current through an amp is still less efficient.

You can burp it no problem in parallel.

The things that make it work so well have to do with the phase of the port to woofer cone and also playing with loading the port against a plane on both ends to get the correct tuning... some of which was luck on the first box but I was able to reverse engineer it and make another similar box as shown here.

They should enter customs on June 11th and be to me not long after.

Same score with an NS v.1 today as well (155.9 many times) -- may be maxing out the pressure my Jeep can take with a rear-firing port. Looks like I need to start on my forward firing setup soon!

Unfortunately the graph seems to be gone.

I've used them on 8 ohm speakers before - plenty of power for most drivers out there

Great work

You can post on the forum or email.

It is 20.15" long -- height and width = all other SAZ amps.