Recent content by Ekeko

Epa Chamo! When working with Venezuelan Installers, I found useful to set up some space in my garage, bought a router and a couple of other tools and always plan carefully the installation in stages...I end up doing some of the work myself and give them detailed instructions on the rest. To go...

Just revisiting to share some thoughts after a couple years. I finally got some info on bridging the slash amp. It could have been done by using a special JL 8 ohm sub. You got 150 W from the amp by going that way. I had the RF for a while, it actually worked well bridged (272w fr birthsheet)...

They will…when technology catches up and they superate all the challenges. Smarter designers tend to use all the technology at their disposition to make the best of their amps…but there are still significant challenges to class D design. For now, check the specs I told you about (above) in...

I "almost" agree with you here: most modern amps are good enought that under certain conditions sound "almost" identical. Other things that used to affect amps sound (like slew rate) have improved so much with modern components that even a cheap bazooka amp will have more than acceptable...

Problems with the posting, I can't delete.

Same disclaimer as before, there are other variables, but from what I can see from the specs: For a ported IDQ10 v3 in a 1 cu/ft box you have the -3db point at 34 hz, so you aren't gaining too much (you get +3db usually from porting). A ported IDQ10v3 in a 1.2-1.5 cu/ft box does better: 115...

Here is mine: Denon DCA 3500; class A? (probably "quasi-A"); dual power supplies, non-switching, NNFB, 4wX40 + 80wX1... PS. How is this for "old Skool": http://www.redwoodradio.com/car_radio_repair.htm

Using this formula: 10 x log10(Power) + Efficiency = Maximum Output I came up with 116.5 db for the ported v2 and 112 db for the sealed v3. For the IDMAX10D4 V.3 in a sealed .9cu/ft is 116 db, but you need at least 1000 W per speaker Counterintuitive, isn't it? The reason why I say to call...

It seems to me that a PORTED v2 will play as loud/louder at it's given RMS handling (250W) vs. a SEALED v3. at it's given RMS (500W). With the v3 you do get a flatter curve, the ported v2 has a 3-4db "bump"in the 30-40HZ region... but that is how most people set their systems anyway (loudness...

Hi, I found this equation for calculating desired power for a given SPL: dBW = Lreq - Lsens + 20 * Log (D2/Dref) + HR W = 10 to the power of (dBW / 10) Where: Lreq = required SPL at listener Lsens = loudspeaker sensitivity (1W/1M) D2 = loudspeaker-to-listener distance Dref = reference...

I only have experience with the IDQ 10. The IDQs sealed sound great with less power than other subs; however they do end up "hitting plate" a bit sooner than other higher powered subs. THE FOLLOWING IS JUST THEORY, take it with a grain of salt: The v2 in a ported enclosure are about 7.5 db...

Thanks for all the info. I also got an RSD to compare. I might put it in my wife's car (sedan, I got a hatch back). Much higher power handling than the IDQ... I am curious about the Treo but I believe it has a deeper mounting depth (5.5" & recommended enclosure >.8 cu/ft.) I went back...

I just found one of these for $ 42. It was recently refurbished. Anyone has any experience with the V1 generation (IDQ10)? It seems that it has a smallish Xmax but ID claims in the manual that the larger cone area more than makes up for it...it sounds fishy...but I have heard so many good things...

I almost got to a good start: 1986 Renault LeCar 1300cc with 80's Pioneer Tape unit (all analog), Pioneer amp (same size as the HU, fitted right under), Front Pioneer paper cone Coax & rear 6"X9". It was quite nice for 1988 but shortly before I got my license, !@#$%^ car thief pulled the...

Is this the D3? D310 - 10" Dual Voice Coil Subwoofer Textured Copolymer Cones with Aluminum Dust Cap Nitrile Butadine Rubber (NBR) Surround Extra Heavy Gauge Stamped Steel Basket Optimized Spider with Balanced Linear Suspension Integrated Tinsel Leads Venturi Vented Basket Vented Pole...