Thumpper

anyone have any hands on experience with the Soundstream HR crypt 4 amplifier???? need some good power for my 2 sets of JBL 660gti components and want clean power with no background noise..my JBL GTO 75.4ll sux nuts for background hiss is the HR crypt 4 worth the money??

LOL....I remember back in high school...my parents went to Hawaii so I had the house to myself had a shower...walked into the kitchen with a towel around my waste...towel came loose so I had it slung over my shoulder...grabbed a drink and proceeded to walk back towards my bedroom to get dressed I heard the toilet flush (thinking I was home alone)..looked into the living room and my sisters best friend was sitting their staring at my salami

well after about a gallon of Lemon Extract I feel like a new man.....LOL it's amazing the amount of torment those little things cause..I'll be doing Lemon Shots on a daily bassis for now on

my set up is not SPL based but here it is car:............1993 Ford Tempo Trunk Electrical:....dual batteries...stock alt Amps:.........Crown A3000gti Subs:..........two Icon 10" Box:...........Hybrid Horn 2.25cf3 tuned at 31hz Mic:............USB Termlab...mic 12" from pillar 3" up Tone:.........25hz Score:........142db (cabin sealed) will have new numbers with four 10" Icons soon

I got the Icons on a Crown A3000gti.... I don't have the birth sheet for it but the thing has ALOT of head room

I need enough midbass to keep up with the 1140w rms on the components and the 3200w rms+ on the subs

I can't wait to get some numbers with the 4 Icons..... always wanted to hit the 150db club in the 20hz range or at least get close to it

I love watching your builds..very inspiring

I was thinking about adding 4 of these with a Crown BPX 2200.1 for MidBass

LOL.....

I call this the Kidney stone box........ I thought I was going to friggin DIE during the construction of this one :cry: anyways..here is the finished product..... for a pair of RF T215D4 subs......5.5cf3 plus displacements tuned at 33hz

bracing can help alot if placed properly..... any kind of screen door or window bracing that creates any turbulance towards or away from the port and woofer will show a drop in SPL with a Termlab it makes the biggest difference with low tuned enclosures..the low slow notes are the ones that can really flex the enclosure

hows the lemon juice coming? I have just finished the first 750ml bottle.....opening bottle #2 right now got the Oxycodone in the PEZZ dispenser to

unfortunately I was borne with Medullary Sponge Kidney a side effect is mass amounts of kidney stones

I know a 12" would sound good sealed but I would take the ported 10" over it tuning at 31hz sounds deep , drops plenty with the lows and have a nice over all flat response

I don't drink beer anymore.....and from what I remember I still got the stones when I did I have tried alot of different things...the Lemon and Olive Oil works the best IMO

I just picked up a gallon of lemon extract.....it disolves them as well mix 5 ounces of virgin olive oil with lemon extract...slam it back then drink a 50/50 mix of lemon extract and water till the stone disolves

I have multiple stones....Sponge Kidney on both sides so it's nothing new to me it's just that this stone is rather LARGE..it's un real on how something 10mm in size can be so agrivating

I want to fawking die at the moment...there is not enough pharmacutical dope on the planet to even put a dent in the pain discuss.......

might as well add this vid to the collection...... I won't have the labtop in the car any more during testing...LOL

the angle on the first box was just for something different...the angle on the 2nd box was because of height issues

this will heelp you understand the T/S parameters Fs------This parameter is the free-air resonant frequency of a speaker. Simply stated, it is the point at which the weight of the moving parts of the speaker becomes balanced with the force of the speaker suspension when in motion. If you've ever seen a piece of string start humming uncontrollably in the wind, you have seen the effect of reaching a resonant frequency. It is important to know this information so that you can prevent your enclosure from 'ringing'. With a loudspeaker, the mass of the moving parts, and the stiffness of the suspension (surround and spider) are the key elements that affect the resonant frequency. As a general rule of thumb, a lower Fs indicates a woofer that would be better for low-frequency reproduction than a woofer with a higher Fs. This is not always the case though, because other parameters affect the ultimate performance as well. Re--------This is the DC resistance of the driver measured with an ohm meter and it is often referred to as the 'DCR'. This measurement will almost always be less than the driver's nominal impedance. Consumers sometimes get concerned the Re is less than the published impedance and fear that amplifiers will be overloaded. Due to the fact that the inductance of a speaker rises with a rise in frequency, it is unlikely that the amplifier will often see the DC resistance as its load. Le--------This is the voice coil inductance measured in millihenries (mH). The industry standard is to measure inductance at 1,000 Hz. As frequencies get higher there will be a rise in impedance above Re. This is because the voice coil is acting as an inductor. Consequently, the impedance of a speaker is not a fixed resistance, but can be represented as a curve that changes as the input frequency changes. Maximum impedance (Zmax) occurs at Fs. Q Parameters---------Qms, Qes, and Qts are measurements related to the control of a transducer's suspension when it reaches the resonant frequency (Fs). The suspension must prevent any lateral motion that might allow the voice coil and pole to touch (this would destroy the loudspeaker). The suspension must also act like a shock absorber. Qms is a measurement of the control coming from the speaker's mechanical suspension system (the surround and spider). View these components like springs. Qes is a measurement of the control coming from the speaker's electrical suspension system (the voice coil and magnet). Opposing forces from the mechanical and electrical suspensions act to absorb shock. Qts is called the 'Total Q' of the driver and is derived from an equation where Qes is multiplied by Qms and the result is divided by the sum of the same. As a general guideline, Qts of 0.4 or below indicates a transducer well suited to a vented enclosure. Qts between 0.4 and 0.7 indicates suitability for a sealed enclosure. Qts of 0.7 or above indicates suitability for free-air or infinite baffle applications. However, there are exceptions! The Eminence Kilomax 18 has a Qts of 0.56. This suggests a sealed enclosure, but in reality it works extremely well in a ported enclosure. Please consider all the parameters when selecting loudspeakers. If you are in any doubt, contact your Eminence representative for technical assistance Vas/Cms--------Vas represents the volume of air that when compressed to one cubic meter exerts the same force as the compliance (Cms) of the suspension in a particular speaker. Vas is one of the trickiest parameters to measure because air pressure changes relative to humidity and temperature

I'm on the look for someone local to turn their hatchback into an SPL machine this up coming comp season and take another run at it.....have an old box design I want to resurect

I wasn't overly impressed with the T2's.... with 2.25cf3 per sub(12") tuned at 35hz they hit 143db..it was somewheres around 37hz ..had them in for about a month..blew 3 of them and gave the last working one to a buddy...he blew it ..they did move alot of air and they hit really hard but I never did get the results I wanted from them on the really low stuff so they were abandoned I'm only 1db off with my Icon 10's in a 2.25cf3 31hz box at 25hz