The full video of the amp dyno test is on youtube now
Impressive!
Search found 257 matches
- Tue Dec 02, 2014 10:02 am
- Forum: Car Audio
- Topic: ZX1200ti "Off Road" Limited Edition Amp on the Amp Dyno
- Replies: 34
- Views: 19521
Re: MPS 2500
Sure enough after basic testing I pulled the PS caps. There was hardly any trace of electrolytic fluid under the caps. They were so clean I actually felt bad after pulling them. But better safe than sorry and at least I have perfect solder pads to work with. One of the endplate screws was so tight i...
MPS 2500
Finally I scored a nice old skool Phoenix Gold big rig MPS 2500 :D Dirty on the outside, but absolutely mint on the inside where it counts. I'm surprised it on only draws 1,2 amps of current idle. The rail voltages are nailed at only +-29V so this thing really wants to be loaded down to get the powa...
- Thu Oct 09, 2014 9:12 pm
- Forum: Car Audio
- Topic: -grey ms-2125- I FOUND IT!!!!
- Replies: 38
- Views: 18967
Re: my craigslist score today -grey ms-2125-
The problem is you can only put so many amps in a car. And even plenty amps in your car doesn't stop the craving..
Re: MPS 2220?
Whats up with that box? I have never seen anything like it.
- Tue Sep 30, 2014 6:56 pm
- Forum: Car Audio
- Topic: ZPA 0.3 bridged on 1 TI10d 4ohm
- Replies: 17
- Views: 6850
Re: ZPA 0.3 bridged on 1 TI10d 4ohm
You dont have to replace the 4700uF caps, but you HAVE TO replace the 2200uF caps! They are the leaky ones eating away the board. And eventually the amp will short out under the caps and make lots of smoke and fire. Looks like the soldering is incomplete in the second picture. Theres probably some s...
- Sat Sep 27, 2014 6:36 am
- Forum: Car Audio
- Topic: ZPA 0.3 bridged on 1 TI10d 4ohm
- Replies: 17
- Views: 6850
Re: ZPA 0.3 bridged on 1 TI10d 4ohm
If you snip some diodes off the amp then it will remain in high voltage mode even with a lower load than 4ohm bridged. If you do this then you run the risk of frying the amps power supply fets.
You might get away with 2ohms bridged however, if the sub is in a sealed box.
You might get away with 2ohms bridged however, if the sub is in a sealed box.
Re: Part #
PS caps: panasonic eeu fc1c822
- Fri Aug 29, 2014 10:06 pm
- Forum: Car Audio
- Topic: What's up with people these days?
- Replies: 11
- Views: 5219
Re: What's up with people these days?
"Cost over £1500 new back in 1995
One of 0nly 1500 hand made ltd edition run"
????
There were no LE MS275 I think.
One of 0nly 1500 hand made ltd edition run"
????
There were no LE MS275 I think.
- Thu Aug 21, 2014 10:15 pm
- Forum: Car Audio
- Topic: ZPA passive cooling
- Replies: 9
- Views: 4367
Re: ZPA passive cooling
Okay, this is just an idea I had in my head and a little bit of fun. I spent 2 minutes "photoshopping" this with windows Paint and it looks even better than I thought. I can't stop smiling :D I have always loved the PG combination of white and gold, and this is just GOLD, ahh! But in truth...
- Thu Aug 21, 2014 7:49 am
- Forum: Car Audio
- Topic: ZPA passive cooling
- Replies: 9
- Views: 4367
ZPA passive cooling
ZPA cooling fans are a bit noisy. It's not a big deal when you're cruising and the ZPAs are putting out mind-numbing crazy dBz. But in principal the cooling fans aren't in line with the high end sound quality design of ZPAs. I have a ZPA which will probably always decorate my garage wall and also po...
Re: ZPA0.3
I recapped this ZPA and gave it a little try. First thing I noticed is that the DC offset has changed from 11/15mV to about 30/50mV. This puzzles me, because I havent touched the bias pots. I did remove and reinstall the heat sinks. Also the fans werent connected when I measured DC offset. SO maybe ...
- Sun Aug 10, 2014 12:18 am
- Forum: Car Audio
- Topic: Zero point vs ti
- Replies: 11
- Views: 4301
Re: Zero point vs ti
I've always thought ZXti amps are a bit cheesy for having ZeroPoint printed on their boards. I don't know of any ZeroPoint -kungfu incorporated in these amps and they sure can't handle no zero point anything ohm loads like ZPA:s. Hence their name. What I mean is ZXti:s are great amps in their own ri...
- Tue Aug 05, 2014 4:45 am
- Forum: Car Audio
- Topic: Ti500.4 vs Zx450v2
- Replies: 14
- Views: 5305
Re: Ti500.4 vs Zx450v2
The input voltage range 10,5 to 15V refers to the power input voltage, not signal.
Re: Octane LE
Are those extra rail caps in the middle? The wiring suggests they are.
Re: ZPA0.3
Great info, thanks Eric! These ZPA amps confuse me, especially the power supply design. I wish I had the schematics. 30V RMS output capability is in line with the 200W @4ohm stereo specs you see here and there. But this means the rail voltage is at least 43V, yet the amp has 35V rail caps. Duh! All ...
Re: ZPA0.3
Thanks for the concern and all the info, zeropoint! I take precautions when powering up an amp with old caps. I have an amp meter with a 10A fuse in it inline with the amp. This way I can see if it draws too much current and disconnect it. Also i use a tiny 12V 1,5Ah hand drill battery for powering ...
ZPA0.3
I scored a zpa0.3 for a good price. Its a bit banged up and rusty on the outside and the plexi is rubbish, of course. The insides are dusty but otherwise perfect. Main thing is no-one has tampered with it before me :clap: I powered the amp up to see it works. Idle current is 1,75A and DC offset 11mV...
- Sun Jul 06, 2014 10:10 pm
- Forum: Car Audio
- Topic: 10" pg rsdc d2 use two or three?
- Replies: 20
- Views: 5766
Re: 10" pg rsdc d2 use two or three?
Go for it. Install all three woofers and wire them (coils in series for 4ohm) in parallel for a 1,33 ohm final load and then bridge that. It should be fine. Woofers in a sealed box will have a higher impedance than nominal. In this case about 5 ohm minimum. And anyways an elite can handle just about...
- Mon May 12, 2014 9:11 pm
- Forum: Car Audio
- Topic: I need help for a port length
- Replies: 4
- Views: 3587
Re: I need help for a port length
According to the owners manual youre going to need two 4inch diameter ports for your box. One six inch diameter port would do the trick too. Lenght of ports should be 12 inches (each).
Personally I would use shorter ports, maybe 9 to 10 inches to get the tuning frequency a bit higher.
Personally I would use shorter ports, maybe 9 to 10 inches to get the tuning frequency a bit higher.
- Wed Apr 30, 2014 11:30 pm
- Forum: Car Audio
- Topic: sub box question?
- Replies: 5
- Views: 2760
Re: sub box question?
Adding two separating walls is worth the trouble, they will make the box much stiffer. If the woofers are wired in series, chances are they will have uneven output, so separate chambers is a good idea. I'm assuming the woofers are dual 2ohm. I would wire the coils in series and the woofers in parall...
- Tue Apr 29, 2014 11:14 pm
- Forum: Car Audio
- Topic: Original caps.. ??
- Replies: 20
- Views: 6897
Re: Original caps.. ??
And also you cannot substitute an amps power supply or rail caps. If you remove the power supply caps, the amp might work a while at low power levels. But the power supply would be starved for current because it would be pulling high frequency current through the filtering coil. And a coil acts as a...
- Sun Apr 27, 2014 10:24 pm
- Forum: Car Audio
- Topic: @KirGhiz and Bassy songs
- Replies: 7
- Views: 3527
Re: @KirGhiz and Bassy songs
Pendulum
Knife Party
-to name a few
I like checking out new stuff on youtube, especially now after finishing my new HT subwoofers
Knife Party
-to name a few
I like checking out new stuff on youtube, especially now after finishing my new HT subwoofers
Re: Mac Amps
Freaky
- Wed Apr 09, 2014 9:06 pm
- Forum: Car Audio
- Topic: Exhaust Manifold Gasket LEAK?
- Replies: 3
- Views: 2019
Re: Exhaust Manifold Gasket LEAK?
Open the pod bay door please, Hal.