non built-in amplifier cd receivers
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=32595
Printed Date: May 05, 2025 at 10:20 AM
Topic: non built-in amplifier cd receivers
Posted By: 2old4gamez
Subject: non built-in amplifier cd receivers
Date Posted: May 23, 2004 at 6:03 AM
im new to the boards, but i have been peeping the dicussions for some time now...what i wanted to know is there any limit as to how much power u can send to a receiver that requires an external amp for operation?
Replies:
Posted By: shane7643701
Date Posted: May 23, 2004 at 7:48 AM
what do you mean sending power to the reciever? as for the power, I would think it would have to be 12volt, the only difference in the recievers is that ones without a built in amp wont have any sound without an external amp but I think its still a 12 volt power
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Posted By: DYohn
Date Posted: May 23, 2004 at 10:04 AM
I think what he's asking is there any limit to the amplifier size you can connect to a HU, and if so that answer is no. ------------- Support the12volt.com
Posted By: Alpine Guy
Date Posted: May 23, 2004 at 10:30 AM
Why yes, there would be an amp limit, Sony, Lanzar, Pyramid, Lagacy, and a few others will inadvertantly blow up your cd player  . haha naw. But if your talking about connection of your receiver to a power source. no not really. it will suck what it needs, just be shure its a 12 volt source. Connection to the factory harness via an adaptor is perfectly fine. ------------- 2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.
Posted By: 2old4gamez
Date Posted: May 24, 2004 at 1:50 AM
sorry about the misdirection i lead some of u to....but dyohn hit it on the nose as the answer to my question...thanks....and by the way, did any of u hear about the new panasonic cd receiver that is supposely pushing on 60X4 RMS, 70 peak.....if so, how much truth do you suspect in that.
Posted By: stevdart
Date Posted: May 24, 2004 at 7:58 AM
The rule is: RMS = 1/2 Peak...so if peak is 70 then RMS is 35. Numbers are there to sell the product. Those like yourself who do their homework first will find the true numbers hidden in there somewhere.
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: DYohn
Date Posted: May 24, 2004 at 8:22 AM
Actually stevedart, the new T-class amps do peak out at just above RMS, which I know defies the true definition of "RMS" but they are using the term to mean max output while still meeting listed distortion specs. Those little digital amps are pretty cool, actually, even if their sound quality is a bit thin... The Panasonic ratings are accurate. ------------- Support the12volt.com
Posted By: haemphyst
Date Posted: May 24, 2004 at 10:12 AM
additionally, DYohn, they new HUs from panasonic also have a switching power supply inside just for the amplifier section... they really do make that kind of power, and, from what I heard at the CES, the TriPath amps in these units are WAY better sounding than the chip output devices that used to be included in a head unit. still marginal sounding, but better... NOT audiophile stuff at all. again, just my $.02
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: DYohn
Date Posted: May 24, 2004 at 10:31 AM
Yes, that's a big improvement in HU technology. Apparently Alpine and Blaupunkt have also signed deals with Tripath, and there are several stand-alone amps coming out of Taiwan now with the Class T topology. Very high sampling rates (1.5 Mhz and up) make it possible for the high power utilization and high output levels before clipping. Look for much smaller frame sizes for a given power rating. Tripath has a chip that outputs 1000 watts with <0.1% THD and <0.1% IMD that is 85% (85%!!) power efficient. Wow. And they are working on higher outputs. I have a couple of the new MA Audio Class T amps on the test bench now that should get put through their paces this week. Digital still cannot compare to true analog for SQ, but they are getting closer all the time. ------------- Support the12volt.com
Posted By: fuseblower
Date Posted: May 24, 2004 at 11:06 AM
DYohn, How good are MA products. I have been running a 800 watt class T amp for over a year and it has not over heated once. The amp has been test and runs a little of 900 before clipping. I am looking at getting another amp but don't believe in using what everyone else is using... Let me know what you think about the MA amps when you are done testing.
Posted By: DYohn
Date Posted: May 24, 2004 at 11:52 AM
I've always liked MA Audio gear. Great sound for the price, IMO. ------------- Support the12volt.com
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