Carrera Mike

Does anyone knows what the continuous output power of the Porsche factory CR-210 radio cassette?

Thanks~Mike

OldGuy

You just never stop learning on this site!! I did
not even know the 210 had a Rear Main Seal.
I thought that was only on 996's!!
Does it leak??
sorry Mike I could not resist.

viperbob

RMS - Root Mean Squared. Sorry, but that is all I can help with..

OldGuy

I actually know that as an electrical engineer but I dont
know what the RMS power output of that radio is.
its just that with all the 996 boys so nervous about the
RMS issue I could not help myself!!

Mike Try this it may be here somewhere or the link is there:

http://www.beckerautosound.com/

Carrera GT

It's less than 25W. I'd estimate around 8W RMS with sufferable distortion assuming it has no cooling fan. If the CR210 (and I only just got rid of mine) has no fan, it's certainly less than about 12W RMS per channel simply because heat is the limiting factor in a single DIN enclosure.

http://www.beckerautosound.com/

graham_mitchell

actually, you can't specify power output without the impedance of the load. Are you driving a 2, 4, 6 or 8 ohm load?

Carrera Mike

Carrera GT, Thanks. I was hoping that it is around 20~22W, but what you said about the absence of cooling fan makes sense. My unit on the truck is a double DIN with large fan is a 22W.

Grahham, I'm thinking of using regular component speakers which are normally available in 4 ohms.

Old Guy, no worries, I always have fun with this site too.

graham_mitchell

It seems to be rated at 15W per channel, into 4 ohm (I assume)

Whether it is 10W or 15W is insignificant - the difference is barely audible at ~1.5dB

The absolute SPLs you can achieve with this unit will depend as much on the sensitivity of the speakers as the power of the amp.

Why do you ask the original question?

Carrera Mike

Graham, I'm debating between two diff comp speakers.

One is rated at:
60W nominal/250W max/sensitivity 90db/Freq response 25~32000hz

and the other:
50W nominal/100 W max/sensitivity 87db/Freq Response 61~20000hz.

Both with impedance of 4 ohms.

Which one will produce louder with less distortion if run with the CR-210(as you mentioned around 15W)(I know that there would be more factors than just the data above, i.e mat'l used)?

Thanks

graham_mitchell

Assuming that the two speakers present similar 'loads' to the amplifier, the distortion produced by the amplifier will be the same for both speakers at the same amplifier power setting.

However, in practice, the volume control on the amp will always be lower when driving the more sensitive speaker (90dB rated) i.e. driving an 87dB sensitivity speaker with 20W will sound as loud as driving a 90dB speaker with 10W.

Therefore, you will run out of power first with the 87dB speaker, and you will achieve a higher max volume for the same amount of distortion with the 90dB speaker. Does that make sense?

If high volumes are your priority, then the 90dB speaker should be more suitable. If you don't need the higher volumes, then go for the better sounding speaker (which will be a factor of frequency response flatness, waterfall plot, distortion, etc)

To make matters more complicated, some speakers are rated more conservatively than others. You are always well advised to listen to both speakers back to back if at all possible, to compare sound quality and power handling.

Carrera Mike

Thanks Graham. I just thought at first that the higher wattage spkr would be harder for the CR-210 to drive therefore more distorsion at higher volume.

I think I'm gona go for the one with 60W nominal/250W max/sensitivity 90db/Freq response 25~32000hz. Basing on your explanation and looking at the specs of that spkr, it has all the advantage. It also has rubber surrounds vice foam for the other one. It's actually Pioneer TS-C160R. It matches my beige interior too Plus the silver touch which my MY02 shifter has.
This are actually 6.5" which perfectly fit the door panel holes(made for the OEM 5.5" spkrs) Their frame is smaller which means more actual cone surface area. They're priced $299/pair from local audio place here, but when I learned that they have "Price Matching Policy", I brought an internet add and they took it
Thanks again to all

Edward

Mike,

Pay heed to what Graham has mentioned...it's right on. And if I may further add complications to your comparison, what audio manufacturers rate their components on is about as reliable as how car makers rate their performance. Even with two speaker manufacturer's share the "same specs," they will sound different as each one's design, materials, and manufacture will affect WHICH frequencies are more prevalent; this is what specs on paper cannot do: describe "how" a speaker will sound. Add to this all the other variables such as how they will be mounted and the enclosure volume, and you've got a veritable mess! Though not a guarantee, listen before you buy; and a return policy is, IMO, mandatory. Good luck

Edward

Carrera Mike

Just finished installing the Aramid Fiber cone speakers(TS-C160R/pictured on my other post above). The head unit is still the Becker CR-210. What a difference do the new speakers make!!. After installed the passenger side, I compared them with the OEM on the driver's side door, distortion started on the OEM halfway the volume of what the aftermarket can take. Bass is more pronounced and with more lower freq. Highs are more crisp from the liquid cooled voice coils of the tweeters. I'm happy with the upgrade! The 6.5" spkrs though added about .5 lbs

Just to update. Thank to all

Jack Ennuste

Graham made very detailed analysis and He is absolutely correct in this calculations. I really believe that std main unit is insufficient to produce good quality sound pressure. 12 volts is just not enough for end transistors. Most critical fraquency range is low and mid-bass where most power is needed. I really recommend to install at least small 2-channel or 4-channel amp under the passenger seat or in the trunk.

leeham

Mike,

Were your factory speakers the "10 speaker hi-fi option" or the four speaker setup?

I have the CDR-210 with the factory Nokia Digital Sound Processing, and I'm pretty happy with it. I bought the DSP from ebay for $149 and installed it myself in about 10 minutes. It's a direct swap with the factory amp under the passenger seat, and the key panel replaces the little tray in the driver side door. Wiring for this panel is installeld at the factory since this item was originally a dealer-installed option. This may be an option worth considering for a cheap upgrade that's acceptable for concours. It seems to me that the DSP amp output is higher than stock, but I'm not sure. I know for certain that it's louder and has crisper bass. Note that you must have the 10 speaker system to install the DSP, though. The wiring for the keypad is not present with the 4 speaker system.