Quote:
Originally Posted by Technic
I would assume that if you are talking about the Alpine OEM retrofit amp your sound system is the OEM "Stereo System" (no OEM amp).
According to the base OEM "Stereo System" description, the 6.5" underseat OEM woofers are connected in parallel with the front OEM mids. To avoid causing problems of impedance to the OEM HU, a capacitor was installed inline with the OEM mid.
Because the OEM HU per channel power output is 15W at 4 ohms, that tells me that each front mid and the underseat woofers are 4 ohms, as connecting them in parallel will yield an effective impedance of 2 ohms without that capacitor. That means that the OEM HU is not 2 ohms stable and thus the purpose of the protecting capacitors to keep the impedance the the OEM HU "sees" at 4 ohms.
Therefore, if you are planning to swap the OEM woofers with the SWS-8 you will need to get the 4 ohms version of the SWS-8 to properly match the new Alpine amp output.
On a side note, I would like to know how this Alpine OEM amp retrofit kit compare in price with a Blaupunkt THA555, the PnP harness and a pair - or two- of OEM Logic7 mid and tweeter sets. I think that the THA555 is a much better amp in a Pnp configuration than that Alpine, as the THA555 is a 5-channel amp with plenty of power for the whole system (front, rear, underseat woofers) than the Alpine that only powers the front and the underseat woofers. I doubt that the Alpine amp puts out as much power as the THA555 as well.  |
Ok, thank you for the info. As for retrofit kit, a have alredy installed it, and in comparison with stock it sounds much better (pure clean and power ok sound), but as for stock subs, they really can not coupe with increased power output, so thats why they also have to be replaced.
By the way, will SWS-8 be equal increase in terms of: stock mid-bass -retrofit kit mid-bass, stock subs - SWS-8 subs? Or they will outperform (sound louder then any other part of the system)?
And as for impendance, it is all clear now - 4ohms.
Concerning the comparison of retrofit kit with the variant you proposed - frankly cant say anything, cause iam not really an audio enthusiast, just a simple user...