View Full Version : SOLD/CLOSED RD Audio 3250 3k+ RMS

05-10-2011, 08:11 PM
1. Product:

RD Audio 3250v2

2. Specs:

Digital class-D linkable mono block amplifier
MOSFET PWM power supply
Daisy-chain through output RCA
Double sided through hole epoxy PCB
Stable into 1 ohm and 2 ohm parallel amplifier connection availability
24dB/oct variable crossover
Variable subsonic filter
Variable bass boost
Variable low pass filter
Variable phase shift
Efficiency : 86% @ 4 ohm, at 100Hz
Multi-way protection circuitry (Thermal/over current/speaker short/speaker dc protection)
RCA line input
Tested voltage & THD : 14.4V & less than 1% THD
Operating voltage : DC 10V~18V power input- 2008 models

RMS power, 2 ohm linkable/dual mono 5600w x 1ch
RMS power, 0.875 ohm mono 3750w x1ch
RMS power, 1 ohm mono 3000w x1ch
RMS power, 2 ohm mono 1500w x1ch
RMS power, 4 ohm mono 750w x1ch
Signal to Noise Ratio >100dB
Low pass frequency crossover 35Hz~300Hz
Subsonic filter 10Hz~60Hz
Bass boost @ 45Hz 0~18dB
Phase shift control 0~180 degree
Frequency response 10Hz~350Hz (+/- 1dB) T.H.D @ 4 ohm <0.1% Efficiency @ 4 ohm 86%
Fuse rating 300A(external type fuse – not included)
Input Sensitivity 200mV to 6V (+/- 5%)
Dimensions 222(W) x 52(H) x 590(L)mm

3. Description/Condition:

It is mint now, it was blown. Repaired by 807tubenut on here. He beefed everything up that RD half assed on. tubenut is now an authorized crescendo dealer and his website is ampenstein.com Amp is in full working order, i took a video of it running 2 of my 4 subs (at 1 ohm). One of the mounting tabs is bent upward, you could probably put it in a vice or somethin and flatten it.

He is warrantying for 1 year, and the warranty is transferrable (you just have to register the serial number with him and the warranty stickers are still on there)

Here is a thread with pics on what he did:

RD3250V2 repair - Car Stereo Classifieds (http://www.carstereoclassifieds.org/forum/showthread.php?t=364)

4. Price:

430 shipped

5. Pictures:







YouTube - RD 3250v2 Repair by 807tubenut (ampenstein.com) (http://www.youtube.com/watch?v=I_pMf6-n-KE)

05-10-2011, 08:46 PM
I do have the bass knob, not sure if it works. It'll be included but you need to get a 5-pin phone cord.

05-10-2011, 11:11 PM
shoot me an email at [email protected] and we'll discuss this.


05-11-2011, 12:30 AM
Email sent.

05-12-2011, 12:41 AM

05-13-2011, 03:09 PM

05-13-2011, 04:44 PM