X5M E70 - Subwoofer (Invisible but not Stealthbox)

[master1917]

Pulled my Audison box out from the spare wheel well and into the trunk. More presense, more bass, so better sound. If thats where it is going to stay, I would have gone with proper sized box and 12 inch.

Below I uploaded some photos of sub and amps. It is slim.
https://postimg.cc/gallery/dfpgk0fi/

Just saw a new JL sealed and slim dual 12 TW1 box with 600RMS
http://www.jlaudio.ca/cs212lg-tw1-ca...-systems-93317

[crystalworks]

Originally Posted by master1917

Pulled my Audison box out from the spare wheel well and into the trunk. More presense, more bass, so better sound. If thats where it is going to stay, I would have gone with proper sized box and 12 inch.

It's all about compromises with these sorts of things. Cargo space vs. audio reproduction. That is certainly a small box and sub combo with the Audison. That amp is capable of driving those 2 JL audio 12's cleanly. You'll also be able to move that frequency Xover down a bit as well. Looks like it's up ~100hrz. With the 2 12's you should be able to move it down to ~60hrz fairly easily.

Have you tried lowering that Xover to see if the sub/box will play it cleanly? Might give you a little more low end fill you're after.

[master1917]

Thank you for your guidance. No I havent moved the crossover yet since installed. I had it installed and set up in a shop and they strongly suggested not to touch anything ))) I am afraid to blow it up. I did move the gain from 3/11 to 5/11 though soon after install and it seems ok. Hiw can I safely calibrate these things?
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[master1917]

In addition, I am now not 100% sure how to interpret the power of my Rockford Fosgate R1200 1D amp. Officially it is 1200 W RMS, but @1 OM and it drops with more impedance as follows. So is it 1200 W? Its birthsert shows 1300 RMS test. Whats rhe Omage adjustment and true power I am feeding to my Audison APBX 10? Both devices' specs are below.

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Rockford Amp's specs are below


CEA-2006 Compliant

CEA-2006 Power Rating
400W x 1 @ 4Ω
≤1.0% THD+N

Number of Channels

1

Total Power*
(Sum of Rated Power)

1200 Watts RMS

Rated Power*
(RMS Continuous Power)

400 Watts x 1 @ 4-Ohm*
800 Watts x 1 @ 2-Ohm*
1200 Watts x 1 @ 1-Ohm

Dynamic Power*
(PVC/PowerCube®)

499 Watts x 1 @ 4-Ohms 0° Res*
898 Watts x 1 @ 2-Ohms 0° Res*
1,400 Watts x 1 @ 1-Ohm 0° Res

Bridgeable

No

Frequency Response

20Hz to 250Hz +/-1dB

Input Sensitivity

150 mV to 4 V

Circuit Topology Class

Class D

Efficiency*(average)

85% @ 4-Ohm*
85% @ 2-Ohm*
80% @ 1-Ohm

Total Harmonic Distortion*(THD+Noise)

4-Ohm:*<1.0%*
2-Ohm:*<1.0%*
1-Ohm:*<1.0%

Signal Input

Low Level:*1 RCA Pair

Signal Output

Low Level:*1 RCA Pair

Tone Controls

0dB to +18dB @ 45Hz

Crossover Controls

Low-Pass:*Variable 50Hz - 500Hz @ 12dB/Octave*
Infrasonic:

Remote Controls

Punch Level Control*
(when connected, is linked to "gain control" to provide remote output level)

Visual Indicators

Power*
Protect

Power Wire Gauge

4 AWG

Power Input Connector

Block

Speaker Wire Gauge

12 AWG

Speaker Output Connector

Block

Cooling

Convection

Heatsink

Operating Voltage

9 - 16 VDC

Recommended Fuse*
(not included)

150 A

Average Current Draw*(13.8V Music)

55 A

Max. Current Draw*(13.8V Sinewave)

110 A

Suggested Alternator

100 A

Dimensional Diagram

Dimensions*(H x W x D)

1.97" x 6.77" x 11.06"*
(5cm x 17.20cm x 28.10cm)

Shipping Weight

7.825 Lbs. (7.82 Kg)

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Audison sub Specs are below

CompREFLEX SUB BOXSize250 mm (10”)Power Handling400 W Continuous Power
800 W Peak PowerImpedance4 Ω + 4 ΩSub box size mm (in.)472 (18.58) x 334 (13.15) x 120 (4.72)MagnetHigh density flux ferriteConeCotton-Fibre pressed paperWeight of one component kg (lb)8,63 (19.03)

[crystalworks]

^ I looked up the amp's specs when you posted the pictures. I doubt that Audison sub is a 1ohm sub. It's possible that it's a 4ohm sub and is only getting 400w... which is probably fine for that sub anyway. More might overdrive it and risk damaging it. That JL Audio box has an impedance (resistance load) of 2ohms and would net 600w RMS which would be almost perfect for that setup.


If you are unfamiliar with crossover settings you might want to leave it as is. I'm assuming the shop that installed it is competent at tuning the amp and probably has the optimum setting for that sub already dialed in.

[master1917]

Thank you, yes Audison is 4 Ohm. So the 1200 RMS output is not relevant here? This means my sub and amp power ratings match in this case?

Power Handling400 W Continuous Power
800 W Peak PowerImpedance4 Ω + 4 ΩSub box size mm (in.)472 (18.58) x 334 (13.15) x 120 (4.72)MagnetHigh density flux ferriteConeCotton-Fibre pressed paperWeight

[crystalworks]

Originally Posted by master1917

Thank you, yes Audison is 4 Ohm. So the 1200 RMS output is not relevant here? This means my sub and amp power ratings match in this case?

Power Handling400 W Continuous Power
800 W Peak PowerImpedance4 Ω + 4 ΩSub box size mm (in.)472 (18.58) x 334 (13.15) x 120 (4.72)MagnetHigh density flux ferriteConeCotton-Fibre pressed paperWeight

Correct. Your amp at 4ohm load (your sub's impedance) is giving it 400w(ish) RMS. 1200w is only possible at 1ohm (probably over rated a touch too). I could not find your sub's specs but it's probably about 400w and so your amp is matched well with it.



The two JL Audio subs are wired together in parallel I'm guessing to provide a 2ohm load to the amplifier which in your case would be 800w RMS with that Rockford according to your spec sheet. I'm assuming the JL subs are 4ohm drivers. I put 600w in my previous reply, but your spec sheet shows 800w RMS at 2ohm.

[master1917]

Thank you! Clear now. Audison sub link is here. It is 4 ohm
https://www.audison.eu/products/apbx-10-ds/

Can 2 separate boxes connected in parallel?