Infinity Reference 311A Review

Wed, 08 Jul 2009 05:23:42 +0000

The Infinity Reference 311A is a mono subwoofer amplifier that is rated at 116 watts RMS @ 4 ohms (312 watts RMS x 1 @ 2 ohms). Infinity’s Dynamic Bass Optimizer (DBO) circuit matches variable bass boost with a variable subsonic filter to enable low frequency fine-tuning while still providing protection for your speaker. Other features include two sets of parallel output terminals for easy connection of multiple subwoofers, and an optional remote level control.

Unboxing the 311A, you’ll see accessories such as a patch cord, a power cable, a fuse, a grounding cable and a turn-on lead. In fact, the only thing not included are the speaker wires itself.

The 311A powered (with ease) almost everything that we paired it with—2 Rockford Fosgate 10″ Stage 1s and 2 12″ P3s, a Kenwood 10″ in a ported box, and a Kicker 10″ CompVR. Most of the time our gain was only set to -3 and it already rattled the mirrors. We could not even get the clip light to blink when we cranked it up. We noticed that this amplifier is efficient in delivering volume with less power.

As this is a semi-old model, the sound is actually still up par with today’s current amplifiers. RTA analysis measured lows of 19 Hz and highs of up to 280 Hz. This is a Reference series so this used to be on top of Infinity’s line-up.

Installation was a breeze, so long as you have some experience with amps and subs.

Other Specifications

Frequency Response	17 Hz – 302 Hz
Signal to Noise Ratio	81 dB
THD @ RMS Power	1%
Input Voltage	14.4 v
Amplifier Class	AB
Bass Boost	12 dB
Bass Boost Frequency	20 – 80 Hz
Width	12″
Depth	11.44″
Height	2.69″

Infinity Reference 311A top

Infinity Reference 311A right

Infinity Reference 311A left

Infinity Reference 9612i Review

Wed, 24 Jun 2009 02:31:39 +0000

6″ x 9″ two-way loudspeaker

I have been trying to search for a review on these 6x9s for a long time now; most of the stores that carry these do not have user reviews. Yes, I know the REF9612 has been discontinued, but these used to sell really well. Currently, the REF9632CF and the REF9633CF are the 6x9s offered by Infinity.

Still looking for that review…

Here’s from a buyer at Amazon.com, it may not be much but you still might pick-up a thing or two about what this guy—a certain Max Xiong from Denver said.

“I replaced my old and I mean “OLD” Bose factory rear 6X9 speakers. They were the paper type and had been sitting in the sun for like ages and the paper had seperated from the middle of the speaker. After replacing with the Infinity Reference 9612I OMG!!! it was clean, crisp and clear. No distortion of any kind even turning up to volume to max. The vehicle I have came with a factory AMP of 240 watts so It handle the new speaker perfectly. No complaints here… For the price, these are a STEAL…”

If there’s anyone else who knows of a good review for this product, please send them in; a link or your own review will do.

Specs

Woofer	Plus One woofer cones
Tweeter	Edge-driven silk dome
Warranty	1 year
Power Handling, RMS	100 Watts
Power Handling, Peak	300 Watts
Sensitivity	92dB
Frequency Response	46Hz – 21kHz
Mounting Depth	3″
Impedance	4 Ohms

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Infinity Reference 9612i

Car Audio Buff » Infinity

Infinity Reference 311A Review

Infinity Reference 9612i Review