# Need help picking out an amp.?

Alpine77
Posts:

**8**
Okay, so I have 2 12" Alpine Type R's (500w rms and 1500w peak) I have 1 Alpine 500w amp on each sub at the moment. I am looking for an affordable high powered amp to switch over too. I would like to buy 1 amp and hook both subs up to just the one amp. I have been looking for a new amp and have had some trouble trying to find one that will power them both really well. And another question they are dual voice coil subwoofers. With a new amp how would i want to hook them up? Thank you for all of your help.

Post edited by Alpine77 on

## Comments

46What's your budget?

Speakers:Polk SDA-1A

cd/dvd:Marantz DV6200(HDCD)

Amp: DUAL Audiophile Concept. (1992)

ICE:

Alpine CDA9887R

Audison LRX 1.1K

Audison LRX 4.5

Amega Q-Comp50

Amega Q-Comp60

Sub: Focal Utopia WX21 BE

Sub:? maybe 3 MM840.

Stinger HPI signal,power,speaker cables

846(2/2=1 Ohm)

I believe you have a couple of decent amps on the woofers now.

Are you sure you've hooked them up right?

I.e 8 Ohms insted of 2?

You need to have both voicecoils connected in some way so with two 4 ohm coils you only have two options...8 or 2 ohms

If the coils are in serial ( - to + and + to -) you'll get 8 ohms.In paralell (- to - and + to +) you'll get 2 ohms.

Now you can serial or paralell connect the two woofers into 4 or 1 Ohm

If your Alpines are rated 500W [email protected] Ohms and are stable in 2 Ohms,these amps would and should be more than good enough for your woofers.

In 2 Ohms the amps usually deliver twice the rated power than in 4 Ohms.

What type of Alpine amps do you have? The MRP's or the PDX's ?

None of the Alpine amps (MRP or PDX) are stable in 1 Ohm so if you want a monoamp that is,you need to take a look at these:

Ground Zero GZHA 1.1800DX2 1x1800W RMS @ 1 ohm

Ground Zero GZNA 1.2500DXII 1x2300W RMS @ 1 ohm

CADENCE ZRS-8000.D 1x2250W

Just to give you a few examples.

Speakers:Polk SDA-1A

cd/dvd:Marantz DV6200(HDCD)

Amp: DUAL Audiophile Concept. (1992)

ICE:

Alpine CDA9887R

Audison LRX 1.1K

Audison LRX 4.5

Amega Q-Comp50

Amega Q-Comp60

Sub: Focal Utopia WX21 BE

Sub:? maybe 3 MM840.

Stinger HPI signal,power,speaker cables

25683,517Carver TFM-55

NAD 1130 Pre-amp

Rega Planar 3 TT/Shelter 501 MkII

The Clamp

Revox A77 Mk IV Dolby reel to reel

Thorens TD160/Mission 774 arm/Stanton 881S Shibata

Nakamichi CR7 Cassette Deck

Rotel RCD-855 with modified tube output stage

Cambridge Audio DACmagic Plus

ADC Soundshaper 3 EQ

Ben's IC's

Nitty Gritty 1.5FI RCM

2561,457I man...I have two sony subs with a kenwood amp and i am very impressed with what they do...

Have you checked your cd player? I know that I had to turn my sensitivity up because my receiver didn't have a sub preamp it just had a regular preamp...

ReceiverHarman Kardon HK 3490

SpeakersPolk Audio Monitor 50s

SubwooferKlipsch KSW-100

CablesAudioQuest Rocket 33s 10ft

AudioQuest Optilink1 2m

AudioQuest Alpha-Snake 25ft Interconnect

AudioQuest HDMI-1 2m

Alienware X51 R2

PS4

Samsung Smart TV 40" 1080p 3D

46On your woofers you have four wire connections. + - and + -,if you run your speakerwires to just one pair of connections you'll only run one of the coils.

You need to hook up the second coil aswell.(as seen on this picture http://www.alpine-usa.com/product/view/swr-1243d )

Connect the wires from the amp to + and - on the left terminals of the woofer,and then connect the right terminals to the left terminals.+ on + and - on-.Now you have paralell connected the woofers and your amp will now have a 2 Ohm load.

As i said earlier..I do believe you have more than enough power with one amp to one woofer..If they are connected correctly.

Cheers.

Speakers:Polk SDA-1A

cd/dvd:Marantz DV6200(HDCD)

Amp: DUAL Audiophile Concept. (1992)

ICE:

Alpine CDA9887R

Audison LRX 1.1K

Audison LRX 4.5

Amega Q-Comp50

Amega Q-Comp60

Sub: Focal Utopia WX21 BE

Sub:? maybe 3 MM840.

Stinger HPI signal,power,speaker cables