I bought a Jamo C605 floor stander rated at 6 ohm at 89db sensitivity with frequency range (Hz) from 37-20000 and I'm planning to use a Melody brand H88S tube integrated amp with output impedance at 4 ohm or 8 ohm. I shall be grateful if you could tell me which output impedance I should set at and is this setup compatible at all?  I heard a 6 ohm speaker would create more heat to the amp thus shorten the amp's lifespan; will this happen to my setup? The amp is rated at 50W+50W Class AB1 with input impedance of 250k Ohm and input sensitivity of 380 mV, THD 1%, S/N ratio≧90dB. AC power is 220V+-5%, 50Hz-60Hz, Hong Kong use 220V.  Many thanks for your help in advance.Dennis

not 550 watt,,250 x 2 ,,

• RMS Power Range : 250-500 Watts
• Number Of Channels: 2
• Maximum Power: 1000 Watts
• Low Frequency response: 10 Hz
• High Frequency Response: 40000 Hz
• Built In Crossovers: Yes
• Channel Separation: Yes

• 2-Channel Class-A/B Amplifier
• RMS Power (4 ohms): 250 watts x 2 chan.
• RMS Power (2 ohms): 375 watts x 2 chan.
• Bridged RMS Power: 500 watts x 1 chan.
• Min. Impedance Unbridged: 2 ohms
• Min. Impedance Bridged: 4 ohms
• Brushed Aluminum Chassis
• Top Mount Controls with Blue Illumination
• Cooling Fan
• Chrome DUB Fan Grille
• Glass Epoxy Circuit Board
• PWM MOSFET Power Supply
• THD: 0.02%
• S/N Ratio: 95 dB
• Input Sensitivity: 200mV - 4V
• Frequency Response: 10 Hz - 40 kHz
• Variable 18 dB/Oct. Hi-Pass / Low-Pass Crossover: 50 - 250 Hz
• Bass Boost: On/Off 12 dB
• 4-Way Protecion: Thermal, Short Circuit, Overload, and DC Offset
• Dimensions: 8-1/4" W x 2-1/8" H x 10-3/4" L

• Authorized Internet Dealer

Audiobahn DUB2502 2 Channel 250W 2 Class Amplifier at Onlinecarstereo com

http://www.audiobahn.com/index.php/help/tech-support/manuals/category/1-amplifiers

If your amp states that it will support a range of 6 - 16 ohms, an 8 Ohm speaker will work fine on it. If the speakers you hook up to it are lower than 6 ohms, it may work until you turn it up, then it will either shut down or burn out the finals. If you hook up a speaker that has a higher than 16 ohm, it will not get very loud, and it shouldn't hurt the amp.

It depends on whether you have the M2150, A2150, or E2150.

M2150 Class A/B Two-Channel Full-Range Amplifier Specifications:
Rated Power 14.4 V Stereo: 70 W RMS x 2 @ 4 ohm, 110 W RMS x 2 @ 2 ohm
Rated Power 14.4 V Bridged: 140 W RMS x 1 @ 8 ohm, 220 W RMS x 1 @ 4 ohm
Rated Power 12.5 V Stereo: 45W RMS x 2 @ 4 ohm, 75W RMS x 2 @ 2 ohm
Rated Power 12.5 V Bridged: 90W RMS x 1 @ 8 ohm, 150W RMS x 1 @ 4 ohm
THD at Rated Power: 12.5V: <0.08% THD, 20Hz-20kHz, 14.4V: <1% THD, 20Hz-20kHz
S/N Ratio: >104 dB referred to rated power (A-weighted, 20Hz-20kHz noise bandwidth)
Frequency Response: 10 Hz-25 kHz (+0, -1dB)
Damping Factor: >200 @ 4 ohm per ch. / 50 Hz, >100 @ 2 ohm per ch. / 50 Hz
Input Range: 200mV, 8V RMS

E2150 Class A/B Two-Channel Full-Range Amplifier Specifications:
Rated Power 12.5 V Stereo: 45W RMS x 2 @ 4 ohm, 75W RMS x 2 @ 2 ohm
Rated Power 12.5 V Bridged: 90W RMS x 1 @ 8 ohm, 150W RMS x 1 @ 4 ohm
THD at Rated Power: <0.08% @ 4 ohm 20Hz-20kHz
S/N Ratio: >104 dB referred to rated power (A-weighted, 20Hz-20kHz noise bandwidth)
Frequency Response: 10Hz-25kHz (+0, -1dB)
Damping Factor: >200 @ 4 ohm per ch. / 50 Hz, >100 @ 2 ohm per ch. / 50 Hz
Input Range: 200mV, 8V RMS

A2150 Class A/B Two-Channel Amplifier Specifications:
Rated Power 12.5 V Stereo: 45W RMS x 2 @ 4 ohm, 75W RMS x 2 @ 2 ohm
Rated Power 12.5 V Bridged: 150W RMS x 1 @ 4 ohm
THD at Rated Power: <1% @ 4 ohm 20Hz-20kHz
S/N Ratio: >104 dB referred to rated power (A-weighted, 20Hz-20kHz noise bandwidth)
Frequency Response: 10Hz-25kHz (+0, -1dB)
Damping Factor: >200 @ 4 ohm per ch. / 50 Hz, >100 @ 2 ohm per ch. / 50 Hz
Input Range: 200mV, 8V RMS

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Sure. Specs are listed below. I think it's designed for regular 2-channel input, isn't it?



Front Channels: 100 W RMS x 2 @ 1.5 ohm-4 ohm (11V-14.5V)

Rear Channels: 25 W RMS x 2 @ 1.5 ohm-4 ohm(11V-14.5V)

Subwoofer Channel: 250 W RMS @ 1.5 ohm-4 ohm (11V-14.5V)

THD at Rated Power: <0.03% @ 4 ohm (F&R), <0.05% @ 4 ohm (Sub)

S/N Ratio (F&R): >108.5 dB below rated power S/N Ratio (Sub): >95 dB below rated power

Frequency Response (front and rear): 5 Hz-30 KHz (+0, -1dB)

Frequency Response (sub channel): 5 Hz-500 Hz (+0, -1dB)

Damping Factor (front and rear): >200 @ 4 ohm/50 Hz

Damping Factor (sub channel): >500 @ 4 ohm/50 Hz

Input Range: switchable from 200mV-2V RMS to 800mV-8V RMS

Differential-Balanced Input Topology: (3 pairs of inputs)

Front Crossover: fully-variable (50 Hz-5 KHz), selectable- slope BP or HP (12 or 24 dB per octave)

Rear Crossover: fully-variable (50 Hz-5 KHz), selectable- slope HP (12 or 24 dB per octave)

Sub Crossover: fully-variable (40-200 Hz), selectable-slope LP (12 or 24 dB per octave)

Preamp Output: 2-channel (full-range or LP)

Bass EQ: Variable boost up to 15db

Infrasonic Filter: defeatable 24dB/octave at 30 Hz

Left minus Right Ambience Circuit: ambient effect for rear channels

Front and rear speaker output connections: accept up to 8ga. wire

Dual mono subwoofer output connections: accept up to 8ga. wire

+12V and Ground connections: accept up to 4ga. Wire

Dimensions: 19.7"L x 9.25"W x 2.36"H

this is actually the product description for your speaker


Product Description
Front
Speaker Unit: 1inch +6.5inch *2+8inch
Power: 10-100W
Sensitivity: 88 dB
Impedance: 4 ohm
Frequency Response: 45-20K Hz
Production Size: (H*W*D) 1087*210*336mm
Package Size: (H*W*D) 1162*500*400mm

CENTRE
Speaker Unit: 1inch +4inch *2
Power: 10-60W
Sensitivity: 86 dB
Impedance: 8 ohm
Frequency Response: 75-20K Hz
Production Size: (H*W*D) 160*500*179mm

SURROUND
Speaker Unit: 1inch +4inch
Power: 10-60W
Sensitivity: 85dB
Impedance: 8 ohm
Frequency Response: 75-20K Hz
Production Size: (H*W*D) 225*160*158mm
Package Size: (H*W*D) 550*273*415mm /3PCS

ACTIVE SUBWOOFER
Speaker Unit: 10inch
Impedance: 8 ohm
Crossover Point Control
Handling Power: 120W
Production Size: (H*W*D) 405*328*350mm
Package Size: (H*W*D) 465*330*465mm

bad transformer. A $10 part at most electronic stores. U fried it when you dropped it. Happens all the time.

I have the following specs for you
Basically 150watts per channel using two channels , or 75watts using all four
Here goes:

• 4 Channel Mosfet Amplifier
• Advanced Overload and Thermal Protection
• Metal Film Capacitors/Resistors In Signal Path
• Frequency Response +/-1dB, 20Hz to 20 kHZ
• Signal to Noise Ratio (A-weighted) >100dB
• Max Continuous Bridged Power @ 1% THD 150 watts x 2 into 4 ohms @ 14.4 Vdc
• Max Continuous Power per Channel @ 1% THD 75 watts x 4 into 2 ohms @ 14.4 Vdc
• Nominal Continuous Power per Channel @ 1 % THD 35 Watts x 4 into 4 ohms @ 14.4 Vdc
• IASCA/USAC Power Rating 12 Watts x 4 into 4 ohms @ 12.5 Vdc
• Minimum Load when Bridged 2 Ohms
• Minimum Load per Channel 1 Ohm
• Input Signal Voltage Range 0.1 volts to 2 volts
• Crossover Type Resisitor Network, Linkwitz Riley,
• Highpass/Lowpass
• Crossover Slope 24 dB per octave
• Crossover Frequency Range 20-550Hz
• Factory Crossover Setting 85 Hz
• Auxilary Output Channels 2
• Auxilary Output Frequency Range Highpass or Lowpass, Opposite of Speaker Output
• Bass Boost 0- to +18dB @ 45 hZ
• Power Supply Voltage 10Vdc to 15.5Vdc
• Recommended Fuse 40 amp

Dimensions 12.25L x 9.25W x 2.10H

Do you have the crossover switched to "low pass"? and the frequency control below 80hz? Do you have the manual? If you need more help, post a comment and I can walk you thru it. Hope this helps

Most better low frequency speakers (woofers) measure about 6 ohms because the addition of crossover will bring the impedance up to 8 ohms. Even without the crossover, 6 ohms will not harm the amp or speakers

Alpine is just a better brand in general. I have the older MRV-1507, sounds GREAT, i have had friends who has had the Explode line, but it was always a temporary system until they got something better, like the alpine or kenwood.