I've got a set of cerwin vega m-100 towers and the mids/tweeters are starting to get a little old. these towers have always had relatively poor midrange, and i'd like to see what i can do to fix em up. I guess the requirement for the mids would be a sealed back driver so that i don't have to do too much work to the cabinets to make it sound decent.
The fun part about these speakers is that the mids/highs are way more sensitive than the woofers to begin with! (at least in their peaks)
Woofers are good to about a 96db1/w sensi, they cross at 500hz and 3500hz.
I sent an email to cerwin vega to get the old spec sheet on these monsterous towers and this is what they sent me back.
CERWIN VEGA M-100
DESCRIPTION: 15” 3-Way Loudspeaker
FREQUENCY RESPONSE: 30 Hz – 20 kHz
POWER HANDLING: 5/400 Watts RMS (Min/Max)
SENSITIVITY: 107dB (1 Watt @ 1 Meter)
NOMINAL IMPEDANCE: 4 Ohms
LF DRIVER: 15” Die-Cast Frame / 2” VC
MF DRIVER: 6” Cone (2)
HF DRIVER: 1” Phenolic Dome Horns (2)
PROTECTION: Circuit Breaker (HF & MF)
LEVEL CONTROLS: Tweeter and Midrange
CROSSOVER POINTS: 500/3500 Hz.
DIMENSIONS: 35.3” X 18” X 17.75” (H X W X D)
WEIGHT: 92 lbs.
As you see, there are Two tweeters, and two mids on these cabinets. I'm sure that the 107 sensi is a peak rating and i highly doubt its anywhere close to that. I have guesstimated the sensi to be about 96db and think this is a range to aim for.
Any suggestions on drivers?
The woofers are in perfect condition and i have no reason to replace them, they make it down to 40 with authority, and thats perfect for my subwoofer. I'm just absolutely tired of the muddy midrange and harsh highs, i would love to update them.
The fun part about these speakers is that the mids/highs are way more sensitive than the woofers to begin with! (at least in their peaks)
Woofers are good to about a 96db1/w sensi, they cross at 500hz and 3500hz.
I sent an email to cerwin vega to get the old spec sheet on these monsterous towers and this is what they sent me back.
CERWIN VEGA M-100
DESCRIPTION: 15” 3-Way Loudspeaker
FREQUENCY RESPONSE: 30 Hz – 20 kHz
POWER HANDLING: 5/400 Watts RMS (Min/Max)
SENSITIVITY: 107dB (1 Watt @ 1 Meter)
NOMINAL IMPEDANCE: 4 Ohms
LF DRIVER: 15” Die-Cast Frame / 2” VC
MF DRIVER: 6” Cone (2)
HF DRIVER: 1” Phenolic Dome Horns (2)
PROTECTION: Circuit Breaker (HF & MF)
LEVEL CONTROLS: Tweeter and Midrange
CROSSOVER POINTS: 500/3500 Hz.
DIMENSIONS: 35.3” X 18” X 17.75” (H X W X D)
WEIGHT: 92 lbs.
As you see, there are Two tweeters, and two mids on these cabinets. I'm sure that the 107 sensi is a peak rating and i highly doubt its anywhere close to that. I have guesstimated the sensi to be about 96db and think this is a range to aim for.
Any suggestions on drivers?
The woofers are in perfect condition and i have no reason to replace them, they make it down to 40 with authority, and thats perfect for my subwoofer. I'm just absolutely tired of the muddy midrange and harsh highs, i would love to update them.