300 wpc stereo amp suggestions?

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03-21-2010, 05:55 PM
LuvOldJBL

300 wpc stereo amp suggestions?

I caved in to my audioholic addiction and have a pair of L150s at Orange County Speaker for refoam and check up. In looking around on this site and others, I see that JBL recommended continuous 300 wpc for these speakers, but on this site read that some folks with excellent gear are happy with 160 wpc. I can run the L150s with either a McIntosh MC-2120 at 120 wpc or a McIntosh MC-2205 at 200 wpc. Still, I am wondering: is the McIntosh MC-7300 at 300 wpc better sonically than the MC2300 at 300 wpc? The MC-7300 has Power Guard whereas the MC-2300 appears to not have it which is a concern because I do not care to blow out the speakers. JBL claims in their ad brochure that the speakers perform at their best at 300 watts continuous sine wave per channel... (JBL ad, p4, circa 1979).

At any rate, any suggestions for a good 300 wpc stereo amplifier and cost? Thoughts on this? Thanks!
03-21-2010, 06:12 PM
midlife

Quote:

Originally Posted by LuvOldJBL

I caved in to my audioholic addiction and have a pair of L150s at Orange County Speaker for refoam and check up. In looking around on this site and others, I see that JBL recommended continuous 300 wpc for these speakers, but on this site read that some folks with excellent gear are happy with 160 wpc. I can run the L150s with either a McIntosh MC-2120 at 120 wpc or a McIntosh MC-2205 at 200 wpc. Still, I am wondering: is the McIntosh MC-7300 at 300 wpc better sonically than the MC2300 at 300 wpc? The MC-7300 has Power Guard whereas the MC-2300 appears to not have it which is a concern because I do not care to blow out the speakers. JBL claims in their ad brochure that the speakers perform at their best at 300 watts continuous sine wave per channel... (JBL ad, p4, circa 1979).

At any rate, any suggestions for a good 300 wpc stereo amplifier and cost? Thoughts on this? Thanks!

The 2205 should sound excellent and provide very sufficient power.
03-21-2010, 07:04 PM
BMWCCA

300 wpc is the recommended "maximum" power for these speakers, btw.

http://www.lansingheritage.org/image...l150/page4.jpg
03-21-2010, 07:35 PM
Robh3606

If you already have a 200 watt amp you like why bother with a 300 watt amp?? It's what an extra 1-2db of headroom. The first watt is what really counts anyway.

Rob:)
03-21-2010, 10:39 PM
Mr. Widget

Quote:

Originally Posted by Robh3606

If you already have a 200 watt amp you like why bother with a 300 watt amp?? It's what an extra 1-2db of headroom. The first watt is what really counts anyway.

:yes:

"I caved in to my audioholic addiction and have..."

Caving once in a month is plenty... wait for the next more meaningful upgrade... you don't need an amp. :)

Widget
03-22-2010, 06:04 AM
rdgrimes

Quote:

Originally Posted by LuvOldJBL

At any rate, any suggestions for a good 300 wpc stereo amplifier and cost? Thoughts on this? Thanks!

Seems like wherever you go, anytime someone asks about getting more power, 6 people jump in to tell you that you don't need more power. If you want more power, you should have it. ;)

There are quite a few offerings from Sunfire and Carver that fill the bill. Older Carver amps run from $300-400 on the bay in working condition, but often they benefit from some refurbishing to be restored to like new condition. Cost for that is around $350 plus shipping. There are also several Sunfire stereo models that are newer and might run 2x that cost or more. You can also look at pro amps, where cost per watt is lower, but expect to see noisy cooling fans.

I've run the L-150A, L112 and L96 models on amps ranging from 100W to 1000W per channel. I think the sweet spot is between 200W and 400W. A lot depends on your room and listening volume. But personally I wouldn't settle for less than 200WPC.
03-22-2010, 07:11 AM
jim3860

Quote:

Originally Posted by Robh3606

If you already have a 200 watt amp you like why bother with a 300 watt amp?? It's what an extra 1-2db of headroom. The first watt is what really counts anyway.

Rob:)

True that at the max power rating it wont gain you much in volume but depending on the amp it can sound much better even at lower volumes.

Quote:

Originally Posted by rdgrimes

Seems like wherever you go, anytime someone asks about getting more power, 6 people jump in to tell you that you don't need more power. If you want more power, you should have it. ;)

There are quite a few offerings from Sunfire and Carver that fill the bill. Older Carver amps run from $300-400 on the bay in working condition, but often they benefit from some refurbishing to be restored to like new condition. Cost for that is around $350 plus shipping. There are also several Sunfire stereo models that are newer and might run 2x that cost or more. You can also look at pro amps, where cost per watt is lower, but expect to see noisy cooling fans.

I've run the L-150A, L112 and L96 models on amps ranging from 100W to 1000W per channel. I think the sweet spot is between 200W and 400W. A lot depends on your room and listening volume. But personally I wouldn't settle for less than 200WPC.

Agreed on the Carver/Sunfire amps if your on a budget. I have owned and or still own several different Carver amps and a Sunfire 300 X 2 and even though the Carver 1.5t is rated at 350 wpc for example the Sunfire 300 X 2 dominates it in every way clarity, detail, soundstage, depth, bass etc of course the Sunfire will double down to 2400 wpc at 1 ohm and costs twice or even more than the comparable Carver but if you think you might someday get more power hungry speakers that will dip into a 1 or 2 ohm load the Sunfire is the way to go.

REGARDS JIM
03-22-2010, 08:37 AM
midlife

Quote:

Originally Posted by Mr. Widget

:yes:

"I caved in to my audioholic addiction and have..."

Caving once in a month is plenty... wait for the next more meaningful upgrade... you don't need an amp. :)

Widget

Hook those pups up to the 2205 and see whatcha got...if new surrounds you may need to give them just a bit of run in time
03-22-2010, 09:20 AM
rdgrimes

Quote:

Originally Posted by jim3860

True that at the max power rating it wont gain you much in volume but depending on the amp it can sound much better even at lower volumes.

Agreed on the Carver/Sunfire amps if your on a budget. I have owned and or still own several different Carver amps and a Sunfire 300 X 2 and even though the Carver 1.5t is rated at 350 wpc for example the Sunfire 300 X 2 dominates it in every way clarity, detail, soundstage, depth, bass etc of course the Sunfire will double down to 2400 wpc at 1 ohm and costs twice or even more than the comparable Carver but if you think you might someday get more power hungry speakers that will dip into a 1 or 2 ohm load the Sunfire is the way to go.
REGARDS JIM

The main reason you might be noticing the difference between the M-1.5t and the Sunfire is age. Once fully restored, the M-1.5t is a beast and crystal clear.

I recently scored 2x Carver M-4.0t on the local C-list for a pittance. They surpass the M-1.5t slightly in headroom to my ears, and are also crystal clear. They also offer the rare advantage of being able to bridge for 1000W mono. But any of these old Carvers should prolly be sent off for a refurbish, the old output caps in particular need updating.

The Sunfire amps offer the advantage of being newer and not yet needing any work. And then there's the Sunfire Signature 2-ch monster at 600WPC.
03-22-2010, 10:54 AM
LuvOldJBL

Thanks

Thanks to all for the favor of your replies and very good input. I was seeking to learn what is optimum, the sweet spot, for L150s. Also, it is good to hear from experts what are considered to be good amps and matches for such vintage. Ah, yes, I do curb my splurges - saying audioholic in good cheer. I appreciate everyones advice and will likely listen to the refurbished L150s with the McIntosh 2205 for awhile. Thanks! :applaud:
03-22-2010, 01:48 PM
jim3860

Quote:

Originally Posted by rdgrimes

The main reason you might be noticing the difference between the M-1.5t and the Sunfire is age. Once fully restored, the M-1.5t is a beast and crystal clear.

I recently scored 2x Carver M-4.0t on the local C-list for a pittance. They surpass the M-1.5t slightly in headroom to my ears, and are also crystal clear. They also offer the rare advantage of being able to bridge for 1000W mono. But any of these old Carvers should prolly be sent off for a refurbish, the old output caps in particular need updating.

The Sunfire amps offer the advantage of being newer and not yet needing any work. And then there's the Sunfire Signature 2-ch monster at 600WPC.

Possibly yes and certainly as they get older they need the Electrolytic caps changed for sure. It is impossible to say one amp is better than another without them both being the same age with any certainty, but the other Carver amps I own that are newer such as the TFM-35X dont sound as good to my ears either I think it is most likely due to a different design and price point in parts then anything else. Even though neither of the Carver amps mentioned sound bad they are just not in the same class as the Sunfire but of course my oppinion is subjective and others may prefer the sound of either of the Carvers mentioned :) Congrats on the M-4.0T scores, nice amps for sure.

REGARDS JIM
03-22-2010, 02:31 PM
robertbartsch

I've always preferred speakers that have a very high sensativity rating since they can put out a high SPL with only moderate power.

The spec sheet above indicates these units have a fairly low sensativity rating.

Anyway, the bigger the amp the more headroom you have. Generally, using a higher power amp will reduce the likelyhood that amp induced distortion and resultant driver damage will ocurr.
03-22-2010, 03:59 PM
midlife

Quote:

Originally Posted by LuvOldJBL

Thanks to all for the favor of your replies and very good input. I was seeking to learn what is optimum, the sweet spot, for L150s. Also, it is good to hear from experts what are considered to be good amps and matches for such vintage. Ah, yes, I do curb my splurges - saying audioholic in good cheer. I appreciate everyones advice and will likely listen to the refurbished L150s with the McIntosh 2205 for awhile. Thanks! :applaud:

I think that combo should work pretty well....lets us know how it works out.
03-23-2010, 09:44 AM
rdgrimes

Quote:

Originally Posted by jim3860

Possibly yes and certainly as they get older they need the Electrolytic caps changed for sure. It is impossible to say one amp is better than another without them both being the same age with any certainty, but the other Carver amps I own that are newer such as the TFM-35X dont sound as good to my ears either I think it is most likely due to a different design and price point in parts then anything else. Even though neither of the Carver amps mentioned sound bad they are just not in the same class as the Sunfire but of course my oppinion is subjective and others may prefer the sound of either of the Carvers mentioned :) Congrats on the M-4.0T scores, nice amps for sure.

REGARDS JIM

There's no question that the Sunfire models are several steps up on the food chain. The TFM Carver models are really just a re-worked M-x.xt chassis, in fact the M-4.0t is identical to the TFM-42/45 inside.

I wouldn't trade my Sunfire Signature 5-ch for anything. BTW, there are several 5-ch amps around that make fine stereo amps too, and even open the possibility of bi-amping. The Sunfire Cinema Grand and Theater Grand models are 2 examples and can be had around $800 used. Not that I would suggest bi-amping the L150A, but I do suggest feeding it lots and lots of power in a big room.
03-28-2010, 06:48 AM
tom1040

I tried out a few amps before a McIntosh MC402 entered. No need to upgrade from this awesome amp....yet.:D
03-28-2010, 08:48 AM
Audiobeer

Tom if you felt a need to upgrade from that I'd say you have a problem. Hey can you post your address and daily schedule? :D

Nice Amp, What Preamp are you using?
03-28-2010, 09:23 AM
tom1040

C46 McIntosh
03-28-2010, 11:32 AM
timc

I ownde a MC402 a few years back. Great ampflifier. Magcial mids and highs, but lacks ultimate controll over large woofers.
03-28-2010, 02:05 PM
tom1040

Define large. Seems to control the hell out of the 1400 array 14"s.:applaud:
03-29-2010, 01:28 AM
timc

Quote:

Originally Posted by tom1040

Define large. Seems to control the hell out of the 1400 array 14"s.:applaud:

12" and up. On an array 1400 i found it to be a bit mushy. Lots of bass, digging deep, but compared to a Crown XTi-1000 it was completely trumped. Remind you, this is only the bass, lets say a few hundred Hz and down. Upwards the 402 is among the very best i have tried.

Only 2 amplifier i THINK is better in the mid/high is the Halcro DM58's and the Marantz MA-9's. I have not tested theese in the same setup, but my money is on the Marantz for tonal excellense. The Halcro's have bit tighter bass. Both best the 402 down low.

BTW: I'm not trying to be a wiseguy. Just posting my experience with the different amplifiers.

-Tim
03-29-2010, 10:14 AM
toddalin

Don't let one get away!

http://audioheritage.org/vbulletin/s...ad.php?t=28212
03-31-2010, 12:00 PM
LuvOldJBL

L150's will be picked up on Friday!

Tuesday afternoon, Orange County Speaker called me with the news that the L150's are ready for pick up. The re-foam and some minor work is done. Speakers test ok and sound "good". I'll take off work early this Friday and am looking forward to hearing them! :)
04-04-2010, 06:42 PM
LuvOldJBL

The L150's will rock you!

Friday, I took off work early to pick up the L150’s from Orange County Speaker and began listening that evening. I like ‘em! Initially, a tweeter was sounding scratchy when the pair of speakers was first fired up with the McIntosh MC-2205, but a few minutes later the problem went away and remains okay. The MC-2205 delivers enough power for the speakers. Thanks again for the advice. The speakers have good clarity and when the bass kicks in – it really kicks in! During the first twenty seconds of 2001: A Space Odyssey, track 8, Also Sprach Zarathustra, I was in the other room and it seemed like the house shook. I tend to favor my 4412’s sonically and with imaging, but the L150’s are likely too big for my living area. Of course, these are minor matters. LOL! All music sounds great: classic rock (FM stereo broadcasts using a McIntosh MR-77 tuner, and listened to Pink Floyd Animals CD), classical (KUSC and an opera CD), jazz and classic popular tunes. I’ll have to look into buying some organ music CDs with deep bass for fun. ORCO Spkr did a great job with the woofers and passive-radiators foam surrounds. They tell me that all components test okay, “sounds good” and they like the cabinets. I’m looking forward to hearing the speakers after burn in, but gotta say that they already sound great. When the guy at ORCO Spkr loaded my minivan he said, “take ‘em home and blast them!” LMAO! Goodness! Indeed, the L150’s most certainly are capable of loud volumes for classic rock because they will rock you! Everyone’s input is appreciated. I love old JBLs!!!